獲取數據對象的屬性參考as3中同一對象的其他屬性

Question

如何在引用movieclip'whitesmoke'的enter_frame偵聽器'animatesmoke'內獲得'smokeobject'的速度屬性，該屬性也是' smokeobject

這裏是我的代碼

public function createRocketSmoke() 
    { 
     var smokeObject:Object = new Object(); 
     smokeObject.whiteSmoke = new Bitmap(new WhiteSmoke(0,0)); 
     smokeObject.whiteSmoke.x=targetX + Math.random()*4-8; 
     smokeObject.whiteSmoke.y=targetY + Math.random()*4-8; 

     smokeContainer=new MovieClip(); 
     smokeContainer.addChild(smokeObject.whiteSmoke); 
     addChild(smokeContainer); 

     var randomScale = Math.random(); 
     if(randomScale<.5) 
     randomScale = randomScale+.5; 
     smokeObject.whiteSmoke.scaleX= randomScale; 
     smokeObject.whiteSmoke.scaleY= randomScale; 
     smokeObject.speed = Math.random(); 
     smokeObject.whiteSmoke.rotation = Math.random()*360; 
     smokeObject.whiteSmoke.addEventListener(Event.ENTER_FRAME,animateSmoke);  

    } 
    public function animateSmoke(event:Event):void 
    { 
     //here i want the speed property of the 'smokeObject' 
    } 

Answer 1

你試圖做的是要得到非常凌亂的速度非常快。

我建議創建你的煙類，並給它一個update()功能：

public class Smoke 
{ 

    // Properties. 
    private var _whiteSmoke:Bitmap; 
    private var _speed:Number = 0; 


    // Constructor. 
    public function Smoke(targetX:Number = 0, targetY:Number = 0) 
    { 
     // Prepare graphics. 
     _whiteSmoke = new Bitmap(new WhiteSmoke()); 
     _whiteSmoke.x = targetX + Math.random()*4-8; 
     _whiteSmoke. y = targetY + Math.random()*4-8; 
     _whiteSmoke.rotation = Math.random()*360; 
     _whiteSmoke.scaleX = whiteSmoke.scaleY = 0.5 Math.random() * 0.5; 

     // Apply random speed. 
     _speed = Math.random(); 
    } 


    // Update this smoke. 
    public function update():void 
    { 
     // 
     // Update this smoke here. 
     // 
    } 


    // The graphics for this smoke. 
    public function get whiteSmoke():Bitmap 
    { 
     return _whiteSmoke; 
    } 


    // The speed for this smoke. 
    public function get speed():Number 
    { 
     return _speed; 
    } 

} 

這將讓您更輕鬆地使用數組更新你的煙對象和一個循環來更新它們：

// This array will hold all your Smoke objects. 
var allSmoke:Array = []; 

// Create some Smoke. 
var smoke1:Smoke = new Smoke(10, 10); 
var smoke2:Smoke = new Smoke(10, 10); 

// Add it to the array. 
allSmoke.push(smoke1); 
allSmoke.push(smoke2); 


// Prepare game loop. 
addEventListener(Event.ENTER_FRAME, update); 
function update(e:Event):void 
{ 
    // Loop through smoke objects and update them. 
    for each(var i:Smoke in allSmoke) 
    { 
     i.update(); 
    } 
}