import org.spongepowered.api.world.LocatableBlock; //导入依赖的package包/类
@Listener
public void notifyNeighbors(final NotifyNeighborBlockEvent event, @First LocatableBlock cause) {
    final LockManager lockManager = Latch.getLockManager();
    event.getNeighbors().entrySet().removeIf(neighbor -> {
        final Optional<Lock> optionalLock = lockManager.getLock(cause.getLocation().getBlockRelative(neighbor.getKey()));

        if (optionalLock.isPresent()) {
            final Lock lock = optionalLock.get();

            if (!lock.getProtectFromRedstone()) {
                return false;
            }

            final Optional<Player> optionalPlayer = event.getCause().first(Player.class);

            //noinspection OptionalIsPresent
            return !optionalPlayer.isPresent() || !lock.canAccess(optionalPlayer.get().getUniqueId());
        }
        return false;
    });
}
 

import org.spongepowered.api.world.LocatableBlock; //导入依赖的package包/类
@Listener
public void onPreBlockChange(final ChangeBlockEvent.Pre event, @First LocatableBlock block) {
    final BlockType type = block.getBlockState().getType();

    if (type.equals(BlockTypes.PISTON) || type.equals(BlockTypes.STICKY_PISTON) || type.equals(BlockTypes.PISTON_EXTENSION) || type
        .equals(BlockTypes.PISTON_HEAD)) {
        //noinspection OptionalGetWithoutIsPresent
        final Location<World> location = block.getLocation().getBlockRelative(block.get(Keys.DIRECTION).get());

        final LockManager lockManager = Latch.getLockManager();

        if (lockManager.getLock(location).isPresent() || (lockManager.getLock(location.getBlockRelative(Direction.UP)).isPresent() && lockManager
            .isProtectBelowBlocks(location.getBlockRelative(Direction.UP).getBlockType()))) {
            event.setCancelled(true);
        }
    }
}
 

import org.spongepowered.api.world.LocatableBlock; //导入依赖的package包/类
public String toString(boolean unks) {
    if (remAs != null) {
        return "shared/" + remAs;
    }
    if (internal instanceof MainPlayerInventory) {
        return "player/" + ((PlayerInventory) (internal).parent()).getCarrier().get().getUniqueId().toString();
    }
    else if (internal instanceof CarriedInventory) {
        Object o = ((CarriedInventory) internal).getCarrier().orElse(null);
        if (o == null) {
            return "((UNKNOWN INVENTORY TYPE))";
        }
        if (o instanceof Entity) {
            return "entity/" + ((Entity) o).getUniqueId().toString();
        }
        else if (o instanceof TileEntityCarrier) {
            LocatableBlock lb = ((TileEntityCarrier) o).getLocatableBlock();
            return "block/" + new LocationTag(new UtilLocation(lb.getPosition(), lb.getWorld()));
        }
    }
    if (!unks) {
        // TODO: Handle all inventory types somehow???
        throw new RuntimeException("Inventory type not known to the system!");
    }
    else {
        return "((UNKNOWN INVENTORY TYPE))";
    }
}
 

import org.spongepowered.api.world.LocatableBlock; //导入依赖的package包/类
public GPClaim getSourceClaim(Cause cause) {
    BlockSnapshot blockSource = cause.first(BlockSnapshot.class).orElse(null);
    LocatableBlock locatableBlock = null;
    TileEntity tileEntitySource = null;
    Entity entitySource = null;
    if (blockSource == null) {
        locatableBlock = cause.first(LocatableBlock.class).orElse(null);
        if (locatableBlock == null) {
            entitySource = cause.first(Entity.class).orElse(null);
        }
        if (locatableBlock == null && entitySource == null) {
            tileEntitySource = cause.first(TileEntity.class).orElse(null);
        }
    }

    GPClaim sourceClaim = null;
    if (blockSource != null) {
        sourceClaim = this.dataStore.getClaimAt(blockSource.getLocation().get());
    } else if (locatableBlock != null) {
        sourceClaim = this.dataStore.getClaimAt(locatableBlock.getLocation());
    } else if (tileEntitySource != null) {
        sourceClaim = this.dataStore.getClaimAt(tileEntitySource.getLocation());
    } else if (entitySource != null) {
        Entity entity = entitySource;
        if (entity instanceof Player) {
            Player player = (Player) entity;
            GPPlayerData playerData = GriefPreventionPlugin.instance.dataStore.getOrCreatePlayerData(player.getWorld(), player.getUniqueId());
            sourceClaim = this.dataStore.getClaimAtPlayer(playerData, player.getLocation());
        } else {
            sourceClaim = this.dataStore.getClaimAt(entity.getLocation());
        }
    }

    return sourceClaim;
}
 

import org.spongepowered.api.world.LocatableBlock; //导入依赖的package包/类
@Listener
public void onPreChangeBlock(ChangeBlockEvent.Pre event, @Root LocatableBlock block)
{
    for (Location<World> loc : event.getLocations()) {

        if (loc.getBlockType() != BlockTypes.AIR && loc.getBlockType() != block.getBlockState().getType()) {
            List<Region> regionsAt = manager.getRegionsAt(loc);
            if (this.checkSetting(event, null, regionsAt, () -> null, s -> s.blockDamage.block.getOrDefault(block.getBlockState().getType() , UNDEFINED), UNDEFINED) == FALSE)
            {
                return;
            }
        }
    }
}
 

import org.spongepowered.api.world.LocatableBlock; //导入依赖的package包/类
@Listener
public void onRedstoneChangeNotify(NotifyNeighborBlockEvent event, @Root LocatableBlock block)
{
    for (Map.Entry<Direction, BlockState> entry : event.getOriginalNeighbors().entrySet())
    {
        Location<World> loc = block.getLocation().getRelative(entry.getKey());
        List<Region> regionsAt = manager.getRegionsAt(loc);
        if (isRedstoneChange(entry.getValue()))
        {
            // Redstone is disabled entirely?
            if (checkSetting(event, null, regionsAt, () -> null, s -> s.deadCircuit, UNDEFINED) == FALSE)
            {
                return;
            }
            if (true)
            {
                // TODO this check is spammed way too often (also with wrong notifier mabye?)
                return;
            }
            // Redstone is disabled for player?
            Optional<Player> player = event.getCause().getContext().get(EventContextKeys.NOTIFIER).filter(p -> p instanceof Player).map(Player.class::cast);
            if (player.isPresent())
            {
                if (checkSetting(event, player.get(), regionsAt, () -> usePermission.get(UseType.REDSTONE), s -> s.use.all.redstone, UNDEFINED) == FALSE)
                {
                    return;
                }
            }
        }
    }
}
 

import org.spongepowered.api.world.LocatableBlock; //导入依赖的package包/类
@Override
public LocatableBlock getLocatableBlock() {
    return null;
}
 

import org.spongepowered.api.world.LocatableBlock; //导入依赖的package包/类
private boolean isCausedbyFire(ChangeBlockEvent event) {
  Optional<LocatableBlock> optLocatableBlock = event.getCause().get(NamedCause.SOURCE, LocatableBlock.class);
  return optLocatableBlock.filter(locatableBlock -> locatableBlock.getBlockState().getType() == BlockTypes.FIRE).isPresent();
}