Unity3d 在移動平台的觸摸事件樣本

 private Vector2 leftFingerPos = Vector2.zero;
 private Vector2 leftFingerLastPos = Vector2.zero;
 private Vector2 leftFingerMoveBy = Vector2.zero;
 
 public float slideMagnitudeX = 0.0;
 public float slideMagnitudeY = 0.0;
 
 void Update()
 {
  if(Input.touchCount == 1)
  {
   Touch touch = Input.GetTouch(0);
   if(touch.phase == TouchPhase.Began)
   {
    leftFingerPos = Vector2.zero;
    leftFingerLastPos = Vector2.zero;
    leftFingerMoveBy = Vector2.zero;
    
    slideMagnitudeX = 0;
    slideMagnitudeY = 0;
    
    //記錄開始座標點
    leftFingerPos = touch.position;
    
   }
   
   else if(touch.phase == TouchPhase.Moved)
   {
    leftFingerMoveBy = touch.position - leftFingerPos;
    leftFingerLastPos = leftFingerPos;
    leftFingerPos = touch.position;
    
    slideMagnitudeX = leftFingerMoveBy.x / Screen.width;
    slideMagnitudeY = leftFingerMoveBy.y / Screen.height;
   }
   
   else if(touch.phase == TouchPhase.Stationary)
   {
    leftFingerLastPos = leftFingerPos;
    leftFingerPos = touch.position;
    
    slideMagnitudeX = 0.0;
    slideMagnitudeY = 0.0;
   }
   
   else if(touch.phase == TouchPhase.Ended || touch.phase == TouchPhase.Canceled)
   {
    slideMagnitudeX = 0.0;
    slideMagnitudeY = 0.0;
   }
  }
 }