84 lines
2.9 KiB
Java
84 lines
2.9 KiB
Java
package net.minecraft.world.level.block;
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import com.mojang.serialization.MapCodec;
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import net.minecraft.core.BlockPos;
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import net.minecraft.core.Direction;
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import net.minecraft.util.RandomSource;
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import net.minecraft.world.item.context.BlockPlaceContext;
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import net.minecraft.world.level.LevelReader;
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import net.minecraft.world.level.ScheduledTickAccess;
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import net.minecraft.world.level.block.state.BlockBehaviour;
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import net.minecraft.world.level.block.state.BlockState;
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import net.minecraft.world.level.block.state.properties.AttachFace;
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import net.minecraft.world.level.block.state.properties.BlockStateProperties;
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import net.minecraft.world.level.block.state.properties.EnumProperty;
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import org.jetbrains.annotations.Nullable;
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public abstract class FaceAttachedHorizontalDirectionalBlock extends HorizontalDirectionalBlock {
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public static final EnumProperty<AttachFace> FACE = BlockStateProperties.ATTACH_FACE;
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protected FaceAttachedHorizontalDirectionalBlock(BlockBehaviour.Properties properties) {
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super(properties);
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}
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@Override
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protected abstract MapCodec<? extends FaceAttachedHorizontalDirectionalBlock> codec();
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@Override
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protected boolean canSurvive(BlockState state, LevelReader level, BlockPos pos) {
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return canAttach(level, pos, getConnectedDirection(state).getOpposite());
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}
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public static boolean canAttach(LevelReader reader, BlockPos pos, Direction direction) {
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BlockPos blockPos = pos.relative(direction);
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return reader.getBlockState(blockPos).isFaceSturdy(reader, blockPos, direction.getOpposite());
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}
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@Nullable
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@Override
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public BlockState getStateForPlacement(BlockPlaceContext context) {
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for (Direction direction : context.getNearestLookingDirections()) {
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BlockState blockState;
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if (direction.getAxis() == Direction.Axis.Y) {
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blockState = this.defaultBlockState()
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.setValue(FACE, direction == Direction.UP ? AttachFace.CEILING : AttachFace.FLOOR)
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.setValue(FACING, context.getHorizontalDirection());
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} else {
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blockState = this.defaultBlockState().setValue(FACE, AttachFace.WALL).setValue(FACING, direction.getOpposite());
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}
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if (blockState.canSurvive(context.getLevel(), context.getClickedPos())) {
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return blockState;
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}
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}
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return null;
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}
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@Override
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protected BlockState updateShape(
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BlockState state,
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LevelReader level,
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ScheduledTickAccess scheduledTickAccess,
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BlockPos pos,
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Direction direction,
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BlockPos neighborPos,
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BlockState neighborState,
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RandomSource random
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) {
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return getConnectedDirection(state).getOpposite() == direction && !state.canSurvive(level, pos)
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? Blocks.AIR.defaultBlockState()
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: super.updateShape(state, level, scheduledTickAccess, pos, direction, neighborPos, neighborState, random);
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}
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protected static Direction getConnectedDirection(BlockState state) {
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switch ((AttachFace)state.getValue(FACE)) {
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case CEILING:
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return Direction.DOWN;
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case FLOOR:
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return Direction.UP;
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default:
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return state.getValue(FACING);
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}
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}
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}
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