minecraft-src/net/minecraft/world/level/block/CakeBlock.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.sounds.SoundEvents;
import net.minecraft.sounds.SoundSource;
import net.minecraft.stats.Stats;
import net.minecraft.tags.ItemTags;
import net.minecraft.util.RandomSource;
import net.minecraft.world.InteractionHand;
import net.minecraft.world.InteractionResult;
import net.minecraft.world.entity.player.Player;
import net.minecraft.world.item.Item;
import net.minecraft.world.item.ItemStack;
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;
import net.minecraft.world.level.block.state.properties.BlockStateProperties;
import net.minecraft.world.level.block.state.properties.IntegerProperty;
import net.minecraft.world.level.gameevent.GameEvent;
import net.minecraft.world.level.pathfinder.PathComputationType;
import net.minecraft.world.phys.BlockHitResult;
import net.minecraft.world.phys.shapes.CollisionContext;
import net.minecraft.world.phys.shapes.VoxelShape;

public class CakeBlock extends Block {
	public static final MapCodec<CakeBlock> CODEC = simpleCodec(CakeBlock::new);
	public static final int MAX_BITES = 6;
	public static final IntegerProperty BITES = BlockStateProperties.BITES;
	public static final int FULL_CAKE_SIGNAL = getOutputSignal(0);
	private static final VoxelShape[] SHAPES = Block.boxes(6, i -> Block.box(1 + i * 2, 0.0, 1.0, 15.0, 8.0, 15.0));

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

	protected CakeBlock(BlockBehaviour.Properties properties) {
		super(properties);
		this.registerDefaultState(this.stateDefinition.any().setValue(BITES, 0));
	}

	@Override
	protected VoxelShape getShape(BlockState state, BlockGetter level, BlockPos pos, CollisionContext context) {
		return SHAPES[state.getValue(BITES)];
	}

	@Override
	protected InteractionResult useItemOn(
		ItemStack stack, BlockState state, Level level, BlockPos pos, Player player, InteractionHand hand, BlockHitResult hitResult
	) {
		Item item = stack.getItem();
		if (stack.is(ItemTags.CANDLES) && (Integer)state.getValue(BITES) == 0 && Block.byItem(item) instanceof CandleBlock candleBlock) {
			stack.consume(1, player);
			level.playSound(null, pos, SoundEvents.CAKE_ADD_CANDLE, SoundSource.BLOCKS, 1.0F, 1.0F);
			level.setBlockAndUpdate(pos, CandleCakeBlock.byCandle(candleBlock));
			level.gameEvent(player, GameEvent.BLOCK_CHANGE, pos);
			player.awardStat(Stats.ITEM_USED.get(item));
			return InteractionResult.SUCCESS;
		} else {
			return InteractionResult.TRY_WITH_EMPTY_HAND;
		}
	}

	@Override
	protected InteractionResult useWithoutItem(BlockState state, Level level, BlockPos pos, Player player, BlockHitResult hitResult) {
		if (level.isClientSide) {
			if (eat(level, pos, state, player).consumesAction()) {
				return InteractionResult.SUCCESS;
			}

			if (player.getItemInHand(InteractionHand.MAIN_HAND).isEmpty()) {
				return InteractionResult.CONSUME;
			}
		}

		return eat(level, pos, state, player);
	}

	protected static InteractionResult eat(LevelAccessor level, BlockPos pos, BlockState state, Player player) {
		if (!player.canEat(false)) {
			return InteractionResult.PASS;
		} else {
			player.awardStat(Stats.EAT_CAKE_SLICE);
			player.getFoodData().eat(2, 0.1F);
			int i = (Integer)state.getValue(BITES);
			level.gameEvent(player, GameEvent.EAT, pos);
			if (i < 6) {
				level.setBlock(pos, state.setValue(BITES, i + 1), 3);
			} else {
				level.removeBlock(pos, false);
				level.gameEvent(player, GameEvent.BLOCK_DESTROY, pos);
			}

			return InteractionResult.SUCCESS;
		}
	}

	@Override
	protected BlockState updateShape(
		BlockState state,
		LevelReader level,
		ScheduledTickAccess scheduledTickAccess,
		BlockPos pos,
		Direction direction,
		BlockPos neighborPos,
		BlockState neighborState,
		RandomSource random
	) {
		return direction == Direction.DOWN && !state.canSurvive(level, pos)
			? Blocks.AIR.defaultBlockState()
			: super.updateShape(state, level, scheduledTickAccess, pos, direction, neighborPos, neighborState, random);
	}

	@Override
	protected boolean canSurvive(BlockState state, LevelReader level, BlockPos pos) {
		return level.getBlockState(pos.below()).isSolid();
	}

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

	@Override
	protected int getAnalogOutputSignal(BlockState state, Level level, BlockPos pos) {
		return getOutputSignal((Integer)state.getValue(BITES));
	}

	public static int getOutputSignal(int eaten) {
		return (7 - eaten) * 2;
	}

	@Override
	protected boolean hasAnalogOutputSignal(BlockState state) {
		return true;
	}

	@Override
	protected boolean isPathfindable(BlockState state, PathComputationType pathComputationType) {
		return false;
	}
}