minecraft-src/net/minecraft/world/item/BucketItem.java

package net.minecraft.world.item;

import net.minecraft.advancements.CriteriaTriggers;
import net.minecraft.core.BlockPos;
import net.minecraft.core.Direction;
import net.minecraft.core.particles.ParticleTypes;
import net.minecraft.server.level.ServerPlayer;
import net.minecraft.sounds.SoundEvent;
import net.minecraft.sounds.SoundEvents;
import net.minecraft.sounds.SoundSource;
import net.minecraft.stats.Stats;
import net.minecraft.tags.FluidTags;
import net.minecraft.world.InteractionHand;
import net.minecraft.world.InteractionResult;
import net.minecraft.world.entity.LivingEntity;
import net.minecraft.world.entity.player.Player;
import net.minecraft.world.level.Level;
import net.minecraft.world.level.LevelAccessor;
import net.minecraft.world.level.block.Block;
import net.minecraft.world.level.block.BucketPickup;
import net.minecraft.world.level.block.LiquidBlockContainer;
import net.minecraft.world.level.block.state.BlockState;
import net.minecraft.world.level.gameevent.GameEvent;
import net.minecraft.world.level.material.FlowingFluid;
import net.minecraft.world.level.material.Fluid;
import net.minecraft.world.level.material.Fluids;
import net.minecraft.world.phys.BlockHitResult;
import net.minecraft.world.phys.HitResult.Type;
import org.jetbrains.annotations.Nullable;

public class BucketItem extends Item implements DispensibleContainerItem {
	private final Fluid content;

	public BucketItem(Fluid content, Item.Properties properties) {
		super(properties);
		this.content = content;
	}

	@Override
	public InteractionResult use(Level level, Player player, InteractionHand hand) {
		ItemStack itemStack = player.getItemInHand(hand);
		BlockHitResult blockHitResult = getPlayerPOVHitResult(
			level, player, this.content == Fluids.EMPTY ? net.minecraft.world.level.ClipContext.Fluid.SOURCE_ONLY : net.minecraft.world.level.ClipContext.Fluid.NONE
		);
		if (blockHitResult.getType() == Type.MISS) {
			return InteractionResult.PASS;
		} else if (blockHitResult.getType() != Type.BLOCK) {
			return InteractionResult.PASS;
		} else {
			BlockPos blockPos = blockHitResult.getBlockPos();
			Direction direction = blockHitResult.getDirection();
			BlockPos blockPos2 = blockPos.relative(direction);
			if (!level.mayInteract(player, blockPos) || !player.mayUseItemAt(blockPos2, direction, itemStack)) {
				return InteractionResult.FAIL;
			} else if (this.content == Fluids.EMPTY) {
				BlockState blockState = level.getBlockState(blockPos);
				if (blockState.getBlock() instanceof BucketPickup bucketPickup) {
					ItemStack itemStack2 = bucketPickup.pickupBlock(player, level, blockPos, blockState);
					if (!itemStack2.isEmpty()) {
						player.awardStat(Stats.ITEM_USED.get(this));
						bucketPickup.getPickupSound().ifPresent(soundEvent -> player.playSound(soundEvent, 1.0F, 1.0F));
						level.gameEvent(player, GameEvent.FLUID_PICKUP, blockPos);
						ItemStack itemStack3 = ItemUtils.createFilledResult(itemStack, player, itemStack2);
						if (!level.isClientSide) {
							CriteriaTriggers.FILLED_BUCKET.trigger((ServerPlayer)player, itemStack2);
						}

						return InteractionResult.SUCCESS.heldItemTransformedTo(itemStack3);
					}
				}

				return InteractionResult.FAIL;
			} else {
				BlockState blockState = level.getBlockState(blockPos);
				BlockPos blockPos3 = blockState.getBlock() instanceof LiquidBlockContainer && this.content == Fluids.WATER ? blockPos : blockPos2;
				if (this.emptyContents(player, level, blockPos3, blockHitResult)) {
					this.checkExtraContent(player, level, itemStack, blockPos3);
					if (player instanceof ServerPlayer) {
						CriteriaTriggers.PLACED_BLOCK.trigger((ServerPlayer)player, blockPos3, itemStack);
					}

					player.awardStat(Stats.ITEM_USED.get(this));
					ItemStack itemStack2 = ItemUtils.createFilledResult(itemStack, player, getEmptySuccessItem(itemStack, player));
					return InteractionResult.SUCCESS.heldItemTransformedTo(itemStack2);
				} else {
					return InteractionResult.FAIL;
				}
			}
		}
	}

	public static ItemStack getEmptySuccessItem(ItemStack bucketStack, Player player) {
		return !player.hasInfiniteMaterials() ? new ItemStack(Items.BUCKET) : bucketStack;
	}

	@Override
	public void checkExtraContent(@Nullable LivingEntity entity, Level level, ItemStack stack, BlockPos pos) {
	}

	@Override
	public boolean emptyContents(@Nullable LivingEntity entity, Level level, BlockPos pos, @Nullable BlockHitResult hitResult) {
		if (!(this.content instanceof FlowingFluid flowingFluid)) {
			return false;
		} else {
			BlockState blockState = level.getBlockState(pos);
			Block block = blockState.getBlock();
			boolean bl = blockState.canBeReplaced(this.content);
			boolean bl2 = blockState.isAir()
				|| bl
				|| block instanceof LiquidBlockContainer liquidBlockContainer && liquidBlockContainer.canPlaceLiquid(entity, level, pos, blockState, this.content);
			if (!bl2) {
				return hitResult != null && this.emptyContents(entity, level, hitResult.getBlockPos().relative(hitResult.getDirection()), null);
			} else if (level.dimensionType().ultraWarm() && this.content.is(FluidTags.WATER)) {
				int i = pos.getX();
				int j = pos.getY();
				int k = pos.getZ();
				level.playSound(entity, pos, SoundEvents.FIRE_EXTINGUISH, SoundSource.BLOCKS, 0.5F, 2.6F + (level.random.nextFloat() - level.random.nextFloat()) * 0.8F);

				for (int l = 0; l < 8; l++) {
					level.addParticle(ParticleTypes.LARGE_SMOKE, i + Math.random(), j + Math.random(), k + Math.random(), 0.0, 0.0, 0.0);
				}

				return true;
			} else if (block instanceof LiquidBlockContainer liquidBlockContainerx && this.content == Fluids.WATER) {
				liquidBlockContainerx.placeLiquid(level, pos, blockState, flowingFluid.getSource(false));
				this.playEmptySound(entity, level, pos);
				return true;
			} else {
				if (!level.isClientSide && bl && !blockState.liquid()) {
					level.destroyBlock(pos, true);
				}

				if (!level.setBlock(pos, this.content.defaultFluidState().createLegacyBlock(), 11) && !blockState.getFluidState().isSource()) {
					return false;
				} else {
					this.playEmptySound(entity, level, pos);
					return true;
				}
			}
		}
	}

	protected void playEmptySound(@Nullable LivingEntity entity, LevelAccessor level, BlockPos pos) {
		SoundEvent soundEvent = this.content.is(FluidTags.LAVA) ? SoundEvents.BUCKET_EMPTY_LAVA : SoundEvents.BUCKET_EMPTY;
		level.playSound(entity, pos, soundEvent, SoundSource.BLOCKS, 1.0F, 1.0F);
		level.gameEvent(entity, GameEvent.FLUID_PLACE, pos);
	}
}