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

package net.minecraft.world.level.block;

import com.mojang.serialization.MapCodec;
import com.mojang.serialization.codecs.RecordCodecBuilder;
import net.minecraft.core.BlockPos;
import net.minecraft.core.Direction;
import net.minecraft.server.level.ServerLevel;
import net.minecraft.util.RandomSource;
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.grower.TreeGrower;
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.IntegerProperty;
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 MangrovePropaguleBlock extends SaplingBlock implements SimpleWaterloggedBlock {
	public static final MapCodec<MangrovePropaguleBlock> CODEC = RecordCodecBuilder.mapCodec(
		instance -> instance.group(TreeGrower.CODEC.fieldOf("tree").forGetter(mangrovePropaguleBlock -> mangrovePropaguleBlock.treeGrower), propertiesCodec())
			.apply(instance, MangrovePropaguleBlock::new)
	);
	public static final IntegerProperty AGE = BlockStateProperties.AGE_4;
	public static final int MAX_AGE = 4;
	private static final int[] SHAPE_MIN_Y = new int[]{13, 10, 7, 3, 0};
	private static final VoxelShape[] SHAPE_PER_AGE = Block.boxes(4, i -> Block.column(2.0, SHAPE_MIN_Y[i], 16.0));
	private static final BooleanProperty WATERLOGGED = BlockStateProperties.WATERLOGGED;
	public static final BooleanProperty HANGING = BlockStateProperties.HANGING;

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

	public MangrovePropaguleBlock(TreeGrower treeGrower, BlockBehaviour.Properties properties) {
		super(treeGrower, properties);
		this.registerDefaultState(this.stateDefinition.any().setValue(STAGE, 0).setValue(AGE, 0).setValue(WATERLOGGED, false).setValue(HANGING, false));
	}

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

	@Override
	protected boolean mayPlaceOn(BlockState state, BlockGetter level, BlockPos pos) {
		return super.mayPlaceOn(state, level, pos) || state.is(Blocks.CLAY);
	}

	@Nullable
	@Override
	public BlockState getStateForPlacement(BlockPlaceContext context) {
		FluidState fluidState = context.getLevel().getFluidState(context.getClickedPos());
		boolean bl = fluidState.getType() == Fluids.WATER;
		return super.getStateForPlacement(context).setValue(WATERLOGGED, bl).setValue(AGE, 4);
	}

	@Override
	protected VoxelShape getShape(BlockState state, BlockGetter level, BlockPos pos, CollisionContext context) {
		int i = state.getValue(HANGING) ? (Integer)state.getValue(AGE) : 4;
		return SHAPE_PER_AGE[i].move(state.getOffset(pos));
	}

	@Override
	protected boolean canSurvive(BlockState state, LevelReader level, BlockPos pos) {
		return isHanging(state) ? level.getBlockState(pos.above()).is(Blocks.MANGROVE_LEAVES) : super.canSurvive(state, level, pos);
	}

	@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 direction == Direction.UP && !state.canSurvive(level, pos)
			? Blocks.AIR.defaultBlockState()
			: super.updateShape(state, level, scheduledTickAccess, pos, direction, neighborPos, neighborState, random);
	}

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

	@Override
	protected void randomTick(BlockState state, ServerLevel level, BlockPos pos, RandomSource random) {
		if (!isHanging(state)) {
			if (random.nextInt(7) == 0) {
				this.advanceTree(level, pos, state, random);
			}
		} else {
			if (!isFullyGrown(state)) {
				level.setBlock(pos, state.cycle(AGE), 2);
			}
		}
	}

	@Override
	public boolean isValidBonemealTarget(LevelReader level, BlockPos pos, BlockState state) {
		return !isHanging(state) || !isFullyGrown(state);
	}

	@Override
	public boolean isBonemealSuccess(Level level, RandomSource random, BlockPos pos, BlockState state) {
		return isHanging(state) ? !isFullyGrown(state) : super.isBonemealSuccess(level, random, pos, state);
	}

	@Override
	public void performBonemeal(ServerLevel level, RandomSource random, BlockPos pos, BlockState state) {
		if (isHanging(state) && !isFullyGrown(state)) {
			level.setBlock(pos, state.cycle(AGE), 2);
		} else {
			super.performBonemeal(level, random, pos, state);
		}
	}

	private static boolean isHanging(BlockState state) {
		return (Boolean)state.getValue(HANGING);
	}

	private static boolean isFullyGrown(BlockState state) {
		return (Integer)state.getValue(AGE) == 4;
	}

	public static BlockState createNewHangingPropagule() {
		return createNewHangingPropagule(0);
	}

	public static BlockState createNewHangingPropagule(int age) {
		return Blocks.MANGROVE_PROPAGULE.defaultBlockState().setValue(HANGING, true).setValue(AGE, age);
	}
}