Unity实现手指滑屏

　　我使用Input的Touch和EasyTouch各实现了滑屏方案，基本原理就是得到滑屏移动时的二维向量，通过向量获取究竟是向哪个方向滑动，通过自定义的状态来实现。下面上代码：

下面是EasyTouch实现的：

 1 using UnityEngine;
 2 using System.Collections;
 3
 4 public enum SwipeDir
 5 {
 6     idle,   //没有滑动
 7     left,
 8     right,
 9     up,
10     down
11 }
12
13 public class MyEasyTouch : MonoBehaviour
14 {
15     [HideInInspector]
16     public  SwipeDir swipeDir = SwipeDir.idle;
17     Vector2 swipeVector;
18
19     public bool isLeftSwipe = false;
20     public bool isRightSwipe = false;
21     public bool isUpSwipe = false;
22     public bool isDownSwipe = false;
23
24
25     void OnEnable()
26     {
27         //EasyTouch.On_Swipe += OnSwipe;
28         EasyTouch.On_SwipeEnd += OnSwipe;
29     }
30
31     void OnDisable()
32     {
33         //EasyTouch.On_Swipe -= OnSwipe;
34         EasyTouch.On_SwipeEnd -= OnSwipe;
35
36
37     }
38
39     void OnDestroy()
40     {
41         EasyTouch.On_SwipeEnd -= OnSwipe;
42     }
43
44     public void OnSwipe(Gesture gesture)
45     {
46         swipeVector = gesture.swipeVector;
47         switch (GetCurrentSwipeDirection())
48         {
49             case SwipeDir.left:
50                 isLeftSwipe = true;
51                 break;
52             case SwipeDir.right:
53                 isRightSwipe = true;
54                 break;
55             case SwipeDir.up:
56                 isUpSwipe = true;
57                 break;
58             case SwipeDir.down:
59                 isDownSwipe = true;
60                 break;
61
62         }
63     }
64
65     public SwipeDir GetCurrentSwipeDirection()
66     {
67         if (Mathf.Abs(swipeVector.x) > Mathf.Abs(swipeVector.y))
68         {
69             if (swipeVector.x > 0)
70             {
71                 return SwipeDir.right;
72             }
73             else if (swipeVector.x < 0)
74             {
75                 return SwipeDir.left;
76             }
77         }
78         if (Mathf.Abs(swipeVector.x) < Mathf.Abs(swipeVector.y))
79         {
80             if (swipeVector.y > 0)
81             {
82                 return SwipeDir.up;
83             }
84             else if (swipeVector.y < 0)
85             {
86                 return SwipeDir.down;
87             }
88         }
89
90         return SwipeDir.idle;
91     }
92
93 }

MyEasyTouch

下面是Unity自带的Touch类实现的：

 1 using UnityEngine;
 2 using System.Collections;
 3
 4 enum TouchMoveDir
 5 {
 6     idle,left,right,up,down
 7 }
 8
 9 public class TouchTest : MonoBehaviour {
10     public GameObject target;
11     float minDis = 1;
12     TouchMoveDir moveDir;
13
14     // Use this for initialization
15     void Start () {
16         Input.multiTouchEnabled = true;
17         Input.simulateMouseWithTouches = true;
18     }
19
20     // Update is called once per frame
21     void Update () {
22         if (Input.touchCount > 0 && Input.GetTouch(0).phase == TouchPhase.Moved)
23         {
24             if(Input.GetTouch(0).deltaPosition.sqrMagnitude > minDis)
25             {
26                 Vector2 deltaDir = Input.GetTouch(0).deltaPosition;
27                 if(Mathf.Abs(deltaDir.x) > Mathf.Abs(deltaDir.y))
28                 {
29                     moveDir = deltaDir.x>0?TouchMoveDir.right:TouchMoveDir.left;
30                 }
31                 if(Mathf.Abs(deltaDir.y) > Mathf.Abs(deltaDir.x))
32                 {
33                     moveDir = deltaDir.y>0?TouchMoveDir.up:TouchMoveDir.down;
34                 }
35             }
36         }
37
38         if (Input.touchCount > 0 && Input.GetTouch (0).phase == TouchPhase.Ended) {
39             moveDir = TouchMoveDir.idle;
40         }
41
42         if (moveDir == TouchMoveDir.right) {
43             Debug.Log("right");
44             target.transform.position += transform.right * 0.2f;
45         }
46         if (moveDir == TouchMoveDir.left) {
47             Debug.Log("left");
48             target.transform.position -= transform.right * 0.2f;
49         }
50         if (moveDir == TouchMoveDir.up) {
51             target.transform.position += transform.up * 0.2f;
52         }
53         if (moveDir == TouchMoveDir.down) {
54             target.transform.position -= transform.up * 0.2f;
55         }
56     }
57 }

TouchMoveDir