Upload block data generator source code

level/block/generator/Main.java

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+// This file is used to generate blocks.nbt and block_states.nbt
+// The necessary environment can be generate from https://github.com/Hexeption/MCP-Reborn
+package tnze.github.com;
+
+import com.google.common.collect.ImmutableMap;
+import net.minecraft.SharedConstants;
+import net.minecraft.core.Registry;
+import net.minecraft.nbt.CompoundTag;
+import net.minecraft.nbt.ListTag;
+import net.minecraft.nbt.NbtIo;
+import net.minecraft.nbt.NbtUtils;
+import net.minecraft.server.Bootstrap;
+import net.minecraft.world.level.block.Block;
+import net.minecraft.world.level.block.Blocks;
+import net.minecraft.world.level.block.state.BlockState;
+import net.minecraft.world.level.block.state.properties.EnumProperty;
+import net.minecraft.world.level.block.state.properties.Property;
+
+import java.io.DataOutput;
+import java.io.DataOutputStream;
+import java.io.FileOutputStream;
+import java.util.Map;
+import java.util.zip.GZIPOutputStream;
+
+public class Main {
+
+    public static void main(String[] args) throws Exception {
+        System.out.println("program start!");
+        SharedConstants.tryDetectVersion();
+        Bootstrap.bootStrap();
+        Blocks.rebuildCache();
+
+        try (FileOutputStream f = new FileOutputStream("blocks.nbt")) {
+            try (GZIPOutputStream g = new GZIPOutputStream(f)){
+                DataOutput writer = new DataOutputStream(g);
+                NbtIo.writeUnnamedTag(getBlocksWithMeta(), writer);
+            }
+        }
+        try (FileOutputStream f = new FileOutputStream("block_states.nbt")) {
+            try (GZIPOutputStream g = new GZIPOutputStream(f)){
+                DataOutput writer = new DataOutputStream(g);
+                NbtIo.writeUnnamedTag(getBlockStates(), writer);
+            }
+        }
+    }
+
+    private static ListTag getBlocksWithMeta() throws Exception {
+        ListTag list = new ListTag();
+        for (Block block : Registry.BLOCK) {
+            BlockState state = block.defaultBlockState();
+            CompoundTag b = new CompoundTag();
+            b.putString("Name", Registry.BLOCK.getKey(block).toString());
+            ImmutableMap<Property<?>, Comparable<?>> values = state.getValues();
+            if (!values.isEmpty()) {
+                CompoundTag meta = new CompoundTag();
+                for (Map.Entry<Property<?>, Comparable<?>> entry : values.entrySet()) {
+                    Property<?> key = entry.getKey();
+                    Comparable<?> value = entry.getValue();
+                    String name = key.getName();
+                    String typeName;
+                    if (key instanceof EnumProperty<?>) {
+                        if (value.getClass().getName().contains("net.minecraft.core.Direction$Axis")) {
+                            typeName = "Axis";
+                        } else {
+                            typeName = value.getClass().getSimpleName();
+                        }
+                        if (typeName.isBlank()) {
+                            throw new Exception("Type is blank: " + value.getClass().getName());
+                        }
+                    } else {
+                        typeName = key.getClass().getSimpleName();
+                    }
+                    meta.putString(name, typeName);
+                }
+                b.put("Meta", meta);
+            }
+            list.add(b);
+        }
+        return list;
+    }
+
+    private static ListTag getBlockStates() {
+        ListTag list = new ListTag();
+        for (BlockState blockState : Block.BLOCK_STATE_REGISTRY) {
+            list.add(NbtUtils.writeBlockState(blockState));
+        }
+        return list;
+    }
+}