39自定义树

代码

新建一个worldgenerater：ChestnutSaplingGenerator

public class ChestnutSaplingGenerator extends SaplingGenerator {
    @Nullable
    @Override
    protected RegistryKey<ConfiguredFeature<?, ?>> getTreeFeature(Random random, boolean bees) {
        return ModConfiguredFeatures.CHESTNUT_KEY;
    }
}

ModConfiguredFeatures配置：

   public static final RegistryKey<ConfiguredFeature<?, ?>> CHESTNUT_KEY = registerKey("chestnut");

    public static void boostrap(Registerable<ConfiguredFeature<?, ?>> context) {
        register(context, CHESTNUT_KEY, Feature.TREE, new TreeFeatureConfig.Builder(
                BlockStateProvider.of(ModBlocks.CHESTNUT_LOG),
                new StraightTrunkPlacer(5, 4, 3),

                BlockStateProvider.of(ModBlocks.CHESTNUT_LEAVES),
                new BlobFoliagePlacer(ConstantIntProvider.create(2), ConstantIntProvider.create(1), 2),

                new TwoLayersFeatureSize(1, 0, 2)).build());
    }

新建一个Block：

public static final Block CHESTNUT_SAPLING = registerBlock("chestnut_sapling",
        new SaplingBlock(new ChestnutSaplingGenerator(), FabricBlockSettings.copyOf(Blocks.OAK_SAPLING)));

添加到物品组中：

entries.add(ModBlocks.CHESTNUT_SAPLING);

配置数据生成ModLootTableProvider：

addDrop(ModBlocks.CHESTNUT_SAPLING);

addDrop(ModBlocks.CHESTNUT_LEAVES, leavesDrops(ModBlocks.CHESTNUT_LEAVES, ModBlocks.CHESTNUT_SAPLING, 0.0025f));

ModModelProvider：

blockStateModelGenerator.registerTintableCross(ModBlocks.CHESTNUT_SAPLING, BlockStateModelGenerator.TintType.NOT_TINTED);

启动类：

BlockRenderLayerMap.INSTANCE.putBlock(ModBlocks.CHESTNUT_SAPLING, RenderLayer.getCutout());

效果