228 lines
9.7 KiB
Java
228 lines
9.7 KiB
Java
package net.minecraft.world.level.block;
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import com.mojang.math.OctahedralGroup;
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import com.mojang.math.Quadrant;
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import com.mojang.serialization.MapCodec;
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import com.mojang.serialization.codecs.RecordCodecBuilder;
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import java.util.Map;
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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.BlockGetter;
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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.StateDefinition;
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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.BooleanProperty;
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import net.minecraft.world.level.block.state.properties.EnumProperty;
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import net.minecraft.world.level.block.state.properties.Half;
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import net.minecraft.world.level.block.state.properties.StairsShape;
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import net.minecraft.world.level.material.FluidState;
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import net.minecraft.world.level.material.Fluids;
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import net.minecraft.world.level.pathfinder.PathComputationType;
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import net.minecraft.world.phys.shapes.CollisionContext;
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import net.minecraft.world.phys.shapes.Shapes;
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import net.minecraft.world.phys.shapes.VoxelShape;
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public class StairBlock extends Block implements SimpleWaterloggedBlock {
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public static final MapCodec<StairBlock> CODEC = RecordCodecBuilder.mapCodec(
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instance -> instance.group(BlockState.CODEC.fieldOf("base_state").forGetter(stairBlock -> stairBlock.baseState), propertiesCodec())
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.apply(instance, StairBlock::new)
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);
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public static final EnumProperty<Direction> FACING = HorizontalDirectionalBlock.FACING;
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public static final EnumProperty<Half> HALF = BlockStateProperties.HALF;
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public static final EnumProperty<StairsShape> SHAPE = BlockStateProperties.STAIRS_SHAPE;
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public static final BooleanProperty WATERLOGGED = BlockStateProperties.WATERLOGGED;
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private static final VoxelShape SHAPE_OUTER = Shapes.or(Block.column(16.0, 0.0, 8.0), Block.box(0.0, 8.0, 0.0, 8.0, 16.0, 8.0));
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private static final VoxelShape SHAPE_STRAIGHT = Shapes.or(SHAPE_OUTER, Shapes.rotate(SHAPE_OUTER, OctahedralGroup.fromXYAngles(Quadrant.R0, Quadrant.R90)));
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private static final VoxelShape SHAPE_INNER = Shapes.or(SHAPE_STRAIGHT, Shapes.rotate(SHAPE_STRAIGHT, OctahedralGroup.fromXYAngles(Quadrant.R0, Quadrant.R90)));
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private static final Map<Direction, VoxelShape> SHAPE_BOTTOM_OUTER = Shapes.rotateHorizontal(SHAPE_OUTER);
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private static final Map<Direction, VoxelShape> SHAPE_BOTTOM_STRAIGHT = Shapes.rotateHorizontal(SHAPE_STRAIGHT);
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private static final Map<Direction, VoxelShape> SHAPE_BOTTOM_INNER = Shapes.rotateHorizontal(SHAPE_INNER);
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private static final Map<Direction, VoxelShape> SHAPE_TOP_OUTER = Shapes.rotateHorizontal(Shapes.rotate(SHAPE_OUTER, OctahedralGroup.INVERT_Y));
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private static final Map<Direction, VoxelShape> SHAPE_TOP_STRAIGHT = Shapes.rotateHorizontal(Shapes.rotate(SHAPE_STRAIGHT, OctahedralGroup.INVERT_Y));
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private static final Map<Direction, VoxelShape> SHAPE_TOP_INNER = Shapes.rotateHorizontal(Shapes.rotate(SHAPE_INNER, OctahedralGroup.INVERT_Y));
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private final Block base;
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protected final BlockState baseState;
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@Override
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public MapCodec<? extends StairBlock> codec() {
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return CODEC;
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}
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protected StairBlock(BlockState baseState, BlockBehaviour.Properties properties) {
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super(properties);
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this.registerDefaultState(
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this.stateDefinition.any().setValue(FACING, Direction.NORTH).setValue(HALF, Half.BOTTOM).setValue(SHAPE, StairsShape.STRAIGHT).setValue(WATERLOGGED, false)
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);
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this.base = baseState.getBlock();
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this.baseState = baseState;
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}
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@Override
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protected boolean useShapeForLightOcclusion(BlockState state) {
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return true;
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}
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@Override
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protected VoxelShape getShape(BlockState state, BlockGetter level, BlockPos pos, CollisionContext context) {
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boolean bl = state.getValue(HALF) == Half.BOTTOM;
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Direction direction = state.getValue(FACING);
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Map var10000 = switch ((StairsShape)state.getValue(SHAPE)) {
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case STRAIGHT -> bl ? SHAPE_BOTTOM_STRAIGHT : SHAPE_TOP_STRAIGHT;
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case OUTER_LEFT, OUTER_RIGHT -> bl ? SHAPE_BOTTOM_OUTER : SHAPE_TOP_OUTER;
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case INNER_RIGHT, INNER_LEFT -> bl ? SHAPE_BOTTOM_INNER : SHAPE_TOP_INNER;
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};
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return (VoxelShape)var10000.get(switch ((StairsShape)state.getValue(SHAPE)) {
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case STRAIGHT, OUTER_LEFT, INNER_RIGHT -> direction;
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case INNER_LEFT -> direction.getCounterClockWise();
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case OUTER_RIGHT -> direction.getClockWise();
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});
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}
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@Override
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public float getExplosionResistance() {
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return this.base.getExplosionResistance();
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}
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@Override
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public BlockState getStateForPlacement(BlockPlaceContext context) {
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Direction direction = context.getClickedFace();
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BlockPos blockPos = context.getClickedPos();
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FluidState fluidState = context.getLevel().getFluidState(blockPos);
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BlockState blockState = this.defaultBlockState()
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.setValue(FACING, context.getHorizontalDirection())
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.setValue(
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HALF, direction != Direction.DOWN && (direction == Direction.UP || !(context.getClickLocation().y - blockPos.getY() > 0.5)) ? Half.BOTTOM : Half.TOP
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)
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.setValue(WATERLOGGED, fluidState.getType() == Fluids.WATER);
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return blockState.setValue(SHAPE, getStairsShape(blockState, context.getLevel(), blockPos));
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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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if ((Boolean)state.getValue(WATERLOGGED)) {
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scheduledTickAccess.scheduleTick(pos, Fluids.WATER, Fluids.WATER.getTickDelay(level));
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}
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return direction.getAxis().isHorizontal()
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? state.setValue(SHAPE, getStairsShape(state, level, pos))
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: super.updateShape(state, level, scheduledTickAccess, pos, direction, neighborPos, neighborState, random);
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}
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/**
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* Returns a stair shape property based on the surrounding stairs from the given blockstate and position
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*/
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private static StairsShape getStairsShape(BlockState state, BlockGetter level, BlockPos pos) {
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Direction direction = state.getValue(FACING);
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BlockState blockState = level.getBlockState(pos.relative(direction));
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if (isStairs(blockState) && state.getValue(HALF) == blockState.getValue(HALF)) {
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Direction direction2 = blockState.getValue(FACING);
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if (direction2.getAxis() != ((Direction)state.getValue(FACING)).getAxis() && canTakeShape(state, level, pos, direction2.getOpposite())) {
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if (direction2 == direction.getCounterClockWise()) {
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return StairsShape.OUTER_LEFT;
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}
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return StairsShape.OUTER_RIGHT;
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}
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}
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BlockState blockState2 = level.getBlockState(pos.relative(direction.getOpposite()));
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if (isStairs(blockState2) && state.getValue(HALF) == blockState2.getValue(HALF)) {
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Direction direction3 = blockState2.getValue(FACING);
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if (direction3.getAxis() != ((Direction)state.getValue(FACING)).getAxis() && canTakeShape(state, level, pos, direction3)) {
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if (direction3 == direction.getCounterClockWise()) {
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return StairsShape.INNER_LEFT;
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}
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return StairsShape.INNER_RIGHT;
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}
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}
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return StairsShape.STRAIGHT;
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}
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private static boolean canTakeShape(BlockState state, BlockGetter level, BlockPos pos, Direction face) {
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BlockState blockState = level.getBlockState(pos.relative(face));
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return !isStairs(blockState) || blockState.getValue(FACING) != state.getValue(FACING) || blockState.getValue(HALF) != state.getValue(HALF);
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}
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public static boolean isStairs(BlockState state) {
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return state.getBlock() instanceof StairBlock;
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}
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@Override
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protected BlockState rotate(BlockState state, Rotation rotation) {
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return state.setValue(FACING, rotation.rotate(state.getValue(FACING)));
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}
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@Override
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protected BlockState mirror(BlockState state, Mirror mirror) {
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Direction direction = state.getValue(FACING);
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StairsShape stairsShape = state.getValue(SHAPE);
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switch (mirror) {
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case LEFT_RIGHT:
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if (direction.getAxis() == Direction.Axis.Z) {
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switch (stairsShape) {
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case OUTER_LEFT:
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return state.rotate(Rotation.CLOCKWISE_180).setValue(SHAPE, StairsShape.OUTER_RIGHT);
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case INNER_RIGHT:
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return state.rotate(Rotation.CLOCKWISE_180).setValue(SHAPE, StairsShape.INNER_LEFT);
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case INNER_LEFT:
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return state.rotate(Rotation.CLOCKWISE_180).setValue(SHAPE, StairsShape.INNER_RIGHT);
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case OUTER_RIGHT:
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return state.rotate(Rotation.CLOCKWISE_180).setValue(SHAPE, StairsShape.OUTER_LEFT);
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default:
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return state.rotate(Rotation.CLOCKWISE_180);
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}
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}
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break;
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case FRONT_BACK:
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if (direction.getAxis() == Direction.Axis.X) {
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switch (stairsShape) {
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case STRAIGHT:
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return state.rotate(Rotation.CLOCKWISE_180);
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case OUTER_LEFT:
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return state.rotate(Rotation.CLOCKWISE_180).setValue(SHAPE, StairsShape.OUTER_RIGHT);
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case INNER_RIGHT:
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return state.rotate(Rotation.CLOCKWISE_180).setValue(SHAPE, StairsShape.INNER_RIGHT);
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case INNER_LEFT:
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return state.rotate(Rotation.CLOCKWISE_180).setValue(SHAPE, StairsShape.INNER_LEFT);
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case OUTER_RIGHT:
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return state.rotate(Rotation.CLOCKWISE_180).setValue(SHAPE, StairsShape.OUTER_LEFT);
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}
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}
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}
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return super.mirror(state, mirror);
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}
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@Override
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protected void createBlockStateDefinition(StateDefinition.Builder<Block, BlockState> builder) {
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builder.add(FACING, HALF, SHAPE, WATERLOGGED);
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}
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@Override
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protected FluidState getFluidState(BlockState state) {
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return state.getValue(WATERLOGGED) ? Fluids.WATER.getSource(false) : super.getFluidState(state);
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}
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@Override
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protected boolean isPathfindable(BlockState state, PathComputationType pathComputationType) {
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return false;
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}
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}
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