Added BlockBuilder#copyPropertiesFrom(block)

src/main/java/dev/latvian/mods/kubejs/block/BlockBuilder.java

@@ -68,6 +68,7 @@ public abstract class BlockBuilder extends BuilderBase<Block> {
 	private static final BlockBehaviour.StatePredicate ALWAYS_FALSE_STATE_PREDICATE = (blockState, blockGetter, blockPos) -> false;
 	private static final BlockBehaviour.StateArgumentPredicate<?> ALWAYS_FALSE_STATE_ARG_PREDICATE = (blockState, blockGetter, blockPos, type) -> false;
 
+	public transient Block copyPropertiesFrom;
 	public transient SoundType soundType;
 	public transient Function<BlockState, MapColor> mapColorFn;
 	public transient float hardness;
@@ -112,8 +113,8 @@ public abstract class BlockBuilder extends BuilderBase<Block> {
 
 	public BlockBuilder(ResourceLocation i) {
 		super(i);
-		soundType = SoundType.WOOD;
-		mapColorFn = MapColorHelper.NONE;
+		soundType = null;
+		mapColorFn = null;
 		hardness = 1.5F;
 		resistance = 3F;
 		lightLevel = 0F;
@@ -311,6 +312,11 @@ protected boolean areAllTexturesEqual(JsonObject tex, String t) {
 		return true;
 	}
 
+	public BlockBuilder copyPropertiesFrom(Block block) {
+		copyPropertiesFrom = block;
+		return this;
+	}
+
 	@Info("Sets the block's sound type. Defaults to wood.")
 	public BlockBuilder soundType(SoundType m) {
 		if (m == null || m == SoundType.EMPTY) {
@@ -804,17 +810,25 @@ public BlockBuilder blockEntity(Consumer<BlockEntityInfo> callback) {
 	}
 
 	public Block.Properties createProperties() {
-		var properties = new KubeJSBlockProperties(this);
-		properties.sound(soundType);
-		properties.mapColor(mapColorFn);
+		var properties = new KubeJSBlockProperties(this, copyPropertiesFrom);
+
+		if (soundType != null) {
+			properties.sound(soundType);
+		}
+
+		if (mapColorFn != null) {
+			properties.mapColor(mapColorFn);
+		}
 
 		if (resistance >= 0F) {
 			properties.strength(hardness, resistance);
 		} else {
 			properties.strength(hardness);
 		}
 
-		properties.lightLevel(state -> (int) (lightLevel * 15F));
+		if (lightLevel > 0F) {
+			properties.lightLevel(state -> (int) (lightLevel * 15F));
+		}
 
 		if (noCollision) {
 			properties.noCollission();

src/main/java/dev/latvian/mods/kubejs/block/KubeJSBlockProperties.java

@@ -1,12 +1,33 @@
 package dev.latvian.mods.kubejs.block;
 
+import net.minecraft.world.level.block.Block;
 import net.minecraft.world.level.block.state.BlockBehaviour;
+import org.jetbrains.annotations.Nullable;
+
+import java.lang.reflect.Modifier;
 
 public class KubeJSBlockProperties extends BlockBehaviour.Properties {
 	public final BlockBuilder blockBuilder;
 
-	public KubeJSBlockProperties(BlockBuilder blockBuilder) {
+	public KubeJSBlockProperties(BlockBuilder blockBuilder, @Nullable Block copyPropertiesFrom) {
 		super();
 		this.blockBuilder = blockBuilder;
+
+		if (copyPropertiesFrom != null) {
+			// incredibly cursed but alternative is ATing every field
+
+			try {
+				var from = copyPropertiesFrom.properties();
+
+				for (var field : BlockBehaviour.Properties.class.getDeclaredFields()) {
+					if (!Modifier.isStatic(field.getModifiers()) && !Modifier.isFinal(field.getModifiers())) {
+						field.setAccessible(true);
+						field.set(this, field.get(from));
+					}
+				}
+			} catch (Exception ex) {
+				ex.printStackTrace();
+			}
+		}
 	}
 }