suppress logging unless debug mode

Signed-off-by: Glease <4586901+Glease@users.noreply.github.com>

.editorconfig

@@ -0,0 +1,19 @@
+# This is the universal Text Editor Configuration
+# for all GTNewHorizons projects
+# See: https://editorconfig.org/
+
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_size = 4
+indent_style = space
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.{bat,ini}]
+end_of_line = crlf
+
+[*.{dtd,json,info,mcmeta,md,sh,svg,xml,xsd,xsl,yaml,yml}]
+indent_size = 2

.github/scripts/test_no_error_reports

@@ -0,0 +1,51 @@
+#!/usr/bin/env bash
+
+# bashsupport disable=BP5006 # Global environment variables
+RUNDIR="run" \
+  CRASH="crash-reports" \
+  SERVERLOG="server.log"
+
+# enable nullglob to get 0 results when no match rather than the pattern
+shopt -s nullglob
+
+# store matches in array
+crash_reports=("$RUNDIR/$CRASH/crash"*.txt)
+
+# if array not empty there are crash_reports
+if [ "${#crash_reports[@]}" -gt 0 ]; then
+  # get the latest crash_report from array
+  latest_crash_report="${crash_reports[-1]}"
+  {
+    printf 'Latest crash report detected %s:\n' "${latest_crash_report##*/}"
+    cat "$latest_crash_report"
+  } >&2
+  exit 1
+fi
+
+if grep --quiet --fixed-strings 'Fatal errors were detected' "$SERVERLOG"; then
+  {
+    printf 'Fatal errors detected:\n'
+    cat server.log
+  } >&2
+  exit 1
+fi
+
+if grep --quiet --fixed-strings 'The state engine was in incorrect state ERRORED and forced into state SERVER_STOPPED' \
+  "$SERVERLOG"; then
+  {
+    printf 'Server force stopped:'
+    cat server.log
+  } >&2
+  exit 1
+fi
+
+if ! grep --quiet --perl-regexp --only-matching '.+Done \(.+\)\! For help, type "help" or "\?"' "$SERVERLOG"; then
+  {
+    printf 'Server did not finish startup:'
+    cat server.log
+  } >&2
+  exit 1
+fi
+
+printf 'No crash reports detected'
+exit 0

.github/workflows/build-and-test.yml

@@ -0,0 +1,13 @@
+
+name: Build and test
+
+on:
+  pull_request:
+    branches: [ master, main ]
+  push:
+    branches: [ master, main ]
+
+jobs:
+  build-and-test:
+    uses: GTNewHorizons/GTNH-Actions-Workflows/.github/workflows/build-and-test.yml@master
+    secrets: inherit

.github/workflows/release-tags.yml

@@ -0,0 +1,14 @@
+
+name: Release tagged build
+
+on:
+  push:
+    tags: [ '*' ]
+
+permissions:
+  contents: write
+
+jobs:
+  release-tags:
+    uses: GTNewHorizons/GTNH-Actions-Workflows/.github/workflows/release-tags.yml@master
+    secrets: inherit

.gitignore

@@ -1,20 +1,29 @@
-*.class
-*.log
-*.ctxt
-.mtj.tmp/
-*.jar
-*.war
-*.nar
-*.ear
-*.zip
-*.tar.gz
-*.rar
-hs_err_pid*
 .gradle
-**/build/
-!src/**/build/
-gradle-app.setting
-!gradle-wrapper.jar
-.gradletasknamecache
-.idea/
-run/
+.settings
+/.idea/
+/run/
+/build/
+/eclipse/
+.classpath
+.project
+/bin/
+/config/
+/crash-reports/
+/logs/
+options.txt
+/saves/
+usernamecache.json
+banned-ips.json
+banned-players.json
+eula.txt
+ops.json
+server.properties
+servers.dat
+usercache.json
+whitelist.json
+/out/
+*.iml
+*.ipr
+*.iws
+src/main/resources/mixins.*.json
+*.bat

CODEOWNERS

@@ -0,0 +1,3 @@
+# Any Github changes require admin approval
+/.github/** @GTNewHorizons/admin
+

README.md

@@ -21,9 +21,14 @@ Originally created by TecTech authors, taken with permission. It's under MIT lic
     }
     ```
    Replace `master-SNAPSHOT` with a commit hash or a tag name (if any) of your choice to prevent unexpected upstream changes.
-2. Add `required-after:structurelib;` to your `@Mod(dependencies = "..")` tring. 
+2. Add `required-after:structurelib;` to your `@Mod(dependencies = "..")` tring.
 3. Add `structurelib` to your `mcmod.info`.
 
 ## Contribution
 
 The project is developed using IDEA. Please manually configure the build to not delegate to gradle for textures to show up in dev.
+
+## Current license
+Due to me adding in ItemStackMap, which was derived from code from CodeChicken's LGPL mod NEI. This mod is effectively considered
+licensed under LGPL in its entirety since commit ebef584b8c518f8202cfe0984fb28a6d23e52b3d or any squash commit containing it, e.g.
+609e50428ee4e293f65f67f554a70b9fcfae97c4.

build.gradle

@@ -1,65 +1,936 @@
+//version: 1659977784
+/*
+ DO NOT CHANGE THIS FILE!
+ Also, you may replace this file at any time if there is an update available.
+ Please check https://github.com/GTNewHorizons/ExampleMod1.7.10/blob/main/build.gradle for updates.
+ */
+
+
+import com.github.jengelman.gradle.plugins.shadow.tasks.ConfigureShadowRelocation
+import com.github.jengelman.gradle.plugins.shadow.tasks.ShadowJar
+import org.gradle.internal.logging.text.StyledTextOutput.Style
+import org.gradle.internal.logging.text.StyledTextOutputFactory
+
+import java.nio.file.Files
+import java.nio.file.Paths
+import java.util.concurrent.TimeUnit
+import java.util.zip.ZipEntry
+import java.util.zip.ZipInputStream
+import java.util.zip.ZipOutputStream
+
 buildscript {
     repositories {
         mavenCentral()
+
         maven {
-            name = "forge"
-            url = "https://files.minecraftforge.net/maven"
+            name 'forge'
+            url 'https://maven.minecraftforge.net'
         }
         maven {
-            name = "sonatype"
-            url = "https://oss.sonatype.org/content/repositories/snapshots/"
+            name 'sonatype'
+            url 'https://oss.sonatype.org/content/repositories/snapshots/'
+        }
+        maven {
+            name 'Scala CI dependencies'
+            url 'https://repo1.maven.org/maven2/'
+        }
+        maven {
+            name 'jitpack'
+            url 'https://jitpack.io'
         }
     }
     dependencies {
-        classpath 'net.minecraftforge.gradle:ForgeGradle:1.2.1'
+        classpath 'com.github.GTNewHorizons:ForgeGradle:1.2.7'
     }
 }
+plugins {
+    id 'java-library'
+    id 'idea'
+    id 'eclipse'
+    id 'scala'
+    id 'maven-publish'
+    id 'org.jetbrains.kotlin.jvm'        version '1.5.30'       apply false
+    id 'org.jetbrains.kotlin.kapt'       version '1.5.30'       apply false
+    id 'com.google.devtools.ksp'         version '1.5.30-1.0.0' apply false
+    id 'org.ajoberstar.grgit'            version '4.1.1'
+    id 'com.github.johnrengelman.shadow' version '4.0.4'
+    id 'com.palantir.git-version'        version '0.13.0'       apply false
+    id 'de.undercouch.download'          version '5.0.1'
+    id 'com.github.gmazzo.buildconfig'   version '3.0.3'        apply false
+    id "com.diffplug.spotless"           version "6.7.2"
+}
+verifySettingsGradle()
+
+dependencies {
+    implementation 'com.diffplug:blowdryer:1.6.0'
+}
+
+apply plugin: 'com.diffplug.blowdryer'
+
+if (project.file('.git/HEAD').isFile()) {
+    apply plugin: 'com.palantir.git-version'
+}
+
+def out = services.get(StyledTextOutputFactory).create('an-output')
 
 apply plugin: 'forge'
 
-version = modVersion
-group= modGroup
-archivesBaseName = modBaseName
+def projectJavaVersion = JavaLanguageVersion.of(8)
 
-sourceCompatibility = 1.8
-targetCompatibility = 1.8
-
-minecraft {
-    version = project.forgeVersion
-    replaceIn "StructureLib.java"
-    replace '${version}', project.version
-    runDir = "run"
-}
-
-processResources
-{
-    inputs.property "version", project.version
-    inputs.property "mcversion", project.minecraft.version
-    
-    from(sourceSets.main.resources.srcDirs) {
-        include 'mcmod.info'
-        expand 'version': project.version, 'mcversion': project.minecraft.version
+java {
+    toolchain {
+        languageVersion.set(projectJavaVersion)
     }
-    
-    from(sourceSets.main.resources.srcDirs) {
-        exclude 'mcmod.info'
-    }
-}
-
-task deobfJar(type: Jar) {
-    from sourceSets.main.output
-    classifier = 'deobf'
-}
-
-artifacts {
-    archives deobfJar
-    archives jar
 }
 
 idea {
     module {
-        inheritOutputDirs = false
-        outputDir = new File(compileJava.destinationDir.parentFile.parentFile, "idea")
-        testOutputDir = new File(compileTestJava.destinationDir.parentFile.parentFile, "ideaTest")
+        inheritOutputDirs = true
+        downloadJavadoc = true
+        downloadSources = true
     }
 }
+apply from: Blowdryer.file('spotless.gradle')
+
+if(JavaVersion.current() != JavaVersion.VERSION_1_8) {
+    throw new GradleException("This project requires Java 8, but it's running on " + JavaVersion.current())
+}
+
+checkPropertyExists("modName")
+checkPropertyExists("modId")
+checkPropertyExists("modGroup")
+checkPropertyExists("autoUpdateBuildScript")
+checkPropertyExists("minecraftVersion")
+checkPropertyExists("forgeVersion")
+checkPropertyExists("replaceGradleTokenInFile")
+checkPropertyExists("gradleTokenModId")
+checkPropertyExists("gradleTokenModName")
+checkPropertyExists("gradleTokenVersion")
+checkPropertyExists("gradleTokenGroupName")
+checkPropertyExists("apiPackage")
+checkPropertyExists("accessTransformersFile")
+checkPropertyExists("usesMixins")
+checkPropertyExists("mixinPlugin")
+checkPropertyExists("mixinsPackage")
+checkPropertyExists("coreModClass")
+checkPropertyExists("containsMixinsAndOrCoreModOnly")
+checkPropertyExists("usesShadowedDependencies")
+checkPropertyExists("developmentEnvironmentUserName")
+
+boolean noPublishedSources = project.hasProperty("noPublishedSources") ? project.noPublishedSources.toBoolean() : false
+boolean usesMixinDebug = project.hasProperty('usesMixinDebug') ?: project.usesMixins.toBoolean()
+boolean forceEnableMixins = project.hasProperty('forceEnableMixins') ? project.forceEnableMixins.toBoolean() : false
+String channel = project.hasProperty('channel') ? project.channel : 'stable'
+String mappingsVersion = project.hasProperty('mappingsVersion') ? project.mappingsVersion : '12'
+String javaSourceDir = "src/main/java/"
+String scalaSourceDir = "src/main/scala/"
+String kotlinSourceDir = "src/main/kotlin/"
+
+String targetPackageJava = javaSourceDir + modGroup.toString().replaceAll("\\.", "/")
+String targetPackageScala = scalaSourceDir + modGroup.toString().replaceAll("\\.", "/")
+String targetPackageKotlin = kotlinSourceDir + modGroup.toString().replaceAll("\\.", "/")
+if(!(getFile(targetPackageJava).exists() || getFile(targetPackageScala).exists() || getFile(targetPackageKotlin).exists())) {
+    throw new GradleException("Could not resolve \"modGroup\"! Could not find " + targetPackageJava + " or " + targetPackageScala + " or " + targetPackageKotlin)
+}
+
+if(apiPackage) {
+    targetPackageJava = javaSourceDir + modGroup.toString().replaceAll("\\.", "/") + "/" + apiPackage.toString().replaceAll("\\.", "/")
+    targetPackageScala = scalaSourceDir + modGroup.toString().replaceAll("\\.", "/") + "/" + apiPackage.toString().replaceAll("\\.", "/")
+    targetPackageKotlin = kotlinSourceDir + modGroup.toString().replaceAll("\\.", "/") + "/" + apiPackage.toString().replaceAll("\\.", "/")
+    if(!(getFile(targetPackageJava).exists() || getFile(targetPackageScala).exists() || getFile(targetPackageKotlin).exists())) {
+        throw new GradleException("Could not resolve \"apiPackage\"! Could not find " + targetPackageJava + " or " + targetPackageScala + " or " + targetPackageKotlin)
+    }
+}
+
+if(accessTransformersFile) {
+    String targetFile = "src/main/resources/META-INF/" + accessTransformersFile
+    if(!getFile(targetFile).exists()) {
+        throw new GradleException("Could not resolve \"accessTransformersFile\"! Could not find " + targetFile)
+    }
+}
+
+if(usesMixins.toBoolean()) {
+    if(mixinsPackage.isEmpty() || mixinPlugin.isEmpty()) {
+        throw new GradleException("\"mixinPlugin\" requires \"mixinsPackage\" and \"mixinPlugin\" to be set!")
+    }
+
+    targetPackageJava = javaSourceDir + modGroup.toString().replaceAll("\\.", "/") + "/" + mixinsPackage.toString().replaceAll("\\.", "/")
+    targetPackageScala = scalaSourceDir + modGroup.toString().replaceAll("\\.", "/") + "/" + mixinsPackage.toString().replaceAll("\\.", "/")
+    targetPackageKotlin = kotlinSourceDir + modGroup.toString().replaceAll("\\.", "/") + "/" + mixinsPackage.toString().replaceAll("\\.", "/")
+    if(!(getFile(targetPackageJava).exists() || getFile(targetPackageScala).exists() || getFile(targetPackageKotlin).exists())) {
+        throw new GradleException("Could not resolve \"mixinsPackage\"! Could not find " + targetPackageJava + " or " + targetPackageScala  + " or " + targetPackageKotlin)
+    }
+
+    String targetFileJava = javaSourceDir + modGroup.toString().replaceAll("\\.", "/") + "/" + mixinPlugin.toString().replaceAll("\\.", "/") + ".java"
+    String targetFileScala = scalaSourceDir + modGroup.toString().replaceAll("\\.", "/") + "/" + mixinPlugin.toString().replaceAll("\\.", "/") + ".scala"
+    String targetFileScalaJava = scalaSourceDir + modGroup.toString().replaceAll("\\.", "/") + "/" + mixinPlugin.toString().replaceAll("\\.", "/") + ".java"
+    String targetFileKotlin = kotlinSourceDir + modGroup.toString().replaceAll("\\.", "/") + "/" + mixinPlugin.toString().replaceAll("\\.", "/") + ".kt"
+    if(!(getFile(targetFileJava).exists() || getFile(targetFileScala).exists() || getFile(targetFileScalaJava).exists() || getFile(targetFileKotlin).exists())) {
+        throw new GradleException("Could not resolve \"mixinPlugin\"! Could not find " + targetFileJava + " or " + targetFileScala + " or " + targetFileScalaJava + " or " + targetFileKotlin)
+    }
+}
+
+if(coreModClass) {
+    String targetFileJava = javaSourceDir + modGroup.toString().replaceAll("\\.", "/") + "/" + coreModClass.toString().replaceAll("\\.", "/") + ".java"
+    String targetFileScala = scalaSourceDir + modGroup.toString().replaceAll("\\.", "/") + "/" + coreModClass.toString().replaceAll("\\.", "/") + ".scala"
+    String targetFileScalaJava = scalaSourceDir + modGroup.toString().replaceAll("\\.", "/") + "/" + coreModClass.toString().replaceAll("\\.", "/") + ".java"
+    String targetFileKotlin = kotlinSourceDir + modGroup.toString().replaceAll("\\.", "/") + "/" + coreModClass.toString().replaceAll("\\.", "/") + ".kt"
+    if(!(getFile(targetFileJava).exists() || getFile(targetFileScala).exists() || getFile(targetFileScalaJava).exists() || getFile(targetFileKotlin).exists())) {
+        throw new GradleException("Could not resolve \"coreModClass\"! Could not find " + targetFileJava + " or " + targetFileScala + " or " + targetFileScalaJava + " or " + targetFileKotlin)
+    }
+}
+
+configurations.all {
+    resolutionStrategy.cacheChangingModulesFor(0, TimeUnit.SECONDS)
+
+    // Make sure GregTech build won't time out
+    System.setProperty("org.gradle.internal.http.connectionTimeout", 120000 as String)
+    System.setProperty("org.gradle.internal.http.socketTimeout", 120000 as String)
+}
+
+// Fix Jenkins' Git: chmod a file should not be detected as a change and append a '.dirty' to the version
+try {
+    'git config core.fileMode false'.execute()
+}
+catch (Exception ignored) {
+    out.style(Style.Failure).println("git isn't installed at all")
+}
+
+// Pulls version first from the VERSION env and then git tag
+String identifiedVersion
+String versionOverride = System.getenv("VERSION") ?: null
+try {
+    identifiedVersion = versionOverride == null ? gitVersion() : versionOverride
+}
+catch (Exception ignored) {
+    out.style(Style.Failure).text(
+            'This mod must be version controlled by Git AND the repository must provide at least one tag,\n' +
+            'or the VERSION override must be set! ').style(Style.SuccessHeader).text('(Do NOT download from GitHub using the ZIP option, instead\n' +
+            'clone the repository, see ').style(Style.Info).text('https://gtnh.miraheze.org/wiki/Development').style(Style.SuccessHeader).println(' for details.)'
+            )
+    versionOverride = 'NO-GIT-TAG-SET'
+    identifiedVersion = versionOverride
+}
+version = minecraftVersion + '-' + identifiedVersion
+ext {
+    modVersion = identifiedVersion
+}
+
+if(identifiedVersion == versionOverride) {
+    out.style(Style.Failure).text('Override version to ').style(Style.Identifier).text(modVersion).style(Style.Failure).println('!\7')
+}
+
+group = modGroup
+if(project.hasProperty("customArchiveBaseName") && customArchiveBaseName) {
+    archivesBaseName = customArchiveBaseName
+}
+else {
+    archivesBaseName = modId
+}
+
+def arguments = []
+def jvmArguments = []
+
+if (usesMixins.toBoolean() || forceEnableMixins) {
+    arguments += [
+        "--tweakClass org.spongepowered.asm.launch.MixinTweaker"
+    ]
+    if (usesMixinDebug.toBoolean()) {
+        jvmArguments += [
+            "-Dmixin.debug.countInjections=true",
+            "-Dmixin.debug.verbose=true",
+            "-Dmixin.debug.export=true"
+        ]
+    }
+}
+
+minecraft {
+    version = minecraftVersion + '-' + forgeVersion + '-' + minecraftVersion
+    runDir = 'run'
+
+    if (replaceGradleTokenInFile) {
+        replaceIn replaceGradleTokenInFile
+        if(gradleTokenModId) {
+            replace gradleTokenModId, modId
+        }
+        if(gradleTokenModName) {
+            replace gradleTokenModName, modName
+        }
+        if(gradleTokenVersion) {
+            replace gradleTokenVersion, modVersion
+        }
+        if(gradleTokenGroupName) {
+            replace gradleTokenGroupName, modGroup
+        }
+    }
+
+    clientIntellijRun {
+        args(arguments)
+        jvmArgs(jvmArguments)
+
+        if(developmentEnvironmentUserName) {
+            args("--username", developmentEnvironmentUserName)
+        }
+    }
+
+    serverIntellijRun {
+        args(arguments)
+        jvmArgs(jvmArguments)
+    }
+}
+
+if(file('addon.gradle').exists()) {
+    apply from: 'addon.gradle'
+}
+
+apply from: 'repositories.gradle'
+
+configurations {
+    implementation.extendsFrom(shadowImplementation)  // TODO: remove after all uses are refactored
+    implementation.extendsFrom(shadowCompile)
+    implementation.extendsFrom(shadeCompile)
+}
+
+repositories {
+    maven {
+        name 'Overmind forge repo mirror'
+        url 'https://gregtech.overminddl1.com/'
+    }
+    if(usesMixins.toBoolean() || forceEnableMixins) {
+        maven {
+            name 'sponge'
+            url 'https://repo.spongepowered.org/repository/maven-public'
+        }
+        maven {
+            url 'https://jitpack.io'
+        }
+    }
+}
+
+dependencies {
+    if(usesMixins.toBoolean()) {
+        annotationProcessor('org.ow2.asm:asm-debug-all:5.0.3')
+        annotationProcessor('com.google.guava:guava:24.1.1-jre')
+        annotationProcessor('com.google.code.gson:gson:2.8.6')
+        annotationProcessor('org.spongepowered:mixin:0.8-SNAPSHOT')
+    }
+    if(usesMixins.toBoolean() || forceEnableMixins) {
+        // using 0.8 to workaround a issue in 0.7 which fails mixin application
+        compile('com.github.GTNewHorizons:SpongePoweredMixin:0.7.12-GTNH') {
+            // Mixin includes a lot of dependencies that are too up-to-date
+            exclude module: 'launchwrapper'
+            exclude module: 'guava'
+            exclude module: 'gson'
+            exclude module: 'commons-io'
+            exclude module: 'log4j-core'
+        }
+        compile('com.github.GTNewHorizons:SpongeMixins:1.5.0')
+    }
+}
+
+apply from: 'dependencies.gradle'
+
+def mixingConfigRefMap = 'mixins.' + modId + '.refmap.json'
+def refMap = "${tasks.compileJava.temporaryDir}" + File.separator + mixingConfigRefMap
+def mixinSrg = "${tasks.reobf.temporaryDir}" + File.separator + "mixins.srg"
+
+task generateAssets {
+    if (usesMixins.toBoolean()) {
+        def mixinConfigFile = getFile("/src/main/resources/mixins." + modId + ".json");
+        if (!mixinConfigFile.exists()) {
+            mixinConfigFile.text = """{
+  "required": true,
+  "minVersion": "0.7.11",
+  "package": "${modGroup}.${mixinsPackage}",
+  "plugin": "${modGroup}.${mixinPlugin}",
+  "refmap": "${mixingConfigRefMap}",
+  "target": "@env(DEFAULT)",
+  "compatibilityLevel": "JAVA_8",
+  "mixins": [],
+  "client": [],
+  "server": []
+}
+"""
+        }
+    }
+}
+
+task relocateShadowJar(type: ConfigureShadowRelocation) {
+    target = tasks.shadowJar
+    prefix = modGroup + ".shadow"
+}
+
+shadowJar {
+    project.configurations.shadeCompile.each { dep ->
+        from(project.zipTree(dep)) {
+            exclude 'META-INF', 'META-INF/**'
+        }
+    }
+
+    manifest {
+        attributes(getManifestAttributes())
+    }
+
+    minimize()  // This will only allow shading for actually used classes
+    configurations = [
+        project.configurations.shadowImplementation,
+        project.configurations.shadowCompile
+    ]
+    dependsOn(relocateShadowJar)
+}
+
+jar {
+    project.configurations.shadeCompile.each { dep ->
+        from(project.zipTree(dep)) {
+            exclude 'META-INF', 'META-INF/**'
+        }
+    }
+
+    manifest {
+        attributes(getManifestAttributes())
+    }
+
+    if(usesShadowedDependencies.toBoolean()) {
+        dependsOn(shadowJar)
+        enabled = false
+    }
+}
+
+reobf {
+    if(usesMixins.toBoolean()) {
+        addExtraSrgFile mixinSrg
+    }
+}
+
+afterEvaluate {
+    if(usesMixins.toBoolean()) {
+        tasks.compileJava {
+            options.compilerArgs += [
+                "-AreobfSrgFile=${tasks.reobf.srg}",
+                "-AoutSrgFile=${mixinSrg}",
+                "-AoutRefMapFile=${refMap}",
+                // Elan: from what I understand they are just some linter configs so you get some warning on how to properly code
+                "-XDenableSunApiLintControl",
+                "-XDignore.symbol.file"
+            ]
+        }
+    }
+}
+
+runClient {
+    if(developmentEnvironmentUserName) {
+        arguments += [
+            "--username",
+            developmentEnvironmentUserName
+        ]
+    }
+
+    args(arguments)
+    jvmArgs(jvmArguments)
+}
+
+runServer {
+    args(arguments)
+    jvmArgs(jvmArguments)
+}
+
+tasks.withType(JavaExec).configureEach {
+    javaLauncher.set(
+            javaToolchains.launcherFor {
+                languageVersion = projectJavaVersion
+            }
+            )
+}
+
+processResources {
+    // this will ensure that this task is redone when the versions change.
+    inputs.property "version", project.version
+    inputs.property "mcversion", project.minecraft.version
+    exclude("spotless.gradle")
+
+    // replace stuff in mcmod.info, nothing else
+    from(sourceSets.main.resources.srcDirs) {
+        include 'mcmod.info'
+
+        // replace modVersion and minecraftVersion
+        expand "minecraftVersion": project.minecraft.version,
+        "modVersion": modVersion,
+        "modId": modId,
+        "modName": modName
+    }
+
+    if(usesMixins.toBoolean()) {
+        from refMap
+    }
+
+    // copy everything else that's not the mcmod.info
+    from(sourceSets.main.resources.srcDirs) {
+        exclude 'mcmod.info'
+        exclude 'spotless.gradle'
+    }
+}
+
+def getManifestAttributes() {
+    def manifestAttributes = [:]
+    if(!containsMixinsAndOrCoreModOnly.toBoolean() && (usesMixins.toBoolean() || coreModClass)) {
+        manifestAttributes += ["FMLCorePluginContainsFMLMod": true]
+    }
+
+    if(accessTransformersFile) {
+        manifestAttributes += ["FMLAT" : accessTransformersFile.toString()]
+    }
+
+    if(coreModClass) {
+        manifestAttributes += ["FMLCorePlugin": modGroup + "." + coreModClass]
+    }
+
+    if(usesMixins.toBoolean()) {
+        manifestAttributes += [
+            "TweakClass" : "org.spongepowered.asm.launch.MixinTweaker",
+            "MixinConfigs" : "mixins." + modId + ".json",
+            "ForceLoadAsMod" : !containsMixinsAndOrCoreModOnly.toBoolean()
+        ]
+    }
+    return manifestAttributes
+}
+
+task sourcesJar(type: Jar) {
+    from (sourceSets.main.allSource)
+    from (file("$projectDir/LICENSE"))
+    getArchiveClassifier().set('sources')
+}
+
+task shadowDevJar(type: ShadowJar) {
+    project.configurations.shadeCompile.each { dep ->
+        from(project.zipTree(dep)) {
+            exclude 'META-INF', 'META-INF/**'
+        }
+    }
+
+    from sourceSets.main.output
+    getArchiveClassifier().set("dev")
+
+    manifest {
+        attributes(getManifestAttributes())
+    }
+
+    minimize()  // This will only allow shading for actually used classes
+    configurations = [
+        project.configurations.shadowImplementation,
+        project.configurations.shadowCompile
+    ]
+}
+
+task relocateShadowDevJar(type: ConfigureShadowRelocation) {
+    target = tasks.shadowDevJar
+    prefix = modGroup + ".shadow"
+}
+
+task circularResolverJar(type: Jar) {
+    dependsOn(relocateShadowDevJar)
+    dependsOn(shadowDevJar)
+    enabled = false
+}
+
+task devJar(type: Jar) {
+    project.configurations.shadeCompile.each { dep ->
+        from(project.zipTree(dep)) {
+            exclude 'META-INF', 'META-INF/**'
+        }
+    }
+
+    from sourceSets.main.output
+    getArchiveClassifier().set("dev")
+
+    manifest {
+        attributes(getManifestAttributes())
+    }
+
+    if(usesShadowedDependencies.toBoolean()) {
+        dependsOn(circularResolverJar)
+        enabled = false
+    }
+}
+
+task apiJar(type: Jar) {
+    from (sourceSets.main.allSource) {
+        include modGroup.toString().replaceAll("\\.", "/") + "/" + apiPackage.toString().replaceAll("\\.", "/") + '/**'
+    }
+
+    from (sourceSets.main.output) {
+        include modGroup.toString().replaceAll("\\.", "/") + "/" + apiPackage.toString().replaceAll("\\.", "/") + '/**'
+    }
+
+    from (sourceSets.main.resources.srcDirs) {
+        include("LICENSE")
+    }
+
+    getArchiveClassifier().set('api')
+}
+
+artifacts {
+    if(!noPublishedSources) {
+        archives sourcesJar
+    }
+    archives devJar
+    if(apiPackage) {
+        archives apiJar
+    }
+}
+
+// The gradle metadata includes all of the additional deps that we disabled from POM generation (including forgeBin with no groupID),
+// and isn't strictly needed with the POM so just disable it.
+tasks.withType(GenerateModuleMetadata) {
+    enabled = false
+}
+
+// workaround variable hiding in pom processing
+def projectConfigs = project.configurations
+
+publishing {
+    publications {
+        maven(MavenPublication) {
+            from components.java
+            if(usesShadowedDependencies.toBoolean()) {
+                artifact source: shadowJar, classifier: ""
+            }
+            if(!noPublishedSources) {
+                artifact source: sourcesJar, classifier: "sources"
+            }
+            artifact source: usesShadowedDependencies.toBoolean() ? shadowDevJar : devJar, classifier: "dev"
+            if (apiPackage) {
+                artifact source: apiJar, classifier: "api"
+            }
+
+            groupId = System.getenv("ARTIFACT_GROUP_ID") ?: "com.github.GTNewHorizons"
+            artifactId = System.getenv("ARTIFACT_ID") ?: project.name
+            // Using the identified version, not project.version as it has the prepended 1.7.10
+            version = System.getenv("RELEASE_VERSION") ?: identifiedVersion
+
+            // remove extra garbage from minecraft and minecraftDeps configuration
+            pom.withXml {
+                def badArtifacts = [:].withDefault {[] as Set<String>}
+                for (configuration in [
+                            projectConfigs.minecraft,
+                            projectConfigs.minecraftDeps
+                        ]) {
+                    for (dependency in configuration.allDependencies) {
+                        badArtifacts[dependency.group == null ? "" : dependency.group] += dependency.name
+                    }
+                }
+                // example for specifying extra stuff to ignore
+                // badArtifacts["org.example.group"] += "artifactName"
+
+                Node pomNode = asNode()
+                pomNode.dependencies.'*'.findAll() {
+                    badArtifacts[it.groupId.text()].contains(it.artifactId.text())
+                }.each() {
+                    it.parent().remove(it)
+                }
+            }
+        }
+    }
+
+    repositories {
+        maven {
+            url = "http://jenkins.usrv.eu:8081/nexus/content/repositories/releases"
+            credentials {
+                username = System.getenv("MAVEN_USER") ?: "NONE"
+                password = System.getenv("MAVEN_PASSWORD") ?: "NONE"
+            }
+        }
+    }
+}
+
+// Updating
+task updateBuildScript {
+    doLast {
+        if (performBuildScriptUpdate(projectDir.toString())) return
+
+            print("Build script already up-to-date!")
+    }
+}
+
+if (!project.getGradle().startParameter.isOffline() && isNewBuildScriptVersionAvailable(projectDir.toString())) {
+    if (autoUpdateBuildScript.toBoolean()) {
+        performBuildScriptUpdate(projectDir.toString())
+    } else {
+        out.style(Style.SuccessHeader).println("Build script update available! Run 'gradle updateBuildScript'")
+    }
+}
+
+static URL availableBuildScriptUrl() {
+    new URL("https://raw.githubusercontent.com/GTNewHorizons/ExampleMod1.7.10/main/build.gradle")
+}
+static URL exampleSettingsGradleUrl() {
+    new URL("https://raw.githubusercontent.com/GTNewHorizons/ExampleMod1.7.10/main/settings.gradle.example")
+}
+
+
+def verifySettingsGradle() {
+    def settingsFile = getFile("settings.gradle")
+    if (!settingsFile.exists()) {
+        println("Downloading default settings.gradle")
+        exampleSettingsGradleUrl().withInputStream { i -> settingsFile.withOutputStream { it << i } }
+        throw new GradleException("Settings.gradle has been updated, please re-run task.")
+    }
+}
+
+boolean performBuildScriptUpdate(String projectDir) {
+    if (isNewBuildScriptVersionAvailable(projectDir)) {
+        def buildscriptFile = getFile("build.gradle")
+        availableBuildScriptUrl().withInputStream { i -> buildscriptFile.withOutputStream { it << i } }
+        out.style(Style.Success).print("Build script updated. Please REIMPORT the project or RESTART your IDE!")
+        verifySettingsGradle()
+        return true
+    }
+    return false
+}
+
+boolean isNewBuildScriptVersionAvailable(String projectDir) {
+    Map parameters = ["connectTimeout": 2000, "readTimeout": 2000]
+
+    String currentBuildScript = getFile("build.gradle").getText()
+    String currentBuildScriptHash = getVersionHash(currentBuildScript)
+    String availableBuildScript = availableBuildScriptUrl().newInputStream(parameters).getText()
+    String availableBuildScriptHash = getVersionHash(availableBuildScript)
+
+    boolean isUpToDate = currentBuildScriptHash.empty || availableBuildScriptHash.empty || currentBuildScriptHash == availableBuildScriptHash
+    return !isUpToDate
+}
+
+static String getVersionHash(String buildScriptContent) {
+    String versionLine = buildScriptContent.find("^//version: [a-z0-9]*")
+    if(versionLine != null) {
+        return versionLine.split(": ").last()
+    }
+    return ""
+}
+
+configure(updateBuildScript) {
+    group = 'forgegradle'
+    description = 'Updates the build script to the latest version'
+}
+
+// Parameter Deobfuscation
+
+task deobfParams {
+    doLast {
+
+        String mcpDir = "$project.gradle.gradleUserHomeDir/caches/minecraft/de/oceanlabs/mcp/mcp_$channel/$mappingsVersion"
+        String mcpZIP = "$mcpDir/mcp_$channel-$mappingsVersion-${minecraftVersion}.zip"
+        String paramsCSV = "$mcpDir/params.csv"
+
+        download.run {
+            src "https://maven.minecraftforge.net/de/oceanlabs/mcp/mcp_$channel/$mappingsVersion-$minecraftVersion/mcp_$channel-$mappingsVersion-${minecraftVersion}.zip"
+            dest mcpZIP
+            overwrite false
+        }
+
+        if(!file(paramsCSV).exists()) {
+            println("Extracting MCP archive ...")
+            unzip(mcpZIP, mcpDir)
+        }
+
+        println("Parsing params.csv ...")
+        Map<String, String> params = new HashMap<>()
+        Files.lines(Paths.get(paramsCSV)).forEach{line ->
+            String[] cells = line.split(",")
+            if(cells.length > 2 && cells[0].matches("p_i?\\d+_\\d+_")) {
+                params.put(cells[0], cells[1])
+            }
+        }
+
+        out.style(Style.Success).println("Modified ${replaceParams(file("$projectDir/src/main/java"), params)} files!")
+    out.style(Style.Failure).println("Don't forget to verify that the code still works as before!\n It could be broken due to duplicate variables existing now\n or parameters taking priority over other variables.")
+}
+}
+
+static int replaceParams(File file, Map<String, String> params) {
+int fileCount = 0
+
+if(file.isDirectory()) {
+    for(File f : file.listFiles()) {
+        fileCount += replaceParams(f, params)
+    }
+    return fileCount
+}
+println("Visiting ${file.getName()} ...")
+try {
+    String content = new String(Files.readAllBytes(file.toPath()))
+    int hash = content.hashCode()
+    params.forEach{key, value ->
+        content = content.replaceAll(key, value)
+    }
+    if(hash != content.hashCode()) {
+        Files.write(file.toPath(), content.getBytes("UTF-8"))
+        return 1
+    }
+} catch(Exception e) {
+    e.printStackTrace()
+}
+return 0
+}
+
+// Credit: bitsnaps (https://gist.github.com/bitsnaps/00947f2dce66f4bbdabc67d7e7b33681)
+static unzip(String zipFileName, String outputDir) {
+byte[] buffer = new byte[16384]
+ZipInputStream zis = new ZipInputStream(new FileInputStream(zipFileName))
+ZipEntry zipEntry = zis.getNextEntry()
+while (zipEntry != null) {
+    File newFile = new File(outputDir + File.separator, zipEntry.name)
+    if (zipEntry.isDirectory()) {
+        if (!newFile.isDirectory() && !newFile.mkdirs()) {
+            throw new IOException("Failed to create directory $newFile")
+        }
+    } else {
+        // fix for Windows-created archives
+        File parent = newFile.parentFile
+        if (!parent.isDirectory() && !parent.mkdirs()) {
+            throw new IOException("Failed to create directory $parent")
+        }
+        // write file content
+        FileOutputStream fos = new FileOutputStream(newFile)
+        int len = 0
+        while ((len = zis.read(buffer)) > 0) {
+            fos.write(buffer, 0, len)
+        }
+        fos.close()
+    }
+    zipEntry = zis.getNextEntry()
+}
+zis.closeEntry()
+zis.close()
+}
+
+configure(deobfParams) {
+group = 'forgegradle'
+description = 'Rename all obfuscated parameter names inherited from Minecraft classes'
+}
+
+// Dependency Deobfuscation
+
+def deobf(String sourceURL) {
+try {
+    URL url = new URL(sourceURL)
+    String fileName = url.getFile()
+
+    //get rid of directories:
+    int lastSlash = fileName.lastIndexOf("/")
+    if(lastSlash > 0) {
+        fileName = fileName.substring(lastSlash + 1)
+    }
+    //get rid of extension:
+    if(fileName.endsWith(".jar") || fileName.endsWith(".litemod")) {
+        fileName = fileName.substring(0, fileName.lastIndexOf("."))
+    }
+
+    String hostName = url.getHost()
+    if(hostName.startsWith("www.")) {
+        hostName = hostName.substring(4)
+    }
+    List parts = Arrays.asList(hostName.split("\\."))
+    Collections.reverse(parts)
+    hostName = String.join(".", parts)
+
+    return deobf(sourceURL, "$hostName/$fileName")
+} catch(Exception e) {
+    return deobf(sourceURL, "deobf/${sourceURL.hashCode()}")
+}
+}
+
+// The method above is to be preferred. Use this method if the filename is not at the end of the URL.
+def deobf(String sourceURL, String rawFileName) {
+String bon2Version = "2.5.1"
+String fileName = URLDecoder.decode(rawFileName, "UTF-8")
+String cacheDir = "$project.gradle.gradleUserHomeDir/caches"
+String bon2Dir = "$cacheDir/forge_gradle/deobf"
+String bon2File = "$bon2Dir/BON2-${bon2Version}.jar"
+String obfFile = "$cacheDir/modules-2/files-2.1/${fileName}.jar"
+String deobfFile = "$cacheDir/modules-2/files-2.1/${fileName}-deobf.jar"
+
+if(file(deobfFile).exists()) {
+    return files(deobfFile)
+}
+
+String mappingsVer
+String remoteMappings = project.hasProperty('remoteMappings') ? project.remoteMappings : 'https://raw.githubusercontent.com/MinecraftForge/FML/1.7.10/conf/'
+if(remoteMappings) {
+    String id = "${forgeVersion.split("\\.")[3]}-$minecraftVersion"
+    String mappingsZIP = "$cacheDir/forge_gradle/maven_downloader/de/oceanlabs/mcp/mcp_snapshot_nodoc/$id/mcp_snapshot_nodoc-${id}.zip"
+
+    zipMappings(mappingsZIP, remoteMappings, bon2Dir)
+
+    mappingsVer = "snapshot_$id"
+} else {
+    mappingsVer = "${channel}_$mappingsVersion"
+}
+
+download.run {
+    src "http://jenkins.usrv.eu:8081/nexus/content/repositories/releases/com/github/parker8283/BON2/$bon2Version-CUSTOM/BON2-$bon2Version-CUSTOM-all.jar"
+    dest bon2File
+    quiet true
+    overwrite false
+}
+
+download.run {
+    src sourceURL
+    dest obfFile
+    quiet true
+    overwrite false
+}
+
+exec {
+    commandLine 'java', '-jar', bon2File, '--inputJar', obfFile, '--outputJar', deobfFile, '--mcVer', minecraftVersion, '--mappingsVer', mappingsVer, '--notch'
+    workingDir bon2Dir
+    standardOutput = new FileOutputStream("${deobfFile}.log")
+}
+
+return files(deobfFile)
+}
+
+def zipMappings(String zipPath, String url, String bon2Dir) {
+File zipFile = new File(zipPath)
+if(zipFile.exists()) {
+    return
+}
+
+String fieldsCache = "$bon2Dir/data/fields.csv"
+String methodsCache = "$bon2Dir/data/methods.csv"
+
+download.run {
+    src "${url}fields.csv"
+    dest fieldsCache
+    quiet true
+}
+download.run {
+    src "${url}methods.csv"
+    dest methodsCache
+    quiet true
+}
+
+zipFile.getParentFile().mkdirs()
+ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(zipFile))
+
+zos.putNextEntry(new ZipEntry("fields.csv"))
+Files.copy(Paths.get(fieldsCache), zos)
+zos.closeEntry()
+
+zos.putNextEntry(new ZipEntry("methods.csv"))
+Files.copy(Paths.get(methodsCache), zos)
+zos.closeEntry()
+
+zos.close()
+}
+
+// Helper methods
+
+def checkPropertyExists(String propertyName) {
+if (!project.hasProperty(propertyName)) {
+    throw new GradleException("This project requires a property \"" + propertyName + "\"! Please add it your \"gradle.properties\". You can find all properties and their description here: https://github.com/GTNewHorizons/ExampleMod1.7.10/blob/main/gradle.properties")
+}
+}
+
+def getFile(String relativePath) {
+return new File(projectDir, relativePath)
+}

dependencies.gradle

@@ -0,0 +1,5 @@
+// Add your dependencies here
+
+dependencies {
+
+}

gradle.properties

@@ -1,5 +1,60 @@
-modGroup = com.gtnewhorizon
-modVersion = 1.0.1
-modBaseName = StructureLib
+modName = StructureLib
 
-forgeVersion = 1.7.10-10.13.4.1614-1.7.10
+# This is a case-sensitive string to identify your mod. Convention is to use lower case.
+modId = structurelib
+
+modGroup = com.gtnewhorizon.structurelib
+
+# WHY is there no version field?
+# The build script relies on git to provide a version via tags. It is super easy and will enable you to always know the
+# code base or your binary. Check out this tutorial: https://blog.mattclemente.com/2017/10/13/versioning-with-git-tags/
+
+# Will update your build.gradle automatically whenever an update is available
+autoUpdateBuildScript = false
+
+minecraftVersion = 1.7.10
+forgeVersion = 10.13.4.1614
+
+# Select a username for testing your mod with breakpoints. You may leave this empty for a random user name each time you
+# restart Minecraft in development. Choose this dependent on your mod:
+# Do you need consistent player progressing (for example Thaumcraft)? -> Select a name
+# Do you need to test how your custom blocks interacts with a player that is not the owner? -> leave name empty
+developmentEnvironmentUserName = "Developer"
+
+# Define a source file of your project with:
+# public static final String VERSION = "GRADLETOKEN_VERSION";
+# The string's content will be replaced with your mods version when compiled. You should use this to specify your mod's
+# version in @Mod([...], version = VERSION, [...])
+# Leave these properties empty to skip individual token replacements
+replaceGradleTokenInFile = StructureLib.java
+gradleTokenModId =
+gradleTokenModName =
+gradleTokenVersion = GRADLETOKEN_VERSION
+gradleTokenGroupName =
+
+# In case your mod provides an API for other mods to implement you may declare its package here. Otherwise you can
+# leave this property empty.
+# Example value: apiPackage = api + modGroup = com.myname.mymodid -> com.myname.mymodid.api
+apiPackage =
+
+# Specify the configuration file for Forge's access transformers here. I must be placed into /src/main/resources/META-INF/
+# Example value: mymodid_at.cfg
+accessTransformersFile =
+
+# Provides setup for Mixins if enabled. If you don't know what mixins are: Keep it disabled!
+usesMixins = false
+# Specify the location of your implementation of IMixinConfigPlugin. Leave it empty otherwise.
+mixinPlugin =
+# Specify the package that contains all of your Mixins. You may only place Mixins in this package or the build will fail!
+mixinsPackage =
+# Specify the core mod entry class if you use a core mod. This class must implement IFMLLoadingPlugin!
+# This parameter is for legacy compatability only
+# Example value: coreModClass = asm.FMLPlugin + modGroup = com.myname.mymodid -> com.myname.mymodid.asm.FMLPlugin
+coreModClass =
+# If your project is only a consolidation of mixins or a core mod and does NOT contain a 'normal' mod ( = some class
+# that is annotated with @Mod) you want this to be true. When in doubt: leave it on false!
+containsMixinsAndOrCoreModOnly = false
+
+# If enabled, you may use 'shadowImplementation' for dependencies. They will be integrated in your jar. It is your
+# responsibility check the licence and request permission for distribution, if required.
+usesShadowedDependencies = false

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,5 @@
-#Sat Jan 04 01:52:14 CET 2020
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.9.1-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4.1-bin.zip

gradlew

@@ -1,4 +1,20 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
+
+#
+# Copyright 2015 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
 
 ##############################################################################
 ##
@@ -6,47 +22,6 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
-
-APP_NAME="Gradle"
-APP_BASE_NAME=`basename "$0"`
-
-# Use the maximum available, or set MAX_FD != -1 to use that value.
-MAX_FD="maximum"
-
-warn ( ) {
-    echo "$*"
-}
-
-die ( ) {
-    echo
-    echo "$*"
-    echo
-    exit 1
-}
-
-# OS specific support (must be 'true' or 'false').
-cygwin=false
-msys=false
-darwin=false
-case "`uname`" in
-  CYGWIN* )
-    cygwin=true
-    ;;
-  Darwin* )
-    darwin=true
-    ;;
-  MINGW* )
-    msys=true
-    ;;
-esac
-
-# For Cygwin, ensure paths are in UNIX format before anything is touched.
-if $cygwin ; then
-    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
-fi
-
 # Attempt to set APP_HOME
 # Resolve links: $0 may be a link
 PRG="$0"
@@ -61,9 +36,49 @@ while [ -h "$PRG" ] ; do
     fi
 done
 SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >&-
+cd "`dirname \"$PRG\"`/" >/dev/null
 APP_HOME="`pwd -P`"
-cd "$SAVED" >&-
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
 
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
@@ -90,7 +105,7 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
@@ -110,10 +125,11 @@ if $darwin; then
     GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
 fi
 
-# For Cygwin, switch paths to Windows format before running java
-if $cygwin ; then
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
@@ -154,11 +170,19 @@ if $cygwin ; then
     esac
 fi
 
-# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
-function splitJvmOpts() {
-    JVM_OPTS=("$@")
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
 }
-eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
-JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+APP_ARGS=$(save "$@")
 
-exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"

gradlew.bat

@@ -1,3 +1,19 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
 @if "%DEBUG%" == "" @echo off
 @rem ##########################################################################
 @rem
@@ -8,14 +24,14 @@
 @rem Set local scope for the variables with windows NT shell
 if "%OS%"=="Windows_NT" setlocal
 
-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-set DEFAULT_JVM_OPTS=
-
 set DIRNAME=%~dp0
 if "%DIRNAME%" == "" set DIRNAME=.
 set APP_BASE_NAME=%~n0
 set APP_HOME=%DIRNAME%
 
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
 @rem Find java.exe
 if defined JAVA_HOME goto findJavaFromJavaHome
 
@@ -46,10 +62,9 @@ echo location of your Java installation.
 goto fail
 
 :init
-@rem Get command-line arguments, handling Windowz variants
+@rem Get command-line arguments, handling Windows variants
 
 if not "%OS%" == "Windows_NT" goto win9xME_args
-if "%@eval[2+2]" == "4" goto 4NT_args
 
 :win9xME_args
 @rem Slurp the command line arguments.
@@ -60,11 +75,6 @@ set _SKIP=2
 if "x%~1" == "x" goto execute
 
 set CMD_LINE_ARGS=%*
-goto execute
-
-:4NT_args
-@rem Get arguments from the 4NT Shell from JP Software
-set CMD_LINE_ARGS=%$
 
 :execute
 @rem Setup the command line

jitpack.yml

@@ -0,0 +1,2 @@
+before_install:
+  - ./gradlew setupCIWorkspace

repositories.gradle

@@ -0,0 +1,5 @@
+// Add any additional repositiroes for your dependencies here
+
+repositories {
+
+}

settings.gradle

@@ -0,0 +1,10 @@
+plugins {
+    id 'com.diffplug.blowdryerSetup' version '1.6.0'
+}
+
+apply plugin: 'com.diffplug.blowdryerSetup'
+
+blowdryerSetup {
+    github('GTNewHorizons/ExampleMod1.7.10', 'tag', '0.1.4')
+    //devLocal '.' // Use this when testing config updates locally
+}

src/main/java/com/gtnewhorizon/structurelib/ClientProxy.java

@@ -0,0 +1,193 @@
+package com.gtnewhorizon.structurelib;
+
+import com.google.common.collect.BiMap;
+import com.google.common.collect.HashBiMap;
+import com.gtnewhorizon.structurelib.entity.fx.EntityFXBlockHint;
+import cpw.mods.fml.common.event.FMLPreInitializationEvent;
+import cpw.mods.fml.common.eventhandler.SubscribeEvent;
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.LinkedList;
+import java.util.List;
+import net.minecraft.block.Block;
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.gui.GuiNewChat;
+import net.minecraft.entity.player.EntityPlayer;
+import net.minecraft.entity.player.EntityPlayerMP;
+import net.minecraft.util.ChatComponentText;
+import net.minecraft.util.IIcon;
+import net.minecraft.world.World;
+import net.minecraftforge.common.MinecraftForge;
+import net.minecraftforge.event.world.WorldEvent;
+
+public class ClientProxy extends CommonProxy {
+
+    private static final short[] NO_TINT = {255, 255, 255, 0};
+
+    @Override
+    public void hintParticleTinted(World w, int x, int y, int z, IIcon[] icons, short[] RGBa) {
+        EntityFXBlockHint hint = new EntityFXBlockHint(w, x, y, z, icons).withColorTint(RGBa);
+        Minecraft.getMinecraft().effectRenderer.addEffect(hint);
+        ensureHinting();
+        if (ConfigurationHandler.INSTANCE.isRemoveCollidingHologram()) {
+            HintParticleInfo info = new HintParticleInfo(x, y, z, currentHints);
+            EntityFXBlockHint dupe = allHints.inverse().get(info);
+            if (dupe != null) {
+                List<EntityFXBlockHint> owner = allHints.get(dupe).owner;
+                // in case someone forget to call endHinting
+                if (owner != currentHints) {
+                    hintOwners.remove(owner);
+                    owner.forEach(EntityFXBlockHint::setDead);
+                    owner.clear();
+                }
+            }
+            allHints.forcePut(hint, info);
+        }
+        currentHints.add(hint);
+    }
+
+    @Override
+    public void hintParticleTinted(World w, int x, int y, int z, Block block, int meta, short[] RGBa) {
+        hintParticleTinted(w, x, y, z, createIIconFromBlock(block, meta), RGBa);
+    }
+
+    @Override
+    public void hintParticle(World w, int x, int y, int z, IIcon[] icons) {
+        hintParticleTinted(w, x, y, z, icons, NO_TINT);
+    }
+
+    @Override
+    public void hintParticle(World w, int x, int y, int z, Block block, int meta) {
+        hintParticleTinted(w, x, y, z, createIIconFromBlock(block, meta), NO_TINT);
+    }
+
+    @Override
+    public boolean updateHintParticleTint(EntityPlayer player, World w, int x, int y, int z, short[] rgBa) {
+        if (player instanceof EntityPlayerMP) return super.updateHintParticleTint(player, w, x, y, z, rgBa);
+        if (player != getCurrentPlayer()) return false; // how?
+        HintParticleInfo info = new HintParticleInfo(x, y, z, null);
+        EntityFXBlockHint existing = allHints.inverse().get(info);
+        if (existing != null) {
+            existing.withColorTint(rgBa);
+            return true;
+        }
+        return false;
+    }
+
+    private static IIcon[] createIIconFromBlock(Block block, int meta) {
+        IIcon[] ret = new IIcon[6];
+        for (int i = 0; i < 6; i++) {
+            ret[i] = block.getIcon(i, meta);
+        }
+        return ret;
+    }
+
+    @Override
+    public void addClientSideChatMessages(String... messages) {
+        GuiNewChat chat = Minecraft.getMinecraft().ingameGUI.getChatGUI();
+        for (String s : messages) {
+            chat.printChatMessage(new ChatComponentText(s));
+        }
+    }
+
+    @Override
+    public EntityPlayer getCurrentPlayer() {
+        return Minecraft.getMinecraft().thePlayer;
+    }
+
+    @Override
+    public boolean isCurrentPlayer(EntityPlayer player) {
+        return player == Minecraft.getMinecraft().thePlayer;
+    }
+
+    private static final BiMap<EntityFXBlockHint, HintParticleInfo> allHints = HashBiMap.create();
+    private static final List<List<EntityFXBlockHint>> hintOwners = new ArrayList<>();
+    private static List<EntityFXBlockHint> currentHints;
+
+    public static void onHintDead(EntityFXBlockHint fx) {
+        if (ConfigurationHandler.INSTANCE.isRemoveCollidingHologram()) allHints.remove(fx);
+        for (Iterator<List<EntityFXBlockHint>> iterator = hintOwners.iterator(); iterator.hasNext(); ) {
+            List<EntityFXBlockHint> list = iterator.next();
+            if (list.remove(fx)) {
+                if (list.isEmpty()) iterator.remove();
+                break;
+            }
+        }
+    }
+
+    @Override
+    public void startHinting(World w) {
+        if (!w.isRemote) return;
+        if (currentHints != null) hintOwners.add(currentHints);
+        currentHints = new LinkedList<>();
+    }
+
+    private void ensureHinting() {
+        if (currentHints == null) currentHints = new LinkedList<>();
+    }
+
+    @Override
+    public void endHinting(World w) {
+        if (!w.isRemote) return;
+        while (!hintOwners.isEmpty() && hintOwners.size() >= ConfigurationHandler.INSTANCE.getMaxCoexistingHologram()) {
+            List<EntityFXBlockHint> list = hintOwners.remove(0);
+            list.forEach(EntityFXBlockHint::setDead);
+            list.clear();
+        }
+        if (!currentHints.isEmpty()) hintOwners.add(currentHints);
+        currentHints = null;
+    }
+
+    @Override
+    public void preInit(FMLPreInitializationEvent e) {
+        MinecraftForge.EVENT_BUS.register(new ForgeEventHandler());
+    }
+
+    @Override
+    public long getOverworldTime() {
+        // there is no overworld, better just hope current world time is ok...
+        return Minecraft.getMinecraft().theWorld.getTotalWorldTime();
+    }
+
+    private static class HintParticleInfo {
+        private final int x, y, z;
+        private final List<EntityFXBlockHint> owner;
+
+        public HintParticleInfo(int x, int y, int z, List<EntityFXBlockHint> owner) {
+            this.x = x;
+            this.y = y;
+            this.z = z;
+            this.owner = owner;
+        }
+
+        @Override
+        public boolean equals(Object o) {
+            if (this == o) return true;
+            if (o == null || getClass() != o.getClass()) return false;
+
+            HintParticleInfo that = (HintParticleInfo) o;
+
+            if (x != that.x) return false;
+            if (y != that.y) return false;
+            return z == that.z;
+        }
+
+        @Override
+        public int hashCode() {
+            int result = x;
+            result = 31 * result + y;
+            result = 31 * result + z;
+            return result;
+        }
+    }
+
+    public static class ForgeEventHandler {
+        @SubscribeEvent
+        public void onWorldLoad(WorldEvent.Load e) {
+            if (e.world.isRemote) {
+                allHints.clear();
+                hintOwners.clear();
+            }
+        }
+    }
+}

src/main/java/com/gtnewhorizon/structurelib/CommonProxy.java

@@ -0,0 +1,51 @@
+package com.gtnewhorizon.structurelib;
+
+import com.gtnewhorizon.structurelib.net.UpdateHintParticleMessage;
+import cpw.mods.fml.common.event.FMLPreInitializationEvent;
+import net.minecraft.block.Block;
+import net.minecraft.entity.player.EntityPlayer;
+import net.minecraft.entity.player.EntityPlayerMP;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.util.IIcon;
+import net.minecraft.world.World;
+
+public class CommonProxy {
+    public void hintParticleTinted(World w, int x, int y, int z, IIcon[] icons, short[] RGBa) {}
+
+    public void hintParticleTinted(World w, int x, int y, int z, Block block, int meta, short[] RGBa) {}
+
+    public void hintParticle(World w, int x, int y, int z, IIcon[] icons) {}
+
+    public void hintParticle(World w, int x, int y, int z, Block block, int meta) {}
+
+    public boolean updateHintParticleTint(EntityPlayer player, World w, int x, int y, int z, short[] rgBa) {
+        if (player instanceof EntityPlayerMP) { // just in case
+            StructureLib.net.sendTo(
+                    new UpdateHintParticleMessage(x, (short) y, z, rgBa[0], rgBa[1], rgBa[2], rgBa[3]),
+                    (EntityPlayerMP) player);
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    public EntityPlayer getCurrentPlayer() {
+        return null;
+    }
+
+    public boolean isCurrentPlayer(EntityPlayer player) {
+        return false;
+    }
+
+    public void addClientSideChatMessages(String... messages) {}
+
+    public void startHinting(World w) {}
+
+    public void endHinting(World w) {}
+
+    public void preInit(FMLPreInitializationEvent e) {}
+
+    public long getOverworldTime() {
+        return MinecraftServer.getServer().getEntityWorld().getTotalWorldTime();
+    }
+}

src/main/java/com/gtnewhorizon/structurelib/ConfigurationHandler.java

@@ -0,0 +1,77 @@
+package com.gtnewhorizon.structurelib;
+
+import cpw.mods.fml.client.event.ConfigChangedEvent;
+import cpw.mods.fml.common.FMLCommonHandler;
+import cpw.mods.fml.common.eventhandler.SubscribeEvent;
+import java.io.File;
+import java.util.Map;
+import net.minecraftforge.common.config.ConfigCategory;
+import net.minecraftforge.common.config.Configuration;
+import net.minecraftforge.common.config.Property;
+
+public enum ConfigurationHandler {
+    INSTANCE;
+
+    private Configuration config;
+    private int maxCoexistingHologram;
+    private boolean removeCollidingHologram;
+
+    ConfigurationHandler() {
+        FMLCommonHandler.instance().bus().register(this);
+    }
+
+    void init(File f) {
+        config = new Configuration(f, ConfigurationVersion.latest().getVersionMarker());
+        ConfigurationVersion.migrateToLatest(config);
+        loadConfig();
+        setLanguageKeys();
+    }
+
+    private void setLanguageKeys() {
+        for (String categoryName : config.getCategoryNames()) {
+            ConfigCategory category = config.getCategory(categoryName);
+            category.setLanguageKey("structurelib.config." + categoryName);
+            for (Map.Entry<String, Property> entry : category.entrySet()) {
+                entry.getValue().setLanguageKey(String.format("%s.%s", category.getLanguagekey(), entry.getKey()));
+            }
+        }
+    }
+
+    private void loadConfig() {
+        maxCoexistingHologram = config.getInt(
+                "maxCoexisting",
+                "client.hologram",
+                1,
+                1,
+                100,
+                "An attempt will be made to prune old holograms when a new hologram is about to be projected");
+        removeCollidingHologram = config.getBoolean(
+                "removeColliding",
+                "client.hologram",
+                true,
+                "An attempt will be made to remove an existing hologram if it collides with a new hologram.");
+
+        if (config.hasChanged()) {
+            config.save();
+        }
+    }
+
+    @SubscribeEvent
+    public void onConfigChange(ConfigChangedEvent.PostConfigChangedEvent e) {
+        if (e.modID.equals(StructureLibAPI.MOD_ID)) {
+            loadConfig();
+        }
+    }
+
+    public int getMaxCoexistingHologram() {
+        return maxCoexistingHologram;
+    }
+
+    public boolean isRemoveCollidingHologram() {
+        return removeCollidingHologram;
+    }
+
+    Configuration getConfig() {
+        return config;
+    }
+}

src/main/java/com/gtnewhorizon/structurelib/ConfigurationVersion.java

@@ -0,0 +1,45 @@
+package com.gtnewhorizon.structurelib;
+
+import java.util.Arrays;
+import java.util.Objects;
+import javax.annotation.Nullable;
+import net.minecraftforge.common.config.Configuration;
+
+enum ConfigurationVersion {
+    V1 {
+        @Override
+        protected void step(Configuration c) {}
+    };
+
+    private static final ConfigurationVersion[] VALUES = values();
+
+    private final String versionMarker;
+
+    ConfigurationVersion() {
+        this.versionMarker = name();
+    }
+
+    public static void migrateToLatest(Configuration c) {
+        for (int i = identify(c).ordinal() + 1; i < VALUES.length; i++) {
+            VALUES[i].step(c);
+        }
+    }
+
+    public static ConfigurationVersion latest() {
+        return VALUES[VALUES.length - 1];
+    }
+
+    public static ConfigurationVersion identify(Configuration c) {
+        return Arrays.stream(VALUES)
+                .filter(v -> Objects.equals(c.getLoadedConfigVersion(), v.getVersionMarker()))
+                .findFirst()
+                .orElse(V1);
+    }
+
+    @Nullable
+    public String getVersionMarker() {
+        return versionMarker;
+    }
+
+    protected abstract void step(Configuration c);
+}

src/main/java/com/gtnewhorizon/structurelib/GuiFactory.java

@@ -0,0 +1,26 @@
+package com.gtnewhorizon.structurelib;
+
+import cpw.mods.fml.client.IModGuiFactory;
+import java.util.Set;
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.gui.GuiScreen;
+
+public class GuiFactory implements IModGuiFactory {
+    @Override
+    public void initialize(Minecraft minecraftInstance) {}
+
+    @Override
+    public Class<? extends GuiScreen> mainConfigGuiClass() {
+        return GuiModConfig.class;
+    }
+
+    @Override
+    public Set<RuntimeOptionCategoryElement> runtimeGuiCategories() {
+        return null;
+    }
+
+    @Override
+    public RuntimeOptionGuiHandler getHandlerFor(RuntimeOptionCategoryElement element) {
+        return null;
+    }
+}

src/main/java/com/gtnewhorizon/structurelib/GuiModConfig.java

@@ -0,0 +1,31 @@
+package com.gtnewhorizon.structurelib;
+
+import cpw.mods.fml.client.config.GuiConfig;
+import cpw.mods.fml.client.config.IConfigElement;
+import java.util.List;
+import java.util.stream.Collectors;
+import net.minecraft.client.gui.GuiScreen;
+import net.minecraftforge.common.config.ConfigElement;
+import net.minecraftforge.common.config.Configuration;
+
+public class GuiModConfig extends GuiConfig {
+    public GuiModConfig(GuiScreen guiScreen) {
+        super(
+                guiScreen,
+                getConfigElements(),
+                StructureLibAPI.MOD_ID,
+                false,
+                false,
+                GuiConfig.getAbridgedConfigPath(
+                        ConfigurationHandler.INSTANCE.getConfig().toString()));
+    }
+
+    @SuppressWarnings("rawtypes")
+    private static List<IConfigElement> getConfigElements() {
+        final Configuration config = ConfigurationHandler.INSTANCE.getConfig();
+        return config.getCategoryNames().stream()
+                .filter(name -> name.indexOf('.') == -1)
+                .map(name -> new ConfigElement(config.getCategory(name)))
+                .collect(Collectors.toList());
+    }
+}

src/main/java/com/gtnewhorizon/structurelib/StructureLib.java

@@ -1,10 +1,11 @@
 package com.gtnewhorizon.structurelib;
 
-import com.gtnewhorizon.structurelib.alignment.AlignmentMessage;
 import com.gtnewhorizon.structurelib.block.BlockHint;
 import com.gtnewhorizon.structurelib.item.ItemBlockHint;
+import com.gtnewhorizon.structurelib.item.ItemConstructableTrigger;
 import com.gtnewhorizon.structurelib.item.ItemFrontRotationTool;
-import com.gtnewhorizon.structurelib.proxy.CommonProxy;
+import com.gtnewhorizon.structurelib.net.AlignmentMessage;
+import com.gtnewhorizon.structurelib.net.UpdateHintParticleMessage;
 import com.gtnewhorizon.structurelib.util.XSTR;
 import cpw.mods.fml.common.Mod;
 import cpw.mods.fml.common.SidedProxy;
@@ -25,50 +26,71 @@ import org.apache.logging.log4j.Logger;
 /**
  * This class does not contain a stable API. Refrain from using this class.
  */
-@Mod(modid = StructureLib.MOD_ID, name = "StructureLib", version = "${version}", acceptableRemoteVersions = "*")
+@Mod(
+        modid = StructureLibAPI.MOD_ID,
+        name = "StructureLib",
+        version = "GRADLETOKEN_VERSION",
+        acceptableRemoteVersions = "*",
+        guiFactory = "com.gtnewhorizon.structurelib.GuiFactory")
 public class StructureLib {
-	public static boolean DEBUG_MODE = true;
-	public static Logger LOGGER = LogManager.getLogger("StructureLib");
-	public static final String MOD_ID = "structurelib";
+    public static boolean DEBUG_MODE = Boolean.getBoolean("structurelib.debug");
+    public static boolean PANIC_MODE = Boolean.getBoolean("structurelib.panic");
+    public static Logger LOGGER = LogManager.getLogger("StructureLib");
 
-	@SidedProxy(serverSide = "com.gtnewhorizon.structurelib.proxy.CommonProxy", clientSide = "com.gtnewhorizon.structurelib.proxy.ClientProxy")
-	static CommonProxy proxy;
-	static SimpleNetworkWrapper net = NetworkRegistry.INSTANCE.newSimpleChannel(MOD_ID);
+    @SidedProxy(
+            serverSide = "com.gtnewhorizon.structurelib.CommonProxy",
+            clientSide = "com.gtnewhorizon.structurelib.ClientProxy")
+    static CommonProxy proxy;
 
-	static {
-		net.registerMessage(AlignmentMessage.ServerHandler.class, AlignmentMessage.AlignmentQuery.class, 0, Side.SERVER);
-		net.registerMessage(AlignmentMessage.ClientHandler.class, AlignmentMessage.AlignmentData.class, 1, Side.CLIENT);
-	}
+    static SimpleNetworkWrapper net = NetworkRegistry.INSTANCE.newSimpleChannel(StructureLibAPI.MOD_ID);
 
-	public static final XSTR RANDOM = new XSTR();
+    static {
+        net.registerMessage(
+                AlignmentMessage.ServerHandler.class, AlignmentMessage.AlignmentQuery.class, 0, Side.SERVER);
+        net.registerMessage(AlignmentMessage.ClientHandler.class, AlignmentMessage.AlignmentData.class, 1, Side.CLIENT);
+        net.registerMessage(UpdateHintParticleMessage.Handler.class, UpdateHintParticleMessage.class, 2, Side.CLIENT);
+    }
 
-	static Block blockHint;
-	static Item itemBlockHint;
-	static Item itemFrontRotationTool;
-	public static final CreativeTabs creativeTab = new CreativeTabs("structurelib") {
-		@Override
-		@SideOnly(Side.CLIENT)
-		public Item getTabIconItem() {
-			return StructureLibAPI.getItemBlockHint();
-		}
-	};
+    public static final XSTR RANDOM = new XSTR();
 
-	@Mod.EventHandler
-	public void preInit(FMLPreInitializationEvent e) {
-		GameRegistry.registerBlock(blockHint = new BlockHint(), ItemBlockHint.class, "blockhint");
-		itemBlockHint = ItemBlock.getItemFromBlock(StructureLibAPI.getBlockHint());
-		GameRegistry.registerItem(itemFrontRotationTool = new ItemFrontRotationTool(), itemFrontRotationTool.getUnlocalizedName());
-	}
+    static Block blockHint;
+    static Item itemBlockHint;
+    static Item itemFrontRotationTool;
+    static Item itemConstructableTrigger;
+    public static final CreativeTabs creativeTab = new CreativeTabs("structurelib") {
+        @Override
+        @SideOnly(Side.CLIENT)
+        public Item getTabIconItem() {
+            return StructureLibAPI.getItemBlockHint();
+        }
+    };
 
-	public static void addClientSideChatMessages(String... messages) {
-		proxy.addClientSideChatMessages(messages);
-	}
+    @Mod.EventHandler
+    public void preInit(FMLPreInitializationEvent e) {
+        ConfigurationHandler.INSTANCE.init(e.getSuggestedConfigurationFile());
+        GameRegistry.registerBlock(blockHint = new BlockHint(), ItemBlockHint.class, "blockhint");
+        itemBlockHint = ItemBlock.getItemFromBlock(StructureLibAPI.getBlockHint());
+        GameRegistry.registerItem(
+                itemFrontRotationTool = new ItemFrontRotationTool(), itemFrontRotationTool.getUnlocalizedName());
+        GameRegistry.registerItem(
+                itemConstructableTrigger = new ItemConstructableTrigger(),
+                itemConstructableTrigger.getUnlocalizedName());
+        proxy.preInit(e);
+    }
 
-	public static EntityPlayer getCurrentPlayer() {
-		return proxy.getCurrentPlayer();
-	}
+    public static void addClientSideChatMessages(String... messages) {
+        proxy.addClientSideChatMessages(messages);
+    }
 
-	public static boolean isCurrentPlayer(EntityPlayer player) {
-		return proxy.isCurrentPlayer(player);
-	}
+    public static EntityPlayer getCurrentPlayer() {
+        return proxy.getCurrentPlayer();
+    }
+
+    public static boolean isCurrentPlayer(EntityPlayer player) {
+        return proxy.isCurrentPlayer(player);
+    }
+
+    public static long getOverworldTime() {
+        return proxy.getOverworldTime();
+    }
 }

src/main/java/com/gtnewhorizon/structurelib/StructureLibAPI.java

@@ -1,74 +1,155 @@
 package com.gtnewhorizon.structurelib;
 
-import com.gtnewhorizon.structurelib.alignment.AlignmentMessage;
-import com.gtnewhorizon.structurelib.alignment.IAlignmentProvider;
-import cpw.mods.fml.common.network.NetworkRegistry;
-import net.minecraft.block.Block;
-import net.minecraft.entity.player.EntityPlayerMP;
-import net.minecraft.item.Item;
-import net.minecraft.util.IIcon;
-import net.minecraft.world.World;
-
 import static com.gtnewhorizon.structurelib.StructureLib.proxy;
 
+import com.gtnewhorizon.structurelib.alignment.IAlignmentProvider;
+import com.gtnewhorizon.structurelib.alignment.enumerable.ExtendedFacing;
+import com.gtnewhorizon.structurelib.net.AlignmentMessage;
+import com.gtnewhorizon.structurelib.structure.IItemSource;
+import cpw.mods.fml.common.network.NetworkRegistry;
+import net.minecraft.block.Block;
+import net.minecraft.entity.player.EntityPlayer;
+import net.minecraft.entity.player.EntityPlayerMP;
+import net.minecraft.item.Item;
+import net.minecraft.item.ItemStack;
+import net.minecraft.util.IIcon;
+import net.minecraft.world.World;
+
+/**
+ * A stable interface into the structure lib's internals. Backwards compatibility is maintained to the maximum extend possible.
+ */
 public class StructureLibAPI {
-	public static final int HINT_BLOCK_META_GENERIC_0 = 0;
-	public static final int HINT_BLOCK_META_GENERIC_1 = 1;
-	public static final int HINT_BLOCK_META_GENERIC_2 = 2;
-	public static final int HINT_BLOCK_META_GENERIC_3 = 3;
-	public static final int HINT_BLOCK_META_GENERIC_4 = 4;
-	public static final int HINT_BLOCK_META_GENERIC_5 = 5;
-	public static final int HINT_BLOCK_META_GENERIC_6 = 6;
-	public static final int HINT_BLOCK_META_GENERIC_7 = 7;
-	public static final int HINT_BLOCK_META_GENERIC_8 = 8;
-	public static final int HINT_BLOCK_META_GENERIC_9 = 9;
-	public static final int HINT_BLOCK_META_GENERIC_10 = 10;
-	public static final int HINT_BLOCK_META_GENERIC_11 = 11;
-	public static final int HINT_BLOCK_META_DEFAULT = 12;
-	public static final int HINT_BLOCK_META_AIR = 13;
-	public static final int HINT_BLOCK_META_NOT_AIR = 14;
-	public static final int HINT_BLOCK_META_ERROR = 15;
-	public static void hintParticleTinted(World w, int x, int y, int z, IIcon[] icons, short[] RGBa) {
-		proxy.hintParticleTinted(w, x, y, z, icons, RGBa);
-	}
+    public static final String MOD_ID = "structurelib";
+    public static final int HINT_BLOCK_META_GENERIC_0 = 0;
+    public static final int HINT_BLOCK_META_GENERIC_1 = 1;
+    public static final int HINT_BLOCK_META_GENERIC_2 = 2;
+    public static final int HINT_BLOCK_META_GENERIC_3 = 3;
+    public static final int HINT_BLOCK_META_GENERIC_4 = 4;
+    public static final int HINT_BLOCK_META_GENERIC_5 = 5;
+    public static final int HINT_BLOCK_META_GENERIC_6 = 6;
+    public static final int HINT_BLOCK_META_GENERIC_7 = 7;
+    public static final int HINT_BLOCK_META_GENERIC_8 = 8;
+    public static final int HINT_BLOCK_META_GENERIC_9 = 9;
+    public static final int HINT_BLOCK_META_GENERIC_10 = 10;
+    public static final int HINT_BLOCK_META_GENERIC_11 = 11;
+    public static final int HINT_BLOCK_META_DEFAULT = 12;
+    public static final int HINT_BLOCK_META_AIR = 13;
+    public static final int HINT_BLOCK_META_NOT_AIR = 14;
+    public static final int HINT_BLOCK_META_ERROR = 15;
 
-	public static void hintParticleTinted(World w, int x, int y, int z, Block block, int meta, short[] RGBa) {
-		proxy.hintParticleTinted(w, x, y, z, block, meta, RGBa);
-	}
+    /**
+     * Start a batch of hinting. All hints particles generated during one batch will be considered to belong to one hologram.
+     * <p>
+     * You don't need to call this unless your constructable tool didn't call {@link com.gtnewhorizon.structurelib.alignment.constructable.ConstructableUtility#handle(ItemStack, EntityPlayer, World, int, int, int, int)}
+     */
+    public static void startHinting(World w) {
+        proxy.startHinting(w);
+    }
 
-	public static void hintParticle(World w, int x, int y, int z, IIcon[] icons) {
-		proxy.hintParticle(w, x, y, z, icons);
-	}
+    /**
+     * End current batch of hinting. All hints particles generated during one batch will be considered to belong to one hologram.
+     * <p>
+     * You don't need to call this unless your constructable tool didn't call {@link com.gtnewhorizon.structurelib.alignment.constructable.ConstructableUtility#handle(ItemStack, EntityPlayer, World, int, int, int, int)}
+     */
+    public static void endHinting(World w) {
+        proxy.endHinting(w);
+    }
 
-	public static void hintParticle(World w, int x, int y, int z, Block block, int meta) {
-		proxy.hintParticle(w, x, y, z, block, meta);
-	}
+    public static void hintParticleTinted(World w, int x, int y, int z, IIcon[] icons, short[] RGBa) {
+        proxy.hintParticleTinted(w, x, y, z, icons, RGBa);
+    }
 
-	public static void queryAlignment(IAlignmentProvider provider) {
-		StructureLib.net.sendToServer(new AlignmentMessage.AlignmentQuery(provider));
-	}
+    public static void hintParticleTinted(World w, int x, int y, int z, Block block, int meta, short[] RGBa) {
+        proxy.hintParticleTinted(w, x, y, z, block, meta, RGBa);
+    }
 
-	public static void sendAlignment(IAlignmentProvider provider) {
-		StructureLib.net.sendToAll(new AlignmentMessage.AlignmentData(provider));
-	}
+    public static void hintParticle(World w, int x, int y, int z, IIcon[] icons) {
+        proxy.hintParticle(w, x, y, z, icons);
+    }
 
-	public static void sendAlignment(IAlignmentProvider provider, EntityPlayerMP player) {
-		StructureLib.net.sendTo(new AlignmentMessage.AlignmentData(provider), player);
-	}
+    public static void hintParticle(World w, int x, int y, int z, Block block, int meta) {
+        proxy.hintParticle(w, x, y, z, block, meta);
+    }
 
-	public static void sendAlignment(IAlignmentProvider provider, NetworkRegistry.TargetPoint targetPoint) {
-		StructureLib.net.sendToAllAround(new AlignmentMessage.AlignmentData(provider), targetPoint);
-	}
+    /**
+     * Update the tint of given hint particle. Do nothing if particle not found.
+     * @return false if nothing updated. true if updated.
+     */
+    public static boolean updateHintParticleTint(EntityPlayer player, World w, int x, int y, int z, short[] RGBa) {
+        return proxy.updateHintParticleTint(player, w, x, y, z, RGBa);
+    }
 
-	public static void sendAlignment(IAlignmentProvider provider, World dimension) {
-		StructureLib.net.sendToDimension(new AlignmentMessage.AlignmentData(provider), dimension.provider.dimensionId);
-	}
+    /**
+     * Query the ExtendedFacing of this tile entity.
+     * The ExtendedFacing will later be set onto given tile entity via {@link com.gtnewhorizon.structurelib.alignment.IAlignment#setExtendedFacing(ExtendedFacing)}
+     * upon arrival of server reply.
+     *
+     * @throws IllegalArgumentException if is not tile entity or provided a null alignment
+     */
+    public static void queryAlignment(IAlignmentProvider provider) {
+        StructureLib.net.sendToServer(new AlignmentMessage.AlignmentQuery(provider));
+    }
 
-	public static Block getBlockHint() {
-		return StructureLib.blockHint;
-	}
+    /**
+     * Send the ExtendedFacing of this Tile Entity to all players. Can be called on server side only.
+     *
+     * @throws IllegalArgumentException if is not tile entity or provided a null alignment
+     */
+    public static void sendAlignment(IAlignmentProvider provider) {
+        StructureLib.net.sendToAll(new AlignmentMessage.AlignmentData(provider));
+    }
 
-	public static Item getItemBlockHint() {
-		return StructureLib.itemBlockHint;
-	}
+    /**
+     * Send the ExtendedFacing of this Tile Entity to given player. Can be called on server side only.
+     *
+     * @throws IllegalArgumentException if is not tile entity or provided a null alignment
+     */
+    public static void sendAlignment(IAlignmentProvider provider, EntityPlayerMP player) {
+        StructureLib.net.sendTo(new AlignmentMessage.AlignmentData(provider), player);
+    }
+
+    /**
+     * Send the ExtendedFacing of this Tile Entity to all players around target point. Can be called on server side only.
+     *
+     * @throws IllegalArgumentException if is not tile entity or provided a null alignment
+     */
+    public static void sendAlignment(IAlignmentProvider provider, NetworkRegistry.TargetPoint targetPoint) {
+        StructureLib.net.sendToAllAround(new AlignmentMessage.AlignmentData(provider), targetPoint);
+    }
+
+    /**
+     * Send the ExtendedFacing of this Tile Entity to all players in that dimension. Can be called on server side only.
+     *
+     * @throws IllegalArgumentException if is not tile entity or provided a null alignment
+     */
+    public static void sendAlignment(IAlignmentProvider provider, World dimension) {
+        StructureLib.net.sendToDimension(new AlignmentMessage.AlignmentData(provider), dimension.provider.dimensionId);
+    }
+
+    public static Block getBlockHint() {
+        return StructureLib.blockHint;
+    }
+
+    public static Item getItemBlockHint() {
+        return StructureLib.itemBlockHint;
+    }
+
+    public static boolean isDebugEnabled() {
+        return StructureLib.DEBUG_MODE;
+    }
+
+    public static void setDebugEnabled(boolean enabled) {
+        StructureLib.DEBUG_MODE = enabled;
+    }
+
+    /**
+     * Determines if given block can be replaced without much effort. The exact predicate clauses is not stable and
+     * will be changed, but the general idea will always stay the same.
+     *
+     * Use this in your {@link com.gtnewhorizon.structurelib.structure.IStructureElement#survivalPlaceBlock(Object, World, int, int, int, ItemStack, IItemSource, EntityPlayerMP, java.util.function.Consumer)}
+     */
+    public static boolean isBlockTriviallyReplaceable(World w, int x, int y, int z, EntityPlayerMP actor) {
+        // TODO extend this function a bit
+        return w.getBlock(x, y, z).isReplaceable(w, x, y, z);
+    }
 }

src/main/java/com/gtnewhorizon/structurelib/alignment/AlignmentUtility.java

@@ -7,10 +7,9 @@ import net.minecraft.world.World;
 import net.minecraftforge.common.util.FakePlayer;
 
 public class AlignmentUtility {
-    private AlignmentUtility(){
-    }
+    private AlignmentUtility() {}
 
-    public static boolean handle(EntityPlayer aPlayer, World aWorld, int aX, int aY, int aZ){
+    public static boolean handle(EntityPlayer aPlayer, World aWorld, int aX, int aY, int aZ) {
         TileEntity tTileEntity = aWorld.getTileEntity(aX, aY, aZ);
         if (tTileEntity == null || aPlayer instanceof FakePlayer) {
             return aPlayer instanceof EntityPlayerMP;

src/main/java/com/gtnewhorizon/structurelib/alignment/IAlignment.java

@@ -6,61 +6,67 @@ import com.gtnewhorizon.structurelib.alignment.enumerable.Flip;
 import com.gtnewhorizon.structurelib.alignment.enumerable.Rotation;
 import net.minecraftforge.common.util.ForgeDirection;
 
-public interface IAlignment extends IAlignmentLimits,IAlignmentProvider {
-    int DIRECTIONS_COUNT= Direction.VALUES.length;
-    int ROTATIONS_COUNT= Rotation.VALUES.length;
-    int FLIPS_COUNT= Flip.VALUES.length;
+public interface IAlignment extends IAlignmentLimits, IAlignmentProvider {
+    int DIRECTIONS_COUNT = Direction.VALUES.length;
+    int ROTATIONS_COUNT = Rotation.VALUES.length;
+    int FLIPS_COUNT = Flip.VALUES.length;
     int STATES_COUNT = ExtendedFacing.STATES_COUNT;
 
     ExtendedFacing getExtendedFacing();
 
+    /**
+     * Set the facing without additional checks.
+     * Tools altering facing should use {@link #toolSetExtendedFacing(ExtendedFacing)} instead.
+     */
     void setExtendedFacing(ExtendedFacing alignment);
 
     IAlignmentLimits getAlignmentLimits();
 
     @Override
-    default IAlignment getAlignment(){
+    default IAlignment getAlignment() {
         return this;
     }
 
-    static int getAlignmentIndex(ForgeDirection direction, Rotation rotation, Flip flip){
-        return (direction.ordinal()*ROTATIONS_COUNT+rotation.getIndex())*FLIPS_COUNT+flip.getIndex();
+    static int getAlignmentIndex(ForgeDirection direction, Rotation rotation, Flip flip) {
+        return (direction.ordinal() * ROTATIONS_COUNT + rotation.getIndex()) * FLIPS_COUNT + flip.getIndex();
     }
 
-    default ForgeDirection getDirection(){
+    default ForgeDirection getDirection() {
         return getExtendedFacing().getDirection();
     }
 
-    default void setDirection(ForgeDirection direction){
+    default void setDirection(ForgeDirection direction) {
         setExtendedFacing(getExtendedFacing().with(direction));
     }
 
-    default Rotation getRotation(){
+    default Rotation getRotation() {
         return getExtendedFacing().getRotation();
     }
 
-    default void setRotation(Rotation rotation){
+    default void setRotation(Rotation rotation) {
         setExtendedFacing(getExtendedFacing().with(rotation));
     }
 
-    default Flip getFlip(){
+    default Flip getFlip() {
         return getExtendedFacing().getFlip();
     }
 
-    default void setFlip(Flip flip){
+    default void setFlip(Flip flip) {
         setExtendedFacing(getExtendedFacing().with(flip));
     }
 
-    default boolean toolSetDirection(ForgeDirection direction){
-        if(direction==null || direction==ForgeDirection.UNKNOWN){
-            for (int i = 0,j=getDirection().ordinal()+1, valuesLength = Direction.VALUES.length; i < valuesLength; i++) {
-                if(toolSetDirection(Direction.VALUES[j%valuesLength].getForgeDirection())){
+    default boolean toolSetDirection(ForgeDirection direction) {
+        if (direction == null || direction == ForgeDirection.UNKNOWN) {
+            for (int i = 0, j = getDirection().ordinal() + 1, valuesLength = Direction.VALUES.length;
+                    i < valuesLength;
+                    i++) {
+                if (toolSetDirection(Direction.VALUES[(j + i) % valuesLength].getForgeDirection())) {
                     return true;
                 }
             }
-        }else {
+        } else {
             for (ExtendedFacing extendedFacing : ExtendedFacing.FOR_FACING.get(direction)) {
-                if(checkedSetExtendedFacing(extendedFacing)){
+                if (checkedSetExtendedFacing(extendedFacing)) {
                     return true;
                 }
             }
@@ -68,17 +74,17 @@ public interface IAlignment extends IAlignmentLimits,IAlignmentProvider {
         return false;
     }
 
-    default boolean checkedSetDirection(ForgeDirection direction){
-        if (isNewDirectionValid(direction)){
+    default boolean checkedSetDirection(ForgeDirection direction) {
+        if (isNewDirectionValid(direction)) {
             setDirection(direction);
             return true;
         }
         return false;
     }
 
-    default boolean canSetToDirectionAny(ForgeDirection direction){
+    default boolean canSetToDirectionAny(ForgeDirection direction) {
         for (ExtendedFacing extendedFacing : ExtendedFacing.FOR_FACING.get(direction)) {
-            if(isNewExtendedFacingValid(extendedFacing)){
+            if (isNewExtendedFacingValid(extendedFacing)) {
                 return true;
             }
         }
@@ -86,66 +92,69 @@ public interface IAlignment extends IAlignmentLimits,IAlignmentProvider {
     }
 
     default boolean toolSetRotation(Rotation rotation) {
-        if(rotation==null){
+        if (rotation == null) {
             int flips = Flip.VALUES.length;
             int rotations = Rotation.VALUES.length;
-            for (int ii = 0,jj=getFlip().ordinal(); ii < flips; ii++) {
-                for (int i = 0,j=getRotation().ordinal()+1; i < rotations; i++) {
-                    if(checkedSetExtendedFacing(ExtendedFacing.of(getDirection(),Rotation.VALUES[j%rotations],Flip.VALUES[jj%flips]))){
+            for (int ii = 0, jj = getFlip().ordinal(); ii < flips; ii++) {
+                for (int i = 1, j = getRotation().ordinal(); i < rotations; i++) {
+                    if (checkedSetExtendedFacing(ExtendedFacing.of(
+                            getDirection(), Rotation.VALUES[(j + i) % rotations], Flip.VALUES[(jj + ii) % flips]))) {
                         return true;
                     }
                 }
             }
             return false;
-        }else {
+        } else {
             return checkedSetRotation(rotation);
         }
     }
 
-    default boolean checkedSetRotation(Rotation rotation){
-        if (isNewRotationValid(rotation)){
+    default boolean checkedSetRotation(Rotation rotation) {
+        if (isNewRotationValid(rotation)) {
             setRotation(rotation);
             return true;
         }
         return false;
     }
 
-    default boolean toolSetFlip(Flip flip){
-        if(flip==null){
-            for (int i = 0,j=getFlip().ordinal()+1, valuesLength = Flip.VALUES.length; i < valuesLength; i++) {
-                if(toolSetFlip(Flip.VALUES[j%valuesLength])){
+    default boolean toolSetFlip(Flip flip) {
+        if (flip == null) {
+            for (int i = 1, j = getFlip().ordinal(), valuesLength = Flip.VALUES.length; i < valuesLength; i++) {
+                if (checkedSetFlip(Flip.VALUES[(j + i) % valuesLength])) {
                     return true;
                 }
             }
             return false;
-        }else {
+        } else {
             return checkedSetFlip(flip);
         }
     }
 
-    default boolean checkedSetFlip(Flip flip){
-        if (isNewFlipValid(flip)){
+    default boolean checkedSetFlip(Flip flip) {
+        if (isNewFlipValid(flip)) {
             setFlip(flip);
             return true;
         }
         return false;
     }
 
-    default boolean toolSetExtendedFacing(ExtendedFacing extendedFacing){
-        if(extendedFacing==null){
-            for (int i = 0,j=getExtendedFacing().ordinal()+1, valuesLength = ExtendedFacing.VALUES.length; i < valuesLength; i++) {
-                if(toolSetExtendedFacing(ExtendedFacing.VALUES[j%valuesLength])){
+    default boolean toolSetExtendedFacing(ExtendedFacing extendedFacing) {
+        if (extendedFacing == null) {
+            for (int i = 0, j = getExtendedFacing().ordinal() + 1, valuesLength = ExtendedFacing.VALUES.length;
+                    i < valuesLength;
+                    i++) {
+                if (checkedSetExtendedFacing(ExtendedFacing.VALUES[(j + i) % valuesLength])) {
                     return true;
                 }
             }
             return false;
-        }else {
+        } else {
             return checkedSetExtendedFacing(extendedFacing);
         }
     }
 
-    default boolean checkedSetExtendedFacing(ExtendedFacing alignment){
-        if (isNewExtendedFacingValid(alignment)){
+    default boolean checkedSetExtendedFacing(ExtendedFacing alignment) {
+        if (isNewExtendedFacingValid(alignment)) {
             setExtendedFacing(alignment);
             return true;
         }
@@ -153,31 +162,29 @@ public interface IAlignment extends IAlignmentLimits,IAlignmentProvider {
     }
 
     default boolean isNewDirectionValid(ForgeDirection direction) {
-        return isNewExtendedFacingValid(direction,getRotation(),getFlip());
+        return isNewExtendedFacingValid(direction, getRotation(), getFlip());
     }
 
-    default boolean isNewRotationValid(Rotation rotation){
-        return isNewExtendedFacingValid(getDirection(),rotation,getFlip());
+    default boolean isNewRotationValid(Rotation rotation) {
+        return isNewExtendedFacingValid(getDirection(), rotation, getFlip());
     }
 
-    default boolean isNewFlipValid(Flip flip){
-        return isNewExtendedFacingValid(getDirection(),getRotation(),flip);
+    default boolean isNewFlipValid(Flip flip) {
+        return isNewExtendedFacingValid(getDirection(), getRotation(), flip);
     }
 
     default boolean isExtendedFacingValid() {
-        return isNewExtendedFacingValid(getDirection(),getRotation(),getFlip());
+        return isNewExtendedFacingValid(getDirection(), getRotation(), getFlip());
     }
 
     @Override
-    default boolean isNewExtendedFacingValid(ForgeDirection direction, Rotation rotation, Flip flip){
+    default boolean isNewExtendedFacingValid(ForgeDirection direction, Rotation rotation, Flip flip) {
         return getAlignmentLimits().isNewExtendedFacingValid(direction, rotation, flip);
     }
 
     @Override
-    default boolean isNewExtendedFacingValid(ExtendedFacing alignment){
-        return getAlignmentLimits().isNewExtendedFacingValid(
-                alignment.getDirection(),
-                alignment.getRotation(),
-                alignment.getFlip());
+    default boolean isNewExtendedFacingValid(ExtendedFacing alignment) {
+        return getAlignmentLimits()
+                .isNewExtendedFacingValid(alignment.getDirection(), alignment.getRotation(), alignment.getFlip());
     }
-}
+}

src/main/java/com/gtnewhorizon/structurelib/alignment/IAlignmentLimits.java

@@ -1,14 +1,14 @@
 package com.gtnewhorizon.structurelib.alignment;
+
+import static com.gtnewhorizon.structurelib.alignment.IAlignment.STATES_COUNT;
+
 import com.gtnewhorizon.structurelib.alignment.enumerable.ExtendedFacing;
 import com.gtnewhorizon.structurelib.alignment.enumerable.Flip;
 import com.gtnewhorizon.structurelib.alignment.enumerable.Rotation;
-import net.minecraftforge.common.util.ForgeDirection;
-
 import java.util.Arrays;
 import java.util.Optional;
 import java.util.function.Function;
-
-import static com.gtnewhorizon.structurelib.alignment.IAlignment.STATES_COUNT;
+import net.minecraftforge.common.util.ForgeDirection;
 
 public interface IAlignmentLimits {
 
@@ -17,10 +17,7 @@ public interface IAlignmentLimits {
     boolean isNewExtendedFacingValid(ForgeDirection direction, Rotation rotation, Flip flip);
 
     default boolean isNewExtendedFacingValid(ExtendedFacing alignment) {
-        return isNewExtendedFacingValid(
-                alignment.getDirection(),
-                alignment.getRotation(),
-                alignment.getFlip());
+        return isNewExtendedFacingValid(alignment.getDirection(), alignment.getRotation(), alignment.getFlip());
     }
 
     static IAlignmentLimits allowOnly(ExtendedFacing... allowedFacings) {
@@ -57,12 +54,16 @@ public interface IAlignmentLimits {
         }
 
         public Builder deny(ForgeDirection fd) {
-            ExtendedFacing.getAllWith(fd).stream().mapToInt(ExtendedFacing::getIndex).forEach(v -> validStates[v] = false);
+            ExtendedFacing.getAllWith(fd).stream()
+                    .mapToInt(ExtendedFacing::getIndex)
+                    .forEach(v -> validStates[v] = false);
             return this;
         }
 
         public Builder allow(ForgeDirection fd) {
-            ExtendedFacing.getAllWith(fd).stream().mapToInt(ExtendedFacing::getIndex).forEach(v -> validStates[v] = true);
+            ExtendedFacing.getAllWith(fd).stream()
+                    .mapToInt(ExtendedFacing::getIndex)
+                    .forEach(v -> validStates[v] = true);
             return this;
         }
 
@@ -77,22 +78,30 @@ public interface IAlignmentLimits {
         }
 
         public Builder deny(Rotation fd) {
-            ExtendedFacing.getAllWith(fd).stream().mapToInt(ExtendedFacing::getIndex).forEach(v -> validStates[v] = false);
+            ExtendedFacing.getAllWith(fd).stream()
+                    .mapToInt(ExtendedFacing::getIndex)
+                    .forEach(v -> validStates[v] = false);
             return this;
         }
 
         public Builder allow(Rotation fd) {
-            ExtendedFacing.getAllWith(fd).stream().mapToInt(ExtendedFacing::getIndex).forEach(v -> validStates[v] = true);
+            ExtendedFacing.getAllWith(fd).stream()
+                    .mapToInt(ExtendedFacing::getIndex)
+                    .forEach(v -> validStates[v] = true);
             return this;
         }
 
         public Builder deny(Flip fd) {
-            ExtendedFacing.getAllWith(fd).stream().mapToInt(ExtendedFacing::getIndex).forEach(v -> validStates[v] = false);
+            ExtendedFacing.getAllWith(fd).stream()
+                    .mapToInt(ExtendedFacing::getIndex)
+                    .forEach(v -> validStates[v] = false);
             return this;
         }
 
         public Builder allow(Flip fd) {
-            ExtendedFacing.getAllWith(fd).stream().mapToInt(ExtendedFacing::getIndex).forEach(v -> validStates[v] = true);
+            ExtendedFacing.getAllWith(fd).stream()
+                    .mapToInt(ExtendedFacing::getIndex)
+                    .forEach(v -> validStates[v] = true);
             return this;
         }
 

src/main/java/com/gtnewhorizon/structurelib/alignment/IAlignmentProvider.java

@@ -5,4 +5,4 @@ import javax.annotation.Nullable;
 public interface IAlignmentProvider {
     @Nullable
     IAlignment getAlignment();
-}
+}

src/main/java/com/gtnewhorizon/structurelib/alignment/IntegerAxisSwap.java

@@ -1,12 +1,12 @@
 package com.gtnewhorizon.structurelib.alignment;
 
-import com.gtnewhorizon.structurelib.util.Vec3Impl;
+import static java.lang.Math.abs;
+
 import com.gtnewhorizon.structurelib.alignment.enumerable.Direction;
+import com.gtnewhorizon.structurelib.util.Vec3Impl;
 import net.minecraft.util.Vec3;
 import net.minecraftforge.common.util.ForgeDirection;
 
-import static java.lang.Math.abs;
-
 public class IntegerAxisSwap {
     private final Vec3Impl forFirstAxis;
     private final Vec3Impl forSecondAxis;
@@ -16,69 +16,89 @@ public class IntegerAxisSwap {
         this.forFirstAxis = Direction.getAxisVector(forFirstAxis);
         this.forSecondAxis = Direction.getAxisVector(forSecondAxis);
         this.forThirdAxis = Direction.getAxisVector(forThirdAxis);
-        if(abs(this.forFirstAxis.get0())+abs(this.forSecondAxis.get0())+abs(this.forThirdAxis.get0())!=1 ||
-                abs(this.forFirstAxis.get1())+abs(this.forSecondAxis.get1())+abs(this.forThirdAxis.get1())!=1 ||
-                abs(this.forFirstAxis.get2())+abs(this.forSecondAxis.get2())+abs(this.forThirdAxis.get2())!=1){
-            throw new IllegalArgumentException("Axis are overlapping/missing! "+
-                    forFirstAxis.name()+" "+
-                    forSecondAxis.name()+" "+
-                    forThirdAxis.name());
+        if (abs(this.forFirstAxis.get0()) + abs(this.forSecondAxis.get0()) + abs(this.forThirdAxis.get0()) != 1
+                || abs(this.forFirstAxis.get1()) + abs(this.forSecondAxis.get1()) + abs(this.forThirdAxis.get1()) != 1
+                || abs(this.forFirstAxis.get2()) + abs(this.forSecondAxis.get2()) + abs(this.forThirdAxis.get2())
+                        != 1) {
+            throw new IllegalArgumentException("Axis are overlapping/missing! " + forFirstAxis.name()
+                    + " " + forSecondAxis.name()
+                    + " " + forThirdAxis.name());
         }
     }
 
-    public Vec3Impl translate(Vec3Impl point){
+    public Vec3Impl translate(Vec3Impl point) {
         return new Vec3Impl(
-                forFirstAxis.get0()*point.get0() +forFirstAxis.get1()*point.get1() +forFirstAxis.get2()*point.get2(),
-                forSecondAxis.get0()*point.get0()+forSecondAxis.get1()*point.get1()+forSecondAxis.get2()*point.get2(),
-                forThirdAxis.get0()*point.get0() +forThirdAxis.get1()*point.get1() +forThirdAxis.get2()*point.get2()
-        );
+                forFirstAxis.get0() * point.get0()
+                        + forFirstAxis.get1() * point.get1()
+                        + forFirstAxis.get2() * point.get2(),
+                forSecondAxis.get0() * point.get0()
+                        + forSecondAxis.get1() * point.get1()
+                        + forSecondAxis.get2() * point.get2(),
+                forThirdAxis.get0() * point.get0()
+                        + forThirdAxis.get1() * point.get1()
+                        + forThirdAxis.get2() * point.get2());
     }
 
-    public Vec3Impl inverseTranslate(Vec3Impl point){
+    public Vec3Impl inverseTranslate(Vec3Impl point) {
         return new Vec3Impl(
-                forFirstAxis.get0()*point.get0()+forSecondAxis.get0()*point.get1()+forThirdAxis.get0()*point.get2(),
-                forFirstAxis.get1()*point.get0()+forSecondAxis.get1()*point.get1()+forThirdAxis.get1()*point.get2(),
-                forFirstAxis.get2()*point.get0()+forSecondAxis.get2()*point.get1()+forThirdAxis.get2()*point.get2()
-        );
+                forFirstAxis.get0() * point.get0()
+                        + forSecondAxis.get0() * point.get1()
+                        + forThirdAxis.get0() * point.get2(),
+                forFirstAxis.get1() * point.get0()
+                        + forSecondAxis.get1() * point.get1()
+                        + forThirdAxis.get1() * point.get2(),
+                forFirstAxis.get2() * point.get0()
+                        + forSecondAxis.get2() * point.get1()
+                        + forThirdAxis.get2() * point.get2());
     }
 
-    public Vec3 translate(Vec3 point){
+    public Vec3 translate(Vec3 point) {
         return Vec3.createVectorHelper(
-                forFirstAxis.get0()*point.xCoord +forFirstAxis.get1()*point.yCoord +forFirstAxis.get2()*point.zCoord,
-                forSecondAxis.get0()*point.xCoord+forSecondAxis.get1()*point.yCoord+forSecondAxis.get2()*point.zCoord,
-                forThirdAxis.get0()*point.xCoord +forThirdAxis.get1()*point.yCoord +forThirdAxis.get2()*point.zCoord
-        );
+                forFirstAxis.get0() * point.xCoord
+                        + forFirstAxis.get1() * point.yCoord
+                        + forFirstAxis.get2() * point.zCoord,
+                forSecondAxis.get0() * point.xCoord
+                        + forSecondAxis.get1() * point.yCoord
+                        + forSecondAxis.get2() * point.zCoord,
+                forThirdAxis.get0() * point.xCoord
+                        + forThirdAxis.get1() * point.yCoord
+                        + forThirdAxis.get2() * point.zCoord);
     }
 
-    public Vec3 inverseTranslate(Vec3 point){
+    public Vec3 inverseTranslate(Vec3 point) {
         return Vec3.createVectorHelper(
-                forFirstAxis.get0()*point.xCoord+forSecondAxis.get0()*point.yCoord+forThirdAxis.get0()*point.zCoord,
-                forFirstAxis.get1()*point.xCoord+forSecondAxis.get1()*point.yCoord+forThirdAxis.get1()*point.zCoord,
-                forFirstAxis.get2()*point.xCoord+forSecondAxis.get2()*point.yCoord+forThirdAxis.get2()*point.zCoord
-        );
-    }
-    
-    public void translate(int[] point,int[] out){
-        out[0]=forFirstAxis.get0()*point[0] +forFirstAxis.get1()*point[1] +forFirstAxis.get2()*point[2];
-        out[1]=forSecondAxis.get0()*point[0]+forSecondAxis.get1()*point[1]+forSecondAxis.get2()*point[2];
-        out[2]=forThirdAxis.get0()*point[0] +forThirdAxis.get1()*point[1] +forThirdAxis.get2()*point[2];
+                forFirstAxis.get0() * point.xCoord
+                        + forSecondAxis.get0() * point.yCoord
+                        + forThirdAxis.get0() * point.zCoord,
+                forFirstAxis.get1() * point.xCoord
+                        + forSecondAxis.get1() * point.yCoord
+                        + forThirdAxis.get1() * point.zCoord,
+                forFirstAxis.get2() * point.xCoord
+                        + forSecondAxis.get2() * point.yCoord
+                        + forThirdAxis.get2() * point.zCoord);
     }
 
-    public void inverseTranslate(int[] point,int[] out){
-        out[0]=forFirstAxis.get0()*point[0]+forSecondAxis.get0()*point[1]+forThirdAxis.get0()*point[2];
-        out[1]=forFirstAxis.get1()*point[0]+forSecondAxis.get1()*point[1]+forThirdAxis.get1()*point[2];
-        out[2]=forFirstAxis.get2()*point[0]+forSecondAxis.get2()*point[1]+forThirdAxis.get2()*point[2];
+    public void translate(int[] point, int[] out) {
+        out[0] = forFirstAxis.get0() * point[0] + forFirstAxis.get1() * point[1] + forFirstAxis.get2() * point[2];
+        out[1] = forSecondAxis.get0() * point[0] + forSecondAxis.get1() * point[1] + forSecondAxis.get2() * point[2];
+        out[2] = forThirdAxis.get0() * point[0] + forThirdAxis.get1() * point[1] + forThirdAxis.get2() * point[2];
     }
 
-    public void translate(double[] point,double[] out){
-        out[0]=forFirstAxis.get0()*point[0] +forFirstAxis.get1()*point[1] +forFirstAxis.get2()*point[2];
-        out[1]=forSecondAxis.get0()*point[0]+forSecondAxis.get1()*point[1]+forSecondAxis.get2()*point[2];
-        out[2]=forThirdAxis.get0()*point[0] +forThirdAxis.get1()*point[1] +forThirdAxis.get2()*point[2];
+    public void inverseTranslate(int[] point, int[] out) {
+        out[0] = forFirstAxis.get0() * point[0] + forSecondAxis.get0() * point[1] + forThirdAxis.get0() * point[2];
+        out[1] = forFirstAxis.get1() * point[0] + forSecondAxis.get1() * point[1] + forThirdAxis.get1() * point[2];
+        out[2] = forFirstAxis.get2() * point[0] + forSecondAxis.get2() * point[1] + forThirdAxis.get2() * point[2];
     }
 
-    public void inverseTranslate(double[] point,double[] out){
-        out[0]=forFirstAxis.get0()*point[0]+forSecondAxis.get0()*point[1]+forThirdAxis.get0()*point[2];
-        out[1]=forFirstAxis.get1()*point[0]+forSecondAxis.get1()*point[1]+forThirdAxis.get1()*point[2];
-        out[2]=forFirstAxis.get2()*point[0]+forSecondAxis.get2()*point[1]+forThirdAxis.get2()*point[2];
+    public void translate(double[] point, double[] out) {
+        out[0] = forFirstAxis.get0() * point[0] + forFirstAxis.get1() * point[1] + forFirstAxis.get2() * point[2];
+        out[1] = forSecondAxis.get0() * point[0] + forSecondAxis.get1() * point[1] + forSecondAxis.get2() * point[2];
+        out[2] = forThirdAxis.get0() * point[0] + forThirdAxis.get1() * point[1] + forThirdAxis.get2() * point[2];
+    }
+
+    public void inverseTranslate(double[] point, double[] out) {
+        out[0] = forFirstAxis.get0() * point[0] + forSecondAxis.get0() * point[1] + forThirdAxis.get0() * point[2];
+        out[1] = forFirstAxis.get1() * point[0] + forSecondAxis.get1() * point[1] + forThirdAxis.get1() * point[2];
+        out[2] = forFirstAxis.get2() * point[0] + forSecondAxis.get2() * point[1] + forThirdAxis.get2() * point[2];
     }
 }

src/main/java/com/gtnewhorizon/structurelib/alignment/constructable/ConstructableUtility.java

@@ -1,74 +1,110 @@
 package com.gtnewhorizon.structurelib.alignment.constructable;
 
 import com.gtnewhorizon.structurelib.StructureLib;
+import com.gtnewhorizon.structurelib.StructureLibAPI;
 import com.gtnewhorizon.structurelib.alignment.IAlignment;
 import com.gtnewhorizon.structurelib.alignment.enumerable.ExtendedFacing;
+import com.gtnewhorizon.structurelib.structure.IItemSource;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.entity.player.EntityPlayerMP;
 import net.minecraft.item.ItemStack;
+import net.minecraft.nbt.NBTTagCompound;
 import net.minecraft.tileentity.TileEntity;
+import net.minecraft.util.ChatComponentTranslation;
 import net.minecraft.world.World;
 import net.minecraftforge.common.util.FakePlayer;
 import net.minecraftforge.common.util.ForgeDirection;
 
 public class ConstructableUtility {
-    private ConstructableUtility() {
 
+    // TODO make these configurable and expose this to external world
+    public static final int COOLDOWN = 5;
+    private static final int BUDGET = 25;
+    public static boolean redBrokenOne = true; // TODO this is horrible
+
+    private ConstructableUtility() {}
+
+    public static boolean handle(
+            ItemStack aStack, EntityPlayer aPlayer, World aWorld, int aX, int aY, int aZ, int aSide) {
+        StructureLibAPI.startHinting(aWorld);
+        boolean ret = handle0(aStack, aPlayer, aWorld, aX, aY, aZ, aSide);
+        StructureLibAPI.endHinting(aWorld);
+        return ret;
     }
 
-    public static boolean handle(ItemStack aStack, EntityPlayer aPlayer, World aWorld, int aX, int aY, int aZ, int aSide) {
+    private static boolean handle0(
+            ItemStack aStack, EntityPlayer aPlayer, World aWorld, int aX, int aY, int aZ, int aSide) {
         TileEntity tTileEntity = aWorld.getTileEntity(aX, aY, aZ);
         if (tTileEntity == null || aPlayer instanceof FakePlayer) {
             return aPlayer instanceof EntityPlayerMP;
         }
         if (aPlayer instanceof EntityPlayerMP) {
-            //struct gen
-            if (aPlayer.isSneaking() && aPlayer.capabilities.isCreativeMode) {
-                if (tTileEntity instanceof IConstructableProvider) {
-                    IConstructable constructable = ((IConstructableProvider) tTileEntity).getConstructable();
-                    if (constructable != null) {
-                        constructable.construct(aStack, false);
-                    }
-                } else if (tTileEntity instanceof IConstructable) {
-                    ((IConstructable) tTileEntity).construct(aStack, false);
-                } else if (IMultiblockInfoContainer.contains(tTileEntity.getClass())) {
-                    IMultiblockInfoContainer<TileEntity> iMultiblockInfoContainer = IMultiblockInfoContainer.get(tTileEntity.getClass());
-                    if (tTileEntity instanceof IAlignment) {
-                        iMultiblockInfoContainer.construct(aStack, false, tTileEntity,
-                                ((IAlignment) tTileEntity).getExtendedFacing());
-                    } else {
-                        iMultiblockInfoContainer.construct(aStack, false, tTileEntity,
-                                ExtendedFacing.of(ForgeDirection.getOrientation(aSide)));
-                    }
+            // not sneaking - client side will generate hologram. nothing to do on server side
+            if (!aPlayer.isSneaking()) return true;
+
+            long timePast = StructureLib.getOverworldTime() - getLastUseTick(aStack);
+            if (timePast < COOLDOWN) {
+                aPlayer.addChatComponentMessage(new ChatComponentTranslation(
+                        "item.structurelib.constructableTrigger.too_fast", COOLDOWN - timePast));
+                return true;
+            }
+        } else if (!StructureLib.isCurrentPlayer(aPlayer)) {
+            return false;
+        }
+
+        IConstructable constructable = null;
+        if (tTileEntity instanceof IConstructableProvider)
+            constructable = ((IConstructableProvider) tTileEntity).getConstructable();
+        else if (tTileEntity instanceof IConstructable) {
+            constructable = (IConstructable) tTileEntity;
+        } else if (IMultiblockInfoContainer.contains(tTileEntity.getClass())) {
+            ExtendedFacing facing = tTileEntity instanceof IAlignment
+                    ? ((IAlignment) tTileEntity).getExtendedFacing()
+                    : ExtendedFacing.of(ForgeDirection.getOrientation(aSide));
+            constructable = IMultiblockInfoContainer.<TileEntity>get(tTileEntity.getClass())
+                    .toConstructable(tTileEntity, facing);
+        }
+
+        if (constructable == null) return false;
+
+        if (aPlayer instanceof EntityPlayerMP) {
+            EntityPlayerMP playerMP = (EntityPlayerMP) aPlayer;
+            // server side and sneaking (already checked above)
+            // do construct
+            if (aPlayer.capabilities.isCreativeMode) {
+                constructable.construct(aStack, false);
+            } else if (constructable instanceof ISurvivalConstructable) {
+                int built = ((ISurvivalConstructable) constructable)
+                        .survivalConstruct(aStack, BUDGET, IItemSource.fromPlayer(playerMP), playerMP);
+                if (built > 0)
+                    // TODO somehow notify extensions that their inventory might have been modified and need to be
+                    // synced to client or saved
+                    playerMP.inventory.markDirty();
+                else if (built == -1) {
+                    playerMP.addChatMessage(new ChatComponentTranslation("structurelib.autoplace.complete"));
                 }
+                setLastUseTickToStackTag(aStack);
+            } else {
+                playerMP.addChatMessage(new ChatComponentTranslation("structurelib.autoplace.error.not_enabled"));
             }
             return true;
-        } else if (StructureLib.isCurrentPlayer(aPlayer)) {//particles and text client side
-            //if ((!aPlayer.isSneaking() || !aPlayer.capabilities.isCreativeMode)) {
-            if (tTileEntity instanceof IConstructableProvider) {
-                IConstructable constructable = ((IConstructableProvider) tTileEntity).getConstructable();
-                if (constructable != null) {
-                    constructable.construct(aStack, true);
-                    StructureLib.addClientSideChatMessages(constructable.getStructureDescription(aStack));
-                }
-            } else if (tTileEntity instanceof IConstructable) {
-                IConstructable constructable = (IConstructable) tTileEntity;
-                constructable.construct(aStack, true);
-                StructureLib.addClientSideChatMessages(constructable.getStructureDescription(aStack));
-                return false;
-            } else if (IMultiblockInfoContainer.contains(tTileEntity.getClass())) {
-                IMultiblockInfoContainer<TileEntity> iMultiblockInfoContainer = IMultiblockInfoContainer.get(tTileEntity.getClass());
-                if (tTileEntity instanceof IAlignment) {
-                    iMultiblockInfoContainer.construct(aStack, true, tTileEntity,
-                            ((IAlignment) tTileEntity).getExtendedFacing());
-                } else {
-                    iMultiblockInfoContainer.construct(aStack, true, tTileEntity,
-                            ExtendedFacing.of(ForgeDirection.getOrientation(aSide)));
-                }
-                StructureLib.addClientSideChatMessages(IMultiblockInfoContainer.get(tTileEntity.getClass()).getDescription(aStack));
-                return false;
-            }
         }
+        // client side
+        // particles and text
+        constructable.construct(aStack, true);
+        if (getLastUseTick(aStack) == 0)
+            StructureLib.addClientSideChatMessages(constructable.getStructureDescription(aStack));
         return false;
     }
+
+    private static long getLastUseTick(ItemStack aStack) {
+        return aStack.hasTagCompound() ? aStack.getTagCompound().getLong("LastUse") : 0;
+    }
+
+    private static void setLastUseTickToStackTag(ItemStack aStack) {
+        NBTTagCompound tag = aStack.stackTagCompound;
+        if (tag == null) tag = aStack.stackTagCompound = new NBTTagCompound();
+        // here we force use the overworld tick time, in case the current world is over
+        tag.setLong("LastUse", StructureLib.getOverworldTime());
+    }
 }

src/main/java/com/gtnewhorizon/structurelib/alignment/constructable/IConstructable.java

@@ -13,4 +13,3 @@ public interface IConstructable {
     @SideOnly(Side.CLIENT)
     String[] getStructureDescription(ItemStack stackSize);
 }
-

src/main/java/com/gtnewhorizon/structurelib/alignment/constructable/IConstructableProvider.java

@@ -6,9 +6,9 @@ import javax.annotation.Nullable;
  * Implement this interface if this tile entity MIGHT be constructable
  */
 public interface IConstructableProvider {
-	/**
-	 * @return null if not constructable, an instance otherwise.
-	 */
-	@Nullable
-	IConstructable getConstructable();
+    /**
+     * @return null if not constructable, an instance otherwise.
+     */
+    @Nullable
+    IConstructable getConstructable();
 }

src/main/java/com/gtnewhorizon/structurelib/alignment/constructable/IMultiblockInfoContainer.java

@@ -1,12 +1,14 @@
 package com.gtnewhorizon.structurelib.alignment.constructable;
 
 import com.gtnewhorizon.structurelib.alignment.enumerable.ExtendedFacing;
+import com.gtnewhorizon.structurelib.structure.IItemSource;
 import cpw.mods.fml.relauncher.Side;
 import cpw.mods.fml.relauncher.SideOnly;
+import java.util.HashMap;
+import net.minecraft.entity.player.EntityPlayerMP;
 import net.minecraft.item.ItemStack;
 import net.minecraft.tileentity.TileEntity;
-
-import java.util.HashMap;
+import net.minecraft.world.World;
 
 /**
  * To implement IConstructable on not own TileEntities
@@ -14,6 +16,10 @@ import java.util.HashMap;
 public interface IMultiblockInfoContainer<T> {
     HashMap<String, IMultiblockInfoContainer<?>> MULTIBLOCK_MAP = new HashMap<>();
 
+    /**
+     * There is no specific loading phase restriction, but you should generally not call it before the tile entity is
+     * properly registered.
+     */
     static <T extends TileEntity> void registerTileClass(Class<T> clazz, IMultiblockInfoContainer<?> info) {
         MULTIBLOCK_MAP.put(clazz.getCanonicalName(), info);
     }
@@ -29,6 +35,59 @@ public interface IMultiblockInfoContainer<T> {
 
     void construct(ItemStack stackSize, boolean hintsOnly, T tileEntity, ExtendedFacing aSide);
 
+    /**
+     * Construct the structure using {@link com.gtnewhorizon.structurelib.structure.IStructureElement#survivalPlaceBlock(Object, World, int, int, int, ItemStack, IItemSource, EntityPlayerMP, java.util.function.Consumer)}
+     * @return -1 if done, a helping pointer
+     */
+    default int survivalConstruct(
+            ItemStack stackSize,
+            int elementBudge,
+            IItemSource source,
+            EntityPlayerMP actorProfile,
+            T tileEntity,
+            ExtendedFacing aSide) {
+        return -1;
+    }
+
     @SideOnly(Side.CLIENT)
     String[] getDescription(ItemStack stackSize);
+
+    /**
+     * Override this and return {@link #toConstructable(IMultiblockInfoContainer, Object, ExtendedFacing)} if
+     * {@link #survivalConstruct(ItemStack, int, IItemSource, EntityPlayerMP, Object, ExtendedFacing)} isn't a stub
+     */
+    default IConstructable toConstructable(T tileEntity, ExtendedFacing aSide) {
+        return new IConstructable() {
+            @Override
+            public void construct(ItemStack stackSize, boolean hintsOnly) {
+                IMultiblockInfoContainer.this.construct(stackSize, hintsOnly, tileEntity, aSide);
+            }
+
+            @Override
+            public String[] getStructureDescription(ItemStack stackSize) {
+                return IMultiblockInfoContainer.this.getDescription(stackSize);
+            }
+        };
+    }
+
+    static <T> ISurvivalConstructable toConstructable(
+            IMultiblockInfoContainer<T> thiz, T tileEntity, ExtendedFacing aSide) {
+        return new ISurvivalConstructable() {
+            @Override
+            public int survivalConstruct(
+                    ItemStack stackSize, int elementBudget, IItemSource source, EntityPlayerMP actor) {
+                return thiz.survivalConstruct(stackSize, elementBudget, source, actor, tileEntity, aSide);
+            }
+
+            @Override
+            public void construct(ItemStack stackSize, boolean hintsOnly) {
+                thiz.construct(stackSize, hintsOnly, tileEntity, aSide);
+            }
+
+            @Override
+            public String[] getStructureDescription(ItemStack stackSize) {
+                return thiz.getDescription(stackSize);
+            }
+        };
+    }
 }

src/main/java/com/gtnewhorizon/structurelib/alignment/constructable/ISurvivalConstructable.java

@@ -0,0 +1,17 @@
+package com.gtnewhorizon.structurelib.alignment.constructable;
+
+import com.gtnewhorizon.structurelib.structure.IItemSource;
+import net.minecraft.entity.player.EntityPlayerMP;
+import net.minecraft.item.ItemStack;
+import net.minecraft.world.World;
+
+public interface ISurvivalConstructable extends IConstructable {
+    /**
+     * Construct the structure using {@link com.gtnewhorizon.structurelib.structure.IStructureElement#survivalPlaceBlock(Object, World, int, int, int, ItemStack, IItemSource, EntityPlayerMP, java.util.function.Consumer)}
+     *
+     * @param elementBudget The server configured element budget. You can tune this up a bit if the structure is too big, but
+     *                      generally should not be a 4 digits number to not overwhelm the server
+     * @return -1 if done, otherwise number of elements placed this round
+     */
+    int survivalConstruct(ItemStack stackSize, int elementBudget, IItemSource source, EntityPlayerMP actor);
+}

src/main/java/com/gtnewhorizon/structurelib/alignment/enumerable/Direction.java

@@ -13,11 +13,11 @@ public enum Direction {
 
     private final ForgeDirection forgeDirection;
     private final Vec3Impl axisVector;
-    public static final Direction[] VALUES=values();
+    public static final Direction[] VALUES = values();
 
     Direction(ForgeDirection forgeDirection) {
         this.forgeDirection = forgeDirection;
-        axisVector=new Vec3Impl(forgeDirection.offsetX,forgeDirection.offsetY,forgeDirection.offsetZ);
+        axisVector = new Vec3Impl(forgeDirection.offsetX, forgeDirection.offsetY, forgeDirection.offsetZ);
     }
 
     public ForgeDirection getForgeDirection() {
@@ -28,7 +28,7 @@ public enum Direction {
         return axisVector;
     }
 
-    public static Vec3Impl getAxisVector(ForgeDirection forgeDirection){
+    public static Vec3Impl getAxisVector(ForgeDirection forgeDirection) {
         return VALUES[forgeDirection.ordinal()].axisVector;
     }
 }

src/main/java/com/gtnewhorizon/structurelib/alignment/enumerable/ExtendedFacing.java

@@ -1,20 +1,20 @@
 package com.gtnewhorizon.structurelib.alignment.enumerable;
 
-import com.google.common.collect.ImmutableSet;
-import com.gtnewhorizon.structurelib.alignment.IAlignment;
-import com.gtnewhorizon.structurelib.alignment.IntegerAxisSwap;
-import com.gtnewhorizon.structurelib.util.Vec3Impl;
-import net.minecraft.util.Vec3;
-import net.minecraftforge.common.util.ForgeDirection;
-
-import java.util.*;
-
 import static com.gtnewhorizon.structurelib.alignment.IAlignment.FLIPS_COUNT;
 import static com.gtnewhorizon.structurelib.alignment.IAlignment.ROTATIONS_COUNT;
 import static java.lang.Math.abs;
 import static java.util.Arrays.stream;
 import static java.util.stream.Collectors.*;
 
+import com.google.common.collect.ImmutableSet;
+import com.gtnewhorizon.structurelib.alignment.IAlignment;
+import com.gtnewhorizon.structurelib.alignment.IntegerAxisSwap;
+import com.gtnewhorizon.structurelib.util.Vec3Impl;
+import java.util.*;
+import net.minecraft.util.StatCollector;
+import net.minecraft.util.Vec3;
+import net.minecraftforge.common.util.ForgeDirection;
+
 public enum ExtendedFacing {
     DOWN_NORMAL_NONE("down normal none"),
     DOWN_NORMAL_HORIZONTAL("down normal horizontal"),
@@ -113,25 +113,40 @@ public enum ExtendedFacing {
     EAST_COUNTER_CLOCKWISE_VERTICAL("east counter clockwise vertical"),
     EAST_COUNTER_CLOCKWISE_BOTH("east counter clockwise both");
 
-    public static final ExtendedFacing DEFAULT=NORTH_NORMAL_NONE;
+    public static final ExtendedFacing DEFAULT = NORTH_NORMAL_NONE;
     public static final ExtendedFacing[] VALUES = values();
-    public static final Map<ForgeDirection, List<ExtendedFacing>> FOR_FACING=new HashMap<>();
+    public static final Map<ForgeDirection, List<ExtendedFacing>> FOR_FACING = new HashMap<>();
     public static final int STATES_COUNT = VALUES.length;
+
     static {
-        stream(values()).forEach(extendedFacing ->
-                FOR_FACING.compute(extendedFacing.direction, ((forgeDirection, extendedFacings) -> {
-                    if (extendedFacings == null) {
-                        extendedFacings = new ArrayList<>();
-                    }
-                    extendedFacings.add(extendedFacing);
-                    return extendedFacings;
-                })));
+        stream(values())
+                .forEach(extendedFacing ->
+                        FOR_FACING.compute(extendedFacing.direction, ((forgeDirection, extendedFacings) -> {
+                            if (extendedFacings == null) {
+                                extendedFacings = new ArrayList<>();
+                            }
+                            extendedFacings.add(extendedFacing);
+                            return extendedFacings;
+                        })));
     }
 
-    private static final Map<String, ExtendedFacing> NAME_LOOKUP = stream(VALUES).collect(toMap(ExtendedFacing::getName2, (extendedFacing) -> extendedFacing));
-    private static final EnumMap<ForgeDirection, ImmutableSet<ExtendedFacing>> LOOKUP_BY_DIRECTION = stream(VALUES).collect(groupingBy(ExtendedFacing::getDirection, () -> new EnumMap<>(ForgeDirection.class), collectingAndThen(toSet(), ImmutableSet::copyOf)));
-    private static final EnumMap<Rotation, ImmutableSet<ExtendedFacing>> LOOKUP_BY_ROTATION = stream(VALUES).collect(groupingBy(ExtendedFacing::getRotation, () -> new EnumMap<>(Rotation.class), collectingAndThen(toSet(), ImmutableSet::copyOf)));
-    private static final EnumMap<Flip, ImmutableSet<ExtendedFacing>> LOOKUP_BY_FLIP = stream(VALUES).collect(groupingBy(ExtendedFacing::getFlip, () -> new EnumMap<>(Flip.class), collectingAndThen(toSet(), ImmutableSet::copyOf)));
+    private static final Map<String, ExtendedFacing> NAME_LOOKUP =
+            stream(VALUES).collect(toMap(ExtendedFacing::getName2, (extendedFacing) -> extendedFacing));
+    private static final EnumMap<ForgeDirection, ImmutableSet<ExtendedFacing>> LOOKUP_BY_DIRECTION = stream(VALUES)
+            .collect(groupingBy(
+                    ExtendedFacing::getDirection,
+                    () -> new EnumMap<>(ForgeDirection.class),
+                    collectingAndThen(toSet(), ImmutableSet::copyOf)));
+    private static final EnumMap<Rotation, ImmutableSet<ExtendedFacing>> LOOKUP_BY_ROTATION = stream(VALUES)
+            .collect(groupingBy(
+                    ExtendedFacing::getRotation,
+                    () -> new EnumMap<>(Rotation.class),
+                    collectingAndThen(toSet(), ImmutableSet::copyOf)));
+    private static final EnumMap<Flip, ImmutableSet<ExtendedFacing>> LOOKUP_BY_FLIP = stream(VALUES)
+            .collect(groupingBy(
+                    ExtendedFacing::getFlip,
+                    () -> new EnumMap<>(Flip.class),
+                    collectingAndThen(toSet(), ImmutableSet::copyOf)));
     private final ForgeDirection direction;
     private final ForgeDirection a, b, c;
     private final Rotation rotation;
@@ -142,133 +157,146 @@ public enum ExtendedFacing {
 
     ExtendedFacing(String name) {
         this.name = name;
-        direction= Direction.VALUES[ordinal()/(ROTATIONS_COUNT*FLIPS_COUNT)].getForgeDirection();
-        rotation=Rotation.VALUES[ordinal()/FLIPS_COUNT-direction.ordinal()*ROTATIONS_COUNT];
-        flip=Flip.VALUES[ordinal()%FLIPS_COUNT];
-        ForgeDirection a,b,c;
-        switch (direction){
+        direction = Direction.VALUES[ordinal() / (ROTATIONS_COUNT * FLIPS_COUNT)].getForgeDirection();
+        rotation = Rotation.VALUES[ordinal() / FLIPS_COUNT - direction.ordinal() * ROTATIONS_COUNT];
+        flip = Flip.VALUES[ordinal() % FLIPS_COUNT];
+        ForgeDirection a, b, c;
+        switch (direction) {
             case DOWN:
-                a= ForgeDirection.WEST;
-                b= ForgeDirection.SOUTH;
-                c= ForgeDirection.UP;
+                a = ForgeDirection.WEST;
+                b = ForgeDirection.SOUTH;
+                c = ForgeDirection.UP;
                 break;
             case UP:
-                a= ForgeDirection.EAST;
-                b= ForgeDirection.SOUTH;
-                c= ForgeDirection.DOWN;
+                a = ForgeDirection.EAST;
+                b = ForgeDirection.SOUTH;
+                c = ForgeDirection.DOWN;
                 break;
             case NORTH:
-                a= ForgeDirection.WEST;
-                b= ForgeDirection.DOWN;
-                c= ForgeDirection.SOUTH;
+                a = ForgeDirection.WEST;
+                b = ForgeDirection.DOWN;
+                c = ForgeDirection.SOUTH;
                 break;
             case SOUTH:
-                a= ForgeDirection.EAST;
-                b= ForgeDirection.DOWN;
-                c= ForgeDirection.NORTH;
+                a = ForgeDirection.EAST;
+                b = ForgeDirection.DOWN;
+                c = ForgeDirection.NORTH;
                 break;
             case WEST:
-                a= ForgeDirection.SOUTH;
-                b= ForgeDirection.DOWN;
-                c= ForgeDirection.EAST;
+                a = ForgeDirection.SOUTH;
+                b = ForgeDirection.DOWN;
+                c = ForgeDirection.EAST;
                 break;
             case EAST:
-                a= ForgeDirection.NORTH;
-                b= ForgeDirection.DOWN;
-                c= ForgeDirection.WEST;
+                a = ForgeDirection.NORTH;
+                b = ForgeDirection.DOWN;
+                c = ForgeDirection.WEST;
                 break;
-            default:throw new RuntimeException("Is impossible...");
+            default:
+                throw new RuntimeException("Is impossible...");
         }
-        switch (flip){//This duplicates some axis swaps since flip boolean would do, but seems more convenient to use
+        switch (flip) { // This duplicates some axis swaps since flip boolean would do, but seems more convenient to use
             case HORIZONTAL:
-                a=a.getOpposite();
+                a = a.getOpposite();
                 break;
             case BOTH:
-                a=a.getOpposite();
+                a = a.getOpposite();
             case VERTICAL:
-                b=b.getOpposite();
+                b = b.getOpposite();
                 break;
-            case NONE: break;
-            default:throw new RuntimeException("Even more impossible...");
+            case NONE:
+                break;
+            default:
+                throw new RuntimeException("Even more impossible...");
         }
         switch (rotation) {
             case CLOCKWISE: {
-                ForgeDirection _a=a;
-                a =b;
-                b =_a.getOpposite();
+                ForgeDirection _a = a;
+                a = b;
+                b = _a.getOpposite();
                 break;
             }
             case UPSIDE_DOWN:
-                a=a.getOpposite();
-                b=b.getOpposite();
+                a = a.getOpposite();
+                b = b.getOpposite();
                 break;
             case COUNTER_CLOCKWISE: {
-                ForgeDirection _a=a;
-                a =b.getOpposite();
-                b =_a;
+                ForgeDirection _a = a;
+                a = b.getOpposite();
+                b = _a;
                 break;
             }
-            case NORMAL: break;
+            case NORMAL:
+                break;
             default:
                 throw new RuntimeException("More impossible...");
         }
-        this.a=a;
-        this.b=b;
-        this.c=c;
-        integerAxisSwap =new IntegerAxisSwap(a,b,c);
+        this.a = a;
+        this.b = b;
+        this.c = c;
+        integerAxisSwap = new IntegerAxisSwap(a, b, c);
     }
 
-    public static ExtendedFacing of(ForgeDirection direction, Rotation rotation, Flip flip){
-        if(direction==ForgeDirection.UNKNOWN){
+    public static ExtendedFacing of(ForgeDirection direction, Rotation rotation, Flip flip) {
+        if (direction == ForgeDirection.UNKNOWN) {
             return VALUES[IAlignment.getAlignmentIndex(ForgeDirection.NORTH, rotation, flip)];
         }
         return VALUES[IAlignment.getAlignmentIndex(direction, rotation, flip)];
     }
 
-    public static ExtendedFacing of(ForgeDirection direction){
-        if(direction==ForgeDirection.UNKNOWN){
+    public static ExtendedFacing of(ForgeDirection direction) {
+        if (direction == ForgeDirection.UNKNOWN) {
             return DEFAULT;
         }
         return VALUES[IAlignment.getAlignmentIndex(direction, Rotation.NORMAL, Flip.NONE)];
     }
 
-    public static ImmutableSet<ExtendedFacing> getAllWith(ForgeDirection direction) { return LOOKUP_BY_DIRECTION.get(direction);}
-    public static ImmutableSet<ExtendedFacing> getAllWith(Rotation rotation) { return LOOKUP_BY_ROTATION.get(rotation);}
-    public static ImmutableSet<ExtendedFacing> getAllWith(Flip flip) { return LOOKUP_BY_FLIP.get(flip);}
-
-    public ExtendedFacing with(ForgeDirection direction){
-        return of(direction,rotation,flip);
+    public static ImmutableSet<ExtendedFacing> getAllWith(ForgeDirection direction) {
+        return LOOKUP_BY_DIRECTION.get(direction);
     }
 
-    public ExtendedFacing with(Rotation rotation){
-        return of(direction,rotation,flip);
+    public static ImmutableSet<ExtendedFacing> getAllWith(Rotation rotation) {
+        return LOOKUP_BY_ROTATION.get(rotation);
     }
 
-    public ExtendedFacing with(Flip flip){
-        return of(direction,rotation,flip);
+    public static ImmutableSet<ExtendedFacing> getAllWith(Flip flip) {
+        return LOOKUP_BY_FLIP.get(flip);
+    }
+
+    public ExtendedFacing with(ForgeDirection direction) {
+        return of(direction, rotation, flip);
+    }
+
+    public ExtendedFacing with(Rotation rotation) {
+        return of(direction, rotation, flip);
+    }
+
+    public ExtendedFacing with(Flip flip) {
+        return of(direction, rotation, flip);
     }
 
     public ExtendedFacing getOppositeDirection() {
-        return of(direction.getOpposite(),rotation,flip);
+        return of(direction.getOpposite(), rotation, flip);
     }
 
     public ExtendedFacing getOppositeRotation() {
-        return of(direction,rotation.getOpposite(),flip);
+        return of(direction, rotation.getOpposite(), flip);
     }
 
     public ExtendedFacing getOppositeFlip() {
-        return of(direction,rotation,flip.getOpposite());
+        return of(direction, rotation, flip.getOpposite());
     }
 
     /**
      * Gets the same effective facing achieved by different rot/flip combo
+     *
      * @return same effective facing, but different enum value
      */
-    public ExtendedFacing getDuplicate(){
-        return of(direction,rotation.getOpposite(),flip.getOpposite());
+    public ExtendedFacing getDuplicate() {
+        return of(direction, rotation.getOpposite(), flip.getOpposite());
     }
 
-    public int getIndex(){
+    public int getIndex() {
         return ordinal();
     }
 
@@ -276,6 +304,10 @@ public enum ExtendedFacing {
         return this.name;
     }
 
+    public String getLocalizedName() {
+        return StatCollector.translateToLocal("structurelib.facing." + getIndex());
+    }
+
     public static ExtendedFacing byName(String name) {
         return name == null ? null : NAME_LOOKUP.get(name.toLowerCase(Locale.ROOT));
     }
@@ -302,39 +334,46 @@ public enum ExtendedFacing {
 
     /**
      * Translates relative to front facing offset  to  world offset
+     *
      * @param abcOffset A,B,C offset (facing relative  L-->R,U-->D,F-->B)
-     * @return X,Y,Z offset in world
+     * @return X, Y, Z offset in world
      */
     public Vec3 getWorldOffset(Vec3 abcOffset) {
         return integerAxisSwap.inverseTranslate(abcOffset);
     }
+
     public Vec3Impl getWorldOffset(Vec3Impl abcOffset) {
         return integerAxisSwap.inverseTranslate(abcOffset);
     }
-    public void getWorldOffset(int[] point,int[] out){
-        integerAxisSwap.inverseTranslate(point,out);
-    }
-    public void getWorldOffset(double[] point,double[] out){
-        integerAxisSwap.inverseTranslate(point,out);
+
+    public void getWorldOffset(int[] point, int[] out) {
+        integerAxisSwap.inverseTranslate(point, out);
     }
 
+    public void getWorldOffset(double[] point, double[] out) {
+        integerAxisSwap.inverseTranslate(point, out);
+    }
 
     /**
      * Translates world offset  to  relative front facing offset
+     *
      * @param xyzOffset X,Y,Z offset in world
-     * @return A,B,C offset (facing relative  L-->R,U-->D,F-->B)
+     * @return A, B, C offset (facing relative  L-->R,U-->D,F-->B)
      */
-    public Vec3 getOffsetABC(Vec3 xyzOffset){
+    public Vec3 getOffsetABC(Vec3 xyzOffset) {
         return integerAxisSwap.translate(xyzOffset);
     }
-    public Vec3Impl getOffsetABC(Vec3Impl xyzOffset){
+
+    public Vec3Impl getOffsetABC(Vec3Impl xyzOffset) {
         return integerAxisSwap.translate(xyzOffset);
     }
-    public void getOffsetABC(int[] point,int[] out){
-        integerAxisSwap.translate(point,out);
+
+    public void getOffsetABC(int[] point, int[] out) {
+        integerAxisSwap.translate(point, out);
     }
-    public void getOffsetABC(double[] point,double[] out){
-        integerAxisSwap.translate(point,out);
+
+    public void getOffsetABC(double[] point, double[] out) {
+        integerAxisSwap.translate(point, out);
     }
 
     public IntegerAxisSwap getIntegerAxisSwap() {

src/main/java/com/gtnewhorizon/structurelib/alignment/enumerable/Flip.java

@@ -1,14 +1,14 @@
 package com.gtnewhorizon.structurelib.alignment.enumerable;
 
-import javax.annotation.Nonnull;
-import java.util.Locale;
-import java.util.Map;
-import java.util.Random;
-
 import static java.lang.Math.abs;
 import static java.util.Arrays.stream;
 import static java.util.stream.Collectors.toMap;
 
+import java.util.Locale;
+import java.util.Map;
+import java.util.Random;
+import javax.annotation.Nonnull;
+
 public enum Flip {
     NONE(3, "none"),
     HORIZONTAL(2, "horizontal"),
@@ -26,7 +26,7 @@ public enum Flip {
         this.name = nameIn;
     }
 
-    public int getIndex(){
+    public int getIndex() {
         return ordinal();
     }
 
@@ -58,19 +58,19 @@ public enum Flip {
         return this.name;
     }
 
-    public boolean isNotFlipped(){
-        return this==NONE;
+    public boolean isNotFlipped() {
+        return this == NONE;
     }
 
-    public boolean isBothFlipped(){
-        return this==BOTH;
+    public boolean isBothFlipped() {
+        return this == BOTH;
     }
 
     public boolean isHorizontallyFlipped() {
-        return this==HORIZONTAL || isBothFlipped();
+        return this == HORIZONTAL || isBothFlipped();
     }
 
     public boolean isVerticallyFliped() {
-        return this==VERTICAL || isBothFlipped();
+        return this == VERTICAL || isBothFlipped();
     }
 }

src/main/java/com/gtnewhorizon/structurelib/alignment/enumerable/Rotation.java

@@ -1,14 +1,14 @@
 package com.gtnewhorizon.structurelib.alignment.enumerable;
 
-import javax.annotation.Nonnull;
-import java.util.Locale;
-import java.util.Map;
-import java.util.Random;
-
 import static java.lang.Math.abs;
 import static java.util.Arrays.stream;
 import static java.util.stream.Collectors.toMap;
 
+import java.util.Locale;
+import java.util.Map;
+import java.util.Random;
+import javax.annotation.Nonnull;
+
 public enum Rotation {
     NORMAL(2, "normal"),
     CLOCKWISE(3, "clockwise"),
@@ -19,14 +19,15 @@ public enum Rotation {
     private final String name;
 
     public static final Rotation[] VALUES = values();
-    private static final Map<String, Rotation> NAME_LOOKUP = stream(VALUES).collect(toMap(Rotation::getName2, (rotation) -> rotation));
+    private static final Map<String, Rotation> NAME_LOOKUP =
+            stream(VALUES).collect(toMap(Rotation::getName2, (rotation) -> rotation));
 
     Rotation(int oppositeIn, String nameIn) {
         this.opposite = oppositeIn;
         this.name = nameIn;
     }
 
-    public int getIndex(){
+    public int getIndex() {
         return ordinal();
     }
 
@@ -58,19 +59,19 @@ public enum Rotation {
         return this.name;
     }
 
-    public boolean isNotRotated(){
-        return this==NORMAL;
+    public boolean isNotRotated() {
+        return this == NORMAL;
     }
 
-    public boolean isClockwise(){
-        return this==CLOCKWISE;
+    public boolean isClockwise() {
+        return this == CLOCKWISE;
     }
 
-    public boolean isCounterClockwise(){
-        return this==COUNTER_CLOCKWISE;
+    public boolean isCounterClockwise() {
+        return this == COUNTER_CLOCKWISE;
     }
 
-    public boolean isUpsideDown(){
-        return this==UPSIDE_DOWN;
+    public boolean isUpsideDown() {
+        return this == UPSIDE_DOWN;
     }
 }

src/main/java/com/gtnewhorizon/structurelib/alignment/package-info.java

@@ -0,0 +1,5 @@
+/**
+ * All public stuff in this package and its subpackages are considered part of the public API.
+ * Backwards compatibility is maintained to the maximum extend possible.
+ */
+package com.gtnewhorizon.structurelib.alignment;

src/main/java/com/gtnewhorizon/structurelib/block/BlockHint.java

@@ -1,8 +1,10 @@
 package com.gtnewhorizon.structurelib.block;
 
 import com.gtnewhorizon.structurelib.StructureLib;
+import com.gtnewhorizon.structurelib.StructureLibAPI;
 import cpw.mods.fml.relauncher.Side;
 import cpw.mods.fml.relauncher.SideOnly;
+import java.util.List;
 import net.minecraft.block.Block;
 import net.minecraft.block.material.Material;
 import net.minecraft.client.renderer.texture.IIconRegister;
@@ -12,55 +14,53 @@ import net.minecraft.item.ItemStack;
 import net.minecraft.util.IIcon;
 import net.minecraft.world.IBlockAccess;
 
-import java.util.List;
-
 public class BlockHint extends Block {
-	private static final IIcon[] hint = new IIcon[16];
+    private static final IIcon[] hint = new IIcon[16];
 
-	public BlockHint() {
-		super(Material.iron);
-		setBlockName("structurelib.blockhint");
-		setCreativeTab(StructureLib.creativeTab);
-	}
+    public BlockHint() {
+        super(Material.iron);
+        setBlockName("structurelib.blockhint");
+        setCreativeTab(StructureLib.creativeTab);
+    }
 
-	@Override
-	public void registerBlockIcons(IIconRegister aIconRegister) {
-		//super.registerBlockIcons(aIconRegister);
-		hint[0] = aIconRegister.registerIcon(StructureLib.MOD_ID + ":iconsets/HINT_0");
-		hint[1] = aIconRegister.registerIcon(StructureLib.MOD_ID + ":iconsets/HINT_1");
-		hint[2] = aIconRegister.registerIcon(StructureLib.MOD_ID + ":iconsets/HINT_2");
-		hint[3] = aIconRegister.registerIcon(StructureLib.MOD_ID + ":iconsets/HINT_3");
-		hint[4] = aIconRegister.registerIcon(StructureLib.MOD_ID + ":iconsets/HINT_4");
-		hint[5] = aIconRegister.registerIcon(StructureLib.MOD_ID + ":iconsets/HINT_5");
-		hint[6] = aIconRegister.registerIcon(StructureLib.MOD_ID + ":iconsets/HINT_6");
-		hint[7] = aIconRegister.registerIcon(StructureLib.MOD_ID + ":iconsets/HINT_7");
-		hint[8] = aIconRegister.registerIcon(StructureLib.MOD_ID + ":iconsets/HINT_8");
-		hint[9] = aIconRegister.registerIcon(StructureLib.MOD_ID + ":iconsets/HINT_9");
-		hint[10] = aIconRegister.registerIcon(StructureLib.MOD_ID + ":iconsets/HINT_10");
-		hint[11] = aIconRegister.registerIcon(StructureLib.MOD_ID + ":iconsets/HINT_11");
-		hint[12] = aIconRegister.registerIcon(StructureLib.MOD_ID + ":iconsets/HINT_DEFAULT");
-		hint[13] = aIconRegister.registerIcon(StructureLib.MOD_ID + ":iconsets/HINT_AIR");
-		hint[14] = aIconRegister.registerIcon(StructureLib.MOD_ID + ":iconsets/HINT_NOAIR");
-		hint[15] = aIconRegister.registerIcon(StructureLib.MOD_ID + ":iconsets/HINT_ERROR");
-	}
+    @Override
+    public void registerBlockIcons(IIconRegister aIconRegister) {
+        // super.registerBlockIcons(aIconRegister);
+        hint[0] = aIconRegister.registerIcon(StructureLibAPI.MOD_ID + ":iconsets/HINT_0");
+        hint[1] = aIconRegister.registerIcon(StructureLibAPI.MOD_ID + ":iconsets/HINT_1");
+        hint[2] = aIconRegister.registerIcon(StructureLibAPI.MOD_ID + ":iconsets/HINT_2");
+        hint[3] = aIconRegister.registerIcon(StructureLibAPI.MOD_ID + ":iconsets/HINT_3");
+        hint[4] = aIconRegister.registerIcon(StructureLibAPI.MOD_ID + ":iconsets/HINT_4");
+        hint[5] = aIconRegister.registerIcon(StructureLibAPI.MOD_ID + ":iconsets/HINT_5");
+        hint[6] = aIconRegister.registerIcon(StructureLibAPI.MOD_ID + ":iconsets/HINT_6");
+        hint[7] = aIconRegister.registerIcon(StructureLibAPI.MOD_ID + ":iconsets/HINT_7");
+        hint[8] = aIconRegister.registerIcon(StructureLibAPI.MOD_ID + ":iconsets/HINT_8");
+        hint[9] = aIconRegister.registerIcon(StructureLibAPI.MOD_ID + ":iconsets/HINT_9");
+        hint[10] = aIconRegister.registerIcon(StructureLibAPI.MOD_ID + ":iconsets/HINT_10");
+        hint[11] = aIconRegister.registerIcon(StructureLibAPI.MOD_ID + ":iconsets/HINT_11");
+        hint[12] = aIconRegister.registerIcon(StructureLibAPI.MOD_ID + ":iconsets/HINT_DEFAULT");
+        hint[13] = aIconRegister.registerIcon(StructureLibAPI.MOD_ID + ":iconsets/HINT_AIR");
+        hint[14] = aIconRegister.registerIcon(StructureLibAPI.MOD_ID + ":iconsets/HINT_NOAIR");
+        hint[15] = aIconRegister.registerIcon(StructureLibAPI.MOD_ID + ":iconsets/HINT_ERROR");
+    }
 
-	@Override
-	public IIcon getIcon(int aSide, int aMeta) {
-		return hint[aMeta];
-	}
+    @Override
+    public IIcon getIcon(int aSide, int aMeta) {
+        return hint[aMeta];
+    }
 
-	@Override
-	@SideOnly(Side.CLIENT)
-	public IIcon getIcon(IBlockAccess aWorld, int xCoord, int yCoord, int zCoord, int aSide) {
-		int tMeta = aWorld.getBlockMetadata(xCoord, yCoord, zCoord);
-		return getIcon(aSide, tMeta);
-	}
+    @Override
+    @SideOnly(Side.CLIENT)
+    public IIcon getIcon(IBlockAccess aWorld, int xCoord, int yCoord, int zCoord, int aSide) {
+        int tMeta = aWorld.getBlockMetadata(xCoord, yCoord, zCoord);
+        return getIcon(aSide, tMeta);
+    }
 
-	@Override
-	@SuppressWarnings("unchecked")
-	public void getSubBlocks(Item aItem, CreativeTabs par2CreativeTabs, List aList) {
-		for (int i = 0; i <= 15; i++) {
-			aList.add(new ItemStack(aItem, 1, i));
-		}
-	}
+    @Override
+    @SuppressWarnings("unchecked")
+    public void getSubBlocks(Item aItem, CreativeTabs par2CreativeTabs, List aList) {
+        for (int i = 0; i <= 15; i++) {
+            aList.add(new ItemStack(aItem, 1, i));
+        }
+    }
 }

src/main/java/com/gtnewhorizon/structurelib/entity/fx/EntityFXBlockHint.java

@@ -1,5 +1,6 @@
 package com.gtnewhorizon.structurelib.entity.fx;
 
+import com.gtnewhorizon.structurelib.ClientProxy;
 import com.gtnewhorizon.structurelib.StructureLib;
 import cpw.mods.fml.relauncher.Side;
 import cpw.mods.fml.relauncher.SideOnly;
@@ -12,23 +13,22 @@ import net.minecraft.world.World;
 import org.lwjgl.opengl.GL11;
 
 @SideOnly(Side.CLIENT)
-public class BlockHint extends EntityFX {
+public class EntityFXBlockHint extends EntityFX {
     private IIcon[] icons;
-    private short[] mRGBa = {255,255,255,0};
+    private short[] mRGBa = {255, 255, 255, 0};
 
-    public BlockHint(World world){
-        this(world,0,0,0, Blocks.stone,0);
+    public EntityFXBlockHint(World world) {
+        this(world, 0, 0, 0, Blocks.stone, 0);
     }
 
     /**
-     *
      * @param world
      * @param x
      * @param y
      * @param z
      * @param icons DOWN, UP, NORTH, SOUTH, WEST, EAST
      */
-    public BlockHint(World world, int x, int y, int z, IIcon[] icons) {
+    public EntityFXBlockHint(World world, int x, int y, int z, IIcon[] icons) {
         super(world, x + .25, y + .5, z + .25);
         particleGravity = 0;
         prevPosX = posX;
@@ -36,11 +36,11 @@ public class BlockHint extends EntityFX {
         prevPosZ = posZ;
         noClip = true;
         particleMaxAge = 2000 + StructureLib.RANDOM.nextInt(200);
-        this.icons=icons;
+        this.icons = icons;
     }
 
-    public BlockHint(World world, int x, int y, int z, Block block, int meta) {
-        super(world, x+.25, y+.5, z+.25);
+    public EntityFXBlockHint(World world, int x, int y, int z, Block block, int meta) {
+        super(world, x + .25, y + .5, z + .25);
         particleGravity = 0;
         prevPosX = posX;
         prevPosY = posY;
@@ -53,13 +53,20 @@ public class BlockHint extends EntityFX {
         }
     }
 
-    public BlockHint withColorTint(short[] coloure){
-        this.mRGBa =coloure;
+    public EntityFXBlockHint withColorTint(short[] coloure) {
+        this.mRGBa = coloure;
         return this;
     }
 
     @Override
-    public void renderParticle(Tessellator tes, float subTickTime, float p_70539_3_, float p_70539_4_, float p_70539_5_, float p_70539_6_, float p_70539_7_) {
+    public void renderParticle(
+            Tessellator tes,
+            float subTickTime,
+            float p_70539_3_,
+            float p_70539_4_,
+            float p_70539_5_,
+            float p_70539_6_,
+            float p_70539_7_) {
         float size = .5f;
         float X = (float) (prevPosX + (posX - prevPosX) * (double) subTickTime - EntityFX.interpPosX);
         float Y = (float) (prevPosY + (posY - prevPosY) * (double) subTickTime - EntityFX.interpPosY) - size / 2;
@@ -68,17 +75,17 @@ public class BlockHint extends EntityFX {
         GL11.glDepthMask(false);
         tes.setColorRGBA((int) (mRGBa[0] * .9F), (int) (mRGBa[1] * .95F), (int) (mRGBa[2] * 1F), 192);
 
-        //var8, var9 - X U
-        //var 10, var 11 - Y V
-        for(int i=0;i<6;i++){
-            if(icons[i]==null) {
+        // var8, var9 - X U
+        // var 10, var 11 - Y V
+        for (int i = 0; i < 6; i++) {
+            if (icons[i] == null) {
                 continue;
             }
-            double u=icons[i].getMinU();
-            double U=icons[i].getMaxU();
-            double v=icons[i].getMinV();
-            double V=icons[i].getMaxV();
-            switch (i){//{DOWN, UP, NORTH, SOUTH, WEST, EAST}
+            double u = icons[i].getMinU();
+            double U = icons[i].getMaxU();
+            double v = icons[i].getMinV();
+            double V = icons[i].getMaxV();
+            switch (i) { // {DOWN, UP, NORTH, SOUTH, WEST, EAST}
                 case 0:
                     tes.addVertexWithUV(X, Y, Z + size, u, V);
                     tes.addVertexWithUV(X, Y, Z, u, v);
@@ -128,6 +135,12 @@ public class BlockHint extends EntityFX {
 
     @Override
     public boolean shouldRenderInPass(int pass) {
-        return pass==2;
+        return pass == 2;
+    }
+
+    @Override
+    public void setDead() {
+        super.setDead();
+        ClientProxy.onHintDead(this);
     }
 }

src/main/java/com/gtnewhorizon/structurelib/entity/fx/WeightlessParticleFX.java

@@ -6,36 +6,39 @@ import net.minecraft.client.particle.EntityFX;
 import net.minecraft.world.World;
 
 @SideOnly(Side.CLIENT)
-public class WeightlessParticleFX extends EntityFX
-{
-    public WeightlessParticleFX(World p_i1205_1_, double p_i1205_2_, double p_i1205_4_, double p_i1205_6_, double p_i1205_8_, double p_i1205_10_, double p_i1205_12_)
-    {
+public class WeightlessParticleFX extends EntityFX {
+    public WeightlessParticleFX(
+            World p_i1205_1_,
+            double p_i1205_2_,
+            double p_i1205_4_,
+            double p_i1205_6_,
+            double p_i1205_8_,
+            double p_i1205_10_,
+            double p_i1205_12_) {
         super(p_i1205_1_, p_i1205_2_, p_i1205_4_, p_i1205_6_, p_i1205_8_, p_i1205_10_, p_i1205_12_);
-        this.motionX = p_i1205_8_ + (double)((float)(Math.random() * 2.0D - 1.0D) * 0.05F);
-        this.motionY = p_i1205_10_ + (double)((float)(Math.random() * 2.0D - 1.0D) * 0.05F);
-        this.motionZ = p_i1205_12_ + (double)((float)(Math.random() * 2.0D - 1.0D) * 0.05F);
+        this.motionX = p_i1205_8_ + (double) ((float) (Math.random() * 2.0D - 1.0D) * 0.05F);
+        this.motionY = p_i1205_10_ + (double) ((float) (Math.random() * 2.0D - 1.0D) * 0.05F);
+        this.motionZ = p_i1205_12_ + (double) ((float) (Math.random() * 2.0D - 1.0D) * 0.05F);
         this.particleRed = this.particleGreen = this.particleBlue = this.rand.nextFloat() * 0.3F + 0.7F;
         this.particleScale = this.rand.nextFloat() * this.rand.nextFloat() * 6.0F + 1.0F;
-        this.particleMaxAge = (int)(16.0D / ((double)this.rand.nextFloat() * 0.8D + 0.2D)) + 2;
-        this.noClip=true;
+        this.particleMaxAge = (int) (16.0D / ((double) this.rand.nextFloat() * 0.8D + 0.2D)) + 2;
+        this.noClip = true;
     }
 
     /**
      * Called to update the entity's position/logic.
      */
-    public void onUpdate()
-    {
+    public void onUpdate() {
         this.prevPosX = this.posX;
         this.prevPosY = this.posY;
         this.prevPosZ = this.posZ;
 
-        if (this.particleAge++ >= this.particleMaxAge)
-        {
+        if (this.particleAge++ >= this.particleMaxAge) {
             this.setDead();
         }
 
         this.setParticleTextureIndex(7 - this.particleAge * 8 / this.particleMaxAge);
-        //this.motionY += 0.004D;
+        // this.motionY += 0.004D;
         this.moveEntity(this.motionX, this.motionY, this.motionZ);
         this.motionX *= 0.8999999761581421D;
         this.motionY *= 0.8999999761581421D;

src/main/java/com/gtnewhorizon/structurelib/item/ItemBlockHint.java

@@ -1,5 +1,8 @@
 package com.gtnewhorizon.structurelib.item;
 
+import static net.minecraft.util.StatCollector.translateToLocal;
+
+import java.util.List;
 import net.minecraft.block.Block;
 import net.minecraft.creativetab.CreativeTabs;
 import net.minecraft.entity.player.EntityPlayer;
@@ -7,60 +10,66 @@ import net.minecraft.item.ItemBlock;
 import net.minecraft.item.ItemStack;
 import net.minecraft.util.EnumChatFormatting;
 
-import java.util.List;
-
-import static net.minecraft.util.StatCollector.translateToLocal;
-
 public class ItemBlockHint extends ItemBlock {
-	public ItemBlockHint(Block p_i45328_1_) {
-		super(p_i45328_1_);
-		setMaxDamage(0);
-		setHasSubtypes(true);
-		setCreativeTab(CreativeTabs.tabBlock);
-	}
+    public ItemBlockHint(Block p_i45328_1_) {
+        super(p_i45328_1_);
+        setMaxDamage(0);
+        setHasSubtypes(true);
+        setCreativeTab(CreativeTabs.tabBlock);
+    }
 
-	@Override
-	@SuppressWarnings("unchecked")
-	public void addInformation(ItemStack aStack, EntityPlayer aPlayer, List aList, boolean aF3_H) {
-		aList.add(translateToLocal("structurelib.blockhint.desc.0"));//Helps while building
-		switch (aStack.getItemDamage()) {
-			case 0:
-			case 1:
-			case 2:
-			case 3:
-			case 4:
-			case 5:
-			case 6:
-			case 7:
-			case 8:
-			case 9:
-			case 10:
-			case 11:
-				aList.add(EnumChatFormatting.AQUA.toString() + EnumChatFormatting.BOLD + translateToLocal("structurelib.blockhint.desc.1"));//Placeholder for a certain group.
-				break;
-			case 12:
-				aList.add(EnumChatFormatting.AQUA.toString() + EnumChatFormatting.BOLD + translateToLocal("structurelib.blockhint.desc.2"));//General placeholder.
-				break;
-			case 13:
-				aList.add(EnumChatFormatting.AQUA.toString() + EnumChatFormatting.BOLD + translateToLocal("structurelib.blockhint.desc.3"));//Make sure it contains Air material.
-				break;
-			case 14:
-				aList.add(EnumChatFormatting.AQUA.toString() + EnumChatFormatting.BOLD + translateToLocal("structurelib.blockhint.desc.4"));//Make sure it does not contain Air material.
-				break;
-			case 15:
-				aList.add(EnumChatFormatting.BLUE.toString() + translateToLocal("structurelib.blockhint.desc.5"));//ERROR, what did u expect?
-				break;
-			default://WTF?
-				aList.add("Damn son where did you get that!?");
-				aList.add(EnumChatFormatting.BLUE.toString() + "From outer space... I guess...");
-		}
-	}
+    @Override
+    @SuppressWarnings("unchecked")
+    public void addInformation(ItemStack aStack, EntityPlayer aPlayer, List aList, boolean aF3_H) {
+        aList.add(translateToLocal("structurelib.blockhint.desc.0")); // Helps while building
+        switch (aStack.getItemDamage()) {
+            case 0:
+            case 1:
+            case 2:
+            case 3:
+            case 4:
+            case 5:
+            case 6:
+            case 7:
+            case 8:
+            case 9:
+            case 10:
+            case 11:
+                aList.add(EnumChatFormatting.AQUA.toString()
+                        + EnumChatFormatting.BOLD
+                        + translateToLocal("structurelib.blockhint.desc.1")); // Placeholder for a certain group.
+                break;
+            case 12:
+                aList.add(EnumChatFormatting.AQUA.toString()
+                        + EnumChatFormatting.BOLD
+                        + translateToLocal("structurelib.blockhint.desc.2")); // General placeholder.
+                break;
+            case 13:
+                aList.add(EnumChatFormatting.AQUA.toString()
+                        + EnumChatFormatting.BOLD
+                        + translateToLocal("structurelib.blockhint.desc.3")); // Make sure it contains Air material.
+                break;
+            case 14:
+                aList.add(EnumChatFormatting.AQUA.toString()
+                        + EnumChatFormatting.BOLD
+                        + translateToLocal(
+                                "structurelib.blockhint.desc.4")); // Make sure it does not contain Air material.
+                break;
+            case 15:
+                aList.add(EnumChatFormatting.BLUE.toString()
+                        + translateToLocal("structurelib.blockhint.desc.5")); // ERROR, what did u expect?
+                break;
+            default: // WTF?
+                aList.add("Damn son where did you get that!?");
+                aList.add(EnumChatFormatting.BLUE.toString() + "From outer space... I guess...");
+        }
+    }
 
-	public int getMetadata(int aMeta) {
-		return aMeta;
-	}
+    public int getMetadata(int aMeta) {
+        return aMeta;
+    }
 
-	public String getUnlocalizedName(ItemStack aStack) {
-		return this.field_150939_a.getUnlocalizedName() + "." + getDamage(aStack);
-	}
+    public String getUnlocalizedName(ItemStack aStack) {
+        return this.field_150939_a.getUnlocalizedName() + "." + getDamage(aStack);
+    }
 }

src/main/java/com/gtnewhorizon/structurelib/item/ItemConstructableTrigger.java

@@ -0,0 +1,72 @@
+package com.gtnewhorizon.structurelib.item;
+
+import static com.gtnewhorizon.structurelib.StructureLibAPI.MOD_ID;
+import static net.minecraft.util.EnumChatFormatting.BLUE;
+import static net.minecraft.util.StatCollector.translateToLocal;
+
+import com.gtnewhorizon.structurelib.StructureLib;
+import com.gtnewhorizon.structurelib.alignment.constructable.ConstructableUtility;
+import java.util.List;
+import net.minecraft.entity.Entity;
+import net.minecraft.entity.player.EntityPlayer;
+import net.minecraft.item.Item;
+import net.minecraft.item.ItemStack;
+import net.minecraft.nbt.NBTTagCompound;
+import net.minecraft.world.World;
+
+public class ItemConstructableTrigger extends Item {
+    public ItemConstructableTrigger() {
+        setUnlocalizedName("structurelib.constructableTrigger");
+        setTextureName(MOD_ID + ":itemConstructableTrigger");
+        setCreativeTab(StructureLib.creativeTab);
+    }
+
+    @Override
+    public boolean onItemUseFirst(
+            ItemStack stack,
+            EntityPlayer player,
+            World world,
+            int x,
+            int y,
+            int z,
+            int side,
+            float hitX,
+            float hitY,
+            float hitZ) {
+        return ConstructableUtility.handle(stack, player, world, x, y, z, side);
+    }
+
+    @SuppressWarnings("unchecked")
+    @Override
+    public void addInformation(ItemStack aStack, EntityPlayer ep, List aList, boolean boo) {
+        aList.add(
+                translateToLocal("item.structurelib.constructableTrigger.desc.0")); // Triggers Constructable Interface
+        aList.add(BLUE
+                + translateToLocal(
+                        "item.structurelib.constructableTrigger.desc.1")); // Shows multiblock construction details,
+        aList.add(BLUE
+                + translateToLocal(
+                        "item.structurelib.constructableTrigger.desc.2")); // just Use on a multiblock controller.
+        aList.add(BLUE
+                + translateToLocal(
+                        "item.structurelib.constructableTrigger.desc.3")); // (Sneak Use in creative to build)
+        aList.add(BLUE
+                + translateToLocal("item.structurelib.constructableTrigger.desc.4")); // Quantity affects tier/mode/type
+    }
+
+    @Override
+    public void onUpdate(
+            ItemStack p_77663_1_, World p_77663_2_, Entity p_77663_3_, int p_77663_4_, boolean p_77663_5_) {
+        // remove LastUse tags if it times out,
+        // so it can stack with other trigger item stacks
+        // don't remove it too soon though, to prevent chat spam
+        // this might be perceived as a hack, but ok this is simple enough to implement
+        if (p_77663_1_.hasTagCompound()
+                && p_77663_1_.getTagCompound().getLong("LastUse") + ConstructableUtility.COOLDOWN * 2
+                        < StructureLib.getOverworldTime()) {
+            NBTTagCompound tag = p_77663_1_.getTagCompound();
+            tag.removeTag("LastUse");
+            if (tag.hasNoTags()) p_77663_1_.setTagCompound(null);
+        }
+    }
+}

src/main/java/com/gtnewhorizon/structurelib/item/ItemFrontRotationTool.java

@@ -1,38 +1,49 @@
 package com.gtnewhorizon.structurelib.item;
 
+import static com.gtnewhorizon.structurelib.StructureLibAPI.MOD_ID;
+import static net.minecraft.util.StatCollector.translateToLocal;
+
 import com.gtnewhorizon.structurelib.StructureLib;
 import com.gtnewhorizon.structurelib.alignment.AlignmentUtility;
 import cpw.mods.fml.relauncher.Side;
 import cpw.mods.fml.relauncher.SideOnly;
+import java.util.List;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.item.Item;
 import net.minecraft.item.ItemStack;
 import net.minecraft.util.EnumChatFormatting;
 import net.minecraft.world.World;
 
-import java.util.List;
-
-import static com.gtnewhorizon.structurelib.StructureLib.MOD_ID;
-import static net.minecraft.util.StatCollector.translateToLocal;
-
 public class ItemFrontRotationTool extends Item {
-	public ItemFrontRotationTool() {
-		setMaxStackSize(1);
-		setUnlocalizedName("structurelib.frontRotationTool");
-		setTextureName(MOD_ID + ":itemFrontRotationTool");
-		setCreativeTab(StructureLib.creativeTab);
-	}
+    public ItemFrontRotationTool() {
+        setMaxStackSize(1);
+        setUnlocalizedName("structurelib.frontRotationTool");
+        setTextureName(MOD_ID + ":itemFrontRotationTool");
+        setCreativeTab(StructureLib.creativeTab);
+    }
 
-	@Override
-	public boolean onItemUseFirst(ItemStack stack, EntityPlayer player, World world, int x, int y, int z, int side, float hitX, float hitY, float hitZ) {
-		return AlignmentUtility.handle(player, world, x, y, z);
-	}
+    @Override
+    public boolean onItemUseFirst(
+            ItemStack stack,
+            EntityPlayer player,
+            World world,
+            int x,
+            int y,
+            int z,
+            int side,
+            float hitX,
+            float hitY,
+            float hitZ) {
+        return AlignmentUtility.handle(player, world, x, y, z);
+    }
 
-	@Override
-	@SideOnly(Side.CLIENT)
-	public void addInformation(ItemStack p_77624_1_, EntityPlayer p_77624_2_, List aList, boolean p_77624_4_) {
-		aList.add(translateToLocal("item.structurelib.frontRotationTool.desc.0"));//Triggers Front Rotation Interface
-		aList.add(EnumChatFormatting.BLUE + translateToLocal("item.structurelib.frontRotationTool.desc.1"));//Rotates only the front panel,
-		aList.add(EnumChatFormatting.BLUE + translateToLocal("item.structurelib.frontRotationTool.desc.2"));//which allows structure rotation.
-	}
+    @Override
+    @SideOnly(Side.CLIENT)
+    public void addInformation(ItemStack p_77624_1_, EntityPlayer p_77624_2_, List aList, boolean p_77624_4_) {
+        aList.add(translateToLocal("item.structurelib.frontRotationTool.desc.0")); // Triggers Front Rotation Interface
+        aList.add(EnumChatFormatting.BLUE
+                + translateToLocal("item.structurelib.frontRotationTool.desc.1")); // Rotates only the front panel,
+        aList.add(EnumChatFormatting.BLUE
+                + translateToLocal("item.structurelib.frontRotationTool.desc.2")); // which allows structure rotation.
+    }
 }

src/main/java/com/gtnewhorizon/structurelib/net/AlignmentMessage.java

@@ -1,6 +1,8 @@
-package com.gtnewhorizon.structurelib.alignment;
+package com.gtnewhorizon.structurelib.net;
 
 import com.gtnewhorizon.structurelib.StructureLib;
+import com.gtnewhorizon.structurelib.alignment.IAlignment;
+import com.gtnewhorizon.structurelib.alignment.IAlignmentProvider;
 import com.gtnewhorizon.structurelib.alignment.enumerable.ExtendedFacing;
 import cpw.mods.fml.common.network.ByteBufUtils;
 import cpw.mods.fml.common.network.simpleimpl.IMessage;
@@ -19,8 +21,7 @@ public abstract class AlignmentMessage implements IMessage {
     int mPosD;
     int mAlign;
 
-    public AlignmentMessage() {
-    }
+    public AlignmentMessage() {}
 
     @Override
     public void fromBytes(ByteBuf pBuffer) {
@@ -45,11 +46,9 @@ public abstract class AlignmentMessage implements IMessage {
     }
 
     private AlignmentMessage(IAlignmentProvider provider) {
-        if (!(provider instanceof TileEntity))
-            throw new IllegalArgumentException("Provider must be a TileEntity");
+        if (!(provider instanceof TileEntity)) throw new IllegalArgumentException("Provider must be a TileEntity");
         IAlignment alignment = provider.getAlignment();
-        if (alignment == null)
-            throw new IllegalArgumentException("Passed in provider does not provide an alignment!");
+        if (alignment == null) throw new IllegalArgumentException("Passed in provider does not provide an alignment!");
         TileEntity base = (TileEntity) provider;
         mPosX = base.xCoord;
         mPosY = base.yCoord;
@@ -67,8 +66,7 @@ public abstract class AlignmentMessage implements IMessage {
     }
 
     public static class AlignmentQuery extends AlignmentMessage {
-        public AlignmentQuery() {
-        }
+        public AlignmentQuery() {}
 
         public AlignmentQuery(IAlignmentProvider provider) {
             super(provider);
@@ -80,8 +78,7 @@ public abstract class AlignmentMessage implements IMessage {
     }
 
     public static class AlignmentData extends AlignmentMessage {
-        public AlignmentData() {
-        }
+        public AlignmentData() {}
 
         private AlignmentData(AlignmentQuery query) {
             mPosX = query.mPosX;
@@ -104,7 +101,9 @@ public abstract class AlignmentMessage implements IMessage {
         @Override
         public IMessage onMessage(AlignmentData pMessage, MessageContext pCtx) {
             if (StructureLib.getCurrentPlayer().worldObj.provider.dimensionId == pMessage.mPosD) {
-                TileEntity te = StructureLib.getCurrentPlayer().worldObj.getTileEntity(pMessage.mPosX, pMessage.mPosY, pMessage.mPosZ);
+                TileEntity te = StructureLib.getCurrentPlayer()
+                        .worldObj
+                        .getTileEntity(pMessage.mPosX, pMessage.mPosY, pMessage.mPosZ);
                 if (te instanceof IAlignmentProvider) {
                     IAlignment alignment = ((IAlignmentProvider) te).getAlignment();
                     if (alignment != null) {
@@ -124,8 +123,7 @@ public abstract class AlignmentMessage implements IMessage {
                 TileEntity te = world.getTileEntity(pMessage.mPosX, pMessage.mPosY, pMessage.mPosZ);
                 if (te instanceof IAlignmentProvider) {
                     IAlignment alignment = ((IAlignmentProvider) te).getAlignment();
-                    if (alignment == null)
-                        return null;
+                    if (alignment == null) return null;
                     pMessage.mAlign = alignment.getExtendedFacing().getIndex();
                     return new AlignmentData(pMessage);
                 }
@@ -133,4 +131,4 @@ public abstract class AlignmentMessage implements IMessage {
             return null;
         }
     }
-}
+}

src/main/java/com/gtnewhorizon/structurelib/net/UpdateHintParticleMessage.java

@@ -0,0 +1,77 @@
+package com.gtnewhorizon.structurelib.net;
+
+import static com.gtnewhorizon.structurelib.StructureLib.LOGGER;
+
+import com.gtnewhorizon.structurelib.StructureLib;
+import com.gtnewhorizon.structurelib.StructureLibAPI;
+import cpw.mods.fml.common.network.simpleimpl.IMessage;
+import cpw.mods.fml.common.network.simpleimpl.IMessageHandler;
+import cpw.mods.fml.common.network.simpleimpl.MessageContext;
+import io.netty.buffer.ByteBuf;
+
+public class UpdateHintParticleMessage implements IMessage {
+    private int x;
+    private short y;
+    private int z;
+    private short r;
+    private short g;
+    private short b;
+    private short a;
+
+    public UpdateHintParticleMessage() {}
+
+    public UpdateHintParticleMessage(int x, short y, int z, short r, short g, short b, short a) {
+        this.x = x;
+        this.y = y;
+        this.z = z;
+        this.r = r;
+        this.g = g;
+        this.b = b;
+        this.a = a;
+    }
+
+    @Override
+    public void fromBytes(ByteBuf buf) {
+        x = buf.readInt();
+        y = buf.readShort();
+        z = buf.readInt();
+        r = buf.readUnsignedByte();
+        g = buf.readUnsignedByte();
+        b = buf.readUnsignedByte();
+        a = buf.readUnsignedByte();
+    }
+
+    @Override
+    public void toBytes(ByteBuf buf) {
+        buf.writeInt(x);
+        buf.writeShort(y);
+        buf.writeInt(z);
+        buf.writeByte(r);
+        buf.writeByte(g);
+        buf.writeByte(b);
+        buf.writeByte(a);
+    }
+
+    public static class Handler implements IMessageHandler<UpdateHintParticleMessage, IMessage> {
+        @Override
+        public IMessage onMessage(UpdateHintParticleMessage msg, MessageContext ctx) {
+            boolean updateResult = StructureLibAPI.updateHintParticleTint(
+                    StructureLib.getCurrentPlayer(),
+                    StructureLib.getCurrentPlayer().worldObj,
+                    msg.x,
+                    msg.y,
+                    msg.z,
+                    new short[] {
+                        msg.r, msg.g, msg.b, msg.a,
+                    });
+            if (StructureLib.DEBUG_MODE)
+                LOGGER.debug(
+                        "Server instructed to update hint particle at ({}, {}, {}), result {}!",
+                        msg.x,
+                        msg.y,
+                        msg.z,
+                        updateResult);
+            return null;
+        }
+    }
+}

src/main/java/com/gtnewhorizon/structurelib/proxy/ClientProxy.java

@@ -1,66 +0,0 @@
-package com.gtnewhorizon.structurelib.proxy;
-
-import com.gtnewhorizon.structurelib.entity.fx.BlockHint;
-import com.gtnewhorizon.structurelib.entity.fx.WeightlessParticleFX;
-import net.minecraft.block.Block;
-import net.minecraft.client.Minecraft;
-import net.minecraft.client.gui.GuiNewChat;
-import net.minecraft.client.particle.EntityFX;
-import net.minecraft.entity.player.EntityPlayer;
-import net.minecraft.util.ChatComponentText;
-import net.minecraft.util.IIcon;
-import net.minecraft.world.World;
-
-import static com.gtnewhorizon.structurelib.StructureLib.RANDOM;
-
-public class ClientProxy extends CommonProxy {
-	@Override
-	public void hintParticleTinted(World w, int x, int y, int z, IIcon[] icons, short[] RGBa) {
-		Minecraft.getMinecraft().effectRenderer.addEffect(new BlockHint(w, x, y, z, icons).withColorTint(RGBa));
-
-		EntityFX particle = new WeightlessParticleFX(w, x + RANDOM.nextFloat() * 0.5F, y + RANDOM.nextFloat() * 0.5F, z + RANDOM.nextFloat() * 0.5F, 0, 0, 0);
-		particle.setRBGColorF(0, 0.6F * RANDOM.nextFloat(), 0.8f);
-		Minecraft.getMinecraft().effectRenderer.addEffect(particle);
-	}
-
-	@Override
-	public void hintParticleTinted(World w, int x, int y, int z, Block block, int meta, short[] RGBa) {
-		hintParticleTinted(w, x, y, z, createIIconFromBlock(block, meta), RGBa);
-	}
-
-	@Override
-	public void hintParticle(World w, int x, int y, int z, IIcon[] icons) {
-		hintParticleTinted(w, x, y, z, icons, new short[]{255, 255, 255, 0});
-	}
-
-	@Override
-	public void hintParticle(World w, int x, int y, int z, Block block, int meta) {
-		hintParticleTinted(w, x, y, z, createIIconFromBlock(block, meta), new short[]{255, 255, 255, 0});
-	}
-
-	private static IIcon[] createIIconFromBlock(Block block, int meta) {
-		IIcon[] ret = new IIcon[6];
-		for (int i = 0; i < 6; i++) {
-			block.getIcon(i, meta);
-		}
-		return ret;
-	}
-
-	@Override
-	public void addClientSideChatMessages(String... messages) {
-		GuiNewChat chat = Minecraft.getMinecraft().ingameGUI.getChatGUI();
-		for (String s : messages) {
-			chat.printChatMessage(new ChatComponentText(s));
-		}
-	}
-
-	@Override
-	public EntityPlayer getCurrentPlayer() {
-		return Minecraft.getMinecraft().thePlayer;
-	}
-
-	@Override
-	public boolean isCurrentPlayer(EntityPlayer player) {
-		return player == Minecraft.getMinecraft().thePlayer;
-	}
-}

src/main/java/com/gtnewhorizon/structurelib/proxy/CommonProxy.java

@@ -1,21 +0,0 @@
-package com.gtnewhorizon.structurelib.proxy;
-
-import net.minecraft.block.Block;
-import net.minecraft.entity.player.EntityPlayer;
-import net.minecraft.util.IIcon;
-import net.minecraft.world.World;
-
-public class CommonProxy {
-	public void hintParticleTinted(World w, int x, int y, int z, IIcon[] icons, short[] RGBa){}
-	public void hintParticleTinted(World w, int x, int y, int z, Block block, int meta, short[] RGBa){}
-	public void hintParticle(World w, int x, int y, int z, IIcon[] icons){}
-	public void hintParticle(World w, int x, int y, int z, Block block, int meta){}
-	public EntityPlayer getCurrentPlayer() {
-		return null;
-	}
-	public boolean isCurrentPlayer(EntityPlayer player) {
-		return false;
-	}
-	public void addClientSideChatMessages(String... messages){
-	}
-}

src/main/java/com/gtnewhorizon/structurelib/structure/IBlockPosConsumer.java

@@ -3,5 +3,5 @@ package com.gtnewhorizon.structurelib.structure;
 import net.minecraft.world.World;
 
 public interface IBlockPosConsumer {
-	void consume(World world, int x, int y, int z);
+    void consume(World world, int x, int y, int z);
 }

src/main/java/com/gtnewhorizon/structurelib/structure/ICustomBlockSetting.java

@@ -4,15 +4,15 @@ import net.minecraft.block.Block;
 import net.minecraft.world.World;
 
 public interface ICustomBlockSetting {
-	/**
-	 * Default block setting calls {@link World#setBlock(int x, int y, int z, Block block, int meta, int updateType)} like:
-	 * {@code world.setBlock(x,y,z,this/block,meta,2)} where updateType 2 means to update lighting and stuff
-	 *
-	 * @param world world that should be affected
-	 * @param x     x position to set
-	 * @param y     y position to set
-	 * @param z     z position to set
-	 * @param meta  required meta
-	 */
-	void setBlock(World world, int x, int y, int z, int meta);
+    /**
+     * Default block setting calls {@link World#setBlock(int x, int y, int z, Block block, int meta, int updateType)} like:
+     * {@code world.setBlock(x,y,z,this/block,meta,2)} where updateType 2 means to update lighting and stuff
+     *
+     * @param world world that should be affected
+     * @param x     x position to set
+     * @param y     y position to set
+     * @param z     z position to set
+     * @param meta  required meta
+     */
+    void setBlock(World world, int x, int y, int z, int meta);
 }

src/main/java/com/gtnewhorizon/structurelib/structure/IItemSource.java

@@ -0,0 +1,77 @@
+package com.gtnewhorizon.structurelib.structure;
+
+import com.gtnewhorizon.structurelib.util.InventoryIterable;
+import com.gtnewhorizon.structurelib.util.InventoryUtility;
+import com.gtnewhorizon.structurelib.util.ItemStackPredicate;
+import com.gtnewhorizon.structurelib.util.ItemStackPredicate.NBTMode;
+import java.util.Map;
+import java.util.function.Predicate;
+import javax.annotation.Nonnull;
+import net.minecraft.entity.player.EntityPlayerMP;
+import net.minecraft.inventory.IInventory;
+import net.minecraft.item.ItemStack;
+
+public interface IItemSource {
+    /**
+     * We are probably not going to need to get a lot of items from this method
+     * so I don't care about the overhead of storing all fetched items even if downstream code doesn't need it
+     */
+    @Nonnull
+    Map<ItemStack, Integer> take(Predicate<ItemStack> predicate, boolean simulate, int count);
+
+    default ItemStack takeOne(Predicate<ItemStack> predicate, boolean simulate) {
+        Map<ItemStack, Integer> take = take(predicate, simulate, 1);
+        return take.isEmpty() ? null : take.keySet().iterator().next();
+    }
+
+    default boolean takeAll(Predicate<ItemStack> predicate, boolean simulate, int count) {
+        // fast path for 1 item take requests
+        if (count == 1) return takeOne(predicate, simulate) != null;
+        Map<ItemStack, Integer> have = take(predicate, true, count);
+        if (have.values().stream().mapToInt(Integer::intValue).sum() < count) return false;
+        take(predicate, simulate, count);
+        return true;
+    }
+
+    default boolean takeOne(ItemStack stack, boolean simulate) {
+        if (stack == null || stack.getItem() == null || stack.stackSize != 1) throw new IllegalArgumentException();
+        ItemStack took = takeOne(ItemStackPredicate.from(stack, NBTMode.EXACT), simulate);
+        return took == null || took.stackSize <= 0;
+    }
+
+    default boolean takeAll(ItemStack stack, boolean simulate) {
+        // fast path for 1 item take requests
+        if (stack.stackSize == 1) return takeOne(stack, simulate);
+        ItemStackPredicate predicate = ItemStackPredicate.from(stack, NBTMode.EXACT);
+        Map<ItemStack, Integer> have = take(predicate, true, stack.stackSize);
+        if (have.values().stream().mapToInt(Integer::intValue).sum() < stack.stackSize) return false;
+        take(predicate, simulate, stack.stackSize);
+        return true;
+    }
+
+    static IItemSource fromPlayer(EntityPlayerMP player) {
+        return new IItemSource() {
+            @Nonnull
+            @Override
+            public Map<ItemStack, Integer> take(Predicate<ItemStack> p, boolean s, int c) {
+                return InventoryUtility.takeFromInventory(player, p, s, c);
+            }
+
+            @Override
+            public boolean takeOne(ItemStack stack, boolean simulate) {
+                if (stack == null || stack.getItem() == null || stack.stackSize != 1)
+                    throw new IllegalArgumentException();
+                return InventoryUtility.takeFromInventory(player, stack, simulate) == 1;
+            }
+
+            @Override
+            public boolean takeAll(ItemStack stack, boolean simulate) {
+                return InventoryUtility.takeFromInventory(player, stack, simulate) == stack.stackSize;
+            }
+        };
+    }
+
+    static IItemSource fromInventory(IInventory inv) {
+        return (p, s, c) -> InventoryUtility.takeFromInventory(new InventoryIterable<>(inv), p, s, c, true);
+    }
+}

src/main/java/com/gtnewhorizon/structurelib/structure/ISpecialItemBlock.java

@@ -0,0 +1,7 @@
+package com.gtnewhorizon.structurelib.structure;
+
+import net.minecraft.block.Block;
+
+public interface ISpecialItemBlock {
+    int getItemMetaFromBlockMeta(Block block, int blockMeta);
+}

src/main/java/com/gtnewhorizon/structurelib/structure/IStructureDefinition.java

@@ -1,168 +1,336 @@
 package com.gtnewhorizon.structurelib.structure;
 
-import com.gtnewhorizon.structurelib.StructureLib;
-import com.gtnewhorizon.structurelib.alignment.enumerable.ExtendedFacing;
-import net.minecraft.item.ItemStack;
-import net.minecraft.world.World;
-
-import java.util.Arrays;
-
 import static com.gtnewhorizon.structurelib.StructureLib.DEBUG_MODE;
 
+import com.gtnewhorizon.structurelib.StructureLib;
+import com.gtnewhorizon.structurelib.alignment.enumerable.ExtendedFacing;
+import java.util.Arrays;
+import net.minecraft.entity.player.EntityPlayerMP;
+import net.minecraft.item.ItemStack;
+import net.minecraft.world.World;
+
 public interface IStructureDefinition<T> {
-	/**
-	 * Used internally
-	 *
-	 * @param name same name as for other methods here
-	 * @return the array of elements to process
-	 */
-	IStructureElement<T>[] getStructureFor(String name);
+    /**
+     * Used internally
+     * <p>
+     * Might, but is not required, to throw {@link java.util.NoSuchElementException} if the given structure piece is not found.
+     *
+     * @param name same name as for other methods here
+     * @return the array of elements to process
+     * @throws java.util.NoSuchElementException if the given structure piece is not found and the moon phase perfectly matches
+     */
+    IStructureElement<T>[] getStructureFor(String name);
 
-	default boolean check(T object, String piece, World world, ExtendedFacing extendedFacing,
-						  int basePositionX, int basePositionY, int basePositionZ,
-						  int basePositionA, int basePositionB, int basePositionC,
-						  boolean forceCheckAllBlocks) {
-		return iterate(object, null, getStructureFor(piece), world, extendedFacing, basePositionX, basePositionY, basePositionZ,
-				basePositionA, basePositionB, basePositionC, false, forceCheckAllBlocks);
-	}
+    default boolean check(
+            T object,
+            String piece,
+            World world,
+            ExtendedFacing extendedFacing,
+            int basePositionX,
+            int basePositionY,
+            int basePositionZ,
+            int basePositionA,
+            int basePositionB,
+            int basePositionC,
+            boolean forceCheckAllBlocks) {
+        return iterate(
+                object,
+                null,
+                getStructureFor(piece),
+                world,
+                extendedFacing,
+                basePositionX,
+                basePositionY,
+                basePositionZ,
+                basePositionA,
+                basePositionB,
+                basePositionC,
+                false,
+                forceCheckAllBlocks);
+    }
 
-	default boolean hints(T object, ItemStack trigger, String piece, World world, ExtendedFacing extendedFacing,
-						  int basePositionX, int basePositionY, int basePositionZ,
-						  int basePositionA, int basePositionB, int basePositionC) {
-		return iterate(object, trigger, getStructureFor(piece), world, extendedFacing, basePositionX, basePositionY, basePositionZ,
-				basePositionA, basePositionB, basePositionC, true, null);
-	}
+    default boolean hints(
+            T object,
+            ItemStack trigger,
+            String piece,
+            World world,
+            ExtendedFacing extendedFacing,
+            int basePositionX,
+            int basePositionY,
+            int basePositionZ,
+            int basePositionA,
+            int basePositionB,
+            int basePositionC) {
+        return iterate(
+                object,
+                trigger,
+                getStructureFor(piece),
+                world,
+                extendedFacing,
+                basePositionX,
+                basePositionY,
+                basePositionZ,
+                basePositionA,
+                basePositionB,
+                basePositionC,
+                true,
+                null);
+    }
 
-	default boolean build(T object, ItemStack trigger, String piece, World world, ExtendedFacing extendedFacing,
-						  int basePositionX, int basePositionY, int basePositionZ,
-						  int basePositionA, int basePositionB, int basePositionC) {
-		return iterate(object, trigger, getStructureFor(piece), world, extendedFacing, basePositionX, basePositionY, basePositionZ,
-				basePositionA, basePositionB, basePositionC, false, null);
-	}
+    default boolean build(
+            T object,
+            ItemStack trigger,
+            String piece,
+            World world,
+            ExtendedFacing extendedFacing,
+            int basePositionX,
+            int basePositionY,
+            int basePositionZ,
+            int basePositionA,
+            int basePositionB,
+            int basePositionC) {
+        return iterate(
+                object,
+                trigger,
+                getStructureFor(piece),
+                world,
+                extendedFacing,
+                basePositionX,
+                basePositionY,
+                basePositionZ,
+                basePositionA,
+                basePositionB,
+                basePositionC,
+                false,
+                null);
+    }
 
-	default boolean buildOrHints(T object, ItemStack trigger, String piece, World world, ExtendedFacing extendedFacing,
-								 int basePositionX, int basePositionY, int basePositionZ,
-								 int basePositionA, int basePositionB, int basePositionC,
-								 boolean hintsOnly) {
-		return iterate(object, trigger, getStructureFor(piece), world, extendedFacing, basePositionX, basePositionY, basePositionZ,
-				basePositionA, basePositionB, basePositionC, hintsOnly, null);
-	}
+    default boolean buildOrHints(
+            T object,
+            ItemStack trigger,
+            String piece,
+            World world,
+            ExtendedFacing extendedFacing,
+            int basePositionX,
+            int basePositionY,
+            int basePositionZ,
+            int basePositionA,
+            int basePositionB,
+            int basePositionC,
+            boolean hintsOnly) {
+        return iterate(
+                object,
+                trigger,
+                getStructureFor(piece),
+                world,
+                extendedFacing,
+                basePositionX,
+                basePositionY,
+                basePositionZ,
+                basePositionA,
+                basePositionB,
+                basePositionC,
+                hintsOnly,
+                null);
+    }
 
-	static <T> boolean iterate(T object, ItemStack trigger, IStructureElement<T>[] elements, World world, ExtendedFacing extendedFacing,
-							   int basePositionX, int basePositionY, int basePositionZ,
-							   int basePositionA, int basePositionB, int basePositionC,
-							   boolean hintsOnly, Boolean checkBlocksIfNotNullForceCheckAllIfTrue) {
-		if (world.isRemote ^ hintsOnly) {
-			return false;
-		}
+    /**
+     * @param elementBudget build up to this many elements
+     * @param source        from where to drain resource
+     * @param actor         source of action
+     * @param check         whether {@link IStructureElement#check(Object, World, int, int, int)} should be called if anything
+     *                      would be placed. use with caution.
+     *                      if in doubt, call {@link #check(Object, String, World, ExtendedFacing, int, int, int, int, int, int, boolean)}
+     *                      after this call and set this parameter to false
+     * @return number of elements built, or -1 if structure done
+     * @see #build(Object, ItemStack, String, World, ExtendedFacing, int, int, int, int, int, int)
+     */
+    default int survivalBuild(
+            T object,
+            ItemStack trigger,
+            String piece,
+            World world,
+            ExtendedFacing extendedFacing,
+            int basePositionX,
+            int basePositionY,
+            int basePositionZ,
+            int basePositionA,
+            int basePositionB,
+            int basePositionC,
+            int elementBudget,
+            IItemSource source,
+            EntityPlayerMP actor,
+            boolean check) {
+        SurvivalBuildStructureWalker<T> walker =
+                new SurvivalBuildStructureWalker<>(object, trigger, source, actor, elementBudget, check);
+        StructureUtility.iterateV2(
+                getStructureFor(piece),
+                world,
+                extendedFacing,
+                basePositionX,
+                basePositionY,
+                basePositionZ,
+                basePositionA,
+                basePositionB,
+                basePositionC,
+                walker,
+                "survivalBuild");
+        return walker.getBuilt();
+    }
 
-		//change base position to base offset
-		basePositionA = -basePositionA;
-		basePositionB = -basePositionB;
-		basePositionC = -basePositionC;
+    static <T> boolean iterate(
+            T object,
+            ItemStack trigger,
+            IStructureElement<T>[] elements,
+            World world,
+            ExtendedFacing extendedFacing,
+            int basePositionX,
+            int basePositionY,
+            int basePositionZ,
+            int basePositionA,
+            int basePositionB,
+            int basePositionC,
+            boolean hintsOnly,
+            Boolean checkBlocksIfNotNullForceCheckAllIfTrue) {
+        if (world.isRemote ^ hintsOnly) {
+            return false;
+        }
 
-		int[] abc = new int[]{basePositionA, basePositionB, basePositionC};
-		int[] xyz = new int[3];
+        // change base position to base offset
+        basePositionA = -basePositionA;
+        basePositionB = -basePositionB;
+        basePositionC = -basePositionC;
 
-		if (checkBlocksIfNotNullForceCheckAllIfTrue != null) {
-			if (checkBlocksIfNotNullForceCheckAllIfTrue) {
-				for (IStructureElement<T> element : elements) {
-					if (element.isNavigating()) {
-						abc[0] = (element.resetA() ? basePositionA : abc[0]) + element.getStepA();
-						abc[1] = (element.resetB() ? basePositionB : abc[1]) + element.getStepB();
-						abc[2] = (element.resetC() ? basePositionC : abc[2]) + element.getStepC();
-					} else {
-						extendedFacing.getWorldOffset(abc, xyz);
-						xyz[0] += basePositionX;
-						xyz[1] += basePositionY;
-						xyz[2] += basePositionZ;
+        int[] abc = new int[] {basePositionA, basePositionB, basePositionC};
+        int[] xyz = new int[3];
 
-						if (world.blockExists(xyz[0], xyz[1], xyz[2])) {
-							if (!element.check(object, world, xyz[0], xyz[1], xyz[2])) {
-								if (DEBUG_MODE) {
-									StructureLib.LOGGER.info("Multi [" + basePositionX + ", " + basePositionY + ", " + basePositionZ + "] failed @ " +
-											Arrays.toString(xyz) + " " + Arrays.toString(abc));
-								}
-								return false;
-							}
-						} else {
-							if (DEBUG_MODE) {
-								StructureLib.LOGGER.info("Multi [" + basePositionX + ", " + basePositionY + ", " + basePositionZ + "] !blockExists @ " +
-										Arrays.toString(xyz) + " " + Arrays.toString(abc));
-							}
-							return false;
-						}
-						abc[0] += 1;
-					}
-				}
-			} else {
-				for (IStructureElement<T> element : elements) {
-					if (element.isNavigating()) {
-						abc[0] = (element.resetA() ? basePositionA : abc[0]) + element.getStepA();
-						abc[1] = (element.resetB() ? basePositionB : abc[1]) + element.getStepB();
-						abc[2] = (element.resetC() ? basePositionC : abc[2]) + element.getStepC();
-					} else {
-						extendedFacing.getWorldOffset(abc, xyz);
-						xyz[0] += basePositionX;
-						xyz[1] += basePositionY;
-						xyz[2] += basePositionZ;
+        if (checkBlocksIfNotNullForceCheckAllIfTrue != null) {
+            if (checkBlocksIfNotNullForceCheckAllIfTrue) {
+                for (IStructureElement<T> element : elements) {
+                    if (element.isNavigating()) {
+                        abc[0] = (element.resetA() ? basePositionA : abc[0]) + element.getStepA();
+                        abc[1] = (element.resetB() ? basePositionB : abc[1]) + element.getStepB();
+                        abc[2] = (element.resetC() ? basePositionC : abc[2]) + element.getStepC();
+                    } else {
+                        extendedFacing.getWorldOffset(abc, xyz);
+                        xyz[0] += basePositionX;
+                        xyz[1] += basePositionY;
+                        xyz[2] += basePositionZ;
 
-						if (world.blockExists(xyz[0], xyz[1], xyz[2])) {
-							if (!element.check(object, world, xyz[0], xyz[1], xyz[2])) {
-								if (DEBUG_MODE) {
-									StructureLib.LOGGER.info("Multi [" + basePositionX + ", " + basePositionY + ", " + basePositionZ + "] failed @ " +
-											Arrays.toString(xyz) + " " + Arrays.toString(abc));
-								}
-								return false;
-							}
-						} else {
-							if (DEBUG_MODE) {
-								StructureLib.LOGGER.info("Multi [" + basePositionX + ", " + basePositionY + ", " + basePositionZ + "] !blockExists @ " +
-										Arrays.toString(xyz) + " " + Arrays.toString(abc));
-							}
-						}
-						abc[0] += 1;
-					}
-				}
-			}
-		} else {
-			if (hintsOnly) {
-				for (IStructureElement<T> element : elements) {
-					if (element.isNavigating()) {
-						abc[0] = (element.resetA() ? basePositionA : abc[0]) + element.getStepA();
-						abc[1] = (element.resetB() ? basePositionB : abc[1]) + element.getStepB();
-						abc[2] = (element.resetC() ? basePositionC : abc[2]) + element.getStepC();
-					} else {
-						extendedFacing.getWorldOffset(abc, xyz);
-						xyz[0] += basePositionX;
-						xyz[1] += basePositionY;
-						xyz[2] += basePositionZ;
+                        StructureLib.LOGGER.info(
+                                "Multi [{}, {}, {}] step @ {} {}",
+                                basePositionX,
+                                basePositionY,
+                                basePositionZ,
+                                Arrays.toString(xyz),
+                                Arrays.toString(abc));
 
-						element.spawnHint(object, world, xyz[0], xyz[1], xyz[2], trigger);
+                        if (world.blockExists(xyz[0], xyz[1], xyz[2])) {
+                            if (!element.check(object, world, xyz[0], xyz[1], xyz[2])) {
+                                if (DEBUG_MODE) {
+                                    StructureLib.LOGGER.info("Multi [" + basePositionX + ", " + basePositionY + ", "
+                                            + basePositionZ + "] failed @ " + Arrays.toString(xyz) + " "
+                                            + Arrays.toString(abc));
+                                }
+                                return false;
+                            }
+                        } else {
+                            if (DEBUG_MODE) {
+                                StructureLib.LOGGER.info("Multi [" + basePositionX + ", " + basePositionY + ", "
+                                        + basePositionZ + "] !blockExists @ " + Arrays.toString(xyz) + " "
+                                        + Arrays.toString(abc));
+                            }
+                            return false;
+                        }
+                        abc[0] += 1;
+                    }
+                }
+            } else {
+                for (IStructureElement<T> element : elements) {
+                    if (element.isNavigating()) {
+                        abc[0] = (element.resetA() ? basePositionA : abc[0]) + element.getStepA();
+                        abc[1] = (element.resetB() ? basePositionB : abc[1]) + element.getStepB();
+                        abc[2] = (element.resetC() ? basePositionC : abc[2]) + element.getStepC();
+                    } else {
+                        extendedFacing.getWorldOffset(abc, xyz);
+                        xyz[0] += basePositionX;
+                        xyz[1] += basePositionY;
+                        xyz[2] += basePositionZ;
 
-						abc[0] += 1;
-					}
-				}
-			} else {
-				for (IStructureElement<T> element : elements) {
-					if (element.isNavigating()) {
-						abc[0] = (element.resetA() ? basePositionA : abc[0]) + element.getStepA();
-						abc[1] = (element.resetB() ? basePositionB : abc[1]) + element.getStepB();
-						abc[2] = (element.resetC() ? basePositionC : abc[2]) + element.getStepC();
-					} else {
-						extendedFacing.getWorldOffset(abc, xyz);
-						xyz[0] += basePositionX;
-						xyz[1] += basePositionY;
-						xyz[2] += basePositionZ;
+                        StructureLib.LOGGER.info(
+                                "Multi [{}, {}, {}] step @ {} {}",
+                                basePositionX,
+                                basePositionY,
+                                basePositionZ,
+                                Arrays.toString(xyz),
+                                Arrays.toString(abc));
 
-						if (world.blockExists(xyz[0], xyz[1], xyz[2])) {
-							element.placeBlock(object, world, xyz[0], xyz[1], xyz[2], trigger);
-						}
-						abc[0] += 1;
-					}
-				}
-			}
-		}
-		return true;
-	}
+                        if (world.blockExists(xyz[0], xyz[1], xyz[2])) {
+                            if (!element.check(object, world, xyz[0], xyz[1], xyz[2])) {
+                                if (DEBUG_MODE) {
+                                    StructureLib.LOGGER.info("Multi [" + basePositionX + ", " + basePositionY + ", "
+                                            + basePositionZ + "] failed @ " + Arrays.toString(xyz) + " "
+                                            + Arrays.toString(abc));
+                                }
+                                return false;
+                            }
+                        } else {
+                            if (DEBUG_MODE) {
+                                StructureLib.LOGGER.info("Multi [" + basePositionX + ", " + basePositionY + ", "
+                                        + basePositionZ + "] !blockExists @ " + Arrays.toString(xyz) + " "
+                                        + Arrays.toString(abc));
+                            }
+                        }
+                        abc[0] += 1;
+                    }
+                }
+            }
+            if (DEBUG_MODE) {
+                StructureLib.LOGGER.info(
+                        "Multi [" + basePositionX + ", " + basePositionY + ", " + basePositionZ + "] pass");
+            }
+        } else {
+            if (hintsOnly) {
+                for (IStructureElement<T> element : elements) {
+                    if (element.isNavigating()) {
+                        abc[0] = (element.resetA() ? basePositionA : abc[0]) + element.getStepA();
+                        abc[1] = (element.resetB() ? basePositionB : abc[1]) + element.getStepB();
+                        abc[2] = (element.resetC() ? basePositionC : abc[2]) + element.getStepC();
+                    } else {
+                        extendedFacing.getWorldOffset(abc, xyz);
+                        xyz[0] += basePositionX;
+                        xyz[1] += basePositionY;
+                        xyz[2] += basePositionZ;
+
+                        element.spawnHint(object, world, xyz[0], xyz[1], xyz[2], trigger);
+
+                        abc[0] += 1;
+                    }
+                }
+            } else {
+                for (IStructureElement<T> element : elements) {
+                    if (element.isNavigating()) {
+                        abc[0] = (element.resetA() ? basePositionA : abc[0]) + element.getStepA();
+                        abc[1] = (element.resetB() ? basePositionB : abc[1]) + element.getStepB();
+                        abc[2] = (element.resetC() ? basePositionC : abc[2]) + element.getStepC();
+                    } else {
+                        extendedFacing.getWorldOffset(abc, xyz);
+                        xyz[0] += basePositionX;
+                        xyz[1] += basePositionY;
+                        xyz[2] += basePositionZ;
+
+                        if (world.blockExists(xyz[0], xyz[1], xyz[2])) {
+                            element.placeBlock(object, world, xyz[0], xyz[1], xyz[2], trigger);
+                        }
+                        abc[0] += 1;
+                    }
+                }
+            }
+        }
+        return true;
+    }
+
+    static <T> StructureDefinition.Builder<T> builder() {
+        return StructureDefinition.builder();
+    }
 }

src/main/java/com/gtnewhorizon/structurelib/structure/IStructureElement.java

@@ -1,43 +1,122 @@
 package com.gtnewhorizon.structurelib.structure;
 
+import static com.gtnewhorizon.structurelib.StructureLib.DEBUG_MODE;
+import static com.gtnewhorizon.structurelib.StructureLib.LOGGER;
+import static com.gtnewhorizon.structurelib.StructureLib.PANIC_MODE;
+
+import com.gtnewhorizon.structurelib.StructureLibAPI;
+import java.util.function.Consumer;
+import net.minecraft.entity.player.EntityPlayerMP;
 import net.minecraft.item.ItemStack;
+import net.minecraft.util.IChatComponent;
 import net.minecraft.world.World;
 
 /**
  * Use StructureUtility to instantiate
  */
 public interface IStructureElement<T> {
-	boolean check(T t, World world, int x, int y, int z);
+    boolean check(T t, World world, int x, int y, int z);
 
-	boolean spawnHint(T t, World world, int x, int y, int z, ItemStack trigger);
+    boolean spawnHint(T t, World world, int x, int y, int z, ItemStack trigger);
 
-	boolean placeBlock(T t, World world, int x, int y, int z, ItemStack trigger);
+    boolean placeBlock(T t, World world, int x, int y, int z, ItemStack trigger);
 
-	default int getStepA() {
-		return 1;
-	}
+    /**
+     * Try place the block by taking resource from given IItemSource.
+     *
+     * @param s       drain resources from this place
+     * @param actor   source of action.
+     * @param chatter
+     */
+    default PlaceResult survivalPlaceBlock(
+            T t,
+            World world,
+            int x,
+            int y,
+            int z,
+            ItemStack trigger,
+            IItemSource s,
+            EntityPlayerMP actor,
+            Consumer<IChatComponent> chatter) {
+        if (PANIC_MODE) throw new RuntimeException("Panic Tripwire hit");
+        if (DEBUG_MODE)
+            LOGGER.error(
+                    "Default implementation of survivalPlaceBlock hit! Things aren't going to work well! IStructureElement class: {}",
+                    getClass().getName());
+        if (!StructureLibAPI.isBlockTriviallyReplaceable(world, x, y, z, actor)) return PlaceResult.REJECT;
+        return PlaceResult.SKIP;
+    }
 
-	default int getStepB() {
-		return 0;
-	}
+    /**
+     * Forget the messed up class dependency graph for now. this is just so convenient.
+     */
+    default IStructureElementNoPlacement<T> noPlacement() {
+        return new IStructureElementNoPlacement<T>() {
 
-	default int getStepC() {
-		return 0;
-	}
+            @Override
+            public boolean check(T t, World world, int x, int y, int z) {
+                return IStructureElement.this.check(t, world, x, y, z);
+            }
 
-	default boolean resetA() {
-		return false;
-	}
+            @Override
+            public boolean spawnHint(T t, World world, int x, int y, int z, ItemStack trigger) {
+                return IStructureElement.this.spawnHint(t, world, x, y, z, trigger);
+            }
+        };
+    }
 
-	default boolean resetB() {
-		return false;
-	}
+    default int getStepA() {
+        return 1;
+    }
 
-	default boolean resetC() {
-		return false;
-	}
+    default int getStepB() {
+        return 0;
+    }
 
-	default boolean isNavigating() {
-		return false;
-	}
+    default int getStepC() {
+        return 0;
+    }
+
+    default boolean resetA() {
+        return false;
+    }
+
+    default boolean resetB() {
+        return false;
+    }
+
+    default boolean resetC() {
+        return false;
+    }
+
+    default boolean isNavigating() {
+        return false;
+    }
+
+    enum PlaceResult {
+        /**
+         * This element either exists already, or does not yet have an implementation for survivalPlaceBlock, or
+         * some other unforeseen situations.
+         */
+        SKIP,
+        /**
+         * This element's space is occupied by other stuff and require player attention, or player missing required resource,
+         * or the block cannot be placed due to obscure mechanisms, or some other unforeseen situations.
+         */
+        REJECT,
+        /**
+         * Autoplace cannot proceed within this tick. To proceed further would require stopping the placement and wait for next round.
+         */
+        STOP,
+        /**
+         * Element placed successfully.
+         */
+        ACCEPT,
+        /**
+         * Combination of ACCEPT and STOP.
+         *
+         * Element placed successfully. To proceed further would require stopping the placement and wait for next round.
+         */
+        ACCEPT_STOP;
+    }
 }

src/main/java/com/gtnewhorizon/structurelib/structure/IStructureElementChain.java

@@ -1,41 +1,77 @@
 package com.gtnewhorizon.structurelib.structure;
 
+import java.util.ArrayList;
+import java.util.List;
+import java.util.function.Consumer;
+import net.minecraft.entity.player.EntityPlayerMP;
 import net.minecraft.item.ItemStack;
+import net.minecraft.util.IChatComponent;
 import net.minecraft.world.World;
 
 /**
  * Use StructureUtility to instantiate
  */
 public interface IStructureElementChain<T> extends IStructureElement<T> {
-	IStructureElement<T>[] fallbacks();
+    IStructureElement<T>[] fallbacks();
 
-	@Override
-	default boolean check(T t, World world, int x, int y, int z) {
-		for (IStructureElement<T> fallback : fallbacks()) {
-			if (fallback.check(t, world, x, y, z)) {
-				return true;
-			}
-		}
-		return false;
-	}
+    @Override
+    default boolean check(T t, World world, int x, int y, int z) {
+        for (IStructureElement<T> fallback : fallbacks()) {
+            if (fallback.check(t, world, x, y, z)) {
+                return true;
+            }
+        }
+        return false;
+    }
 
-	@Override
-	default boolean spawnHint(T t, World world, int x, int y, int z, ItemStack trigger) {
-		for (IStructureElement<T> fallback : fallbacks()) {
-			if (fallback.spawnHint(t, world, x, y, z, trigger)) {
-				return true;
-			}
-		}
-		return false;
-	}
+    @Override
+    default boolean spawnHint(T t, World world, int x, int y, int z, ItemStack trigger) {
+        for (IStructureElement<T> fallback : fallbacks()) {
+            if (fallback.spawnHint(t, world, x, y, z, trigger)) {
+                return true;
+            }
+        }
+        return false;
+    }
 
-	@Override
-	default boolean placeBlock(T t, World world, int x, int y, int z, ItemStack trigger) {
-		for (IStructureElement<T> fallback : fallbacks()) {
-			if (fallback.placeBlock(t, world, x, y, z, trigger)) {
-				return true;
-			}
-		}
-		return false;
-	}
+    @Override
+    default boolean placeBlock(T t, World world, int x, int y, int z, ItemStack trigger) {
+        for (IStructureElement<T> fallback : fallbacks()) {
+            if (fallback.placeBlock(t, world, x, y, z, trigger)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    @Override
+    default PlaceResult survivalPlaceBlock(
+            T t,
+            World world,
+            int x,
+            int y,
+            int z,
+            ItemStack trigger,
+            IItemSource s,
+            EntityPlayerMP actor,
+            Consumer<IChatComponent> chatter) {
+        boolean haveSkip = false;
+        List<IChatComponent> bufferedNoise = new ArrayList<>();
+        for (IStructureElement<T> fallback : fallbacks()) {
+            PlaceResult result = fallback.survivalPlaceBlock(t, world, x, y, z, trigger, s, actor, bufferedNoise::add);
+            switch (result) {
+                case REJECT:
+                    break;
+                case SKIP:
+                    haveSkip = true;
+                    break;
+                default:
+                    return result;
+            }
+        }
+        // dump all that noise back into upstream
+        bufferedNoise.forEach(chatter);
+        // TODO need reconsider to ensure this is the right course of action
+        return haveSkip ? PlaceResult.SKIP : PlaceResult.REJECT;
+    }
 }

src/main/java/com/gtnewhorizon/structurelib/structure/IStructureElementCheckOnly.java

@@ -1,16 +1,33 @@
 package com.gtnewhorizon.structurelib.structure;
 
+import java.util.function.Consumer;
+import net.minecraft.entity.player.EntityPlayerMP;
 import net.minecraft.item.ItemStack;
+import net.minecraft.util.IChatComponent;
 import net.minecraft.world.World;
 
 public interface IStructureElementCheckOnly<T> extends IStructureElement<T> {
-	@Override
-	default boolean placeBlock(T t, World world, int x, int y, int z, ItemStack trigger) {
-		return false;
-	}
+    @Override
+    default boolean placeBlock(T t, World world, int x, int y, int z, ItemStack trigger) {
+        return false;
+    }
 
-	@Override
-	default boolean spawnHint(T t, World world, int x, int y, int z, ItemStack trigger) {
-		return false;
-	}
+    @Override
+    default boolean spawnHint(T t, World world, int x, int y, int z, ItemStack trigger) {
+        return false;
+    }
+
+    @Override
+    default PlaceResult survivalPlaceBlock(
+            T t,
+            World world,
+            int x,
+            int y,
+            int z,
+            ItemStack trigger,
+            IItemSource s,
+            EntityPlayerMP actor,
+            Consumer<IChatComponent> chatter) {
+        return PlaceResult.SKIP;
+    }
 }

src/main/java/com/gtnewhorizon/structurelib/structure/IStructureElementDeferred.java

@@ -3,5 +3,4 @@ package com.gtnewhorizon.structurelib.structure;
 /**
  * Use StructureUtility to instantiate
  */
-public interface IStructureElementDeferred<T> extends IStructureElement<T> {
-}
+public interface IStructureElementDeferred<T> extends IStructureElement<T> {}

src/main/java/com/gtnewhorizon/structurelib/structure/IStructureElementNoPlacement.java

@@ -1,11 +1,33 @@
 package com.gtnewhorizon.structurelib.structure;
 
+import java.util.function.Consumer;
+import net.minecraft.entity.player.EntityPlayerMP;
 import net.minecraft.item.ItemStack;
+import net.minecraft.util.IChatComponent;
 import net.minecraft.world.World;
 
 public interface IStructureElementNoPlacement<T> extends IStructureElement<T> {
-	@Override
-	default boolean placeBlock(T t, World world, int x, int y, int z, ItemStack trigger) {
-		return false;
-	}
+    @Override
+    default boolean placeBlock(T t, World world, int x, int y, int z, ItemStack trigger) {
+        return false;
+    }
+
+    @Override
+    default PlaceResult survivalPlaceBlock(
+            T t,
+            World world,
+            int x,
+            int y,
+            int z,
+            ItemStack trigger,
+            IItemSource s,
+            EntityPlayerMP actor,
+            Consumer<IChatComponent> chatter) {
+        return PlaceResult.REJECT;
+    }
+
+    @Override
+    default IStructureElementNoPlacement<T> noPlacement() {
+        return this;
+    }
 }

src/main/java/com/gtnewhorizon/structurelib/structure/IStructureNavigate.java

@@ -1,28 +1,45 @@
 package com.gtnewhorizon.structurelib.structure;
 
+import java.util.function.Consumer;
+import net.minecraft.entity.player.EntityPlayerMP;
 import net.minecraft.item.ItemStack;
+import net.minecraft.util.IChatComponent;
 import net.minecraft.world.World;
 
 /**
  * Use StructureUtility to instantiate
  */
 interface IStructureNavigate<T> extends IStructureElement<T> {
-	@Override
-	default boolean check(T t, World world, int x, int y, int z) {
-		return true;
-	}
+    @Override
+    default boolean check(T t, World world, int x, int y, int z) {
+        return true;
+    }
 
-	@Override
-	default boolean spawnHint(T t, World world, int x, int y, int z, ItemStack trigger) {
-		return true;
-	}
+    @Override
+    default boolean spawnHint(T t, World world, int x, int y, int z, ItemStack trigger) {
+        return true;
+    }
 
-	@Override
-	default boolean placeBlock(T t, World world, int x, int y, int z, ItemStack trigger) {
-		return true;
-	}
+    @Override
+    default boolean placeBlock(T t, World world, int x, int y, int z, ItemStack trigger) {
+        return true;
+    }
 
-	default boolean isNavigating() {
-		return true;
-	}
+    @Override
+    default PlaceResult survivalPlaceBlock(
+            T t,
+            World world,
+            int x,
+            int y,
+            int z,
+            ItemStack trigger,
+            IItemSource s,
+            EntityPlayerMP actor,
+            Consumer<IChatComponent> chatter) {
+        return PlaceResult.SKIP;
+    }
+
+    default boolean isNavigating() {
+        return true;
+    }
 }

src/main/java/com/gtnewhorizon/structurelib/structure/IStructureWalker.java

@@ -0,0 +1,7 @@
+package com.gtnewhorizon.structurelib.structure;
+
+import net.minecraft.world.World;
+
+public interface IStructureWalker<T> {
+    boolean visit(IStructureElement<T> element, World world, int x, int y, int z);
+}

src/main/java/com/gtnewhorizon/structurelib/structure/ITierConverter.java

@@ -0,0 +1,13 @@
+package com.gtnewhorizon.structurelib.structure;
+
+import net.minecraft.block.Block;
+
+/**
+ * a function to extract tier info from a block.
+ *
+ * @param <TIER>
+ */
+@FunctionalInterface
+public interface ITierConverter<TIER> {
+    TIER convert(Block block, int meta);
+}

src/main/java/com/gtnewhorizon/structurelib/structure/IWithExtendedContext.java

@@ -0,0 +1,15 @@
+package com.gtnewhorizon.structurelib.structure;
+
+/**
+ * Implement this and use {@link StructureUtility#withContext(IStructureElement)} in case you need to record some
+ * temporary states that don't need to live in your main context, which would usually live for the whole lifetime of the
+ * structure than just during structure check. Usually just save some few bytes, but becomes non trivial if you need to
+ * record too much stuff.
+ * <p>
+ * You will have to reset the context yourself though. The API can't guess when the old context becomes invalid.
+ *
+ * @param <CTX> the temporary state context
+ */
+public interface IWithExtendedContext<CTX> {
+    CTX getCurrentContext();
+}

src/main/java/com/gtnewhorizon/structurelib/structure/LazyStructureElement.java

@@ -0,0 +1,54 @@
+package com.gtnewhorizon.structurelib.structure;
+
+import java.util.function.Consumer;
+import java.util.function.Function;
+import net.minecraft.entity.player.EntityPlayerMP;
+import net.minecraft.item.ItemStack;
+import net.minecraft.util.IChatComponent;
+import net.minecraft.world.World;
+
+class LazyStructureElement<T> implements IStructureElementDeferred<T> {
+    private Function<T, IStructureElement<T>> to;
+    private IStructureElement<T> elem;
+
+    public LazyStructureElement(Function<T, IStructureElement<T>> to) {
+        this.to = to;
+    }
+
+    private IStructureElement<T> get(T t) {
+        if (to != null) {
+            elem = to.apply(t);
+            to = null;
+        }
+        return elem;
+    }
+
+    @Override
+    public boolean check(T t, World world, int x, int y, int z) {
+        return get(t).check(t, world, x, y, z);
+    }
+
+    @Override
+    public boolean placeBlock(T t, World world, int x, int y, int z, ItemStack trigger) {
+        return get(t).placeBlock(t, world, x, y, z, trigger);
+    }
+
+    @Override
+    public boolean spawnHint(T t, World world, int x, int y, int z, ItemStack trigger) {
+        return get(t).spawnHint(t, world, x, y, z, trigger);
+    }
+
+    @Override
+    public PlaceResult survivalPlaceBlock(
+            T t,
+            World world,
+            int x,
+            int y,
+            int z,
+            ItemStack trigger,
+            IItemSource s,
+            EntityPlayerMP actor,
+            Consumer<IChatComponent> chatter) {
+        return get(t).survivalPlaceBlock(t, world, x, y, z, trigger, s, actor, chatter);
+    }
+}

src/main/java/com/gtnewhorizon/structurelib/structure/StructureDefinition.java

@@ -1,198 +1,197 @@
 package com.gtnewhorizon.structurelib.structure;
 
-import com.gtnewhorizon.structurelib.util.Vec3Impl;
-
-import java.util.*;
-import java.util.stream.Collectors;
-
 import static com.gtnewhorizon.structurelib.StructureLib.DEBUG_MODE;
 import static com.gtnewhorizon.structurelib.structure.StructureUtility.*;
 
+import com.gtnewhorizon.structurelib.util.Vec3Impl;
+import java.util.*;
+import java.util.stream.Collectors;
+
 public class StructureDefinition<T> implements IStructureDefinition<T> {
-	private final Map<Character, IStructureElement<T>> elements;
-	private final Map<String, String> shapes;
-	private final Map<String, IStructureElement<T>[]> structures;
+    private final Map<Character, IStructureElement<T>> elements;
+    private final Map<String, String> shapes;
+    private final Map<String, IStructureElement<T>[]> structures;
 
-	public static <B> Builder<B> builder() {
-		return new Builder<>();
-	}
+    public static <B> Builder<B> builder() {
+        return new Builder<>();
+    }
 
-	private StructureDefinition(
-			Map<Character, IStructureElement<T>> elements,
-			Map<String, String> shapes,
-			Map<String, IStructureElement<T>[]> structures) {
-		this.elements = elements;
-		this.shapes = shapes;
-		this.structures = structures;
-	}
+    private StructureDefinition(
+            Map<Character, IStructureElement<T>> elements,
+            Map<String, String> shapes,
+            Map<String, IStructureElement<T>[]> structures) {
+        this.elements = elements;
+        this.shapes = shapes;
+        this.structures = structures;
+    }
 
-	public static class Builder<T> {
-		private static final char A = '\uA000';
-		private static final char B = '\uB000';
-		private static final char C = '\uC000';
-		private char d = '\uD000';
-		private final Map<Vec3Impl, Character> navigates;
-		private final Map<Character, IStructureElement<T>> elements;
-		private final Map<String, String> shapes;
+    public static class Builder<T> {
+        private static final char A = '\uA000';
+        private static final char B = '\uB000';
+        private static final char C = '\uC000';
+        private char d = '\uD000';
+        private final Map<Vec3Impl, Character> navigates;
+        private final Map<Character, IStructureElement<T>> elements;
+        private final Map<String, String> shapes;
 
-		private Builder() {
-			navigates = new HashMap<>();
-			elements = new HashMap<>();
-			shapes = new HashMap<>();
-		}
+        private Builder() {
+            navigates = new HashMap<>();
+            elements = new HashMap<>();
+            shapes = new HashMap<>();
+        }
 
-		public Map<Character, IStructureElement<T>> getElements() {
-			return elements;
-		}
+        public Map<Character, IStructureElement<T>> getElements() {
+            return elements;
+        }
 
-		public Map<String, String> getShapes() {
-			return shapes;
-		}
+        public Map<String, String> getShapes() {
+            return shapes;
+        }
 
-		/**
-		 * Adds shape
-		 * + is anything but air
-		 * - is air checks
-		 * space bar is skip
-		 * ~ is also skip (but marks controller position, optional and logically it is a space...)
-		 * rest needs to be defined
-		 * <p>
-		 * next char is next block(a)
-		 * next string is next line(b)
-		 * next string[] is next slice(c)
-		 * <p>
-		 * char A000-FFFF range is reserved for generated skips
-		 *
-		 * @param name           unlocalized/code name
-		 * @param structurePiece generated or written struct - DO NOT STORE IT ANYWHERE, or at least set them to null afterwards
-		 * @return this builder
-		 */
-		public Builder<T> addShape(String name, String[][] structurePiece) {
-			StringBuilder builder = new StringBuilder();
-			if (structurePiece.length > 0) {
-				for (String[] strings : structurePiece) {
-					if (strings.length > 0) {
-						for (String string : strings) {
-							builder.append(string).append(B);
-						}
-						builder.setLength(builder.length() - 1);
-					}
-					builder.append(C);
-				}
-				builder.setLength(builder.length() - 1);
-			}
-			int a = 0, b = 0, c = 0;
-			for (int i = 0; i < builder.length(); i++) {
-				char ch = builder.charAt(i);
-				if (ch == ' ' || ch == '~') {
-					builder.setCharAt(i, A);
-					ch = A;
-				}
-				if (ch == A) {
-					a++;
-				} else if (ch == B) {
-					a = 0;
-					b++;
-				} else if (ch == C) {
-					a = 0;
-					b = 0;
-					c++;
-				} else if (a != 0 || b != 0 || c != 0) {
-					Vec3Impl vec3 = new Vec3Impl(a, b, c);
-					Character navigate = navigates.get(vec3);
-					if (navigate == null) {
-						navigate = d++;
-						navigates.put(vec3, navigate);
-						addElement(navigate, step(vec3));
-					}
-					builder.setCharAt(i - 1, navigate);
-					a = 0;
-					b = 0;
-					c = 0;
-				}
-			}
+        /**
+         * Adds shape
+         * + is anything but air
+         * - is air checks
+         * space bar is skip
+         * ~ is also skip (but marks controller position, optional and logically it is a space...)
+         * rest needs to be defined
+         * <p>
+         * next char is next block(a)
+         * next string is next line(b)
+         * next string[] is next slice(c)
+         * <p>
+         * char A000-FFFF range is reserved for generated skips
+         *
+         * @param name           unlocalized/code name
+         * @param structurePiece generated or written struct - DO NOT STORE IT ANYWHERE, or at least set them to null afterwards
+         * @return this builder
+         */
+        public Builder<T> addShape(String name, String[][] structurePiece) {
+            StringBuilder builder = new StringBuilder();
+            if (structurePiece.length > 0) {
+                for (String[] strings : structurePiece) {
+                    if (strings.length > 0) {
+                        for (String string : strings) {
+                            builder.append(string).append(B);
+                        }
+                        builder.setLength(builder.length() - 1);
+                    }
+                    builder.append(C);
+                }
+                builder.setLength(builder.length() - 1);
+            }
+            int a = 0, b = 0, c = 0;
+            for (int i = 0; i < builder.length(); i++) {
+                char ch = builder.charAt(i);
+                if (ch == ' ' || ch == '~') {
+                    builder.setCharAt(i, A);
+                    ch = A;
+                }
+                if (ch == A) {
+                    a++;
+                } else if (ch == B) {
+                    a = 0;
+                    b++;
+                } else if (ch == C) {
+                    a = 0;
+                    b = 0;
+                    c++;
+                } else if (a != 0 || b != 0 || c != 0) {
+                    Vec3Impl vec3 = new Vec3Impl(a, b, c);
+                    Character navigate = navigates.get(vec3);
+                    if (navigate == null) {
+                        navigate = d++;
+                        navigates.put(vec3, navigate);
+                        addElement(navigate, step(vec3));
+                    }
+                    builder.setCharAt(i - 1, navigate);
+                    a = 0;
+                    b = 0;
+                    c = 0;
+                }
+            }
 
-			String built = builder.toString().replaceAll("[\\uA000\\uB000\\uC000]", "");
+            String built = builder.toString().replaceAll("[\\uA000\\uB000\\uC000]", "");
 
-			if (built.contains("+")) {
-				addElement('+', notAir());
-			}
-			if (built.contains("-")) {
-				addElement('-', isAir());
-			}
-			shapes.put(name, built);
-			return this;
-		}
+            if (built.contains("+")) {
+                addElement('+', notAir());
+            }
+            if (built.contains("-")) {
+                addElement('-', isAir());
+            }
+            shapes.put(name, built);
+            return this;
+        }
 
-		public Builder<T> addElement(Character name, IStructureElement<T> structurePiece) {
-			elements.putIfAbsent(name, structurePiece);
-			return this;
-		}
+        public Builder<T> addElement(Character name, IStructureElement<T> structurePiece) {
+            elements.putIfAbsent(name, structurePiece);
+            return this;
+        }
 
-		public IStructureDefinition<T> build() {
-			Map<String, IStructureElement<T>[]> structures = compileStructureMap();
-			if (DEBUG_MODE) {
-				return new StructureDefinition<>(new HashMap<>(elements), new HashMap<>(shapes), structures);
-			} else {
-				return structures::get;
-			}
-		}
+        public IStructureDefinition<T> build() {
+            Map<String, IStructureElement<T>[]> structures = compileStructureMap();
+            if (DEBUG_MODE) {
+                return new StructureDefinition<>(new HashMap<>(elements), new HashMap<>(shapes), structures);
+            } else {
+                return structures::get;
+            }
+        }
 
-		@SuppressWarnings("unchecked")
-		private Map<String, IStructureElement<T>[]> compileElementSetMap() {
-			Set<Integer> missing = findMissing();
-			if (missing.isEmpty()) {
-				return shapes.entrySet().stream()
-						.collect(Collectors.toMap(Map.Entry::getKey,
-								e -> e.getValue().chars()
-										.mapToObj(c -> (char) c)
-										.distinct()
-										.map(elements::get)
-										.toArray(IStructureElement[]::new)
-						));
-			} else {
-				throw new RuntimeException("Missing Structure Element bindings for (chars as integers): " +
-						Arrays.toString(missing.toArray()));
-			}
-		}
+        @SuppressWarnings("unchecked")
+        private Map<String, IStructureElement<T>[]> compileElementSetMap() {
+            Set<Integer> missing = findMissing();
+            if (missing.isEmpty()) {
+                return shapes.entrySet().stream().collect(Collectors.toMap(Map.Entry::getKey, e -> e.getValue()
+                        .chars()
+                        .mapToObj(c -> (char) c)
+                        .distinct()
+                        .map(elements::get)
+                        .toArray(IStructureElement[]::new)));
+            } else {
+                throw new RuntimeException("Missing Structure Element bindings for (chars as integers): "
+                        + Arrays.toString(missing.toArray()));
+            }
+        }
 
-		@SuppressWarnings("unchecked")
-		private Map<String, IStructureElement<T>[]> compileStructureMap() {
-			Set<Integer> missing = findMissing();
-			if (missing.isEmpty()) {
-				return shapes.entrySet().stream()
-						.collect(Collectors.toMap(Map.Entry::getKey,
-								e -> e.getValue().chars().mapToObj(c -> elements.get((char) c)).toArray(IStructureElement[]::new)
-						));
-			} else {
-				throw new RuntimeException("Missing Structure Element bindings for (chars as integers): " +
-						Arrays.toString(missing.toArray()));
-			}
-		}
+        @SuppressWarnings("unchecked")
+        private Map<String, IStructureElement<T>[]> compileStructureMap() {
+            Set<Integer> missing = findMissing();
+            if (missing.isEmpty()) {
+                return shapes.entrySet().stream().collect(Collectors.toMap(Map.Entry::getKey, e -> e.getValue()
+                        .chars()
+                        .mapToObj(c -> elements.get((char) c))
+                        .toArray(IStructureElement[]::new)));
+            } else {
+                throw new RuntimeException("Missing Structure Element bindings for (chars as integers): "
+                        + Arrays.toString(missing.toArray()));
+            }
+        }
 
-		private Set<Integer> findMissing() {
-			return shapes.values().stream()
-					.flatMapToInt(CharSequence::chars)
-					.filter(i -> !elements.containsKey((char) i))
-					.boxed()
-					.collect(Collectors.toSet());
-		}
-	}
+        private Set<Integer> findMissing() {
+            return shapes.values().stream()
+                    .flatMapToInt(CharSequence::chars)
+                    .filter(i -> !elements.containsKey((char) i))
+                    .boxed()
+                    .collect(Collectors.toSet());
+        }
+    }
 
-	public Map<Character, IStructureElement<T>> getElements() {
-		return elements;
-	}
+    public Map<Character, IStructureElement<T>> getElements() {
+        return elements;
+    }
 
-	public Map<String, String> getShapes() {
-		return shapes;
-	}
+    public Map<String, String> getShapes() {
+        return shapes;
+    }
 
-	public Map<String, IStructureElement<T>[]> getStructures() {
-		return structures;
-	}
+    public Map<String, IStructureElement<T>[]> getStructures() {
+        return structures;
+    }
 
-	@Override
-	public IStructureElement<T>[] getStructureFor(String name) {
-		return structures.get(name);
-	}
-}
+    @Override
+    public IStructureElement<T>[] getStructureFor(String name) {
+        IStructureElement<T>[] elements = structures.get(name);
+        if (elements == null) throw new NoSuchElementException(name);
+        return elements;
+    }
+}

src/main/java/com/gtnewhorizon/structurelib/structure/SurvivalBuildStructureWalker.java

@@ -0,0 +1,58 @@
+package com.gtnewhorizon.structurelib.structure;
+
+import com.gtnewhorizon.structurelib.StructureLibAPI;
+import com.gtnewhorizon.structurelib.alignment.constructable.ConstructableUtility;
+import com.gtnewhorizon.structurelib.structure.IStructureElement.PlaceResult;
+import net.minecraft.entity.player.EntityPlayerMP;
+import net.minecraft.item.ItemStack;
+import net.minecraft.world.World;
+
+class SurvivalBuildStructureWalker<T> implements IStructureWalker<T> {
+    private final T object;
+    private final ItemStack trigger;
+    private final IItemSource source;
+    private final EntityPlayerMP actor;
+    private final int elementBudget;
+    private final boolean check;
+    private int built = -1;
+
+    public SurvivalBuildStructureWalker(
+            T object, ItemStack trigger, IItemSource source, EntityPlayerMP actor, int elementBudget, boolean check) {
+        this.object = object;
+        this.trigger = trigger;
+        this.source = source;
+        this.actor = actor;
+        this.elementBudget = elementBudget;
+        this.check = check;
+    }
+
+    @Override
+    public boolean visit(IStructureElement<T> element, World world, int x, int y, int z) {
+        PlaceResult placeResult = element.survivalPlaceBlock(
+                object, world, x, y, z, trigger, source, actor, actor::addChatComponentMessage);
+        if (placeResult != PlaceResult.SKIP && built == -1) built = 0;
+        switch (placeResult) {
+            case SKIP:
+                return true;
+            case ACCEPT:
+                if (check) element.check(object, world, x, y, z);
+                return ++built < elementBudget;
+            case REJECT:
+                if (ConstructableUtility.redBrokenOne)
+                    StructureLibAPI.updateHintParticleTint(actor, world, x, y, z, new short[] {255, 128, 128, 0});
+                return false;
+            case ACCEPT_STOP:
+                if (check) element.check(object, world, x, y, z);
+                built += 1;
+                // intentional fallthrough
+            case STOP:
+                return false;
+            default:
+                throw new NullPointerException();
+        }
+    }
+
+    public int getBuilt() {
+        return built;
+    }
+}

src/main/java/com/gtnewhorizon/structurelib/structure/adders/IBlockAdder.java

@@ -1,15 +1,14 @@
 package com.gtnewhorizon.structurelib.structure.adders;
 
-
 import net.minecraft.block.Block;
 
 public interface IBlockAdder<T> {
-	/**
-	 * Callback on block added, needs to check if block is valid (and add it)
-	 *
-	 * @param block block attempted to add
-	 * @param meta  meta of block attempted to add
-	 * @return is structure still valid
-	 */
-	boolean apply(T t, Block block, int meta);
+    /**
+     * Callback on block added, needs to check if block is valid (and add it)
+     *
+     * @param block block attempted to add
+     * @param meta  meta of block attempted to add
+     * @return is structure still valid
+     */
+    boolean apply(T t, Block block, int meta);
 }

src/main/java/com/gtnewhorizon/structurelib/structure/adders/ITileAdder.java

@@ -3,11 +3,11 @@ package com.gtnewhorizon.structurelib.structure.adders;
 import net.minecraft.tileentity.TileEntity;
 
 public interface ITileAdder<T> {
-	/**
-	 * Callback to add hatch, needs to check if tile is valid (and add it)
-	 *
-	 * @param tileEntity tile
-	 * @return managed to add hatch (structure still valid)
-	 */
-	boolean apply(T t, TileEntity tileEntity);
+    /**
+     * Callback to add hatch, needs to check if tile is valid (and add it)
+     *
+     * @param tileEntity tile
+     * @return managed to add hatch (structure still valid)
+     */
+    boolean apply(T t, TileEntity tileEntity);
 }

src/main/java/com/gtnewhorizon/structurelib/structure/package-info.java

@@ -0,0 +1,5 @@
+/**
+ * All public stuff in this package and its subpackages are considered part of the public API.
+ * Backwards compatibility is maintained to the maximum extend possible.
+ */
+package com.gtnewhorizon.structurelib.structure;

src/main/java/com/gtnewhorizon/structurelib/util/InventoryIterable.java

@@ -0,0 +1,47 @@
+package com.gtnewhorizon.structurelib.util;
+
+import java.util.Iterator;
+import java.util.NoSuchElementException;
+import net.minecraft.inventory.IInventory;
+import net.minecraft.item.ItemStack;
+
+public class InventoryIterable<Inv extends IInventory> implements Iterable<ItemStack> {
+    private final Inv inv;
+    private final int maxSlot;
+
+    public InventoryIterable(Inv inv) {
+        this(inv, -1);
+    }
+
+    InventoryIterable(Inv inv, int maxSlot) {
+        this.inv = inv;
+        this.maxSlot = maxSlot;
+    }
+
+    public Inv getInventory() {
+        return inv;
+    }
+
+    @Override
+    public Iterator<ItemStack> iterator() {
+        return new Iterator<ItemStack>() {
+            private int ptr = 0;
+
+            @Override
+            public boolean hasNext() {
+                return ptr < inv.getSizeInventory() && (maxSlot == -1 || ptr < maxSlot);
+            }
+
+            @Override
+            public ItemStack next() {
+                if (!hasNext()) throw new NoSuchElementException();
+                return inv.getStackInSlot(ptr++);
+            }
+
+            @Override
+            public void remove() {
+                inv.setInventorySlotContents(ptr - 1, null);
+            }
+        };
+    }
+}

src/main/java/com/gtnewhorizon/structurelib/util/InventoryUtility.java

@@ -0,0 +1,390 @@
+/**
+ * Copyright (c) 2022, glee8e
+ * This file is part of StructureLib.
+ * <p>
+ * StructureLib is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * <p>
+ * StructureLib is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ * <p>
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with Foobar; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+package com.gtnewhorizon.structurelib.util;
+
+import com.gtnewhorizon.structurelib.util.InventoryUtility.ItemStackExtractor.APIType;
+import com.gtnewhorizon.structurelib.util.ItemStackPredicate.NBTMode;
+import java.util.*;
+import java.util.concurrent.CopyOnWriteArrayList;
+import java.util.function.Function;
+import java.util.function.Predicate;
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
+import net.minecraft.entity.player.EntityPlayerMP;
+import net.minecraft.entity.player.InventoryPlayer;
+import net.minecraft.init.Items;
+import net.minecraft.inventory.IInventory;
+import net.minecraft.inventory.InventoryEnderChest;
+import net.minecraft.item.ItemStack;
+
+/**
+ * This class is part of API, but is not stable. Use at your own risk.
+ */
+public class InventoryUtility {
+    private static final SortedRegistry<ItemStackExtractor> stackExtractors = new SortedRegistry<>();
+    private static final List<Predicate<? super EntityPlayerMP>> enableEnder = new CopyOnWriteArrayList<>();
+    /**
+     * The remove() of the Iterable returned must be implemented!
+     */
+    private static final SortedRegistry<InventoryProvider<?>> inventoryProviders = new SortedRegistry<>();
+
+    static {
+        inventoryProviders.register("5000-main-inventory", new InventoryProvider<InventoryIterable<InventoryPlayer>>() {
+            @Override
+            public InventoryIterable<InventoryPlayer> getInventory(EntityPlayerMP player) {
+                return new InventoryIterable<>(player.inventory, player.inventory.mainInventory.length);
+            }
+
+            @Override
+            public void markDirty(InventoryIterable<InventoryPlayer> inv) {
+                // player save its content using means other than inv.markDirty()
+                // here we only need to sync it to client
+                inv.getInventory().player.inventoryContainer.detectAndSendChanges();
+            }
+        });
+        inventoryProviders.register(
+                "7000-ender-inventory", new InventoryProvider<InventoryIterable<InventoryEnderChest>>() {
+                    @Override
+                    public InventoryIterable<InventoryEnderChest> getInventory(EntityPlayerMP player) {
+                        if (enableEnder.stream().anyMatch(p -> p.test(player)))
+                            return new InventoryIterable<>(player.getInventoryEnderChest());
+                        return null;
+                    }
+
+                    @Override
+                    public void markDirty(InventoryIterable<InventoryEnderChest> inv) {
+                        // inv.getInventory().markDirty();
+                        // TODO this seems to be a noop
+                    }
+                });
+    }
+
+    public static void registerEnableEnderCondition(Predicate<? super EntityPlayerMP> predicate) {
+        enableEnder.add(predicate);
+    }
+
+    public static void registerStackExtractor(String key, ItemStackExtractor val) {
+        if (Arrays.stream(APIType.values()).noneMatch(val::isAPIImplemented))
+            throw new IllegalArgumentException("Must implement at least one API");
+        stackExtractors.register(key, val);
+    }
+
+    public static <Inv extends IInventory> void registerStackExtractor(
+            String key, Function<ItemStack, ? extends Inv> extractor) {
+        registerStackExtractor(key, newItemStackProvider(extractor));
+    }
+
+    public static void registerInventoryProvider(String key, InventoryProvider<?> val) {
+        inventoryProviders.register(key, val);
+    }
+
+    public static <Inv extends IInventory> void registerInventoryProvider(
+            String key, Function<EntityPlayerMP, ? extends Inv> extractor) {
+        registerInventoryProvider(key, newInventoryProvider(extractor));
+    }
+
+    public static Iterator<? extends ItemStackExtractor> getStackExtractors() {
+        return stackExtractors.iterator();
+    }
+
+    public static <Inv extends IInventory> InventoryProvider<InventoryIterable<Inv>> newInventoryProvider(
+            Function<EntityPlayerMP, ? extends Inv> extractor) {
+        return new InventoryProvider<InventoryIterable<Inv>>() {
+            @Override
+            public InventoryIterable<Inv> getInventory(EntityPlayerMP player) {
+                Inv inv = extractor.apply(player);
+                return inv != null ? new InventoryIterable<>(inv) : null;
+            }
+
+            @Override
+            public void markDirty(InventoryIterable<Inv> inv) {
+                inv.getInventory().markDirty();
+            }
+        };
+    }
+
+    public static ItemStackExtractor newItemStackProvider(Function<ItemStack, ? extends IInventory> extractor) {
+        return new ItemStackExtractor() {
+            @Override
+            public boolean isAPIImplemented(APIType type) {
+                return type == APIType.MAIN;
+            }
+
+            @Override
+            public int takeFromStack(
+                    Predicate<ItemStack> predicate,
+                    boolean simulate,
+                    int count,
+                    ItemStackCounter store,
+                    ItemStack stack,
+                    ItemStack filter,
+                    EntityPlayerMP player) {
+                IInventory inv = extractor.apply(stack);
+                if (inv == null) return 0;
+                int found = takeFromInventory(
+                        new InventoryIterable<>(inv), predicate, simulate, count, store, filter, player, false);
+                if (found > 0) inv.markDirty();
+                return found;
+            }
+        };
+    }
+
+    /**
+     * take count amount of stacks that matches given filter. might take partial amount of stuff, so simulation is suggested
+     * if you ever need to take more than one.
+     *
+     * @param player    source of stacks
+     * @param predicate item stack filter
+     * @param simulate  whether to do removal
+     * @param count     let's hope int size is enough...
+     * @return amount taken. never negative nor bigger than count...
+     */
+    public static Map<ItemStack, Integer> takeFromInventory(
+            EntityPlayerMP player, Predicate<ItemStack> predicate, boolean simulate, int count) {
+        ItemStackCounterImpl store = new ItemStackCounterImpl();
+        int sum = 0;
+        for (InventoryProvider<?> provider : inventoryProviders) {
+            sum += takeFromPlayer(player, predicate, simulate, count - sum, store, provider, null);
+            if (sum >= count) return store.getStore();
+        }
+        return store.getStore();
+    }
+
+    /**
+     * take count amount of stacks that matches given filter. might take partial amount of stuff, so simulation is suggested
+     * if you ever need to take more than one.
+     *
+     * @param player   source of stacks
+     * @param filter   the precise type of item to extract. stackSize matters
+     * @param simulate whether to do removal
+     * @return amount taken. never negative nor bigger than count...
+     */
+    public static int takeFromInventory(EntityPlayerMP player, ItemStack filter, boolean simulate) {
+        int sum = 0;
+        int count = filter.stackSize;
+        ItemStackPredicate predicate = ItemStackPredicate.from(filter, NBTMode.EXACT);
+        ItemStackCounterImpl store = new ItemStackCounterImpl();
+        for (InventoryProvider<?> provider : inventoryProviders) {
+            sum += takeFromPlayer(player, predicate, simulate, count - sum, store, provider, filter);
+            if (sum >= count) return sum;
+        }
+        return sum;
+    }
+
+    // workaround java generics issue
+    private static <R extends Iterable<ItemStack>> int takeFromPlayer(
+            EntityPlayerMP player,
+            Predicate<ItemStack> predicate,
+            boolean simulate,
+            int count,
+            ItemStackCounterImpl store,
+            InventoryProvider<R> provider,
+            ItemStack filter) {
+        R inv = provider.getInventory(player);
+        if (inv == null) return 0;
+        int taken = takeFromInventory(inv, predicate, simulate, count, store, filter, player, true);
+        if (taken > 0) provider.markDirty(inv);
+        return taken;
+    }
+
+    /**
+     * take count amount of stacks that matches given filter. Will do 1 level of recursion to try find more stacks....
+     * e.g. from backpacks...
+     *
+     * @param inv       source of stacks
+     * @param predicate item stack filter
+     * @param simulate  whether to do removal
+     * @param count     let's hope int size is enough...
+     * @param recursive do recursive lookup using {@link #getStackExtractors() stack extractors}
+     * @return amount taken. never negative nor bigger than count...
+     */
+    public static Map<ItemStack, Integer> takeFromInventory(
+            Iterable<ItemStack> inv, Predicate<ItemStack> predicate, boolean simulate, int count, boolean recursive) {
+        ItemStackCounterImpl store = new ItemStackCounterImpl();
+        takeFromInventory(inv, predicate, simulate, count, store, null, null, recursive);
+        return store.getStore();
+    }
+
+    private static int takeFromInventory(
+            @Nonnull Iterable<ItemStack> inv,
+            @Nonnull Predicate<ItemStack> predicate,
+            boolean simulate,
+            int count,
+            @Nonnull ItemStackCounter store,
+            @Nullable ItemStack filter,
+            @Nullable EntityPlayerMP player,
+            boolean recursive) {
+        int found = 0;
+        ItemStack copiedFilter = null;
+        if (filter != null) {
+            copiedFilter = new ItemStack(filter.getItem(), filter.stackSize, Items.feather.getDamage(filter));
+            copiedFilter.setTagCompound(filter.stackTagCompound);
+        }
+        for (Iterator<ItemStack> iterator = inv.iterator(); iterator.hasNext(); ) {
+            ItemStack stack = iterator.next();
+            // invalid stack
+            if (stack == null || stack.getItem() == null || stack.stackSize <= 0) continue;
+
+            if (predicate.test(stack)) {
+                found += stack.stackSize;
+                if (found > count) {
+                    int surplus = found - count;
+                    store.add(stack, stack.stackSize - surplus);
+                    if (!simulate) {
+                        // leave the surplus in its place
+                        stack.stackSize = surplus;
+                    }
+                    return count;
+                }
+                store.add(stack, stack.stackSize);
+                if (!simulate) iterator.remove();
+                if (found == count) return count;
+            }
+            if (!recursive) continue;
+            for (ItemStackExtractor f : stackExtractors) {
+                if (filter != null && f.isAPIImplemented(APIType.EXTRACT_ONE_STACK)) {
+                    copiedFilter.stackSize = count - found;
+                    found += f.getItem(stack, copiedFilter, simulate, player);
+                } else {
+                    found += f.takeFromStack(predicate, simulate, count - found, store, stack, filter, player);
+                }
+                if (found >= count) return found;
+            }
+        }
+        return found;
+    }
+
+    public interface OptimizedExtractor {
+        /**
+         * Extract a particular type of item. The extractor can choose to not return all items contained within this item
+         * as long as it makes sense, but the author should inform the player of this.
+         * <p>
+         * Whether optimized extractor do recursive extraction is at the discretion of implementor.
+         *
+         * @param source    from where an extraction should be attempted
+         * @param toExtract stack to extract. should not be mutated! match the NBT tag using EXACT mode.
+         * @param simulate  true if only query but does not actually remove
+         * @param player    executor of extraction, or null if from a machine
+         * @return amount extracted
+         */
+        int extract(ItemStack source, ItemStack toExtract, boolean simulate, EntityPlayerMP player);
+    }
+
+    public interface InventoryProvider<R extends Iterable<ItemStack>> {
+        R getInventory(EntityPlayerMP player);
+
+        void markDirty(R inv);
+    }
+
+    public interface ItemStackExtractor {
+        enum APIType {
+            MAIN,
+            EXTRACT_ONE_STACK,
+        }
+
+        boolean isAPIImplemented(APIType type);
+
+        /**
+         * Extract a particular type of item. The extractor can choose to not return all items contained within this item
+         * as long as it makes sense, but the author should inform the player of this.
+         * <p>
+         * Whether this method does recursive extraction is at the discretion of implementor.
+         *
+         * @param predicate the main filtering predicate. never null. It's assumed predicate always returns true on filter,
+         *                  if that is not null
+         * @param store     where to store extracted items. Should increment the
+         * @param source    from where an extraction should be attempted
+         * @param filter    stack to extract. should not be mutated! match the NBT tag using EXACT mode. might be null.
+         * @param simulate  true if only query but does not actually remove
+         * @param player    executor of extraction, or null if from a machine
+         * @return amount extracted, or -1 if this is not implemented
+         */
+        int takeFromStack(
+                Predicate<ItemStack> predicate,
+                boolean simulate,
+                int count,
+                ItemStackCounter store,
+                ItemStack source,
+                ItemStack filter,
+                EntityPlayerMP player);
+
+        /**
+         * Extract a particular type of item. The extractor can choose to not return all items contained within this item
+         * as long as it makes sense, but the author should inform the player of this.
+         * <p>
+         * Whether this method does recursive extraction is at the discretion of implementor.
+         *
+         * @param source    from where an extraction should be attempted
+         * @param toExtract stack to extract. should not be mutated! match the NBT tag using EXACT mode.
+         * @param simulate  true if only query but does not actually remove
+         * @param player    executor of extraction, or null if from a machine
+         * @return amount extracted, or -1 if this is not implemented
+         */
+        default int getItem(ItemStack source, ItemStack toExtract, boolean simulate, EntityPlayerMP player) {
+            return -1;
+        }
+
+        static ItemStackExtractor createOnlyOptimized(@Nonnull OptimizedExtractor optimizedExtractor) {
+            return new ItemStackExtractor() {
+                @Override
+                public boolean isAPIImplemented(APIType type) {
+                    return type == APIType.EXTRACT_ONE_STACK;
+                }
+
+                @Override
+                public int takeFromStack(
+                        Predicate<ItemStack> predicate,
+                        boolean simulate,
+                        int count,
+                        ItemStackCounter store,
+                        ItemStack stack,
+                        ItemStack filter,
+                        EntityPlayerMP player) {
+                    return 0;
+                }
+
+                @Override
+                public int getItem(ItemStack source, ItemStack toExtract, boolean simulate, EntityPlayerMP player) {
+                    return optimizedExtractor.extract(source, toExtract, simulate, player);
+                }
+            };
+        }
+    }
+
+    public interface ItemStackCounter {
+        /**
+         * Add some amount of stack. Note stackSize is used instead of stack.stackSize.
+         */
+        void add(ItemStack stack, int stackSize);
+    }
+
+    private static class ItemStackCounterImpl implements ItemStackCounter {
+        private final Map<ItemStack, Integer> store = new ItemStackMap<>();
+
+        @Override
+        public void add(ItemStack stack, int stackSize) {
+            if (stack == null || stack.getItem() == null || stackSize <= 0) throw new IllegalArgumentException();
+            store.merge(stack, stackSize, Integer::sum);
+        }
+
+        public Map<ItemStack, Integer> getStore() {
+            return store;
+        }
+    }
+}

src/main/java/com/gtnewhorizon/structurelib/util/ItemStackArrayIterable.java

@@ -0,0 +1,38 @@
+package com.gtnewhorizon.structurelib.util;
+
+import java.util.Iterator;
+import net.minecraft.item.ItemStack;
+
+public class ItemStackArrayIterable implements Iterable<ItemStack> {
+    private final ItemStack[] stacks;
+
+    public ItemStackArrayIterable(ItemStack[] stacks) {
+        this.stacks = stacks;
+    }
+
+    public ItemStack[] getStacks() {
+        return stacks;
+    }
+
+    @Override
+    public Iterator<ItemStack> iterator() {
+        return new Iterator<ItemStack>() {
+            private int ptr = 0;
+
+            @Override
+            public boolean hasNext() {
+                return ptr < stacks.length;
+            }
+
+            @Override
+            public ItemStack next() {
+                return stacks[ptr++];
+            }
+
+            @Override
+            public void remove() {
+                stacks[ptr - 1] = null;
+            }
+        };
+    }
+}

src/main/java/com/gtnewhorizon/structurelib/util/ItemStackMap.java

@@ -0,0 +1,464 @@
+/*
+ * Copyright (c) 2021, glee8e, Code Chicken.
+ *
+ * This file is originally part of NotEnoughtItem by Code Chicken.
+ * It is adapted to implement the standard Map interface by glease
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 2.1 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package com.gtnewhorizon.structurelib.util;
+
+import static net.minecraftforge.oredict.OreDictionary.WILDCARD_VALUE;
+
+import com.google.common.base.Objects;
+import com.google.common.collect.Iterators;
+import java.util.AbstractMap;
+import java.util.AbstractSet;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.Map;
+import java.util.NoSuchElementException;
+import java.util.Set;
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
+import net.minecraft.init.Items;
+import net.minecraft.item.Item;
+import net.minecraft.item.ItemStack;
+import net.minecraft.nbt.NBTTagCompound;
+
+/**
+ * A map class for ItemStack keys with wildcard damage/NBT. Optimised for lookup.
+ * <p>
+ * This map does NOT support null values or null keys! null will be silently ignored!
+ * <p>
+ * Originally created by CodeChicken for NotEnoughItems. Adapted to {@code Map<ItemStack, T>} interface by glee8e
+ * @author CodeChiken
+ * @author glee8e
+ */
+public final class ItemStackMap<T> extends AbstractMap<ItemStack, T> {
+    public static final NBTTagCompound WILDCARD_TAG;
+
+    static {
+        WILDCARD_TAG = new NBTTagCompound();
+        WILDCARD_TAG.setBoolean("*", true);
+    }
+
+    private final HashMap<Item, DetailMap> itemMap = new HashMap<>();
+    private int size;
+
+    static ItemStack newItemStack(Item item, int size, int damage, NBTTagCompound tag) {
+        ItemStack stack = new ItemStack(item, size, damage);
+        stack.stackTagCompound = tag;
+        return stack;
+    }
+
+    static int actualDamage(ItemStack stack) {
+        return Items.diamond.getDamage(stack);
+    }
+
+    static int getKeyType(int damage, NBTTagCompound tag) {
+        int i = 0;
+        if (isWildcard(damage)) i = 1;
+        if (isWildcard(tag)) i |= 2;
+        return i;
+    }
+
+    static ItemStack wildcard(Item item) {
+        return newItemStack(item, 1, WILDCARD_VALUE, WILDCARD_TAG);
+    }
+
+    static boolean isWildcard(int damage) {
+        return damage == WILDCARD_VALUE;
+    }
+
+    static boolean isWildcard(NBTTagCompound tag) {
+        return tag != null && tag.getBoolean("*");
+    }
+
+    @Override
+    public T get(Object key) {
+        if (!(key instanceof ItemStack)) return null;
+        ItemStack stack = ((ItemStack) key);
+        if (stack.getItem() == null) return null;
+        DetailMap map = itemMap.get(stack.getItem());
+        return map == null ? null : map.get(stack);
+    }
+
+    @Override
+    public T put(ItemStack key, T value) {
+        if (key == null || key.getItem() == null || value == null) return null;
+        return itemMap.computeIfAbsent(key.getItem(), k -> new DetailMap()).put(key, value);
+    }
+
+    @Override
+    public T remove(Object key) {
+        if (!(key instanceof ItemStack)) return null;
+        ItemStack stack = ((ItemStack) key);
+        if (stack.getItem() == null) return null;
+        DetailMap map = itemMap.get(stack.getItem());
+        return map == null ? null : map.remove(stack);
+    }
+
+    @Override
+    public boolean containsKey(Object key) {
+        if (!(key instanceof ItemStack)) return false;
+        ItemStack stack = ((ItemStack) key);
+        if (stack.getItem() == null) return false;
+        DetailMap map = itemMap.get(stack.getItem());
+        return map != null && map.get(stack) != null;
+    }
+
+    @Override
+    public void clear() {
+        itemMap.clear();
+        size = 0;
+    }
+
+    @Override
+    public Set<Map.Entry<ItemStack, T>> entrySet() {
+        return new SetView();
+    }
+
+    private static class StackMetaKey {
+        public final int damage;
+        public final NBTTagCompound tag;
+
+        public StackMetaKey(int damage, NBTTagCompound tag) {
+            this.damage = damage;
+            this.tag = tag;
+        }
+
+        public StackMetaKey(ItemStack key) {
+            this(actualDamage(key), key.stackTagCompound);
+        }
+
+        public int hashCode() {
+            return Objects.hashCode(damage, tag);
+        }
+
+        public boolean equals(Object o) {
+            if (!(o instanceof StackMetaKey)) return false;
+            StackMetaKey t = (StackMetaKey) o;
+            return damage == t.damage && Objects.equal(tag, t.tag);
+        }
+    }
+
+    private static class DetailIter<T> implements Iterator<Map.Entry<ItemStack, T>> {
+        private final Item owner;
+        private final ItemStackMap<T>.DetailMap backing;
+
+        @Nullable
+        private final Iterator<Map.Entry<Integer, T>> damageIter;
+
+        @Nullable
+        private final Iterator<Map.Entry<NBTTagCompound, T>> tagIter;
+
+        @Nullable
+        private final Iterator<Map.Entry<StackMetaKey, T>> metaIter;
+
+        private DetailIterState state = DetailIterState.NOT_STARTED;
+        private boolean removed = false;
+
+        private DetailIter(Map.Entry<Item, ItemStackMap<T>.DetailMap> input) {
+            this.owner = input.getKey();
+            this.backing = input.getValue();
+            damageIter =
+                    backing.damageMap != null ? backing.damageMap.entrySet().iterator() : null;
+            tagIter = backing.tagMap != null ? backing.tagMap.entrySet().iterator() : null;
+            metaIter = backing.metaMap != null ? backing.metaMap.entrySet().iterator() : null;
+        }
+
+        private DetailIterState nextState() {
+            switch (state) {
+                case NOT_STARTED:
+                    if (backing.hasWildcard) return DetailIterState.WILDCARD;
+                case WILDCARD:
+                case DAMAGE:
+                    if (damageIter != null && damageIter.hasNext()) return DetailIterState.DAMAGE;
+                case TAG:
+                    if (tagIter != null && tagIter.hasNext()) return DetailIterState.TAG;
+                case META:
+                    if (metaIter != null && metaIter.hasNext()) return DetailIterState.META;
+                case DONE:
+                    return DetailIterState.DONE;
+                default:
+                    throw new IllegalStateException("Unexpected value: " + state);
+            }
+        }
+
+        @Override
+        public void remove() {
+            if (removed) throw new IllegalStateException("remove() called twice");
+            state.remove(this);
+            removed = true;
+        }
+
+        @Override
+        public boolean hasNext() {
+            return nextState() != DetailIterState.DONE;
+        }
+
+        @Override
+        public Map.Entry<ItemStack, T> next() {
+            DetailIterState nextState = nextState();
+            if (nextState == DetailIterState.DONE) throw new NoSuchElementException();
+            state = nextState;
+            removed = false;
+            return nextState.get(this);
+        }
+
+        private enum DetailIterState {
+            NOT_STARTED {
+                @Override
+                <T> Map.Entry<ItemStack, T> get(DetailIter<T> iter) {
+                    throw new AssertionError("Should not call get on NOT_STARTED");
+                }
+
+                @Override
+                <T> void remove(DetailIter<T> iter) {
+                    throw new IllegalStateException("next() never called");
+                }
+            },
+            WILDCARD {
+                @Override
+                <T> Map.Entry<ItemStack, T> get(DetailIter<T> iter) {
+                    return new Map.Entry<ItemStack, T>() {
+                        private final ItemStack key = wildcard(iter.owner);
+
+                        @Override
+                        public ItemStack getKey() {
+                            return key;
+                        }
+
+                        @Override
+                        public T getValue() {
+                            return iter.backing.wildcard;
+                        }
+
+                        @Override
+                        public T setValue(T value) {
+                            return iter.backing.wildcard = value;
+                        }
+                    };
+                }
+
+                @Override
+                <T> void remove(DetailIter<T> iter) {
+                    assert iter.backing.hasWildcard;
+                    iter.backing.wildcard = null;
+                    iter.backing.hasWildcard = false;
+                }
+            },
+            DAMAGE {
+                @Override
+                <T> Map.Entry<ItemStack, T> get(DetailIter<T> iter) {
+                    assert iter.damageIter != null;
+                    Map.Entry<Integer, T> entry = iter.damageIter.next();
+                    return new ItemStackEntry<>(newItemStack(iter.owner, 1, entry.getKey(), WILDCARD_TAG), entry);
+                }
+
+                @Override
+                <T> void remove(DetailIter<T> iter) {
+                    assert iter.damageIter != null;
+                    iter.damageIter.remove();
+                }
+            },
+            TAG {
+                @Override
+                <T> Map.Entry<ItemStack, T> get(DetailIter<T> iter) {
+                    assert iter.tagIter != null;
+                    Map.Entry<NBTTagCompound, T> entry = iter.tagIter.next();
+                    return new ItemStackEntry<>(newItemStack(iter.owner, 1, WILDCARD_VALUE, entry.getKey()), entry);
+                }
+
+                @Override
+                <T> void remove(DetailIter<T> iter) {
+                    assert iter.tagIter != null;
+                    iter.tagIter.remove();
+                }
+            },
+            META {
+                @Override
+                <T> Map.Entry<ItemStack, T> get(DetailIter<T> iter) {
+                    assert iter.metaIter != null;
+                    Map.Entry<StackMetaKey, T> entry = iter.metaIter.next();
+                    return new ItemStackEntry<>(
+                            newItemStack(iter.owner, 1, entry.getKey().damage, entry.getKey().tag), entry);
+                }
+
+                @Override
+                <T> void remove(DetailIter<T> iter) {
+                    assert iter.metaIter != null;
+                    iter.metaIter.remove();
+                }
+            },
+            DONE {
+                @Override
+                <T> Map.Entry<ItemStack, T> get(DetailIter<T> iter) {
+                    throw new AssertionError("Should not call get on DONE");
+                }
+
+                @Override
+                <T> void remove(DetailIter<T> iter) {
+                    throw new AssertionError("Should not call remove on DONE");
+                }
+            };
+
+            abstract <T> Map.Entry<ItemStack, T> get(DetailIter<T> iter);
+
+            abstract <T> void remove(DetailIter<T> iter);
+
+            private static class ItemStackEntry<T> implements Map.Entry<ItemStack, T> {
+                private final ItemStack key;
+                private final Map.Entry<?, T> entry;
+
+                public ItemStackEntry(ItemStack key, Map.Entry<?, T> entry) {
+                    this.key = key;
+                    this.entry = entry;
+                }
+
+                @Override
+                public ItemStack getKey() {
+                    return key;
+                }
+
+                @Override
+                public T getValue() {
+                    return entry.getValue();
+                }
+
+                @Override
+                public T setValue(T value) {
+                    return entry.setValue(value);
+                }
+            }
+        }
+    }
+
+    private class DetailMap {
+        private boolean hasWildcard;
+        private T wildcard;
+        private HashMap<Integer, T> damageMap;
+        private HashMap<NBTTagCompound, T> tagMap;
+        private HashMap<StackMetaKey, T> metaMap;
+        private int size;
+
+        public T get(ItemStack key) {
+            if (wildcard != null) return wildcard;
+
+            if (damageMap != null) {
+                final T ret = damageMap.get(actualDamage(key));
+                if (ret != null) return ret;
+            }
+            if (tagMap != null) {
+                final T ret = tagMap.get(key.stackTagCompound);
+                if (ret != null) return ret;
+            }
+            if (metaMap != null) return metaMap.get(new StackMetaKey(key));
+
+            return null;
+        }
+
+        public T put(ItemStack key, T value) {
+            try {
+                switch (getKeyType(actualDamage(key), key.stackTagCompound)) {
+                    case 0:
+                        if (metaMap == null) metaMap = new HashMap<>();
+                        return metaMap.put(new StackMetaKey(key), value);
+                    case 1:
+                        if (tagMap == null) tagMap = new HashMap<>();
+                        return tagMap.put(key.stackTagCompound, value);
+                    case 2:
+                        if (damageMap == null) damageMap = new HashMap<>();
+                        return damageMap.put(actualDamage(key), value);
+                    case 3:
+                        T ret = wildcard;
+                        wildcard = value;
+                        hasWildcard = true;
+                        return ret;
+                }
+            } finally {
+                updateSize();
+            }
+            return null;
+        }
+
+        public T remove(ItemStack key) {
+            try {
+                switch (getKeyType(actualDamage(key), key.stackTagCompound)) {
+                    case 0:
+                        return metaMap != null ? metaMap.remove(new StackMetaKey(key)) : null;
+                    case 1:
+                        return tagMap != null ? tagMap.remove(key.stackTagCompound) : null;
+                    case 2:
+                        return damageMap != null ? damageMap.remove(actualDamage(key)) : null;
+                    case 3:
+                        T ret = wildcard;
+                        wildcard = null;
+                        hasWildcard = false;
+                        return ret;
+                }
+            } finally {
+                updateSize();
+            }
+            return null;
+        }
+
+        private void updateSize() {
+            int newSize = (hasWildcard ? 1 : 0)
+                    + (metaMap != null ? metaMap.size() : 0)
+                    + (tagMap != null ? tagMap.size() : 0)
+                    + (damageMap != null ? damageMap.size() : 0);
+
+            if (newSize != size) {
+                ItemStackMap.this.size += newSize - size;
+                size = newSize;
+            }
+        }
+    }
+
+    private class SetView extends AbstractSet<Map.Entry<ItemStack, T>> {
+        @Override
+        public boolean contains(Object o) {
+            if (!(o instanceof Map.Entry)) return false;
+            Map.Entry<?, ?> entry = (Map.Entry<?, ?>) o;
+            return java.util.Objects.equals(get(entry.getKey()), entry.getValue());
+        }
+
+        @Override
+        public boolean add(Map.Entry<ItemStack, T> itemStackTEntry) {
+            return itemStackTEntry.getKey() != null
+                    && itemStackTEntry.getValue() != null
+                    && put(itemStackTEntry.getKey(), itemStackTEntry.getValue()) == null;
+        }
+
+        @Override
+        public boolean remove(Object o) {
+            if (!(o instanceof Map.Entry)) return false;
+            Map.Entry<?, ?> entry = (Map.Entry<?, ?>) o;
+            return ItemStackMap.this.remove(entry.getKey(), entry.getValue());
+        }
+
+        @Nonnull
+        @Override
+        public Iterator<Map.Entry<ItemStack, T>> iterator() {
+            return Iterators.concat(Iterators.transform(itemMap.entrySet().iterator(), DetailIter::new));
+        }
+
+        @Override
+        public int size() {
+            return size;
+        }
+    }
+}

src/main/java/com/gtnewhorizon/structurelib/util/ItemStackPredicate.java

@@ -0,0 +1,112 @@
+package com.gtnewhorizon.structurelib.util;
+
+import java.util.Objects;
+import java.util.function.BiPredicate;
+import java.util.function.Predicate;
+import net.minecraft.block.Block;
+import net.minecraft.init.Items;
+import net.minecraft.item.Item;
+import net.minecraft.item.ItemStack;
+import net.minecraft.nbt.NBTBase;
+import net.minecraft.nbt.NBTTagCompound;
+
+public final class ItemStackPredicate implements Predicate<ItemStack> {
+    public static ItemStackPredicate from(Item item) {
+        return new ItemStackPredicate(item);
+    }
+
+    public static ItemStackPredicate from(ItemStack itemStack) {
+        return new ItemStackPredicate(itemStack.getItem()).setMeta(Items.feather.getDamage(itemStack));
+    }
+
+    public static ItemStackPredicate from(ItemStack itemStack, NBTMode mode) {
+        return new ItemStackPredicate(itemStack.getItem())
+                .setMeta(Items.feather.getDamage(itemStack))
+                .setTag(mode, itemStack.stackTagCompound);
+    }
+
+    public static ItemStackPredicate from(Block block) {
+        return new ItemStackPredicate(Item.getItemFromBlock(block));
+    }
+
+    private final Item item;
+    private int meta = -1;
+
+    private NBTTagCompound tag;
+    private NBTMode mode = NBTMode.IGNORE;
+
+    private ItemStackPredicate(Item item) {
+        this.item = item;
+    }
+
+    public ItemStackPredicate ignoreMeta() {
+        this.meta = -1;
+        return this;
+    }
+
+    public ItemStackPredicate setMeta(int meta) {
+        this.meta = meta;
+        return this;
+    }
+
+    public ItemStackPredicate setTag(NBTMode mode, NBTTagCompound tag) {
+        this.mode = mode;
+        this.tag = tag;
+        return this;
+    }
+
+    @Override
+    public boolean test(ItemStack itemStack) {
+        if (item != null) if (itemStack.getItem() != item) return false;
+        if (meta != -1) if (Items.feather.getDamage(itemStack) != meta) return false;
+        return mode.test(tag, itemStack.stackTagCompound);
+    }
+
+    public enum NBTMode implements BiPredicate<NBTTagCompound, NBTTagCompound> {
+        IGNORE {
+            @Override
+            public boolean test(NBTTagCompound lhs, NBTTagCompound rhs) {
+                return true;
+            }
+        },
+        IN {
+            @Override
+            public boolean test(NBTTagCompound lhs, NBTTagCompound rhs) {
+                if (lhs == null || lhs.hasNoTags()) return true;
+                if (rhs == null || rhs.hasNoTags()) return false;
+                for (String key : MiscUtils.getTagKeys(lhs)) {
+                    if (!rhs.hasKey(key, lhs.func_150299_b(key))) return false;
+                    NBTBase tag = lhs.getTag(key);
+                    if (tag instanceof NBTTagCompound) {
+                        if (!test((NBTTagCompound) tag, rhs.getCompoundTag(key))) return false;
+                    } else {
+                        if (!tag.equals(rhs.getTag(key))) return false;
+                    }
+                }
+                return true;
+            }
+        },
+        EXACT {
+            @Override
+            public boolean test(NBTTagCompound lhs, NBTTagCompound rhs) {
+                if (lhs != null && lhs.hasNoTags()) lhs = null;
+                if (rhs != null && rhs.hasNoTags()) rhs = null;
+                return Objects.equals(lhs, rhs);
+            }
+        },
+        IGNORE_KNOWN_INSIGNIFICANT_TAGS {
+            @Override
+            public boolean test(NBTTagCompound lhs, NBTTagCompound rhs) {
+                // fast path for empty tags
+                if (rhs == null || rhs.hasNoTags()) return lhs == null || lhs.hasNoTags();
+                // TODO make an implementation without copying a potentially huge tag
+                rhs = (NBTTagCompound) rhs.copy();
+                for (String s : KNOWN_INSIGNIFICANT_TAGS) rhs.removeTag(s);
+                return EXACT.test(lhs, rhs);
+            }
+        };
+        private static final String[] KNOWN_INSIGNIFICANT_TAGS = {
+            "display", // TODO expand/refine this
+        };
+    }
+}

src/main/java/com/gtnewhorizon/structurelib/util/MiscUtils.java

@@ -0,0 +1,16 @@
+package com.gtnewhorizon.structurelib.util;
+
+import java.util.Set;
+import net.minecraft.nbt.NBTTagCompound;
+
+/**
+ * not related to a certain mod!
+ */
+public class MiscUtils {
+    private MiscUtils() {}
+
+    @SuppressWarnings("unchecked")
+    public static Set<String> getTagKeys(NBTTagCompound tag) {
+        return tag.func_150296_c();
+    }
+}

src/main/java/com/gtnewhorizon/structurelib/util/SortedRegistry.java

@@ -0,0 +1,57 @@
+package com.gtnewhorizon.structurelib.util;
+
+import java.util.*;
+import java.util.function.Consumer;
+
+public class SortedRegistry<V> implements Iterable<V> {
+    private final NavigableMap<String, V> store = new TreeMap<>();
+    /**
+     * Store stuff in an array for faster iteration access than a red black tree
+     */
+    private List<V> baked = Collections.emptyList();
+
+    public void register(String key, V val) {
+        if (key == null || val == null) throw new NullPointerException();
+        V old = store.putIfAbsent(key, val);
+        if (old != null) {
+            throw new IllegalArgumentException("Duplicate key: " + key);
+        }
+        // TODO allow a user to edit the order with a configuration file
+        baked = new ArrayList<>(store.values());
+    }
+
+    public int size() {
+        return store.size();
+    }
+
+    public boolean isEmpty() {
+        return store.isEmpty();
+    }
+
+    public boolean containsKey(String key) {
+        return store.containsKey(key);
+    }
+
+    public boolean containsValue(V value) {
+        return store.containsValue(value);
+    }
+
+    public V get(String key) {
+        return store.get(key);
+    }
+
+    @Override
+    public Iterator<V> iterator() {
+        return baked.iterator();
+    }
+
+    @Override
+    public void forEach(Consumer<? super V> action) {
+        baked.forEach(action);
+    }
+
+    @Override
+    public Spliterator<V> spliterator() {
+        return baked.spliterator();
+    }
+}

src/main/java/com/gtnewhorizon/structurelib/util/Vec3Impl.java

@@ -23,11 +23,15 @@ public class Vec3Impl implements Comparable<Vec3Impl> {
      * Gets the coordinate.
      */
     public int get(int index) {
-        switch (index){
-            case 0: return val0;
-            case 1: return val1;
-            case 2: return val2;
-            default: return 0;
+        switch (index) {
+            case 0:
+                return val0;
+            case 1:
+                return val1;
+            case 2:
+                return val2;
+            default:
+                return 0;
         }
     }
 
@@ -53,7 +57,9 @@ public class Vec3Impl implements Comparable<Vec3Impl> {
     }
 
     public Vec3Impl offset(ForgeDirection facing, int n) {
-        return n == 0 ? this : new Vec3Impl(val0 + facing.offsetX * n, val1 + facing.offsetY * n, val2 + facing.offsetZ * n);
+        return n == 0
+                ? this
+                : new Vec3Impl(val0 + facing.offsetX * n, val1 + facing.offsetY * n, val2 + facing.offsetZ * n);
     }
 
     public Vec3Impl add(Vec3Impl pos) {
@@ -64,16 +70,18 @@ public class Vec3Impl implements Comparable<Vec3Impl> {
         return new Vec3Impl(val0 - pos.val0, val1 - pos.val1, val2 - pos.val2);
     }
 
-    public Vec3Impl add(int pos0,int pos1,int pos2) {
+    public Vec3Impl add(int pos0, int pos1, int pos2) {
         return new Vec3Impl(val0 + pos0, val1 + pos1, val2 + pos2);
     }
 
-    public Vec3Impl sub(int pos0,int pos1,int pos2) {
+    public Vec3Impl sub(int pos0, int pos1, int pos2) {
         return new Vec3Impl(val0 - pos0, val1 - pos1, val2 - pos2);
     }
 
     public Vec3Impl crossProduct(Vec3Impl vec) {
-        return new Vec3Impl(val1 * vec.val2 - val2 * vec.val1, val2 * vec.val0 - val0 * vec.val2,
+        return new Vec3Impl(
+                val1 * vec.val2 - val2 * vec.val1,
+                val2 * vec.val0 - val0 * vec.val2,
                 val0 * vec.val1 - val1 * vec.val0);
     }
 
@@ -95,17 +103,17 @@ public class Vec3Impl implements Comparable<Vec3Impl> {
 
     public double distanceSq(double x, double y, double z, boolean useCenter) {
         double d0 = useCenter ? 0.5D : 0.0D;
-        double d1 = (double)val0 + d0 - x;
-        double d2 = (double)val1 + d0 - y;
-        double d3 = (double)val2 + d0 - z;
+        double d1 = (double) val0 + d0 - x;
+        double d2 = (double) val1 + d0 - y;
+        double d3 = (double) val2 + d0 - z;
         return d1 * d1 + d2 * d2 + d3 * d3;
     }
 
     public int manhattanDistance(Vec3Impl to) {
-        float f = (float)Math.abs(to.val0 - val0);
-        float f1 = (float)Math.abs(to.val1 - val1);
-        float f2 = (float)Math.abs(to.val2 - val2);
-        return (int)(f + f1 + f2);
+        float f = (float) Math.abs(to.val0 - val0);
+        float f1 = (float) Math.abs(to.val1 - val1);
+        float f2 = (float) Math.abs(to.val2 - val2);
+        return (int) (f + f1 + f2);
     }
 
     @Override
@@ -114,14 +122,14 @@ public class Vec3Impl implements Comparable<Vec3Impl> {
     }
 
     public Vec3Impl abs() {
-        return new Vec3Impl(Math.abs(val0),Math.abs(val1),Math.abs(val2));
+        return new Vec3Impl(Math.abs(val0), Math.abs(val1), Math.abs(val2));
     }
 
     public boolean equals(Object o) {
         if (this == o) {
             return true;
         } else if (o instanceof Vec3Impl) {
-            Vec3Impl vec3i = (Vec3Impl)o;
+            Vec3Impl vec3i = (Vec3Impl) o;
             return val0 == vec3i.val0 && val1 == vec3i.val1 && val2 == vec3i.val2;
         }
         return false;
@@ -130,4 +138,4 @@ public class Vec3Impl implements Comparable<Vec3Impl> {
     public int hashCode() {
         return (val1 + val2 * 31) * 31 + val0;
     }
-}
+}

src/main/java/com/gtnewhorizon/structurelib/util/XSTR.java

@@ -1,28 +1,28 @@
 package com.gtnewhorizon.structurelib.util;
 /*
-  A subclass of java.util.random that implements the Xorshift random number
-  generator
-  <p>
-  - it is 30% faster than the generator from Java's library - it produces
-  random sequences of higher quality than java.util.Random - this class also
-  provides a clone() function
-  <p>
-  Usage: XSRandom rand = new XSRandom(); //Instantiation x = rand.nextInt();
-  //pull a random number
-  <p>
-  To use the class in legacy code, you may also instantiate an XSRandom object
-  and assign it to a java.util.Random object: java.util.Random rand = new
-  XSRandom();
-  <p>
-  for an explanation of the algorithm, see
-  http://demesos.blogspot.com/2011/09/pseudo-random-number-generators.html
+ A subclass of java.util.random that implements the Xorshift random number
+ generator
+ <p>
+ - it is 30% faster than the generator from Java's library - it produces
+ random sequences of higher quality than java.util.Random - this class also
+ provides a clone() function
+ <p>
+ Usage: XSRandom rand = new XSRandom(); //Instantiation x = rand.nextInt();
+ //pull a random number
+ <p>
+ To use the class in legacy code, you may also instantiate an XSRandom object
+ and assign it to a java.util.Random object: java.util.Random rand = new
+ XSRandom();
+ <p>
+ for an explanation of the algorithm, see
+ http://demesos.blogspot.com/2011/09/pseudo-random-number-generators.html
 
-  @author Wilfried Elmenreich University of Klagenfurt/Lakeside Labs
- * http://www.elmenreich.tk
- * <p>
- * This code is released under the GNU Lesser General Public License Version 3
- * http://www.gnu.org/licenses/lgpl-3.0.txt
- */
+ @author Wilfried Elmenreich University of Klagenfurt/Lakeside Labs
+* http://www.elmenreich.tk
+* <p>
+* This code is released under the GNU Lesser General Public License Version 3
+* http://www.gnu.org/licenses/lgpl-3.0.txt
+*/
 
 import java.util.Random;
 import java.util.concurrent.atomic.AtomicLong;
@@ -40,22 +40,22 @@ public class XSTR extends Random {
     private static final long GAMMA = 0x9e3779b97f4a7c15L;
     private static final int PROBE_INCREMENT = 0x9e3779b9;
     private static final long SEEDER_INCREMENT = 0xbb67ae8584caa73bL;
-    private static final double DOUBLE_UNIT = 0x1.0p-53;  // 1.0  / (1L << 53)
+    private static final double DOUBLE_UNIT = 0x1.0p-53; // 1.0  / (1L << 53)
     private static final float FLOAT_UNIT = 0x1.0p-24f; // 1.0f / (1 << 24)
     private static final AtomicLong seedUniquifier = new AtomicLong(8682522807148012L);
-    public static final XSTR XSTR_INSTANCE=new XSTR(){
+    public static final XSTR XSTR_INSTANCE = new XSTR() {
         @Override
         public synchronized void setSeed(long seed) {
-            if(!Thread.currentThread().getStackTrace()[2].getClassName().equals(Random.class.getName())) {
+            if (!Thread.currentThread().getStackTrace()[2].getClassName().equals(Random.class.getName())) {
                 throw new NoSuchMethodError("This is meant to be shared!, leave seed state alone!");
             }
         }
     };
 
     /*
-     MODIFIED BY: Robotia
-     Modification: Implemented Random class seed generator
-     */
+    MODIFIED BY: Robotia
+    Modification: Implemented Random class seed generator
+    */
 
     /**
      * Creates a new pseudo random number generator. The seed is initialized to
@@ -226,9 +226,9 @@ public class XSTR extends Random {
      */
     @Override
     public int nextInt(int bound) {
-        //if (bound <= 0) {
-        //throw new RuntimeException("BadBound");
-        //}
+        // if (bound <= 0) {
+        // throw new RuntimeException("BadBound");
+        // }
 
         /*int r = next(31);
         int m = bound - 1;
@@ -242,7 +242,7 @@ public class XSTR extends Random {
                 ;
         }
         return r;*/
-        //speedup, new nextInt ~+40%
+        // speedup, new nextInt ~+40%
         long last = seed ^ seed << 21;
         last ^= last >>> 35;
         last ^= last << 4;
@@ -270,9 +270,11 @@ public class XSTR extends Random {
     @Override
     public void nextBytes(byte[] bytes_arr) {
         for (int iba = 0, lenba = bytes_arr.length; iba < lenba; ) {
-            for (int rndba = nextInt(), nba = Math.min(lenba - iba, Integer.SIZE / Byte.SIZE); nba-- > 0; rndba >>= Byte.SIZE) {
+            for (int rndba = nextInt(), nba = Math.min(lenba - iba, Integer.SIZE / Byte.SIZE);
+                    nba-- > 0;
+                    rndba >>= Byte.SIZE) {
                 bytes_arr[iba++] = (byte) rndba;
             }
         }
     }
-}
+}

src/main/resources/assets/structurelib/lang/en_US.lang

@@ -15,11 +15,24 @@ tile.structurelib.blockhint.13.name=Hint air
 tile.structurelib.blockhint.14.name=Hint no air
 tile.structurelib.blockhint.15.name=Hint error
 
-item.structurelib.frontRotationTool.name=Front Rotation Tool
+item.structurelib.frontRotationTool.name=Front Rotation Tool (Standalone)
 item.structurelib.frontRotationTool.desc.0=Triggers Front Rotation Interface
 item.structurelib.frontRotationTool.desc.1=Rotates only the front panel,
 item.structurelib.frontRotationTool.desc.2=which allows structure rotation.
 
+item.structurelib.constructableTrigger.name=Multiblock Structure Hologram Projector
+item.structurelib.constructableTrigger.desc.0=Triggers Constructable Interface
+item.structurelib.constructableTrigger.desc.1=Shows multiblock construction schematic,
+item.structurelib.constructableTrigger.desc.2=use on the multiblock controller.
+item.structurelib.constructableTrigger.desc.3=(Sneak use on controller to build)
+item.structurelib.constructableTrigger.desc.4=Quantity of schematics in item stack affects tier/mode/type
+item.structurelib.constructableTrigger.too_fast=Please wait %d ticks before another autoplace...
+
+structurelib.autoplace.complete=§aThis multiblock has completed!
+structurelib.autoplace.error.not_enabled=§cThis multiblock does not support autoplace in survival!
+structurelib.autoplace.error.no_simple_block=§cSuggested to place §r%s§c but none was found
+structurelib.autoplace.error.no_item_stack=§cSuggested to place block by using §r%s§c but none was found
+
 structurelib.blockhint.desc.0=Helps while building
 structurelib.blockhint.0.name=Hint 1 dot
 structurelib.blockhint.1.name=Hint 2 dot
@@ -42,4 +55,110 @@ structurelib.blockhint.14.name=Hint no air
 structurelib.blockhint.desc.4=Make sure it does not contain Air material.
 structurelib.blockhint.15.name=Hint error
 structurelib.blockhint.desc.5=ERROR, what did u expect?
-itemGroup.structurelib=StructureLib
+itemGroup.structurelib=StructureLib
+
+structurelib.facing.0=down normal none
+structurelib.facing.1=down normal horizontal
+structurelib.facing.2=down normal vertical
+structurelib.facing.3=down normal both
+structurelib.facing.4=down clockwise none
+structurelib.facing.5=down clockwise horizontal
+structurelib.facing.6=down clockwise vertical
+structurelib.facing.7=down clockwise both
+structurelib.facing.8=down upside down
+structurelib.facing.9=down upside down
+structurelib.facing.10=down upside down
+structurelib.facing.11=down upside down
+structurelib.facing.12=down counter clockwise
+structurelib.facing.13=down counter clockwise
+structurelib.facing.14=down counter clockwise
+structurelib.facing.15=down counter clockwise
+structurelib.facing.16=up normal none
+structurelib.facing.17=up normal horizontal
+structurelib.facing.18=up normal vertical
+structurelib.facing.19=up normal both
+structurelib.facing.20=up clockwise none
+structurelib.facing.21=up clockwise horizontal
+structurelib.facing.22=up clockwise vertical
+structurelib.facing.23=up clockwise both
+structurelib.facing.24=up upside down
+structurelib.facing.25=up upside down
+structurelib.facing.26=up upside down
+structurelib.facing.27=up upside down
+structurelib.facing.28=up counter clockwise
+structurelib.facing.29=up counter clockwise
+structurelib.facing.30=up counter clockwise
+structurelib.facing.31=up counter clockwise
+structurelib.facing.32=north normal none
+structurelib.facing.33=north normal horizontal
+structurelib.facing.34=north normal vertical
+structurelib.facing.35=north normal both
+structurelib.facing.36=north clockwise none
+structurelib.facing.37=north clockwise horizontal
+structurelib.facing.38=north clockwise vertical
+structurelib.facing.39=north clockwise both
+structurelib.facing.40=north upside down
+structurelib.facing.41=north upside down
+structurelib.facing.42=north upside down
+structurelib.facing.43=north upside down
+structurelib.facing.44=north counter clockwise
+structurelib.facing.45=north counter clockwise
+structurelib.facing.46=north counter clockwise
+structurelib.facing.47=north counter clockwise
+structurelib.facing.48=south normal none
+structurelib.facing.49=south normal horizontal
+structurelib.facing.50=south normal vertical
+structurelib.facing.51=south normal both
+structurelib.facing.52=south clockwise none
+structurelib.facing.53=south clockwise horizontal
+structurelib.facing.54=south clockwise vertical
+structurelib.facing.55=south clockwise both
+structurelib.facing.56=south upside down
+structurelib.facing.57=south upside down
+structurelib.facing.58=south upside down
+structurelib.facing.59=south upside down
+structurelib.facing.60=south counter clockwise
+structurelib.facing.61=south counter clockwise
+structurelib.facing.62=south counter clockwise
+structurelib.facing.63=south counter clockwise
+structurelib.facing.64=west normal none
+structurelib.facing.65=west normal horizontal
+structurelib.facing.66=west normal vertical
+structurelib.facing.67=west normal both
+structurelib.facing.68=west clockwise none
+structurelib.facing.69=west clockwise horizontal
+structurelib.facing.70=west clockwise vertical
+structurelib.facing.71=west clockwise both
+structurelib.facing.72=west upside down
+structurelib.facing.73=west upside down
+structurelib.facing.74=west upside down
+structurelib.facing.75=west upside down
+structurelib.facing.76=west counter clockwise
+structurelib.facing.77=west counter clockwise
+structurelib.facing.78=west counter clockwise
+structurelib.facing.79=west counter clockwise
+structurelib.facing.80=east normal none
+structurelib.facing.81=east normal horizontal
+structurelib.facing.82=east normal vertical
+structurelib.facing.83=east normal both
+structurelib.facing.84=east clockwise none
+structurelib.facing.85=east clockwise horizontal
+structurelib.facing.86=east clockwise vertical
+structurelib.facing.87=east clockwise both
+structurelib.facing.88=east upside down
+structurelib.facing.89=east upside down
+structurelib.facing.90=east upside down
+structurelib.facing.91=east upside down
+structurelib.facing.92=east counter clockwise
+structurelib.facing.93=east counter clockwise
+structurelib.facing.94=east counter clockwise
+structurelib.facing.95=east counter clockwise
+
+structurelib.config.client=Client Side Configurations
+structurelib.config.client.tooltip=Configurations that only changes how the game looks like, but not how it functions.
+structurelib.config.client.hologram=Hologram Configurations
+structurelib.config.client.hologram.tooltip=Configurations that changes how the hologram got projected into the world by default.
+structurelib.config.client.hologram.maxCoexisting=Max Coexisting Holograms
+structurelib.config.client.hologram.maxCoexisting.tooltip=Number of holograms that can coexist. Usually all hints generated by one right click belongs to one hologram. An attempt will be made to prune old holograms when a new hologram is about to be projected and this limit would be exceeded.
+structurelib.config.client.hologram.removeColliding=Remove Colliding Holograms
+structurelib.config.client.hologram.removeColliding.tooltip=Whether an attempt will be made to remove any existing hologram that collides with a new hologram.

src/main/resources/assets/structurelib/lang/zh_CN.lang

@@ -0,0 +1,164 @@
+tile.structurelib.blockhint.0.name=提示方块：1号
+tile.structurelib.blockhint.1.name=提示方块：2号
+tile.structurelib.blockhint.2.name=提示方块：3号
+tile.structurelib.blockhint.3.name=提示方块：4号
+tile.structurelib.blockhint.4.name=提示方块：5号
+tile.structurelib.blockhint.5.name=提示方块：6号
+tile.structurelib.blockhint.6.name=提示方块：7号
+tile.structurelib.blockhint.7.name=提示方块：8号
+tile.structurelib.blockhint.8.name=提示方块：9号
+tile.structurelib.blockhint.9.name=提示方块：10号
+tile.structurelib.blockhint.10.name=提示方块：11号
+tile.structurelib.blockhint.11.name=提示方块：12号
+tile.structurelib.blockhint.12.name=提示方块：一般
+tile.structurelib.blockhint.13.name=提示方块：空气
+tile.structurelib.blockhint.14.name=提示方块：非空气
+tile.structurelib.blockhint.15.name=提示方块：错误
+
+item.structurelib.frontRotationTool.name=正面旋转扳手 (StructureLib)
+item.structurelib.frontRotationTool.desc.0=可以旋转/翻转多方块主机
+item.structurelib.frontRotationTool.desc.1=多方块机器结构也需要跟随
+item.structurelib.frontRotationTool.desc.2=多方块主机一起旋转/翻转。
+
+item.structurelib.constructableTrigger.name=多方块结构全息投影仪
+item.structurelib.constructableTrigger.desc.0=可以显示多方块机器的结构
+item.structurelib.constructableTrigger.desc.1=只能在多方块主机上使用，将会显示机器
+item.structurelib.constructableTrigger.desc.2=结构的示意图。 (译者注：请搭高使用)
+item.structurelib.constructableTrigger.desc.3= (潜行右键可以直接完成搭建)
+item.structurelib.constructableTrigger.desc.4=此物品堆叠数量会影响显示的机器等级/模式/类型
+item.structurelib.constructableTrigger.too_fast=请在下一次自动搭建前等待%dtick...
+
+structurelib.autoplace.complete=§a这个多方块结构已经完成自动搭建！
+structurelib.autoplace.error.not_enabled=§c这个多方块结构不支持在生存模式下自动搭建！
+structurelib.autoplace.error.no_simple_block=§c建议放置§r%s§c，但没有找到它
+structurelib.autoplace.error.no_item_stack=§c建议使用§r%s§c放置方块，但没有找到它
+
+structurelib.blockhint.desc.0=帮助你搭建机器
+structurelib.blockhint.0.name=提示方块：1号
+structurelib.blockhint.1.name=提示方块：2号
+structurelib.blockhint.2.name=提示方块：3号
+structurelib.blockhint.3.name=提示方块：4号
+structurelib.blockhint.4.name=提示方块：5号
+structurelib.blockhint.5.name=提示方块：6号
+structurelib.blockhint.6.name=提示方块：7号
+structurelib.blockhint.7.name=提示方块：8号
+structurelib.blockhint.8.name=提示方块：9号
+structurelib.blockhint.9.name=提示方块：10号
+structurelib.blockhint.10.name=提示方块：11号
+structurelib.blockhint.11.name=提示方块：12号
+structurelib.blockhint.desc.1=特定方块们的占位符。
+structurelib.blockhint.12.name=提示方块：一般
+structurelib.blockhint.desc.2=一般通用占位符。
+structurelib.blockhint.13.name=提示方块：空气
+structurelib.blockhint.desc.3=确保这里是空气方块。
+structurelib.blockhint.14.name=提示方块：非空气
+structurelib.blockhint.desc.4=确保这里不是空气方块。
+structurelib.blockhint.15.name=提示方块：错误
+structurelib.blockhint.desc.5=ERROR，你想要做什么？
+itemGroup.structurelib=StructureLib
+
+structurelib.facing.0=面朝下方
+structurelib.facing.1=面朝下方，并水平翻转
+structurelib.facing.2=面朝下方，并垂直翻转
+structurelib.facing.3=面朝下方，并旋转180度
+structurelib.facing.4=面朝下方，并顺时针旋转90度
+structurelib.facing.5=面朝下方，顺时针旋转90度并水平翻转
+structurelib.facing.6=面朝下方，顺时针旋转90度并垂直翻转
+structurelib.facing.7=面朝下方，并逆时针旋转90度
+structurelib.facing.8=面朝下方，并旋转180度
+structurelib.facing.9=面朝下方，并垂直翻转
+structurelib.facing.10=面朝下方，并水平翻转
+structurelib.facing.11=面朝下方
+structurelib.facing.12=面朝下方，并逆时针旋转90度
+structurelib.facing.13=面朝下方，逆时针旋转90度并水平翻转
+structurelib.facing.14=面朝下方，逆时针旋转90度并垂直翻转
+structurelib.facing.15=面朝下方，并顺时针旋转90度
+structurelib.facing.16=面朝上方
+structurelib.facing.17=面朝上方，并水平翻转
+structurelib.facing.18=面朝上方，并垂直翻转
+structurelib.facing.19=面朝上方，并旋转180度
+structurelib.facing.20=面朝上方，并顺时针旋转90度
+structurelib.facing.21=面朝上方，顺时针旋转90度并水平翻转
+structurelib.facing.22=面朝上方，顺时针旋转90度并垂直翻转
+structurelib.facing.23=面朝上方，并逆时针旋转90度
+structurelib.facing.24=面朝上方，并旋转180度
+structurelib.facing.25=面朝上方，并垂直翻转
+structurelib.facing.26=面朝上方，并水平翻转
+structurelib.facing.27=面朝上方
+structurelib.facing.28=面朝上方，并逆时针旋转90度
+structurelib.facing.29=面朝上方，逆时针旋转90度并水平翻转
+structurelib.facing.30=面朝上方，逆时针旋转90度并垂直翻转
+structurelib.facing.31=面朝上方，并顺时针旋转90度
+structurelib.facing.32=面朝北方
+structurelib.facing.33=面朝北方，并水平翻转
+structurelib.facing.34=面朝北方，并垂直翻转
+structurelib.facing.35=面朝北方，并旋转180度
+structurelib.facing.36=面朝北方，并顺时针旋转90度
+structurelib.facing.37=面朝北方，顺时针旋转90度并水平翻转
+structurelib.facing.38=面朝北方，顺时针旋转90度并垂直翻转
+structurelib.facing.39=面朝北方，并逆时针旋转90度
+structurelib.facing.40=面朝北方，并旋转180度
+structurelib.facing.41=面朝北方，并垂直翻转
+structurelib.facing.42=面朝北方，并水平翻转
+structurelib.facing.43=面朝北方
+structurelib.facing.44=面朝北方，并逆时针旋转90度
+structurelib.facing.45=面朝北方，逆时针旋转90度并水平翻转
+structurelib.facing.46=面朝北方，逆时针旋转90度并垂直翻转
+structurelib.facing.47=面朝北方，并顺时针旋转90度
+structurelib.facing.48=面朝南方
+structurelib.facing.49=面朝南方，并水平翻转
+structurelib.facing.50=面朝南方，并垂直翻转
+structurelib.facing.51=面朝南方，并旋转180度
+structurelib.facing.52=面朝南方，并顺时针旋转90度
+structurelib.facing.53=面朝南方，顺时针旋转90度并水平翻转
+structurelib.facing.54=面朝南方，顺时针旋转90度并垂直翻转
+structurelib.facing.55=面朝南方，并逆时针旋转90度
+structurelib.facing.56=面朝南方，并旋转180度
+structurelib.facing.57=面朝南方，并垂直翻转
+structurelib.facing.58=面朝南方，并水平翻转
+structurelib.facing.59=面朝南方
+structurelib.facing.60=面朝南方，并逆时针旋转90度
+structurelib.facing.61=面朝南方，逆时针旋转90度并水平翻转
+structurelib.facing.62=面朝南方，逆时针旋转90度并垂直翻转
+structurelib.facing.63=面朝南方，并顺时针旋转90度
+structurelib.facing.64=面朝西方
+structurelib.facing.65=面朝西方，并水平翻转
+structurelib.facing.66=面朝西方，并垂直翻转
+structurelib.facing.67=面朝西方，并旋转180度
+structurelib.facing.68=面朝西方，并顺时针旋转90度
+structurelib.facing.69=面朝西方，顺时针旋转90度并水平翻转
+structurelib.facing.70=面朝西方，顺时针旋转90度并垂直翻转
+structurelib.facing.71=面朝西方，并逆时针旋转90度
+structurelib.facing.72=面朝西方，并旋转180度
+structurelib.facing.73=面朝西方，并垂直翻转
+structurelib.facing.74=面朝西方，并水平翻转
+structurelib.facing.75=面朝西方
+structurelib.facing.76=面朝西方，并逆时针旋转90度
+structurelib.facing.77=面朝西方，逆时针旋转90度并水平翻转
+structurelib.facing.78=面朝西方，逆时针旋转90度并垂直翻转
+structurelib.facing.79=面朝西方，并顺时针旋转90度
+structurelib.facing.80=面朝东方
+structurelib.facing.81=面朝东方，并水平翻转
+structurelib.facing.82=面朝东方，并垂直翻转
+structurelib.facing.83=面朝东方，并旋转180度
+structurelib.facing.84=面朝东方，并顺时针旋转90度
+structurelib.facing.85=面朝东方，顺时针旋转90度并水平翻转
+structurelib.facing.86=面朝东方，顺时针旋转90度并垂直翻转
+structurelib.facing.87=面朝东方，并逆时针旋转90度
+structurelib.facing.88=面朝东方，并旋转180度
+structurelib.facing.89=面朝东方，并垂直翻转
+structurelib.facing.90=面朝东方，并水平翻转
+structurelib.facing.91=面朝东方
+structurelib.facing.92=面朝东方，并逆时针旋转90度
+structurelib.facing.93=面朝东方，逆时针旋转90度并水平翻转
+structurelib.facing.94=面朝东方，逆时针旋转90度并垂直翻转
+structurelib.facing.95=面朝东方，并顺时针旋转90度
+
+structurelib.config.client=客户端-配置
+structurelib.config.client.tooltip=修改此配置只会改变游戏中的显示效果，而不会改变实际工作模式。
+structurelib.config.client.hologram=全息投影仪-配置
+structurelib.config.client.hologram.tooltip=这将决定默认情况下，机器结构细节将如何被投影到世界中。
+structurelib.config.client.hologram.maxCoexisting=最多可以同时存在的全息投影数量
+structurelib.config.client.hologram.maxCoexisting.tooltip=这决定最多可以同时存在多少台机器的全息投影。一般一次使用全息投影仪右键生成的所有机器结构细节被视为一个全息投影。当同时存在多个全息投影，并超过此数量时，再次使用全息投影仪会移除旧有的全息投影。
+structurelib.config.client.hologram.removeColliding=移除冲突的全息投影
+structurelib.config.client.hologram.removeColliding.tooltip=当新的全息投影与已存在的全息投影冲突时，开启此选项时会移除已存在的全息投影。

src/main/resources/mcmod.info

@@ -1,10 +1,10 @@
 [
 {
-  "modid": "structurelib",
-  "name": "StructureLib",
+  "modid": "${modId}",
+  "name": "${modName}",
   "description": "Multiblocks with ease",
-  "version": "${version}",
-  "mcversion": "${mcversion}",
+  "version": "${modVersion}",
+  "mcversion": "${minecraftVersion}",
   "url": "",
   "updateUrl": "",
   "authorList": ["glee8e"],