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

package net.minecraft.world.level.block;

import com.mojang.serialization.MapCodec;
import java.util.Optional;
import net.minecraft.core.BlockPos;
import net.minecraft.core.Direction;
import net.minecraft.core.particles.ParticleTypes;
import net.minecraft.server.level.ServerLevel;
import net.minecraft.sounds.SoundEvent;
import net.minecraft.sounds.SoundEvents;
import net.minecraft.sounds.SoundSource;
import net.minecraft.util.RandomSource;
import net.minecraft.world.entity.Entity;
import net.minecraft.world.entity.InsideBlockEffectApplier;
import net.minecraft.world.entity.LivingEntity;
import net.minecraft.world.item.ItemStack;
import net.minecraft.world.item.Items;
import net.minecraft.world.level.BlockGetter;
import net.minecraft.world.level.Level;
import net.minecraft.world.level.LevelAccessor;
import net.minecraft.world.level.LevelReader;
import net.minecraft.world.level.ScheduledTickAccess;
import net.minecraft.world.level.block.state.BlockBehaviour;
import net.minecraft.world.level.block.state.BlockState;
import net.minecraft.world.level.block.state.StateDefinition.Builder;
import net.minecraft.world.level.block.state.properties.BlockStateProperties;
import net.minecraft.world.level.block.state.properties.BooleanProperty;
import net.minecraft.world.level.material.FluidState;
import net.minecraft.world.level.material.Fluids;
import net.minecraft.world.phys.shapes.CollisionContext;
import net.minecraft.world.phys.shapes.Shapes;
import net.minecraft.world.phys.shapes.VoxelShape;
import org.jetbrains.annotations.Nullable;

public class BubbleColumnBlock extends Block implements BucketPickup {
	public static final MapCodec<BubbleColumnBlock> CODEC = simpleCodec(BubbleColumnBlock::new);
	public static final BooleanProperty DRAG_DOWN = BlockStateProperties.DRAG;
	private static final int CHECK_PERIOD = 5;

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

	public BubbleColumnBlock(BlockBehaviour.Properties properties) {
		super(properties);
		this.registerDefaultState(this.stateDefinition.any().setValue(DRAG_DOWN, true));
	}

	@Override
	protected void entityInside(BlockState state, Level level, BlockPos pos, Entity entity, InsideBlockEffectApplier effectApplier) {
		BlockState blockState = level.getBlockState(pos.above());
		boolean bl = blockState.getCollisionShape(level, pos).isEmpty() && blockState.getFluidState().isEmpty();
		if (bl) {
			entity.onAboveBubbleColumn((Boolean)state.getValue(DRAG_DOWN), pos);
		} else {
			entity.onInsideBubbleColumn((Boolean)state.getValue(DRAG_DOWN));
		}
	}

	@Override
	protected void tick(BlockState state, ServerLevel level, BlockPos pos, RandomSource random) {
		updateColumn(level, pos, state, level.getBlockState(pos.below()));
	}

	@Override
	protected FluidState getFluidState(BlockState state) {
		return Fluids.WATER.getSource(false);
	}

	public static void updateColumn(LevelAccessor level, BlockPos pos, BlockState state) {
		updateColumn(level, pos, level.getBlockState(pos), state);
	}

	public static void updateColumn(LevelAccessor level, BlockPos pos, BlockState fluid, BlockState state) {
		if (canExistIn(fluid)) {
			BlockState blockState = getColumnState(state);
			level.setBlock(pos, blockState, 2);
			BlockPos.MutableBlockPos mutableBlockPos = pos.mutable().move(Direction.UP);

			while (canExistIn(level.getBlockState(mutableBlockPos))) {
				if (!level.setBlock(mutableBlockPos, blockState, 2)) {
					return;
				}

				mutableBlockPos.move(Direction.UP);
			}
		}
	}

	private static boolean canExistIn(BlockState blockState) {
		return blockState.is(Blocks.BUBBLE_COLUMN)
			|| blockState.is(Blocks.WATER) && blockState.getFluidState().getAmount() >= 8 && blockState.getFluidState().isSource();
	}

	private static BlockState getColumnState(BlockState blockState) {
		if (blockState.is(Blocks.BUBBLE_COLUMN)) {
			return blockState;
		} else if (blockState.is(Blocks.SOUL_SAND)) {
			return Blocks.BUBBLE_COLUMN.defaultBlockState().setValue(DRAG_DOWN, false);
		} else {
			return blockState.is(Blocks.MAGMA_BLOCK) ? Blocks.BUBBLE_COLUMN.defaultBlockState().setValue(DRAG_DOWN, true) : Blocks.WATER.defaultBlockState();
		}
	}

	@Override
	public void animateTick(BlockState state, Level level, BlockPos pos, RandomSource random) {
		double d = pos.getX();
		double e = pos.getY();
		double f = pos.getZ();
		if ((Boolean)state.getValue(DRAG_DOWN)) {
			level.addAlwaysVisibleParticle(ParticleTypes.CURRENT_DOWN, d + 0.5, e + 0.8, f, 0.0, 0.0, 0.0);
			if (random.nextInt(200) == 0) {
				level.playLocalSound(
					d, e, f, SoundEvents.BUBBLE_COLUMN_WHIRLPOOL_AMBIENT, SoundSource.BLOCKS, 0.2F + random.nextFloat() * 0.2F, 0.9F + random.nextFloat() * 0.15F, false
				);
			}
		} else {
			level.addAlwaysVisibleParticle(ParticleTypes.BUBBLE_COLUMN_UP, d + 0.5, e, f + 0.5, 0.0, 0.04, 0.0);
			level.addAlwaysVisibleParticle(ParticleTypes.BUBBLE_COLUMN_UP, d + random.nextFloat(), e + random.nextFloat(), f + random.nextFloat(), 0.0, 0.04, 0.0);
			if (random.nextInt(200) == 0) {
				level.playLocalSound(
					d, e, f, SoundEvents.BUBBLE_COLUMN_UPWARDS_AMBIENT, SoundSource.BLOCKS, 0.2F + random.nextFloat() * 0.2F, 0.9F + random.nextFloat() * 0.15F, false
				);
			}
		}
	}

	@Override
	protected BlockState updateShape(
		BlockState state,
		LevelReader level,
		ScheduledTickAccess scheduledTickAccess,
		BlockPos pos,
		Direction direction,
		BlockPos neighborPos,
		BlockState neighborState,
		RandomSource random
	) {
		scheduledTickAccess.scheduleTick(pos, Fluids.WATER, Fluids.WATER.getTickDelay(level));
		if (!state.canSurvive(level, pos)
			|| direction == Direction.DOWN
			|| direction == Direction.UP && !neighborState.is(Blocks.BUBBLE_COLUMN) && canExistIn(neighborState)) {
			scheduledTickAccess.scheduleTick(pos, this, 5);
		}

		return super.updateShape(state, level, scheduledTickAccess, pos, direction, neighborPos, neighborState, random);
	}

	@Override
	protected boolean canSurvive(BlockState state, LevelReader level, BlockPos pos) {
		BlockState blockState = level.getBlockState(pos.below());
		return blockState.is(Blocks.BUBBLE_COLUMN) || blockState.is(Blocks.MAGMA_BLOCK) || blockState.is(Blocks.SOUL_SAND);
	}

	@Override
	protected VoxelShape getShape(BlockState state, BlockGetter level, BlockPos pos, CollisionContext context) {
		return Shapes.empty();
	}

	@Override
	protected RenderShape getRenderShape(BlockState state) {
		return RenderShape.INVISIBLE;
	}

	@Override
	protected void createBlockStateDefinition(Builder<Block, BlockState> builder) {
		builder.add(DRAG_DOWN);
	}

	@Override
	public ItemStack pickupBlock(@Nullable LivingEntity owner, LevelAccessor level, BlockPos pos, BlockState state) {
		level.setBlock(pos, Blocks.AIR.defaultBlockState(), 11);
		return new ItemStack(Items.WATER_BUCKET);
	}

	@Override
	public Optional<SoundEvent> getPickupSound() {
		return Fluids.WATER.getPickupSound();
	}
}