Swipe Gesture in unity 3d

public class SwipeDetector : MonoBehaviour { private Vector2 fingerDown; private Vector2 fingerUp; public bool detectSwipeOnlyAfterRelease = false; public float SWIPE_THRESHOLD = 20f; // Update is called once per frame void Update() { foreach (Touch touch in Input.touches) { if (touch.phase == TouchPhase.Began) { fingerUp = touch.position; fingerDown = touch.position; } //Detects Swipe while finger is still moving if (touch.phase == TouchPhase.Moved) { if (!detectSwipeOnlyAfterRelease) { fingerDown = touch.position; checkSwipe(); } } //Detects swipe after finger is released if (touch.phase == TouchPhase.Ended) { fingerDown = touch.position; checkSwipe(); } } } void checkSwipe() { //Check if Vertical swipe if (verticalMove() > SWIPE_THRESHOLD && verticalMove() > horizontalValMove()) { //Debug.Log("Vertical"); if (fingerDown.y - fingerUp.y > 0)//up swipe { OnSwipeUp(); } else if (fingerDown.y - fingerUp.y < 0)//Down swipe { OnSwipeDown(); } fingerUp = fingerDown; } //Check if Horizontal swipe else if (horizontalValMove() > SWIPE_THRESHOLD && horizontalValMove() > verticalMove()) { //Debug.Log("Horizontal"); if (fingerDown.x - fingerUp.x > 0)//Right swipe { OnSwipeRight(); } else if (fingerDown.x - fingerUp.x < 0)//Left swipe { OnSwipeLeft(); } fingerUp = fingerDown; } //No Movement at-all else { //Debug.Log("No Swipe!"); } } float verticalMove() { return Mathf.Abs(fingerDown.y - fingerUp.y); } float horizontalValMove() { return Mathf.Abs(fingerDown.x - fingerUp.x); } //////////////////////////////////CALLBACK FUNCTIONS///////////////////////////// void OnSwipeUp() { Debug.Log("Swipe UP"); } void OnSwipeDown() { Debug.Log("Swipe Down"); } void OnSwipeLeft() { Debug.Log("Swipe Left"); } void OnSwipeRight() { Debug.Log("Swipe Right"); } }