Minecraft Java插件如何删除HashMap中存储的所有块

Question

我试图存储游戏期间放置的所有块，然后当我运行resetblocks命令或游戏不再运行时，我存储在HashMap中的所有块都将被删除

这就是我储存积木的方式。我只是不知道如何循环通过HashMap并销毁每个块

public HashMap<Block, Location> BlockReset = new HashMap<>();
// WHEN PLACED BLOCK
public void onPlace(BlockPlaceEvent event) {
    Block block = event.getBlock();
    Location location = block.getLocation();

    if (gameRunning == true) {
        BlockReset.put(block, location);
    }
}

Answer 1

您不需要HashMap来保存和销毁随后的块，因为位置很重要

创建一个List<Location>并按如下方式执行：

class Plugin {

    private List<Location> blocks = new ArrayList<>();

    public void onPlace(BlockPlaceEvent event) {
        Block block = event.getBlock();
        Location loc = block.getLocation();

        if (gameRunning == true) {
            if (!blocks.contains(loc))
                blocks.add(loc);
        }
    }

    public void destroyPlacedBlocks() {
        for (Location loc : blocks) {
            loc.getWorld().getBlockAt(loc).setType(Material.AIR);
        }
    }
}

真诚地

Answer 2

我对minecraft一无所知，我查看了javadoc关于块接口的内容，没有找到删除方法或类似的东西。我想你更清楚如何处理这件事。相反，我会帮你绘制地图：

class Plugin {
    private Map<Block, Location> blocks = new HashMap<>();

    public void onPlace(BlockPlaceEvent event) {
        Block block = event.getBlock();
        Location location = block.getLocation();
        if (gameRunning == true) {
            blocks.put(block, location);
        }
    }

    public removeAllBlocks() {
        for(Map.Entry<Block, Location> entry : blocks.entrySet()) {
            Block block = entry.getKey();
            Location location entry.getValue();
            block.    // do what do you want with block and location
            location. // block.delete() or other minecraft things
        }
        blocks.clear(); //removes all entries from map, now map is clear;

    }


}