minecraft_25w45a_unobfuscated/net/minecraft/world/level/block/SnowLayerBlock.java

/*
 * Decompiled with CFR 0.152.
 * 
 * Could not load the following classes:
 *  com.mojang.serialization.MapCodec
 *  org.jspecify.annotations.Nullable
 */
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.item.context.BlockPlaceContext;
import net.minecraft.world.level.BlockGetter;
import net.minecraft.world.level.LevelReader;
import net.minecraft.world.level.LightLayer;
import net.minecraft.world.level.ScheduledTickAccess;
import net.minecraft.world.level.block.Block;
import net.minecraft.world.level.block.Blocks;
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.pathfinder.PathComputationType;
import net.minecraft.world.phys.shapes.CollisionContext;
import net.minecraft.world.phys.shapes.VoxelShape;
import org.jspecify.annotations.Nullable;

public class SnowLayerBlock
extends Block {
    public static final MapCodec<SnowLayerBlock> CODEC = SnowLayerBlock.simpleCodec(SnowLayerBlock::new);
    public static final int MAX_HEIGHT = 8;
    public static final IntegerProperty LAYERS = BlockStateProperties.LAYERS;
    private static final VoxelShape[] SHAPES = Block.boxes(8, height -> Block.column(16.0, 0.0, height * 2));
    public static final int HEIGHT_IMPASSABLE = 5;

    public MapCodec<SnowLayerBlock> codec() {
        return CODEC;
    }

    protected SnowLayerBlock(BlockBehaviour.Properties properties) {
        super(properties);
        this.registerDefaultState((BlockState)((BlockState)this.stateDefinition.any()).setValue(LAYERS, 1));
    }

    @Override
    protected boolean isPathfindable(BlockState state, PathComputationType type) {
        if (type == PathComputationType.LAND) {
            return state.getValue(LAYERS) < 5;
        }
        return false;
    }

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

    @Override
    protected VoxelShape getCollisionShape(BlockState state, BlockGetter level, BlockPos pos, CollisionContext context) {
        return SHAPES[state.getValue(LAYERS) - 1];
    }

    @Override
    protected VoxelShape getBlockSupportShape(BlockState state, BlockGetter level, BlockPos pos) {
        return SHAPES[state.getValue(LAYERS)];
    }

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

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

    @Override
    protected float getShadeBrightness(BlockState state, BlockGetter level, BlockPos pos) {
        return state.getValue(LAYERS) == 8 ? 0.2f : 1.0f;
    }

    @Override
    protected boolean canSurvive(BlockState state, LevelReader level, BlockPos pos) {
        BlockState belowState = level.getBlockState(pos.below());
        if (belowState.is(BlockTags.SNOW_LAYER_CANNOT_SURVIVE_ON)) {
            return false;
        }
        if (belowState.is(BlockTags.SNOW_LAYER_CAN_SURVIVE_ON)) {
            return true;
        }
        return Block.isFaceFull(belowState.getCollisionShape(level, pos.below()), Direction.UP) || belowState.is(this) && belowState.getValue(LAYERS) == 8;
    }

    @Override
    protected BlockState updateShape(BlockState state, LevelReader level, ScheduledTickAccess ticks, BlockPos pos, Direction directionToNeighbour, BlockPos neighbourPos, BlockState neighbourState, RandomSource random) {
        if (!state.canSurvive(level, pos)) {
            return Blocks.AIR.defaultBlockState();
        }
        return super.updateShape(state, level, ticks, pos, directionToNeighbour, neighbourPos, neighbourState, random);
    }

    @Override
    protected void randomTick(BlockState state, ServerLevel level, BlockPos pos, RandomSource random) {
        if (level.getBrightness(LightLayer.BLOCK, pos) > 11) {
            SnowLayerBlock.dropResources(state, level, pos);
            level.removeBlock(pos, false);
        }
    }

    @Override
    protected boolean canBeReplaced(BlockState state, BlockPlaceContext context) {
        int layers = state.getValue(LAYERS);
        if (context.getItemInHand().is(this.asItem()) && layers < 8) {
            if (context.replacingClickedOnBlock()) {
                return context.getClickedFace() == Direction.UP;
            }
            return true;
        }
        return layers == 1;
    }

    @Override
    public @Nullable BlockState getStateForPlacement(BlockPlaceContext context) {
        BlockState state = context.getLevel().getBlockState(context.getClickedPos());
        if (state.is(this)) {
            int layers = state.getValue(LAYERS);
            return (BlockState)state.setValue(LAYERS, Math.min(8, layers + 1));
        }
        return super.getStateForPlacement(context);
    }

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