使用事件處理程序或類似的東西

Question

我工作的Adobe Flash CS5和ActionScript 3的 - 我的問題是如何讓一個按鈕，只可用一次，其他四個按鈕已被點擊點擊和場景有被訪問過？

Answer 1

我們假設您的5個按鈕始終在時間軸和上可用，它們處於頂級文檔級別（如果沒有，我們需要進行一些調整）。讓我們還假設，從你的問題，你還沒有準備好爲一個文件類文件的最佳實踐，所以這將是寫成時間表腳本。

 
//assumes the 4 buttons are on the stage, named button1, button2, etc. 
var prerequisiteButtons:Array = [button1, button2, button3, button4]; 
var prerequisitesClicked:Array /*of Boolean*/ = []; 

coyButton.enabled = false;//your fifth button, who plays hard to get 

//loop through and listen for clicks on your prerequisite buttons 
for each (var button:DisplayObject in buttons) { 
    button.addEventListener(MouseEvent.CLICK, checkAllClicked); 
} 

//check to see if all the buttons have been clicked 
function checkAllClicked(e:Event):void { 
    //find the button in the prerequisite buttons array 
    var buttonIndex:int = prerequisiteButtons.indexOf(e.currentTarget); 
    //set the matching index to true in the array that keeps track of what has been clicked 
    prerequisitesClicked[buttonIndex] = true; 
    //count how many of them have been clicked 
    var prerequisiteDoneCount:int = 0; 
    for (var i:int = 0; i< prerequisitesClicked.length; i++) { 
     if (prerequisitesClicked[i]) prerequisiteDoneCount++; 
    } 
    //if all the buttons have been clicked, enable the button (may also want to add a listener here) 
    if (prerequisiteDoneCount==prerequisiteButtons.length) coyButton.enabled = true; 
}