Code/net/minecraft/world/level/block/NyliumBlock.java

package net.minecraft.world.level.block;

import com.mojang.serialization.MapCodec;
import net.minecraft.core.BlockPos;
import net.minecraft.core.Direction;
import net.minecraft.core.Holder;
import net.minecraft.core.Registry;
import net.minecraft.core.registries.Registries;
import net.minecraft.data.worldgen.features.NetherFeatures;
import net.minecraft.resources.ResourceKey;
import net.minecraft.server.level.ServerLevel;
import net.minecraft.util.RandomSource;
import net.minecraft.world.level.Level;
import net.minecraft.world.level.LevelReader;
import net.minecraft.world.level.block.state.BlockBehaviour;
import net.minecraft.world.level.block.state.BlockState;
import net.minecraft.world.level.chunk.ChunkGenerator;
import net.minecraft.world.level.levelgen.feature.ConfiguredFeature;
import net.minecraft.world.level.lighting.LightEngine;

public class NyliumBlock extends Block implements BonemealableBlock {
    public static final MapCodec<NyliumBlock> CODEC = simpleCodec(NyliumBlock::new);

    @Override
    public MapCodec<NyliumBlock> codec() {
        return CODEC;
    }

    protected NyliumBlock(BlockBehaviour.Properties p_55057_) {
        super(p_55057_);
    }

    private static boolean canBeNylium(BlockState p_55079_, LevelReader p_55080_, BlockPos p_55081_) {
        BlockPos blockpos = p_55081_.above();
        BlockState blockstate = p_55080_.getBlockState(blockpos);
        int i = LightEngine.getLightBlockInto(p_55079_, blockstate, Direction.UP, blockstate.getLightBlock());
        return i < 15;
    }

    @Override
    protected void randomTick(BlockState p_221835_, ServerLevel p_221836_, BlockPos p_221837_, RandomSource p_221838_) {
        if (!canBeNylium(p_221835_, p_221836_, p_221837_)) {
            p_221836_.setBlockAndUpdate(p_221837_, Blocks.NETHERRACK.defaultBlockState());
        }
    }

    @Override
    public boolean isValidBonemealTarget(LevelReader p_256194_, BlockPos p_256152_, BlockState p_256389_) {
        return p_256194_.getBlockState(p_256152_.above()).isAir();
    }

    @Override
    public boolean isBonemealSuccess(Level p_221830_, RandomSource p_221831_, BlockPos p_221832_, BlockState p_221833_) {
        return true;
    }

    @Override
    public void performBonemeal(ServerLevel p_221825_, RandomSource p_221826_, BlockPos p_221827_, BlockState p_221828_) {
        BlockState blockstate = p_221825_.getBlockState(p_221827_);
        BlockPos blockpos = p_221827_.above();
        ChunkGenerator chunkgenerator = p_221825_.getChunkSource().getGenerator();
        Registry<ConfiguredFeature<?, ?>> registry = p_221825_.registryAccess().lookupOrThrow(Registries.CONFIGURED_FEATURE);
        if (blockstate.is(Blocks.CRIMSON_NYLIUM)) {
            this.place(registry, NetherFeatures.CRIMSON_FOREST_VEGETATION_BONEMEAL, p_221825_, chunkgenerator, p_221826_, blockpos);
        } else if (blockstate.is(Blocks.WARPED_NYLIUM)) {
            this.place(registry, NetherFeatures.WARPED_FOREST_VEGETATION_BONEMEAL, p_221825_, chunkgenerator, p_221826_, blockpos);
            this.place(registry, NetherFeatures.NETHER_SPROUTS_BONEMEAL, p_221825_, chunkgenerator, p_221826_, blockpos);
            if (p_221826_.nextInt(8) == 0) {
                this.place(registry, NetherFeatures.TWISTING_VINES_BONEMEAL, p_221825_, chunkgenerator, p_221826_, blockpos);
            }
        }
    }

    private void place(
        Registry<ConfiguredFeature<?, ?>> p_255879_,
        ResourceKey<ConfiguredFeature<?, ?>> p_256032_,
        ServerLevel p_255631_,
        ChunkGenerator p_256445_,
        RandomSource p_255709_,
        BlockPos p_256019_
    ) {
        p_255879_.get(p_256032_).ifPresent(p_255920_ -> p_255920_.value().place(p_255631_, p_256445_, p_255709_, p_256019_));
    }

    @Override
    public BonemealableBlock.Type getType() {
        return BonemealableBlock.Type.NEIGHBOR_SPREADER;
    }
}