Question

我的程序遇到了一个奇怪的错误，我似乎无法修复。总而言之，每当我切换两个if语句时，只有第一个语句才会生效。

示例:(球将成功地与顶部碰撞，但不会与底部碰撞。）

ReferenceError: PageType is not defined
    at Object.<anonymous> (H:\Coding\Projects\react-starter-kit\build\webpack:\src\data\types\PageType.js:50:1)
    at __webpack_require__ (H:\Coding\Projects\react-starter-kit\build\webpack:\webpack\bootstrap 8ce5b4572987765a465d:19:1)
    at Object.<anonymous> (H:\Coding\Projects\react-starter-kit\build\server.js:731:74)
    at __webpack_require__ (H:\Coding\Projects\react-starter-kit\build\webpack:\webpack\bootstrap 8ce5b4572987765a465d:19:1)
    at Object.<anonymous> (H:\Coding\Projects\react-starter-kit\build\webpack:\src\data\schema.js:1:1)
    at __webpack_require__ (H:\Coding\Projects\react-starter-kit\build\webpack:\webpack\bootstrap 8ce5b4572987765a465d:19:1)
    at Object.<anonymous> (H:\Coding\Projects\react-starter-kit\build\server.js:1098:72)
    at __webpack_require__ (H:\Coding\Projects\react-starter-kit\build\webpack:\webpack\bootstrap 8ce5b4572987765a465d:19:1)
    at Object.<anonymous> (H:\Coding\Projects\react-starter-kit\build\server.js:7455:18)
    at __webpack_require__ (H:\Coding\Projects\react-starter-kit\build\webpack:\webpack\bootstrap 8ce5b4572987765a465d:19:1)
    at H:\Coding\Projects\react-starter-kit\build\webpack:\webpack\bootstrap 8ce5b4572987765a465d:65:1
    at Object.<anonymous> (H:\Coding\Projects\react-starter-kit\build\server.js:71:10)
    at Module._compile (module.js:570:32)
    at Object.Module._extensions..js (module.js:579:10)
    at Module.load (module.js:487:32)
    at tryModuleLoad (module.js:446:12)

现在，如果我切换两个if语句的位置，就像这样;

public void update()
{
    if(enemies != null)
    {
        for(Enemy e : enemies)
            if(c.getBall().getHitbox().intersects(e.getHitbox()))
            {

                if(e.collidedBottom())
                    c.getBall().setSpeedY((c.getBall().ballSpeed));
                if(e.collidedTop())
                    c.getBall().setSpeedY(-(c.getBall().ballSpeed));

                deadEnemies.add(e);
            }

        enemies.removeAll(deadEnemies);
    }

球会在与底部碰撞时成功反应，但不会与顶部碰撞。这是两种碰撞方法：

if(e.collidedTop())
    c.getBall().setSpeedY(-(c.getBall().ballSpeed));
if(e.collidedBottom())
    c.getBall().setSpeedY((c.getBall().ballSpeed));

Enemy指的是循环中当前聚焦的块。

碰撞检测不适用于我的破砖机程序？

0 个答案: