AS3显示列表和box2d

Question

我有一个名为“砖”在一个叫做createBrick的函数，它从sprite类扩展而来，我也有一个为运行时共享导出的名为“Brick”的库中创建的影片剪辑。由于某些奇怪的原因，当我运行代码时，即使在调试代码时确实创建了砖块，它仍未显示在舞台上。

这里是功能

 public class createBrick extends Sprite { 

     public function createBrick(_main:Main) { 
        main = _main; 
        var go:Brick = new Brick(); 
        addChild(go); 
        trace(go.x); 
        brick(475, 235, 30, 30); 
     } 

    private function brick(pX: int, pY: int, w: Number, h: Number): void { 

       var bric:Brick = new Brick(); 
       addChild(bric); 
       bric.x = pX; 
       bric.y = pY; 
       bric.width = w; 
       bric.height = h; 

       var polygonShape: b2PolygonShape = new b2PolygonShape(); 
       var polygonFixture: b2FixtureDef = new b2FixtureDef(); 
       polygonShape.SetAsBox(w/2/worldScale, h/2/worldScale); 
       polygonFixture.shape = polygonShape; 
       polygonFixture.density = .2; 
       polygonFixture.restitution = 0.9; 
       polygonFixture.friction = 0.9; 
       var brickbodyDef: b2BodyDef = new b2BodyDef(); 
       brickbodyDef.type=b2Body.b2_dynamicBody; 
       brickbodyDef.userData = bric; 
       brickbodyDef.position.Set(bric.x/worldScale, bric.y/worldScale); 
       var theBrick: b2Body = world.CreateBody(brickbodyDef); 
       theBrick.CreateFixture(polygonFixture); 
       } 
     } 

同样的功能完美地工作，如果我有所有的代码在主文档类和我看到舞台上的一块砖。任何线索我是否没有正确引用它？

Answer 1

我想通了，只是不得不从主文档类通过阶段引用来显示精灵。