minecraft-src/net/minecraft/world/level/block/SculkVeinBlock.java

package net.minecraft.world.level.block;

import com.mojang.serialization.MapCodec;
import java.util.Collection;
import net.minecraft.core.BlockPos;
import net.minecraft.core.Direction;
import net.minecraft.sounds.SoundEvents;
import net.minecraft.sounds.SoundSource;
import net.minecraft.tags.BlockTags;
import net.minecraft.tags.TagKey;
import net.minecraft.util.Mth;
import net.minecraft.util.RandomSource;
import net.minecraft.world.level.BlockGetter;
import net.minecraft.world.level.LevelAccessor;
import net.minecraft.world.level.block.state.BlockBehaviour;
import net.minecraft.world.level.block.state.BlockState;
import net.minecraft.world.level.block.state.properties.BooleanProperty;
import net.minecraft.world.level.material.FluidState;
import net.minecraft.world.level.material.Fluids;

public class SculkVeinBlock extends MultifaceSpreadeableBlock implements SculkBehaviour {
	public static final MapCodec<SculkVeinBlock> CODEC = simpleCodec(SculkVeinBlock::new);
	private final MultifaceSpreader veinSpreader = new MultifaceSpreader(new SculkVeinBlock.SculkVeinSpreaderConfig(MultifaceSpreader.DEFAULT_SPREAD_ORDER));
	private final MultifaceSpreader sameSpaceSpreader = new MultifaceSpreader(
		new SculkVeinBlock.SculkVeinSpreaderConfig(MultifaceSpreader.SpreadType.SAME_POSITION)
	);

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

	public SculkVeinBlock(BlockBehaviour.Properties properties) {
		super(properties);
	}

	@Override
	public MultifaceSpreader getSpreader() {
		return this.veinSpreader;
	}

	public MultifaceSpreader getSameSpaceSpreader() {
		return this.sameSpaceSpreader;
	}

	public static boolean regrow(LevelAccessor level, BlockPos pos, BlockState state, Collection<Direction> directions) {
		boolean bl = false;
		BlockState blockState = Blocks.SCULK_VEIN.defaultBlockState();

		for (Direction direction : directions) {
			if (canAttachTo(level, pos, direction)) {
				blockState = blockState.setValue(getFaceProperty(direction), true);
				bl = true;
			}
		}

		if (!bl) {
			return false;
		} else {
			if (!state.getFluidState().isEmpty()) {
				blockState = blockState.setValue(MultifaceBlock.WATERLOGGED, true);
			}

			level.setBlock(pos, blockState, 3);
			return true;
		}
	}

	@Override
	public void onDischarged(LevelAccessor level, BlockState state, BlockPos pos, RandomSource random) {
		if (state.is(this)) {
			for (Direction direction : DIRECTIONS) {
				BooleanProperty booleanProperty = getFaceProperty(direction);
				if ((Boolean)state.getValue(booleanProperty) && level.getBlockState(pos.relative(direction)).is(Blocks.SCULK)) {
					state = state.setValue(booleanProperty, false);
				}
			}

			if (!hasAnyFace(state)) {
				FluidState fluidState = level.getFluidState(pos);
				state = (fluidState.isEmpty() ? Blocks.AIR : Blocks.WATER).defaultBlockState();
			}

			level.setBlock(pos, state, 3);
			SculkBehaviour.super.onDischarged(level, state, pos, random);
		}
	}

	@Override
	public int attemptUseCharge(
		SculkSpreader.ChargeCursor cursor, LevelAccessor level, BlockPos pos, RandomSource random, SculkSpreader spreader, boolean shouldConvertBlocks
	) {
		if (shouldConvertBlocks && this.attemptPlaceSculk(spreader, level, cursor.getPos(), random)) {
			return cursor.getCharge() - 1;
		} else {
			return random.nextInt(spreader.chargeDecayRate()) == 0 ? Mth.floor(cursor.getCharge() * 0.5F) : cursor.getCharge();
		}
	}

	private boolean attemptPlaceSculk(SculkSpreader spreader, LevelAccessor level, BlockPos pos, RandomSource random) {
		BlockState blockState = level.getBlockState(pos);
		TagKey<Block> tagKey = spreader.replaceableBlocks();

		for (Direction direction : Direction.allShuffled(random)) {
			if (hasFace(blockState, direction)) {
				BlockPos blockPos = pos.relative(direction);
				BlockState blockState2 = level.getBlockState(blockPos);
				if (blockState2.is(tagKey)) {
					BlockState blockState3 = Blocks.SCULK.defaultBlockState();
					level.setBlock(blockPos, blockState3, 3);
					Block.pushEntitiesUp(blockState2, blockState3, level, blockPos);
					level.playSound(null, blockPos, SoundEvents.SCULK_BLOCK_SPREAD, SoundSource.BLOCKS, 1.0F, 1.0F);
					this.veinSpreader.spreadAll(blockState3, level, blockPos, spreader.isWorldGeneration());
					Direction direction2 = direction.getOpposite();

					for (Direction direction3 : DIRECTIONS) {
						if (direction3 != direction2) {
							BlockPos blockPos2 = blockPos.relative(direction3);
							BlockState blockState4 = level.getBlockState(blockPos2);
							if (blockState4.is(this)) {
								this.onDischarged(level, blockState4, blockPos2, random);
							}
						}
					}

					return true;
				}
			}
		}

		return false;
	}

	public static boolean hasSubstrateAccess(LevelAccessor level, BlockState state, BlockPos pos) {
		if (!state.is(Blocks.SCULK_VEIN)) {
			return false;
		} else {
			for (Direction direction : DIRECTIONS) {
				if (hasFace(state, direction) && level.getBlockState(pos.relative(direction)).is(BlockTags.SCULK_REPLACEABLE)) {
					return true;
				}
			}

			return false;
		}
	}

	class SculkVeinSpreaderConfig extends MultifaceSpreader.DefaultSpreaderConfig {
		private final MultifaceSpreader.SpreadType[] spreadTypes;

		public SculkVeinSpreaderConfig(final MultifaceSpreader.SpreadType... spreadTypes) {
			super(SculkVeinBlock.this);
			this.spreadTypes = spreadTypes;
		}

		@Override
		public boolean stateCanBeReplaced(BlockGetter level, BlockPos pos, BlockPos spreadPos, Direction direction, BlockState state) {
			BlockState blockState = level.getBlockState(spreadPos.relative(direction));
			if (!blockState.is(Blocks.SCULK) && !blockState.is(Blocks.SCULK_CATALYST) && !blockState.is(Blocks.MOVING_PISTON)) {
				if (pos.distManhattan(spreadPos) == 2) {
					BlockPos blockPos = pos.relative(direction.getOpposite());
					if (level.getBlockState(blockPos).isFaceSturdy(level, blockPos, direction)) {
						return false;
					}
				}

				FluidState fluidState = state.getFluidState();
				if (!fluidState.isEmpty() && !fluidState.is(Fluids.WATER)) {
					return false;
				} else {
					return state.is(BlockTags.FIRE) ? false : state.canBeReplaced() || super.stateCanBeReplaced(level, pos, spreadPos, direction, state);
				}
			} else {
				return false;
			}
		}

		@Override
		public MultifaceSpreader.SpreadType[] getSpreadTypes() {
			return this.spreadTypes;
		}

		@Override
		public boolean isOtherBlockValidAsSource(BlockState otherBlock) {
			return !otherBlock.is(Blocks.SCULK_VEIN);
		}
	}
}