Game Play Maker : [轉貼]Unity 常用腳本 – 滑鼠、手機螢幕觸摸 控制畫面

using UnityEngine;
using System.Collections;

//增加觸碰操作功能，控制攝影機運動
public class Touch : MonoBehaviour
{
    //紀錄手指觸碰位置
    Vector2 m_screenPos = new Vector2 ();
    void Start ()
    {
        //允許多點觸碰
        Input.multiTouchEnabled = true;
    }
    void Update ()
    {
        //判斷平台
        #if !UNITY_EDITOR && (UNITY_IOS || UNITY_ANDROID)
        MobileInput ();
        #else
        DeskopInput();
        #endif
    }
}

void DeskopInput ()
{
    //紀錄滑鼠左鍵的移動距離
    float mx = Input.GetAxis ("Mouse X");
    float my = Input.GetAxis ("Mouse Y");
    float speed=6.0f;

    if (mx != 0 || my != 0)
    {
        //滑鼠左鍵
        if (Input.GetMouseButton (0))
        {
                //移動攝影機位置
            Camera.main.transform.Translate (new Vector3 (-mx * Time.deltaTime*speed, -my * Time.deltaTime*speed, 0));
        }
    }
}

void MobileInput ()
{
    if (Input.touchCount <= 0)
        return;
    //1個手指觸碰螢幕
    if (Input.touchCount == 1)
    {
       //開始觸碰
       if (Input.touches [0].phase == TouchPhase.Began)
       {
          //紀錄觸碰位置
          m_screenPos = Input.touches [0].position;
          //手指移動
       }
       else if (Input.touches [0].phase == TouchPhase.Moved)
       {
            //移動攝影機
            Camera.main.transform.Translate (new Vector3 (-Input.touches [0].deltaPosition.x * Time.deltaTime, -Input.touches [0].deltaPosition.y * Time.deltaTime, 0));
       }
        //手指離開螢幕
        if (Input.touches [0].phase == TouchPhase.Ended && Input.touches [0].phase == TouchPhase.Canceled)
        {
            Vector2 pos = Input.touches [0].position;
            //手指水平移動
            if (Mathf.Abs (m_screenPos.x - pos.x) > Mathf.Abs (m_screenPos.y - pos.y))
            {
               if (m_screenPos.x > pos.x)
               {
                  //手指向左滑動
               }
               else
               {
                   //手指向右滑動
               }
            }
            else
            {
                if (m_screenPos.y > pos.y)
                {
                   //手指向下滑動
                }
                else
                {
                    //手指向上滑動
                }
            }
        }

    }
    //攝影機縮放，如果1個手指以上觸碰螢幕
    else if (Input.touchCount > 1)
    {
        //記錄兩個手指位置
        Vector2 finger1 = new Vector2 ();
        Vector2 finger2 = new Vector2 ();

        //記錄兩個手指移動距離
        Vector2 move1 = new Vector2 ();
        Vector2 move2 = new Vector2 ();

        //是否是小於2點觸碰
        for (int i=0; i<2; i++)
        {
            UnityEngine.Touch touch = UnityEngine.Input.touches [i];

            if (touch.phase == TouchPhase.Ended)
                break;

            if (touch.phase == TouchPhase.Moved)
            {
                //每次都重置
                float move = 0;

                //觸碰一點
                if (i == 0)
                {
                    finger1 = touch.position;
                    move1 = touch.deltaPosition;

                }
                else      //另一點
                {
                    finger2 = touch.position;
                    move2 = touch.deltaPosition;

                    //取最大X
                    if (finger1.x > finger2.x)
                    {
                        move = move1.x;
                    }
                    else
                    {
                        move = move2.x;
                    }

                    //取最大Y，並與取出的X累加
                    if (finger1.y > finger2.y)
                    {
                        move += move1.y;
                    }
                    else
                    {
                        move += move2.y;
                    }

                    //當兩指距離越遠，Z位置加的越多，相反之
                    Camera.main.transform.Translate (0, 0, move * Time.deltaTime);
                }
            }
        }//end for
    }//end else if
}//end void