animation - 当触摸移动到触摸开始一定距离时播放动画

Question

我是unityscript和unity的新手，我试图在触摸移动位置为触摸右侧+100时触发动画，所以我也尝试过+500和+1000，似乎动画正在播放触摸在屏幕上超过 100,500 或 1000，而不是 touch.began 位置 +（数量），感谢您的帮助，感谢您的时间，因为我是 unityscript 的新手

#pragma strict
var distance : float = 10;
var joystick : GameObject;
private var first : boolean = false;
function Start () {

}

function Update () {
transform.eulerAngles = Vector3(0,Camera.main.transform.eulerAngles.y + 180,0);

var v3Pos : Vector3;
if (Input.touchCount > 0 && 
          Input.GetTouch(0).phase == TouchPhase.Began) {

            // Get movement of the finger since last frame
            var touchDeltaPosition:Vector2 = Input.GetTouch(0).position;
            if(!first){
            var touchdet : Vector2 = touchDeltaPosition;
            first = true;
            }

            // Move object across XY plane
            v3Pos = Vector3(touchDeltaPosition.x, touchDeltaPosition.y, distance);
         transform.position = Camera.main.ScreenToWorldPoint(v3Pos);
        }


 if (Input.touchCount > 0 && 
          Input.GetTouch(0).phase == TouchPhase.Moved) {

            // Get movement of the finger since last frame
            var touchAlphaPosition:Vector2 = Input.GetTouch(0).position;

            // Move object across XY plane
            v3Pos = Vector3(touchAlphaPosition.x, touchAlphaPosition.y, distance);
         transform.position = Camera.main.ScreenToWorldPoint(v3Pos);
        }

        if (Input.touchCount > 0 && 
          (Input.GetTouch(0).phase == TouchPhase.Ended || Input.GetTouch(0).phase == TouchPhase.Canceled )) {

            // Get movement of the finger since last frame
            var touchBetaPosition:Vector2 = Input.GetTouch(0).position;
            first = false;
            // Move object across XY plane
            v3Pos = Vector3(touchBetaPosition.x, 600, distance);
         transform.position = Camera.main.ScreenToWorldPoint(v3Pos);
        }

        if(first)
        {
        if(touchAlphaPosition.x > touchdet.x + 100)
        {
        animation.Play("Right");
        }
        }

}

Answer 1

变量 touchDet 在函数 Update 中声明和初始化，因此函数调用之间不会保留该值。除了触发 TouchPhase.Began 事件的迭代之外，touchDet 将始终等于 Vector2.zero。