Script Editor & Scripting Enhancements

The script editor has been rebuilt from the ground up into a full-featured code editor right inside Minecraft, with syntax highlighting, autocomplete, error detection, and support for writing scripts in Java.

Script Editor

Writing Code

Syntax Highlighting - Keywords, types, variables, methods, strings, and comments are color-coded automatically. Local variables, global fields, and chained method calls each get their own color
Autocomplete - Smart suggestions for methods, fields, and classes as you type. Knows whether you're in a static or instance context. Frequently used members appear first, and the cursor is placed between parentheses when a method has parameters
Auto Imports - Type a class name and the editor suggests the correct import
Error Detection - Catches mistakes before you run your script. Wrong argument types, missing methods, type mismatches, and unused imports are underlined with detailed error messages on hover
Built-in Globals - Objects like Math, JSON, Date, and Number are recognized automatically in JavaScript mode. Script variables like npc, world, and event are also recognized
JS Language Support - Arrow functions (=>), shorthand methods, object literals, and array expressions are all understood by the highlighter and type resolver

Hover over any symbol to see its full type information, documentation, and declaration. Hover tooltips support JSDoc with markdown formatting, headings, code blocks, and scrolling for long documentation.

Go To Line - CTRL+G jumps to any line
Search & Replace - CTRL+F to search, CTRL+H to replace. All matches highlight in real-time
Go To Definition - CTRL+Click any method, field, or type to jump to its definition
Fullscreen Mode - Expand the editor to fill your entire game window

Editing

Undo/Redo - Smart undo that works on whole words, not individual characters
Duplicate Line - CTRL+D to duplicate the current line
Comment Toggle - CTRL+/ to comment or uncomment selected lines
Rename - Rename a variable or method and every occurrence updates at once
Move Lines - Move lines up or down with shortcuts
Copy Whole Line - Copy with nothing selected grabs the entire line
Triple Click - Select an entire line instantly

Visual Polish

Line Numbers - Clean gutter with current line highlighting
Smooth Scrolling - Eased scroll animations
Indent Guides - Vertical lines showing nesting depth, with the current scope highlighted in green
Brace Matching - Matching {} braces light up, unclosed braces turn red
Smart Brackets - Typing { auto-creates the closing } with correct indentation. Same for (), [], "", and ''
Resizable Panels - Autocomplete and hover panels can be resized and panned
Keyboard Shortcut Overlay - Press a button to see all available shortcuts

Java Scripting (Janino)

Write scripts in real Java instead of JavaScript. Powered by the Janino compiler, your Java code is compiled and runs natively.

Full Java Language - Classes, interfaces, enums, generics, lambdas, and method references — everything you know from Java
Automatic Hook Resolution - Name your methods after the hook you want (e.g., init, tick, interact) and they're wired up automatically
Language Selector - Each script tab has a dropdown to choose between JavaScript and Java. Mix and match across tabs
Broad Support - Java scripting works in NPC, Player, Forge, Recipe, Effect, and Linked Item scripts
External Files - Write .java scripts in an external editor and they load automatically

Java and JavaScript scripts coexist side by side. Pick whichever language fits your workflow.

Client-Side Scripting

Scripts can now run on the client for responsive, visual experiences.

Server Controlled - Server owners decide whether client scripting is allowed. Players can't enable it themselves
Automatic Sync - Script files are sent from the server to all clients on login, and re-synced on script reload
Safe by Default - Off by default, must be explicitly enabled in the server config

Client-side scripts open the door to custom UI effects, visual feedback, and client-only hooks — all while the server stays in control.

Addon API Support

Addon developers can ship type definitions alongside their mods, giving scripters full autocomplete and documentation for addon APIs.

Automatic Loading - Any mod can include .d.ts definition files in their assets/<modid>/api/ directory and they appear in the script editor automatically
Patch Support - Addons can extend existing CNPC+ types with new methods (e.g., a DBC addon adding getDBCPlayer() to the Player type)
Full Documentation - Parameter names, return types, and descriptions show up in autocomplete and hover info
Hot Reload - Definition files are reloaded when Minecraft resources are reloaded

Scripters get autocomplete for addon APIs with zero setup. Addon developers just include their definitions.

5.1 KiB Raw Blame History