Flash Actionscript 3.0動畫循環

Question

我想創建一個側滾動遊戲。其中，我希望玩家能夠射擊吹飛鏢。因爲它是現在，如果玩家持有空格鍵，玩家的（這是一個MovieClip）拍攝動畫循環。我希望動畫只能在每個空格鍵上播放一次。

這裏是代碼，我使用：已被釋放

 // Process the pressed key(s) 
    public function KeyPressed(event:KeyboardEvent):void { 
     // The Left Key was pressed 
     if (event.keyCode == Keyboard.LEFT) { 
      leftKeyPressed = true; 
     } 

     // The Right Key was pressed 
     if (event.keyCode == Keyboard.RIGHT) { 
      rightKeyPressed = true; 
     } 

     // The Up Key was pressed 
     if (event.keyCode == Keyboard.UP) { 
      upKeyPressed = true; 
     } 

     // The Down Key was pressed 
     if (event.keyCode == Keyboard.DOWN) { 
      downKeyPressed = true; 
     }   
     // The Space Key was pressed 
     if (event.keyCode == Keyboard.SPACE) { 
      spaceKeyPressed = true; 
     } 
    } // End of 'KeyPressed()' function  

該方法確定哪個鍵（一個或多個）：：

該方法確定哪個鍵（一個或多個）被按下

 public function KeyReleased(event:KeyboardEvent):void { 
     // The Left Key was released 
     if (event.keyCode == Keyboard.LEFT) { 
      leftKeyPressed = false; 
     } 

     // The Right Key was released 
     if (event.keyCode == Keyboard.RIGHT) { 
      rightKeyPressed = false; 
     } 

     // The Up Key was released 
     if (event.keyCode == Keyboard.UP) { 
      upKeyPressed = false; 
     } 

     // The Down Key was released 
     if (event.keyCode == Keyboard.DOWN) { 
      downKeyPressed = false; 
     } 

     // The Space Key was released 
     if (event.keyCode == Keyboard.SPACE) { 
      spaceKeyPressed = false; 
     } 
    } // End of 'KeyReleased()' function 

這是播放播放器的一個拍攝動畫的代碼示例：

if (onGround && !downKeyPressed && spaceKeyPressed) { 
        player.gotoAndStop(7); 
} 

我該如何防止第7個播放器幀持續循環？我只想在空格鍵被按下時動畫播放一次。

謝謝！

Answer 1

只是一些快速的想法。

1）添加一個標誌來表示玩家當前正在進行動畫，isThrowing = false;例如。當您啓動第一個飛鏢並將其添加到上面的if語句中時，將其設置爲true。在動畫循環結束時，再次將其設置爲false。

2）另一種方法是在您發送飛鏢時刪除事件監聽器（或其中一些），並在飛鏢完成後再次添加它們。

可能還有其他方法，但這些應該會給你一些探索的場所。

祝你好運！

Answer 2

只需將stop();添加到動畫片段的第7幀即可。

但是，也許你更好地使用這種遊戲的進入幀事件，這裏是從一個遊戲，我正在做一個編輯的切口：

private var controls:Object = new Object(); 

    private function addListeners() 
    { 
     stage.addEventListener(KeyboardEvent.KEY_DOWN,controlKeyboard); 
     stage.addEventListener(KeyboardEvent.KEY_UP,controlKeyboard); 
     stage.addEventListener(Event.ENTER_FRAME,updateGame); 
    } 

    private function controlKeyboard(e:KeyboardEvent) 
    { 
     var keydown:Boolean = new Boolean(); 

     if (e.type == "keyDown") 
     { 
      keydown = true; 
     } 

     controls[e.keyCode] = keydown; 
    } 

    private function updateGame(e:Event) 
    { 
     if (controls[Keyboard.SPACE]) 
     { 
      if (player.currentFrame == 1) 
      { 
       player.gotoAndPlay(2); 
      } 
     } 

     if (player.currentFrame == 7) 
     { 
      player.gotoAndStop(1); 
     } 

    }