据说

Temple Run（神庙逃亡）

就是用这种方式操作的

废话不多说

直接上代码

using UnityEngine;

using System.Collections;

public class Touch : MonoBehaviour

{

    private Vector2 beginPos;

    // Use this for initialization

    void Start()

    {

    }

    // Update is called once per frame

    void Update()

    {

        TouchDirection();

    }

    void TouchDirection()

    {

        if (Input.touchCount <= 0)

            return;

        if (Input.touchCount == 1)

        {

            if (Input.touches[0].phase == TouchPhase.Began)

            {

                beginPos = Input.touches[0].positon;

            }

            else if (Input.touches[0].phase == TouchPhase.Moved)

            {

            }

            if (Input.touches[0].phase == TouchPhase.Ended && Input.touches[0].phase != TouchPhase.Canceled)

            {

                Vector2 pos = Input.touches[0].position;

                if (Mathf.Abs(beginPos.x = pos.x) > Mathf.Abs(beginPos.y = pos.y))

                {

                    if (beginPos.x > pos.x)

                    {

                        //向左

                    }

                    else

                    {

                        //向右

                    }

                }

                else

                {

                    if (beginPos.y > pos.y)

                    {

                        //向下

                    }

                    else

                    {

                        //向上

                    }

                }

            }

        }

    }

}

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