Code/net/minecraft/world/level/material/WaterFluid.java

package net.minecraft.world.level.material;

import java.util.Optional;
import javax.annotation.Nullable;
import net.minecraft.core.BlockPos;
import net.minecraft.core.Direction;
import net.minecraft.core.particles.ParticleOptions;
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.tags.FluidTags;
import net.minecraft.util.RandomSource;
import net.minecraft.world.entity.Entity;
import net.minecraft.world.entity.InsideBlockEffectApplier;
import net.minecraft.world.entity.InsideBlockEffectType;
import net.minecraft.world.item.Item;
import net.minecraft.world.item.Items;
import net.minecraft.world.level.BlockGetter;
import net.minecraft.world.level.GameRules;
import net.minecraft.world.level.Level;
import net.minecraft.world.level.LevelAccessor;
import net.minecraft.world.level.LevelReader;
import net.minecraft.world.level.block.Block;
import net.minecraft.world.level.block.Blocks;
import net.minecraft.world.level.block.LiquidBlock;
import net.minecraft.world.level.block.entity.BlockEntity;
import net.minecraft.world.level.block.state.BlockState;
import net.minecraft.world.level.block.state.StateDefinition;

public abstract class WaterFluid extends FlowingFluid {
    @Override
    public Fluid getFlowing() {
        return Fluids.FLOWING_WATER;
    }

    @Override
    public Fluid getSource() {
        return Fluids.WATER;
    }

    @Override
    public Item getBucket() {
        return Items.WATER_BUCKET;
    }

    @Override
    public void animateTick(Level p_230606_, BlockPos p_230607_, FluidState p_230608_, RandomSource p_230609_) {
        if (!p_230608_.isSource() && !p_230608_.getValue(FALLING)) {
            if (p_230609_.nextInt(64) == 0) {
                p_230606_.playLocalSound(
                    p_230607_.getX() + 0.5,
                    p_230607_.getY() + 0.5,
                    p_230607_.getZ() + 0.5,
                    SoundEvents.WATER_AMBIENT,
                    SoundSource.AMBIENT,
                    p_230609_.nextFloat() * 0.25F + 0.75F,
                    p_230609_.nextFloat() + 0.5F,
                    false
                );
            }
        } else if (p_230609_.nextInt(10) == 0) {
            p_230606_.addParticle(
                ParticleTypes.UNDERWATER,
                p_230607_.getX() + p_230609_.nextDouble(),
                p_230607_.getY() + p_230609_.nextDouble(),
                p_230607_.getZ() + p_230609_.nextDouble(),
                0.0,
                0.0,
                0.0
            );
        }
    }

    @Nullable
    @Override
    public ParticleOptions getDripParticle() {
        return ParticleTypes.DRIPPING_WATER;
    }

    @Override
    protected boolean canConvertToSource(ServerLevel p_361550_) {
        return p_361550_.getGameRules().getBoolean(GameRules.RULE_WATER_SOURCE_CONVERSION);
    }

    @Override
    protected void beforeDestroyingBlock(LevelAccessor p_76450_, BlockPos p_76451_, BlockState p_76452_) {
        BlockEntity blockentity = p_76452_.hasBlockEntity() ? p_76450_.getBlockEntity(p_76451_) : null;
        Block.dropResources(p_76452_, p_76450_, p_76451_, blockentity);
    }

    @Override
    protected void entityInside(Level p_392669_, BlockPos p_392690_, Entity p_394696_, InsideBlockEffectApplier p_394166_) {
        p_394166_.apply(InsideBlockEffectType.EXTINGUISH);
    }

    @Override
    public int getSlopeFindDistance(LevelReader p_76464_) {
        return 4;
    }

    @Override
    public BlockState createLegacyBlock(FluidState p_76466_) {
        return Blocks.WATER.defaultBlockState().setValue(LiquidBlock.LEVEL, getLegacyLevel(p_76466_));
    }

    @Override
    public boolean isSame(Fluid p_76456_) {
        return p_76456_ == Fluids.WATER || p_76456_ == Fluids.FLOWING_WATER;
    }

    @Override
    public int getDropOff(LevelReader p_76469_) {
        return 1;
    }

    @Override
    public int getTickDelay(LevelReader p_76454_) {
        return 5;
    }

    @Override
    public boolean canBeReplacedWith(FluidState p_76458_, BlockGetter p_76459_, BlockPos p_76460_, Fluid p_76461_, Direction p_76462_) {
        return p_76462_ == Direction.DOWN && !p_76461_.is(FluidTags.WATER);
    }

    @Override
    protected float getExplosionResistance() {
        return 100.0F;
    }

    @Override
    public Optional<SoundEvent> getPickupSound() {
        return Optional.of(SoundEvents.BUCKET_FILL);
    }

    public static class Flowing extends WaterFluid {
        @Override
        protected void createFluidStateDefinition(StateDefinition.Builder<Fluid, FluidState> p_76476_) {
            super.createFluidStateDefinition(p_76476_);
            p_76476_.add(LEVEL);
        }

        @Override
        public int getAmount(FluidState p_76480_) {
            return p_76480_.getValue(LEVEL);
        }

        @Override
        public boolean isSource(FluidState p_76478_) {
            return false;
        }
    }

    public static class Source extends WaterFluid {
        @Override
        public int getAmount(FluidState p_76485_) {
            return 8;
        }

        @Override
        public boolean isSource(FluidState p_76483_) {
            return true;
        }
    }
}