minecraft-src/net/minecraft/world/level/block/SmallDripleafBlock.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.server.level.ServerLevel;
import net.minecraft.tags.BlockTags;
import net.minecraft.util.RandomSource;
import net.minecraft.world.entity.LivingEntity;
import net.minecraft.world.item.ItemStack;
import net.minecraft.world.item.context.BlockPlaceContext;
import net.minecraft.world.level.BlockGetter;
import net.minecraft.world.level.Level;
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.block.state.properties.DoubleBlockHalf;
import net.minecraft.world.level.block.state.properties.EnumProperty;
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.VoxelShape;
import org.jetbrains.annotations.Nullable;

public class SmallDripleafBlock extends DoublePlantBlock implements BonemealableBlock, SimpleWaterloggedBlock {
	public static final MapCodec<SmallDripleafBlock> CODEC = simpleCodec(SmallDripleafBlock::new);
	private static final BooleanProperty WATERLOGGED = BlockStateProperties.WATERLOGGED;
	public static final EnumProperty<Direction> FACING = BlockStateProperties.HORIZONTAL_FACING;
	private static final VoxelShape SHAPE = Block.column(12.0, 0.0, 13.0);

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

	public SmallDripleafBlock(BlockBehaviour.Properties properties) {
		super(properties);
		this.registerDefaultState(this.stateDefinition.any().setValue(HALF, DoubleBlockHalf.LOWER).setValue(WATERLOGGED, false).setValue(FACING, Direction.NORTH));
	}

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

	@Override
	protected boolean mayPlaceOn(BlockState state, BlockGetter level, BlockPos pos) {
		return state.is(BlockTags.SMALL_DRIPLEAF_PLACEABLE) || level.getFluidState(pos.above()).isSourceOfType(Fluids.WATER) && super.mayPlaceOn(state, level, pos);
	}

	@Nullable
	@Override
	public BlockState getStateForPlacement(BlockPlaceContext context) {
		BlockState blockState = super.getStateForPlacement(context);
		return blockState != null
			? copyWaterloggedFrom(context.getLevel(), context.getClickedPos(), blockState.setValue(FACING, context.getHorizontalDirection().getOpposite()))
			: null;
	}

	@Override
	public void setPlacedBy(Level level, BlockPos pos, BlockState state, LivingEntity placer, ItemStack stack) {
		if (!level.isClientSide()) {
			BlockPos blockPos = pos.above();
			BlockState blockState = DoublePlantBlock.copyWaterloggedFrom(
				level, blockPos, this.defaultBlockState().setValue(HALF, DoubleBlockHalf.UPPER).setValue(FACING, (Direction)state.getValue(FACING))
			);
			level.setBlock(blockPos, blockState, 3);
		}
	}

	@Override
	protected FluidState getFluidState(BlockState state) {
		return state.getValue(WATERLOGGED) ? Fluids.WATER.getSource(false) : super.getFluidState(state);
	}

	@Override
	protected boolean canSurvive(BlockState state, LevelReader level, BlockPos pos) {
		if (state.getValue(HALF) == DoubleBlockHalf.UPPER) {
			return super.canSurvive(state, level, pos);
		} else {
			BlockPos blockPos = pos.below();
			BlockState blockState = level.getBlockState(blockPos);
			return this.mayPlaceOn(blockState, level, blockPos);
		}
	}

	@Override
	protected BlockState updateShape(
		BlockState state,
		LevelReader level,
		ScheduledTickAccess scheduledTickAccess,
		BlockPos pos,
		Direction direction,
		BlockPos neighborPos,
		BlockState neighborState,
		RandomSource random
	) {
		if ((Boolean)state.getValue(WATERLOGGED)) {
			scheduledTickAccess.scheduleTick(pos, Fluids.WATER, Fluids.WATER.getTickDelay(level));
		}

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

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

	@Override
	public boolean isValidBonemealTarget(LevelReader level, BlockPos pos, BlockState state) {
		return true;
	}

	@Override
	public boolean isBonemealSuccess(Level level, RandomSource random, BlockPos pos, BlockState state) {
		return true;
	}

	@Override
	public void performBonemeal(ServerLevel level, RandomSource random, BlockPos pos, BlockState state) {
		if (state.getValue(DoublePlantBlock.HALF) == DoubleBlockHalf.LOWER) {
			BlockPos blockPos = pos.above();
			level.setBlock(blockPos, level.getFluidState(blockPos).createLegacyBlock(), 18);
			BigDripleafBlock.placeWithRandomHeight(level, random, pos, state.getValue(FACING));
		} else {
			BlockPos blockPos = pos.below();
			this.performBonemeal(level, random, blockPos, level.getBlockState(blockPos));
		}
	}

	@Override
	protected BlockState rotate(BlockState state, Rotation rotation) {
		return state.setValue(FACING, rotation.rotate(state.getValue(FACING)));
	}

	@Override
	protected BlockState mirror(BlockState state, Mirror mirror) {
		return state.rotate(mirror.getRotation(state.getValue(FACING)));
	}

	@Override
	protected float getMaxVerticalOffset() {
		return 0.1F;
	}
}