delegate Tap, Drag, Swipe

GestureListener.cs

using UnityEngine;
using System.Collections;

// 3 types delegates
public delegate void TapDelegate();
public delegate void DragDelegate(Vector3 vec);
public delegate void SwipeDelegate(SwipeDirection direction);


public enum SwipeDirection {
	RIGHT,
	LEFT,
	UP,
	DOWN
}


/// <summary>
/// 	Listen Tap or Drag or Swipe.....
/// </summary>
[RequireComponent (typeof (BoxCollider))]
public class GestureListener : MonoBehaviour {
	// public 
	public float dragSensitybity = 10f;
	public float tapTime = 0.3f;
	
	// private
	private float lastClickTime = 0;
	private Vector3 lastClickPoint;
	private TapDelegate tapDelegate = null;
	private DragDelegate dragDelegate = null;
	private SwipeDelegate swipeDelegate = null;
	
	
	public void SetTapDelegate(TapDelegate del) {
		this.tapDelegate = del;
	}
	
	public void SetDragDelegate(DragDelegate del) {
		this.dragDelegate = del;
	}
	
	public void SetSwipeDelegate(SwipeDelegate del) {
		this.swipeDelegate = del;
	}
	
	
	
	void OnMouseDown() {
		lastClickTime = Time.time;
		lastClickPoint = ToughToMouseConverter.GetMousePosition();
	}
	
	void OnMouseDrag() {
		float nowTime = Time.time;
		if(nowTime - lastClickTime > tapTime) {
			Vector3 mousePoint = ToughToMouseConverter.GetMousePosition();
			Vector3 diff = mousePoint - lastClickPoint;
			
			if(diff.magnitude > dragSensitybity) {
				onDrag(diff);
			}
		}
	}
	
	void OnMouseUp() {
		float nowTime = Time.time;
		if(nowTime - lastClickTime < tapTime) {
			Vector3 mousePoint = ToughToMouseConverter.GetMousePosition();
			Vector3 diff = mousePoint - lastClickPoint;
			
			if(diff.magnitude < dragSensitybity) {
				onTap();
			}
			else {
				onSwipe(diff);
			}
		}
	}
	
	void onTap() {
		if(tapDelegate != null) {
			tapDelegate();
		}
	}
	void onDrag(Vector3 vec) {
		if(dragDelegate != null) {
			dragDelegate(vec);
		}
	}
	
	void onSwipe(Vector3 vec) {
		SwipeDirection d;
		
		// horizontal
		if(System.Math.Abs(vec.x) > System.Math.Abs(vec.y)) {
			d = vec.x > 0 ? SwipeDirection.RIGHT : SwipeDirection.LEFT;
		}
		// vertical
		else {
			d = vec.y > 0 ? SwipeDirection.UP : SwipeDirection.DOWN;
		}
		
		if(swipeDelegate != null) {
			swipeDelegate(d);
		}
	}
}

//}