Demo试玩（Kongregate既然也有广告时间了 --！）http://www.kongregate.com/games/zhaoqingqing/2d-touch-movement

操作步骤

1、下载素材 http://pan.bai du.com/s/1gdkQz8v

2、新建三个GUITexture(Joystick)及一个Sprite(Nyan)

场景搭建

3、创建背景及Platform(添加BoxCollider2D)

TouchControls.cs

4、创建脚本 TouchControls.cs

using UnityEngine;
using System.Collections;public class TouchControls : MonoBehaviour {//gui Texturespublic GUITexture guiLeft;public GUITexture guiRight;public GUITexture guiJump;//moement variablespublic float moveSpeed = 5f;public float jumpForce = 50f;public float maxJumpVelocity = 2f;private bool moveLeft, moveRight, doJump = false;// Use this for initializationvoid Start () {}// Update is called once per framevoid Update () {//check to see if the screen is being touchedif (Input.touchCount > 0){Touch t = Input.GetTouch(0);//get the touch info//did the touch active just begin?if (t.phase == TouchPhase.Began){//are we touching  the left arrow?if (guiLeft.HitTest(t.position, Camera.main)){Debug.Log("Touching left Control");moveLeft = true;}if (guiRight.HitTest(t.position, Camera.main)){Debug.Log("Touching right Control");moveRight = true;}if (guiJump.HitTest(t.position, Camera.main)){Debug.Log("Touching jump Control");doJump = true;}}//did the touch end?if (t.phase == TouchPhase.Ended){doJump = moveLeft = moveRight = false;rigidbody2D.velocity = Vector2.zero;}}//is the left mouse button down?if (Input.GetMouseButtonDown(0)){if (guiLeft.HitTest(Input.mousePosition, Camera.main)){Debug.Log("touching left control");moveLeft = true;}if (guiRight.HitTest(Input.mousePosition, Camera.main)){Debug.Log("touching right control");moveRight = true;}if (guiJump.HitTest(Input.mousePosition, Camera.main)){Debug.Log("touching jump control");doJump = true;}}if (Input.GetMouseButtonUp(0)){doJump = moveLeft = moveRight = false;rigidbody2D.velocity = Vector2.zero;}}void FixedUpdate(){if (moveLeft){rigidbody2D.velocity = -Vector2.right * moveSpeed;}if (moveRight){rigidbody2D.velocity = Vector2.right * moveSpeed;}if (doJump){ If we have not reached the maximum jump velocity, keep applying force.if (rigidbody2D.velocity.y < maxJumpVelocity){rigidbody2D.AddForce(Vector2.up * jumpForce);}else{//otherwise stop jumpingdoJump = false;}}}
}

资源下载

工程下载：http://pan.baidu.com/s/1dDpEkhz