minecraft-source/src/net/minecraft/world/level/block/LadderBlock.java

package net.minecraft.world.level.block;

import net.minecraft.world.level.block.state.AbstractStateHolder;
import net.minecraft.world.level.block.state.properties.BlockStateProperties;
import net.minecraft.world.level.block.state.StateDefinition;
import javax.annotation.Nullable;
import net.minecraft.world.level.material.FluidState;
import net.minecraft.world.item.BlockPlaceContext;
import net.minecraft.world.level.material.Fluids;
import net.minecraft.world.level.LevelAccessor;
import net.minecraft.world.level.LevelReader;
import net.minecraft.world.phys.shapes.CollisionContext;
import net.minecraft.core.BlockPos;
import net.minecraft.world.level.BlockGetter;
import net.minecraft.world.level.block.state.properties.Property;
import net.minecraft.core.Direction;
import net.minecraft.world.level.block.state.BlockState;
import net.minecraft.world.phys.shapes.VoxelShape;
import net.minecraft.world.level.block.state.properties.BooleanProperty;
import net.minecraft.world.level.block.state.properties.DirectionProperty;

public class LadderBlock extends Block implements SimpleWaterloggedBlock {
    public static final DirectionProperty FACING;
    public static final BooleanProperty WATERLOGGED;
    protected static final VoxelShape EAST_AABB;
    protected static final VoxelShape WEST_AABB;
    protected static final VoxelShape SOUTH_AABB;
    protected static final VoxelShape NORTH_AABB;
    
    protected LadderBlock(final Properties c) {
        super(c);
        this.registerDefaultState((((AbstractStateHolder<O, BlockState>)this.stateDefinition.any()).setValue((Property<Comparable>)LadderBlock.FACING, Direction.NORTH)).<Comparable, Boolean>setValue((Property<Comparable>)LadderBlock.WATERLOGGED, false));
    }
    
    @Override
    public VoxelShape getShape(final BlockState byg, final BlockGetter bjd, final BlockPos fk, final CollisionContext cvn) {
        switch (byg.<Direction>getValue((Property<Direction>)LadderBlock.FACING)) {
            case NORTH: {
                return LadderBlock.NORTH_AABB;
            }
            case SOUTH: {
                return LadderBlock.SOUTH_AABB;
            }
            case WEST: {
                return LadderBlock.WEST_AABB;
            }
            default: {
                return LadderBlock.EAST_AABB;
            }
        }
    }
    
    private boolean canAttachTo(final BlockGetter bjd, final BlockPos fk, final Direction fp) {
        final BlockState byg5 = bjd.getBlockState(fk);
        return !byg5.isSignalSource() && byg5.isFaceSturdy(bjd, fk, fp);
    }
    
    @Override
    public boolean canSurvive(final BlockState byg, final LevelReader bjw, final BlockPos fk) {
        final Direction fp5 = byg.<Direction>getValue((Property<Direction>)LadderBlock.FACING);
        return this.canAttachTo(bjw, fk.relative(fp5.getOpposite()), fp5);
    }
    
    @Override
    public BlockState updateShape(final BlockState byg1, final Direction fp, final BlockState byg3, final LevelAccessor bju, final BlockPos fk5, final BlockPos fk6) {
        if (fp.getOpposite() == byg1.<Direction>getValue((Property<Direction>)LadderBlock.FACING) && !byg1.canSurvive(bju, fk5)) {
            return Blocks.AIR.defaultBlockState();
        }
        if (byg1.<Boolean>getValue((Property<Boolean>)LadderBlock.WATERLOGGED)) {
            bju.getLiquidTicks().scheduleTick(fk5, Fluids.WATER, Fluids.WATER.getTickDelay(bju));
        }
        return super.updateShape(byg1, fp, byg3, bju, fk5, fk6);
    }
    
    @Nullable
    @Override
    public BlockState getStateForPlacement(final BlockPlaceContext bcn) {
        if (!bcn.replacingClickedOnBlock()) {
            final BlockState byg3 = bcn.getLevel().getBlockState(bcn.getClickedPos().relative(bcn.getClickedFace().getOpposite()));
            if (byg3.getBlock() == this && byg3.<Comparable>getValue((Property<Comparable>)LadderBlock.FACING) == bcn.getClickedFace()) {
                return null;
            }
        }
        BlockState byg3 = this.defaultBlockState();
        final LevelReader bjw4 = bcn.getLevel();
        final BlockPos fk5 = bcn.getClickedPos();
        final FluidState cog6 = bcn.getLevel().getFluidState(bcn.getClickedPos());
        for (final Direction fp10 : bcn.getNearestLookingDirections()) {
            if (fp10.getAxis().isHorizontal()) {
                byg3 = ((AbstractStateHolder<O, BlockState>)byg3).<Comparable, Direction>setValue((Property<Comparable>)LadderBlock.FACING, fp10.getOpposite());
                if (byg3.canSurvive(bjw4, fk5)) {
                    return ((AbstractStateHolder<O, BlockState>)byg3).<Comparable, Boolean>setValue((Property<Comparable>)LadderBlock.WATERLOGGED, cog6.getType() == Fluids.WATER);
                }
            }
        }
        return null;
    }
    
    @Override
    public BlockState rotate(final BlockState byg, final Rotation btr) {
        return ((AbstractStateHolder<O, BlockState>)byg).<Comparable, Direction>setValue((Property<Comparable>)LadderBlock.FACING, btr.rotate(byg.<Direction>getValue((Property<Direction>)LadderBlock.FACING)));
    }
    
    @Override
    public BlockState mirror(final BlockState byg, final Mirror bsr) {
        return byg.rotate(bsr.getRotation(byg.<Direction>getValue((Property<Direction>)LadderBlock.FACING)));
    }
    
    @Override
    protected void createBlockStateDefinition(final StateDefinition.Builder<Block, BlockState> a) {
        a.add(LadderBlock.FACING, LadderBlock.WATERLOGGED);
    }
    
    @Override
    public FluidState getFluidState(final BlockState byg) {
        if (byg.<Boolean>getValue((Property<Boolean>)LadderBlock.WATERLOGGED)) {
            return Fluids.WATER.getSource(false);
        }
        return super.getFluidState(byg);
    }
    
    static {
        FACING = HorizontalDirectionalBlock.FACING;
        WATERLOGGED = BlockStateProperties.WATERLOGGED;
        EAST_AABB = Block.box(0.0, 0.0, 0.0, 3.0, 16.0, 16.0);
        WEST_AABB = Block.box(13.0, 0.0, 0.0, 16.0, 16.0, 16.0);
        SOUTH_AABB = Block.box(0.0, 0.0, 0.0, 16.0, 16.0, 3.0);
        NORTH_AABB = Block.box(0.0, 0.0, 13.0, 16.0, 16.0, 16.0);
    }
}