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

package net.minecraft.world.level.block;

import com.google.common.collect.Maps;
import com.mojang.serialization.MapCodec;
import com.mojang.serialization.codecs.RecordCodecBuilder;
import java.util.Map;
import net.minecraft.core.BlockPos;
import net.minecraft.core.Direction;
import net.minecraft.core.registries.BuiltInRegistries;
import net.minecraft.server.level.ServerLevel;
import net.minecraft.sounds.SoundSource;
import net.minecraft.stats.Stats;
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.BlockItem;
import net.minecraft.world.item.ItemStack;
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.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 FlowerPotBlock extends Block {
	public static final MapCodec<FlowerPotBlock> CODEC = RecordCodecBuilder.mapCodec(
		instance -> instance.group(BuiltInRegistries.BLOCK.byNameCodec().fieldOf("potted").forGetter(flowerPotBlock -> flowerPotBlock.potted), propertiesCodec())
			.apply(instance, FlowerPotBlock::new)
	);
	private static final Map<Block, Block> POTTED_BY_CONTENT = Maps.<Block, Block>newHashMap();
	private static final VoxelShape SHAPE = Block.column(6.0, 0.0, 6.0);
	private final Block potted;

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

	public FlowerPotBlock(Block potted, BlockBehaviour.Properties properties) {
		super(properties);
		this.potted = potted;
		POTTED_BY_CONTENT.put(potted, this);
	}

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

	@Override
	protected InteractionResult useItemOn(
		ItemStack stack, BlockState state, Level level, BlockPos pos, Player player, InteractionHand hand, BlockHitResult hitResult
	) {
		BlockState blockState = (stack.getItem() instanceof BlockItem blockItem
				? (Block)POTTED_BY_CONTENT.getOrDefault(blockItem.getBlock(), Blocks.AIR)
				: Blocks.AIR)
			.defaultBlockState();
		if (blockState.isAir()) {
			return InteractionResult.TRY_WITH_EMPTY_HAND;
		} else if (!this.isEmpty()) {
			return InteractionResult.CONSUME;
		} else {
			level.setBlock(pos, blockState, 3);
			level.gameEvent(player, GameEvent.BLOCK_CHANGE, pos);
			player.awardStat(Stats.POT_FLOWER);
			stack.consume(1, player);
			return InteractionResult.SUCCESS;
		}
	}

	@Override
	protected InteractionResult useWithoutItem(BlockState state, Level level, BlockPos pos, Player player, BlockHitResult hitResult) {
		if (this.isEmpty()) {
			return InteractionResult.CONSUME;
		} else {
			ItemStack itemStack = new ItemStack(this.potted);
			if (!player.addItem(itemStack)) {
				player.drop(itemStack, false);
			}

			level.setBlock(pos, Blocks.FLOWER_POT.defaultBlockState(), 3);
			level.gameEvent(player, GameEvent.BLOCK_CHANGE, pos);
			return InteractionResult.SUCCESS;
		}
	}

	@Override
	protected ItemStack getCloneItemStack(LevelReader level, BlockPos pos, BlockState state, boolean includeData) {
		return this.isEmpty() ? super.getCloneItemStack(level, pos, state, includeData) : new ItemStack(this.potted);
	}

	private boolean isEmpty() {
		return this.potted == Blocks.AIR;
	}

	@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);
	}

	public Block getPotted() {
		return this.potted;
	}

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

	@Override
	protected boolean isRandomlyTicking(BlockState state) {
		return state.is(Blocks.POTTED_OPEN_EYEBLOSSOM) || state.is(Blocks.POTTED_CLOSED_EYEBLOSSOM);
	}

	@Override
	protected void randomTick(BlockState state, ServerLevel level, BlockPos pos, RandomSource random) {
		if (this.isRandomlyTicking(state) && level.dimensionType().natural()) {
			boolean bl = this.potted == Blocks.OPEN_EYEBLOSSOM;
			boolean bl2 = CreakingHeartBlock.isNaturalNight(level);
			if (bl != bl2) {
				level.setBlock(pos, this.opposite(state), 3);
				EyeblossomBlock.Type type = EyeblossomBlock.Type.fromBoolean(bl).transform();
				type.spawnTransformParticle(level, pos, random);
				level.playSound(null, pos, type.longSwitchSound(), SoundSource.BLOCKS, 1.0F, 1.0F);
			}
		}

		super.randomTick(state, level, pos, random);
	}

	public BlockState opposite(BlockState state) {
		if (state.is(Blocks.POTTED_OPEN_EYEBLOSSOM)) {
			return Blocks.POTTED_CLOSED_EYEBLOSSOM.defaultBlockState();
		} else {
			return state.is(Blocks.POTTED_CLOSED_EYEBLOSSOM) ? Blocks.POTTED_OPEN_EYEBLOSSOM.defaultBlockState() : state;
		}
	}
}