unity中手指滑动事件

using UnityEngine;
using System.Collections;public class jarodInputController : MonoBehaviour {private float fingerActionSensitivity = Screen.width * 0.05f; //手指动作的敏感度，这里设定为 二十分之一的屏幕宽度.
//
private float fingerBeginX;
private float fingerBeginY;
private float fingerCurrentX;
private float fingerCurrentY;
private float fingerSegmentX;
private float fingerSegmentY;
//
private int fingerTouchState;
//
private int FINGER_STATE_NULL = 0;
private int FINGER_STATE_TOUCH = 1;
private int FINGER_STATE_ADD = 2;
// Use this for initialization
void Start ()
{
fingerActionSensitivity = Screen.width * 0.05f;fingerBeginX = 0;
fingerBeginY = 0;
fingerCurrentX = 0;
fingerCurrentY = 0;
fingerSegmentX = 0;
fingerSegmentY = 0;fingerTouchState = FINGER_STATE_NULL;
}
// Update is called once per frame
void Update ()
{if (Input.GetKeyDown (KeyCode.Mouse0))
{if(fingerTouchState == FINGER_STATE_NULL)
{
fingerTouchState = FINGER_STATE_TOUCH;
fingerBeginX = Input.mousePosition.x;
fingerBeginY = Input.mousePosition.y;
}}if(fingerTouchState == FINGER_STATE_TOUCH)
{
fingerCurrentX = Input.mousePosition.x;
fingerCurrentY = Input.mousePosition.y;
fingerSegmentX = fingerCurrentX - fingerBeginX;
fingerSegmentY = fingerCurrentY - fingerBeginY;}if (fingerTouchState == FINGER_STATE_TOUCH)
{
float fingerDistance = fingerSegmentX*fingerSegmentX + fingerSegmentY*fingerSegmentY; if (fingerDistance > (fingerActionSensitivity*fingerActionSensitivity))
{
toAddFingerAction();
}
}if (Input.GetKeyUp(KeyCode.Mouse0))
{
fingerTouchState = FINGER_STATE_NULL;
}
}private void toAddFingerAction()
{fingerTouchState = FINGER_STATE_ADD;if (Mathf.Abs (fingerSegmentX) > Mathf.Abs (fingerSegmentY))
{
fingerSegmentY = 0;
}
else
{
fingerSegmentX = 0;
}if (fingerSegmentX == 0)
{
if (fingerSegmentY > 0)
{
Debug.Log ("up");
}
else {
Debug.Log ("down");
}
}
else if(fingerSegmentY == 0)
{
if(fingerSegmentX > 0)
{
Debug.Log ("right");
}
else
{
Debug.Log("left");
}
}}
}

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