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我試圖做一個簡單的遊戲，當球落入某塊時，你贏了。用BOX2D殺死不活動的物體？
機制：球通過幾個障礙物落下，最後有兩個方塊，如果球碰到你贏的左方塊，下一個關卡將包含更多的塊和更少的空間。
測試影片（點擊屏幕上砸球）： http://gabrielmeono.com/downloads/Lucky_Hit_Alpha.swf
這些是主要的變量：
var winBox:QuickObject;//You win
var looseBox:QuickObject;//You loose
var gameBall:QuickObject;//Ball dropped
問題
有時候，球將在其中一個障礙物中獲得存貨並且不會再移動。我可以殺死/從場景中刪除這個對象嗎？
目前代碼：
package {
import flash.display.MovieClip;
import com.actionsnippet.qbox.*;
import flash.events.MouseEvent;
import flash.events.Event;
[SWF(width = 600, height = 600, frameRate = 60)]
public class LuckyHit extends MovieClip {
public var sim:QuickBox2D;
var winBox:QuickObject;
var looseBox:QuickObject;
var gameBall:QuickObject;
var simContacts:QuickContacts;
/**
* Constructor
*/
public function LuckyHit()
{
sim = new QuickBox2D(this);
simContacts = sim.addContactListener();
simContacts.addEventListener(QuickContacts.ADD, contactListener);
//sim.createStageWalls();
winBox = sim.addBox({x:5,y:600/30, width:300/30, height:10/30, density:0});
looseBox = sim.addBox({x:15,y:600/30, width:300/30, height:10/30, density:0});
// make obstacles
for (var i:int = 0; i<(stage.stageWidth/50); i++){
//End
sim.addCircle({x:1 + i * 1.5, y:16, radius:0.1, density:0});
sim.addCircle({x:2 + i * 1.5, y:15, radius:0.1, density:0});
//Mid End
sim.addCircle({x:0 + i * 2, y:14, radius:0.1, density:0});
sim.addCircle({x:0 + i * 2, y:13, radius:0.1, density:0});
sim.addCircle({x:0 + i * 2, y:12, radius:0.1, density:0});
sim.addCircle({x:0 + i * 2, y:11, radius:0.1, density:0});
sim.addCircle({x:0 + i * 2, y:10, radius:0.1, density:0});
//Middle Start
sim.addCircle({x:0 + i * 1.5, y:09, radius:0.1, density:0});
sim.addCircle({x:1 + i * 1.5, y:08, radius:0.1, density:0});
sim.addCircle({x:0 + i * 1.5, y:07, radius:0.1, density:0});
sim.addCircle({x:1 + i * 1.5, y:06, radius:0.1, density:0});
}
sim.start();
stage.addEventListener(MouseEvent.CLICK, _clicked);
}
/**
* ..
* @param e MouseEvent.CLICK
*/
private function _clicked(e:MouseEvent)
{
gameBall = sim.addCircle({x:(mouseX/30), y:(1), radius:0.25, density:5});
}
private function contactListener(e:Event)
{
if (simContacts.isCurrentContact(winBox,gameBall))
{
// Won.
trace ('You won!');
}
}
}
}