Postea/src/main/java/com/colen/postea/Postea.java

package com.colen.postea;

import com.colen.postea.API.BlockReplacementManager;
import com.colen.postea.API.TileEntityReplacementManager;
import com.colen.postea.Utility.BlockConversionInfo;
import com.colen.postea.Utility.BlockInfo;
import cpw.mods.fml.common.Mod;
import cpw.mods.fml.common.event.FMLPostInitializationEvent;
import cpw.mods.fml.common.event.FMLPreInitializationEvent;
import net.minecraft.block.Block;
import net.minecraft.init.Blocks;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.nbt.NBTTagList;

import java.util.function.Function;

import static com.colen.postea.Utility.PosteaUtilities.cleanseNBT;

@Mod(modid = Tags.MODID, version = Tags.VERSION, name = Tags.MODNAME, acceptedMinecraftVersions = "[1.7.10]")
@SuppressWarnings("unused")
public class Postea {

    @Mod.EventHandler
    public void preInit(FMLPreInitializationEvent event) {
        //ItemStackReplacementManager.addItemReplacement(Item.getItemFromBlock(Blocks.grass), 0, Item.getItemFromBlock(Blocks.coal_ore), 10);
//        BlockReplacementManager.addBlockReplacement(GregTech_API.sBlockOres1, 6, Blocks.emerald_ore, 0);
//        BlockReplacementManager.addBlockReplacement(GregTech_API.sBlockOres1, 16022, Blocks.nether_brick, 0);
//        BlockReplacementManager.addBlockReplacement(GregTech_API.sBlockOres1, 1018, Blocks.end_stone, 0);

        // Define the transformation function
/*        Function<NBTTagCompound, NBTTagCompound> myTransformer = (tag) -> {
            if (tag.getInteger("m") == 86) {
                tag.setInteger("m", 323);
                return tag;
            }
            return tag;
        };*/

        //TileEntityReplacementManager.tileEntityFixer("GT_TileEntity_Ores", myTransformer);
        TileEntityReplacementManager.tileEntityTransformer("GT_TileEntity_Ores", (tag, world) -> {
            if (world.provider.dimensionId == -1) {
                return new BlockInfo(Blocks.wool, 1);
            }

            if (world.provider.dimensionId == 1) {
                return new BlockInfo(Blocks.wool, 2);
            }

            return new BlockInfo(Blocks.wool, 3);
        });


/*        TileEntityReplacementManager.tileEntityTransformer("Furnace", (tag) -> {

            Function<NBTTagCompound, NBTTagCompound> chestTransformer = (oldTag) -> {

                NBTTagCompound newTag = cleanseNBT("Chest", oldTag);

                NBTTagList tagList = new NBTTagList();

                NBTTagCompound stoneAtSlot13 = new NBTTagCompound();
                stoneAtSlot13.setByte("Count", (byte) 1);
                stoneAtSlot13.setByte("Slot", (byte) 13);
                stoneAtSlot13.setShort("Damage", (short) 0);
                stoneAtSlot13.setShort("id", (short) 1);

                tagList.appendTag(stoneAtSlot13);

                newTag.setTag("Items", tagList);

                return newTag;
            };

            return new ChunkFixerUtility.BlockInfo(Blocks.chest, 0, chestTransformer);
        });*/

        TileEntityReplacementManager.tileEntityTransformer("Chest", (tag, world) -> {

            Function<NBTTagCompound, NBTTagCompound> chestTransformer = (oldTag) -> {

                NBTTagCompound newTag = cleanseNBT("Chest", oldTag);

                NBTTagList tagList = new NBTTagList();

                NBTTagCompound stoneAtSlot12 = new NBTTagCompound();
                stoneAtSlot12.setByte("Count", (byte) 2);
                stoneAtSlot12.setByte("Slot", (byte) 12);
                stoneAtSlot12.setShort("Damage", (short) 0);
                stoneAtSlot12.setShort("id", (short) 1);

                NBTTagCompound stoneAtSlot14 = new NBTTagCompound();
                stoneAtSlot14.setByte("Count", (byte) 4);
                stoneAtSlot14.setByte("Slot", (byte) 14);
                stoneAtSlot14.setShort("Damage", (short) 3);
                stoneAtSlot14.setShort("id", (short) 5);

                tagList.appendTag(stoneAtSlot12);
                tagList.appendTag(stoneAtSlot14);

                newTag.setTag("Items", tagList);

                return newTag;
            };

            return new BlockInfo(Blocks.chest, 0, chestTransformer);
        });



        Function<BlockConversionInfo, BlockConversionInfo> blockTransformer = (blockConversionInfoOld) -> {

            BlockConversionInfo blockConversionInfoNew = new BlockConversionInfo();

            if ((blockConversionInfoOld.x == 334 && blockConversionInfoOld.y == 4 && blockConversionInfoOld.z == 73)) {
                blockConversionInfoNew.blockID = Block.getIdFromBlock(Blocks.wool);
                blockConversionInfoNew.metadata = 1;
            } else {
                blockConversionInfoNew.blockID = blockConversionInfoOld.blockID;
                blockConversionInfoNew.metadata = blockConversionInfoOld.metadata;
            }

            return blockConversionInfoNew;
        };

        BlockReplacementManager.addBlockReplacement("minecraft:grass", blockTransformer);

    }

    @Mod.EventHandler
    public void postInit(FMLPostInitializationEvent event) {
        //BlockReplacementManager.addBlockReplacement(GregTech_API.sBlockOres1, 0, Blocks.chest, 0);
    }
}