unity3d 触屏拖拽物体代码

public float speed = 0.1f;
	void Update() {
		if (Input.touchCount > 0 && Input.GetTouch(0).phase == TouchPhase.Moved) {
			Vector2 touchDeltaPosition = Input.GetTouch(0).deltaPosition;
			transform.Translate(touchDeltaPosition.x * speed, touchDeltaPosition.y * speed, 0);
		}
	}