213 lines
7.7 KiB
Java
213 lines
7.7 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.server.level.ServerLevel;
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import net.minecraft.util.RandomSource;
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import net.minecraft.world.entity.LivingEntity;
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import net.minecraft.world.item.ItemStack;
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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.Level;
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import net.minecraft.world.level.LevelReader;
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import net.minecraft.world.level.SignalGetter;
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import net.minecraft.world.level.block.entity.BlockEntity;
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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.BlockStateProperties;
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import net.minecraft.world.level.block.state.properties.BooleanProperty;
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import net.minecraft.world.level.redstone.ExperimentalRedstoneUtils;
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import net.minecraft.world.level.redstone.Orientation;
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import net.minecraft.world.phys.shapes.CollisionContext;
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import net.minecraft.world.phys.shapes.VoxelShape;
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import net.minecraft.world.ticks.TickPriority;
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import org.jetbrains.annotations.Nullable;
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public abstract class DiodeBlock extends HorizontalDirectionalBlock {
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public static final BooleanProperty POWERED = BlockStateProperties.POWERED;
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private static final VoxelShape SHAPE = Block.column(16.0, 0.0, 2.0);
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protected DiodeBlock(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 DiodeBlock> codec();
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@Override
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protected VoxelShape getShape(BlockState state, BlockGetter level, BlockPos pos, CollisionContext context) {
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return SHAPE;
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}
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@Override
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protected boolean canSurvive(BlockState state, LevelReader level, BlockPos pos) {
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BlockPos blockPos = pos.below();
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return this.canSurviveOn(level, blockPos, level.getBlockState(blockPos));
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}
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protected boolean canSurviveOn(LevelReader level, BlockPos pos, BlockState state) {
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return state.isFaceSturdy(level, pos, Direction.UP, SupportType.RIGID);
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}
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@Override
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protected void tick(BlockState state, ServerLevel level, BlockPos pos, RandomSource random) {
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if (!this.isLocked(level, pos, state)) {
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boolean bl = (Boolean)state.getValue(POWERED);
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boolean bl2 = this.shouldTurnOn(level, pos, state);
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if (bl && !bl2) {
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level.setBlock(pos, state.setValue(POWERED, false), 2);
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} else if (!bl) {
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level.setBlock(pos, state.setValue(POWERED, true), 2);
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if (!bl2) {
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level.scheduleTick(pos, this, this.getDelay(state), TickPriority.VERY_HIGH);
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}
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}
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}
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}
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@Override
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protected int getDirectSignal(BlockState state, BlockGetter level, BlockPos pos, Direction direction) {
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return state.getSignal(level, pos, direction);
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}
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@Override
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protected int getSignal(BlockState state, BlockGetter level, BlockPos pos, Direction direction) {
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if (!(Boolean)state.getValue(POWERED)) {
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return 0;
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} else {
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return state.getValue(FACING) == direction ? this.getOutputSignal(level, pos, state) : 0;
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}
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}
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@Override
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protected void neighborChanged(BlockState state, Level level, BlockPos pos, Block neighborBlock, @Nullable Orientation orientation, boolean movedByPiston) {
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if (state.canSurvive(level, pos)) {
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this.checkTickOnNeighbor(level, pos, state);
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} else {
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BlockEntity blockEntity = state.hasBlockEntity() ? level.getBlockEntity(pos) : null;
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dropResources(state, level, pos, blockEntity);
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level.removeBlock(pos, false);
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for (Direction direction : Direction.values()) {
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level.updateNeighborsAt(pos.relative(direction), this);
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}
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}
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}
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/**
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* Check the output signal of this diode and schedule a new block tick if it should change.
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*/
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protected void checkTickOnNeighbor(Level level, BlockPos pos, BlockState state) {
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if (!this.isLocked(level, pos, state)) {
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boolean bl = (Boolean)state.getValue(POWERED);
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boolean bl2 = this.shouldTurnOn(level, pos, state);
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if (bl != bl2 && !level.getBlockTicks().willTickThisTick(pos, this)) {
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TickPriority tickPriority = TickPriority.HIGH;
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if (this.shouldPrioritize(level, pos, state)) {
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tickPriority = TickPriority.EXTREMELY_HIGH;
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} else if (bl) {
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tickPriority = TickPriority.VERY_HIGH;
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}
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level.scheduleTick(pos, this, this.getDelay(state), tickPriority);
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}
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}
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}
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/**
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* Check if neighboring blocks are locking this diode.
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*/
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public boolean isLocked(LevelReader level, BlockPos pos, BlockState state) {
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return false;
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}
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protected boolean shouldTurnOn(Level level, BlockPos pos, BlockState state) {
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return this.getInputSignal(level, pos, state) > 0;
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}
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protected int getInputSignal(Level level, BlockPos pos, BlockState state) {
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Direction direction = state.getValue(FACING);
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BlockPos blockPos = pos.relative(direction);
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int i = level.getSignal(blockPos, direction);
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if (i >= 15) {
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return i;
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} else {
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BlockState blockState = level.getBlockState(blockPos);
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return Math.max(i, blockState.is(Blocks.REDSTONE_WIRE) ? (Integer)blockState.getValue(RedStoneWireBlock.POWER) : 0);
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}
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}
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protected int getAlternateSignal(SignalGetter level, BlockPos pos, BlockState state) {
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Direction direction = state.getValue(FACING);
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Direction direction2 = direction.getClockWise();
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Direction direction3 = direction.getCounterClockWise();
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boolean bl = this.sideInputDiodesOnly();
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return Math.max(level.getControlInputSignal(pos.relative(direction2), direction2, bl), level.getControlInputSignal(pos.relative(direction3), direction3, bl));
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}
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@Override
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protected boolean isSignalSource(BlockState state) {
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return true;
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}
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@Override
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public BlockState getStateForPlacement(BlockPlaceContext context) {
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return this.defaultBlockState().setValue(FACING, context.getHorizontalDirection().getOpposite());
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}
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@Override
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public void setPlacedBy(Level level, BlockPos pos, BlockState state, LivingEntity placer, ItemStack stack) {
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if (this.shouldTurnOn(level, pos, state)) {
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level.scheduleTick(pos, this, 1);
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}
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}
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@Override
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protected void onPlace(BlockState state, Level level, BlockPos pos, BlockState oldState, boolean movedByPiston) {
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this.updateNeighborsInFront(level, pos, state);
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}
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@Override
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protected void affectNeighborsAfterRemoval(BlockState state, ServerLevel level, BlockPos pos, boolean movedByPiston) {
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if (!movedByPiston) {
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this.updateNeighborsInFront(level, pos, state);
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}
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}
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protected void updateNeighborsInFront(Level level, BlockPos pos, BlockState state) {
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Direction direction = state.getValue(FACING);
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BlockPos blockPos = pos.relative(direction.getOpposite());
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Orientation orientation = ExperimentalRedstoneUtils.initialOrientation(level, direction.getOpposite(), Direction.UP);
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level.neighborChanged(blockPos, this, orientation);
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level.updateNeighborsAtExceptFromFacing(blockPos, this, direction, orientation);
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}
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protected boolean sideInputDiodesOnly() {
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return false;
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}
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protected int getOutputSignal(BlockGetter level, BlockPos pos, BlockState state) {
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return 15;
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}
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public static boolean isDiode(BlockState state) {
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return state.getBlock() instanceof DiodeBlock;
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}
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/**
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* Check if this diode should have a higher tick priority than default.
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*
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* <p>
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* Both repeaters and comparators use this method to increase their tick priorities
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* when facing other diodes. This makes certain monostable circuits based on the repeater locking
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* mechanic more reliable.
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*/
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public boolean shouldPrioritize(BlockGetter level, BlockPos pos, BlockState state) {
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Direction direction = ((Direction)state.getValue(FACING)).getOpposite();
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BlockState blockState = level.getBlockState(pos.relative(direction));
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return isDiode(blockState) && blockState.getValue(FACING) != direction;
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}
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protected abstract int getDelay(BlockState state);
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}
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