package net.minecraft.world.level.block; import com.google.common.base.MoreObjects; import com.mojang.serialization.MapCodec; import java.util.Optional; import net.minecraft.core.BlockPos; import net.minecraft.core.Direction; import net.minecraft.server.level.ServerLevel; import net.minecraft.sounds.SoundEvents; import net.minecraft.sounds.SoundSource; import net.minecraft.util.RandomSource; import net.minecraft.world.entity.LivingEntity; import net.minecraft.world.item.ItemStack; import net.minecraft.world.item.context.BlockPlaceContext; import net.minecraft.world.level.BlockGetter; import net.minecraft.world.level.Level; import net.minecraft.world.level.LevelReader; import net.minecraft.world.level.ScheduledTickAccess; import net.minecraft.world.level.block.state.BlockBehaviour; import net.minecraft.world.level.block.state.BlockState; import net.minecraft.world.level.block.state.StateDefinition.Builder; import net.minecraft.world.level.block.state.properties.BlockStateProperties; import net.minecraft.world.level.block.state.properties.BooleanProperty; import net.minecraft.world.level.block.state.properties.EnumProperty; import net.minecraft.world.level.gameevent.GameEvent; import net.minecraft.world.level.redstone.ExperimentalRedstoneUtils; import net.minecraft.world.level.redstone.Orientation; import net.minecraft.world.phys.shapes.CollisionContext; import net.minecraft.world.phys.shapes.VoxelShape; import org.jetbrains.annotations.Nullable; public class TripWireHookBlock extends Block { public static final MapCodec CODEC = simpleCodec(TripWireHookBlock::new); public static final EnumProperty FACING = HorizontalDirectionalBlock.FACING; public static final BooleanProperty POWERED = BlockStateProperties.POWERED; public static final BooleanProperty ATTACHED = BlockStateProperties.ATTACHED; protected static final int WIRE_DIST_MIN = 1; protected static final int WIRE_DIST_MAX = 42; private static final int RECHECK_PERIOD = 10; protected static final int AABB_OFFSET = 3; protected static final VoxelShape NORTH_AABB = Block.box(5.0, 0.0, 10.0, 11.0, 10.0, 16.0); protected static final VoxelShape SOUTH_AABB = Block.box(5.0, 0.0, 0.0, 11.0, 10.0, 6.0); protected static final VoxelShape WEST_AABB = Block.box(10.0, 0.0, 5.0, 16.0, 10.0, 11.0); protected static final VoxelShape EAST_AABB = Block.box(0.0, 0.0, 5.0, 6.0, 10.0, 11.0); @Override public MapCodec codec() { return CODEC; } public TripWireHookBlock(BlockBehaviour.Properties properties) { super(properties); this.registerDefaultState(this.stateDefinition.any().setValue(FACING, Direction.NORTH).setValue(POWERED, false).setValue(ATTACHED, false)); } @Override protected VoxelShape getShape(BlockState state, BlockGetter level, BlockPos pos, CollisionContext context) { switch ((Direction)state.getValue(FACING)) { case EAST: default: return EAST_AABB; case WEST: return WEST_AABB; case SOUTH: return SOUTH_AABB; case NORTH: return NORTH_AABB; } } @Override protected boolean canSurvive(BlockState state, LevelReader level, BlockPos pos) { Direction direction = state.getValue(FACING); BlockPos blockPos = pos.relative(direction.getOpposite()); BlockState blockState = level.getBlockState(blockPos); return direction.getAxis().isHorizontal() && blockState.isFaceSturdy(level, blockPos, direction); } @Override protected BlockState updateShape( BlockState state, LevelReader level, ScheduledTickAccess scheduledTickAccess, BlockPos pos, Direction direction, BlockPos neighborPos, BlockState neighborState, RandomSource random ) { return direction.getOpposite() == state.getValue(FACING) && !state.canSurvive(level, pos) ? Blocks.AIR.defaultBlockState() : super.updateShape(state, level, scheduledTickAccess, pos, direction, neighborPos, neighborState, random); } @Nullable @Override public BlockState getStateForPlacement(BlockPlaceContext context) { BlockState blockState = this.defaultBlockState().setValue(POWERED, false).setValue(ATTACHED, false); LevelReader levelReader = context.getLevel(); BlockPos blockPos = context.getClickedPos(); Direction[] directions = context.getNearestLookingDirections(); for (Direction direction : directions) { if (direction.getAxis().isHorizontal()) { Direction direction2 = direction.getOpposite(); blockState = blockState.setValue(FACING, direction2); if (blockState.canSurvive(levelReader, blockPos)) { return blockState; } } } return null; } @Override public void setPlacedBy(Level level, BlockPos pos, BlockState state, LivingEntity placer, ItemStack stack) { calculateState(level, pos, state, false, false, -1, null); } public static void calculateState( Level level, BlockPos pos, BlockState hookState, boolean attaching, boolean shouldNotifyNeighbours, int searchRange, @Nullable BlockState state ) { Optional optional = hookState.getOptionalValue(FACING); if (optional.isPresent()) { Direction direction = (Direction)optional.get(); boolean bl = (Boolean)hookState.getOptionalValue(ATTACHED).orElse(false); boolean bl2 = (Boolean)hookState.getOptionalValue(POWERED).orElse(false); Block block = hookState.getBlock(); boolean bl3 = !attaching; boolean bl4 = false; int i = 0; BlockState[] blockStates = new BlockState[42]; for (int j = 1; j < 42; j++) { BlockPos blockPos = pos.relative(direction, j); BlockState blockState = level.getBlockState(blockPos); if (blockState.is(Blocks.TRIPWIRE_HOOK)) { if (blockState.getValue(FACING) == direction.getOpposite()) { i = j; } break; } if (!blockState.is(Blocks.TRIPWIRE) && j != searchRange) { blockStates[j] = null; bl3 = false; } else { if (j == searchRange) { blockState = MoreObjects.firstNonNull(state, blockState); } boolean bl5 = !(Boolean)blockState.getValue(TripWireBlock.DISARMED); boolean bl6 = (Boolean)blockState.getValue(TripWireBlock.POWERED); bl4 |= bl5 && bl6; blockStates[j] = blockState; if (j == searchRange) { level.scheduleTick(pos, block, 10); bl3 &= bl5; } } } bl3 &= i > 1; bl4 &= bl3; BlockState blockState2 = block.defaultBlockState().trySetValue(ATTACHED, bl3).trySetValue(POWERED, bl4); if (i > 0) { BlockPos blockPosx = pos.relative(direction, i); Direction direction2 = direction.getOpposite(); level.setBlock(blockPosx, blockState2.setValue(FACING, direction2), 3); notifyNeighbors(block, level, blockPosx, direction2); emitState(level, blockPosx, bl3, bl4, bl, bl2); } emitState(level, pos, bl3, bl4, bl, bl2); if (!attaching) { level.setBlock(pos, blockState2.setValue(FACING, direction), 3); if (shouldNotifyNeighbours) { notifyNeighbors(block, level, pos, direction); } } if (bl != bl3) { for (int k = 1; k < i; k++) { BlockPos blockPos2 = pos.relative(direction, k); BlockState blockState3 = blockStates[k]; if (blockState3 != null) { BlockState blockState4 = level.getBlockState(blockPos2); if (blockState4.is(Blocks.TRIPWIRE) || blockState4.is(Blocks.TRIPWIRE_HOOK)) { level.setBlock(blockPos2, blockState3.trySetValue(ATTACHED, bl3), 3); } } } } } } @Override protected void tick(BlockState state, ServerLevel level, BlockPos pos, RandomSource random) { calculateState(level, pos, state, false, true, -1, null); } private static void emitState(Level level, BlockPos pos, boolean attached, boolean powered, boolean wasAttached, boolean wasPowered) { if (powered && !wasPowered) { level.playSound(null, pos, SoundEvents.TRIPWIRE_CLICK_ON, SoundSource.BLOCKS, 0.4F, 0.6F); level.gameEvent(null, GameEvent.BLOCK_ACTIVATE, pos); } else if (!powered && wasPowered) { level.playSound(null, pos, SoundEvents.TRIPWIRE_CLICK_OFF, SoundSource.BLOCKS, 0.4F, 0.5F); level.gameEvent(null, GameEvent.BLOCK_DEACTIVATE, pos); } else if (attached && !wasAttached) { level.playSound(null, pos, SoundEvents.TRIPWIRE_ATTACH, SoundSource.BLOCKS, 0.4F, 0.7F); level.gameEvent(null, GameEvent.BLOCK_ATTACH, pos); } else if (!attached && wasAttached) { level.playSound(null, pos, SoundEvents.TRIPWIRE_DETACH, SoundSource.BLOCKS, 0.4F, 1.2F / (level.random.nextFloat() * 0.2F + 0.9F)); level.gameEvent(null, GameEvent.BLOCK_DETACH, pos); } } private static void notifyNeighbors(Block block, Level level, BlockPos pos, Direction direction) { Direction direction2 = direction.getOpposite(); Orientation orientation = ExperimentalRedstoneUtils.initialOrientation(level, direction2, Direction.UP); level.updateNeighborsAt(pos, block, orientation); level.updateNeighborsAt(pos.relative(direction2), block, orientation); } @Override protected void onRemove(BlockState state, Level level, BlockPos pos, BlockState newState, boolean movedByPiston) { if (!movedByPiston && !state.is(newState.getBlock())) { boolean bl = (Boolean)state.getValue(ATTACHED); boolean bl2 = (Boolean)state.getValue(POWERED); if (bl || bl2) { calculateState(level, pos, state, true, false, -1, null); } if (bl2) { notifyNeighbors(this, level, pos, state.getValue(FACING)); } super.onRemove(state, level, pos, newState, movedByPiston); } } @Override protected int getSignal(BlockState state, BlockGetter level, BlockPos pos, Direction direction) { return state.getValue(POWERED) ? 15 : 0; } @Override protected int getDirectSignal(BlockState state, BlockGetter level, BlockPos pos, Direction direction) { if (!(Boolean)state.getValue(POWERED)) { return 0; } else { return state.getValue(FACING) == direction ? 15 : 0; } } @Override protected boolean isSignalSource(BlockState state) { return true; } @Override protected BlockState rotate(BlockState state, Rotation rotation) { return state.setValue(FACING, rotation.rotate(state.getValue(FACING))); } @Override protected BlockState mirror(BlockState state, Mirror mirror) { return state.rotate(mirror.getRotation(state.getValue(FACING))); } @Override protected void createBlockStateDefinition(Builder builder) { builder.add(FACING, POWERED, ATTACHED); } }