使用Easy Touch 实现unity3d 虚拟摇杆

按惯例，先上效果图

1、新建一个地形，导入terrrain asset，把地面设成草地。

2、新建一个光源，不然地图会很暗

3、导入角色模型，在inspector调整scale，使人物的大小适合屏幕

4、使相机跟随人物，即在人物模型的后上方，这部分要用脚本实现，新建一个MyCamera的c#脚本，然后把它拖给主相机，并把人物模型的tag改为player，

代码如下

using UnityEngine;
using System.Collections;

public class MyCamera : MonoBehaviour {
    public float m_distanceAway = 4.5f;
    public float m_distanceUp = 1.76f;
    public float m_smooth = 5;
    public Transform m_player;
    private Transform m_transsform;
	// Use this for initialization
	void Start () {
        m_transsform = this.transform;
        m_player = GameObject.FindGameObjectWithTag("Player").transform;
	}
	
	// Update is called once per frame
	void Update () {
        float m_wangtedRotationAngle = m_player.eulerAngles.y;
        float m_wangtedHeight = m_player.transform.position.y + m_distanceUp;
        float m_currentRotationAngle = m_transsform.eulerAngles.y;
        float m_currentHeight = m_transsform.position.y;

        m_currentRotationAngle = Mathf.LerpAngle(m_currentRotationAngle, m_wangtedRotationAngle, m_smooth * Time.deltaTime);
        m_currentHeight = Mathf.Lerp(m_currentHeight, m_wangtedHeight, m_smooth * Time.deltaTime);
        Quaternion m_currentRotation = Quaternion.Euler(0, m_currentRotationAngle, 0);
        Vector3 m_position = m_player.transform.position;
        m_position -= m_currentRotation * Vector3.forward * m_distanceAway;
        m_position = new Vector3(m_position.x, m_currentHeight, m_position.z);
        m_transsform.position = Vector3.Lerp(m_transsform.position, m_position, Time.time);
        m_transsform.LookAt(m_player);

        RaycastHit hit;
        if (Physics.Linecast(m_player.position + Vector3.up, m_transsform.position, out hit)) //这里开始主要是使相机不会穿透模型
        {
            string name = hit.collider.gameObject.tag;
            if (name != "MainCamera")
            {
                float currentDistance = Vector3.Distance(hit.point, m_player.position);
                if (currentDistance < m_distanceAway)
                {
                    m_transsform.position = hit.point;
                }
            }
        }
	}
}
           

到这里运代项目就可以看到相机跟着人物模型了，下面加入easy touch

5、前面已经导入了easy touch，新建一个虚拟摇杆

在Game窗口就可以看到虚拟摇杆了，不过现在还不能操作角色，同时在Hierarchy窗口多了一个EayTouch和New joystick

6、EasyTouch不用管它，改一下New joystick的属性，如图

这个一定要改，其他属性自己看着改吧

7、新建一个PlayerCtr的c#脚本，并拖给人物模型，代码如下

using UnityEngine;
using System.Collections;

public class PlayerCtr : MonoBehaviour {
    public Transform m_transform;

	// Use this for initialization
	void Start () {
        m_transform = this.transform;
	}
	
	// Update is called once per frame
	void Update () {
	
	}

    void OnEnable()
    {
        Debug.Log("OnEnable()");
        EasyJoystick.On_JoystickMove += OnJoystickMove;
        EasyJoystick.On_JoystickMoveEnd += OnJoystickMoveEnd;
//        EasyButton.On_ButtonUp += On_ButtonUp;
    }

    void OnDisable()
    {
        EasyJoystick.On_JoystickMove -= OnJoystickMove;
        EasyJoystick.On_JoystickMoveEnd -= OnJoystickMoveEnd;
//        EasyButton.On_ButtonUp -= On_ButtonUp;
    }

    void OnDestroy()
    {
        EasyJoystick.On_JoystickMove -= OnJoystickMove;
        EasyJoystick.On_JoystickMoveEnd -= OnJoystickMoveEnd;
//        EasyButton.On_ButtonUp -= On_ButtonUp;
    }

    void OnJoystickMoveEnd(MovingJoystick move)
    {
        Debug.Log("OnJoystickMoveEnd()");
        animation.CrossFade("Idle");
    }

    void OnJoystickMove(MovingJoystick move)
    {
        Debug.Log("-----------------------------");
        Debug.Log("OnJoystickMove()");
        float joyPositionX = move.joystickAxis.x;
        float joyPositionY = move.joystickAxis.y;

        if (joyPositionY != 0 || joyPositionX != 0)
        {
            //设置角色的朝向（朝向当前坐标+摇杆偏移量）
            m_transform.LookAt(new Vector3(m_transform.position.x - joyPositionX, m_transform.position.y, m_transform.position.z - joyPositionY));
            //移动玩家的位置（按朝向位置移动）
            m_transform.Translate(Vector3.forward * Time.deltaTime * 7.5F);
            //播放奔跑动画
            animation.CrossFade("Run");
        }
    }
}
           

8、已经完成了，可以跑起来试一下了

工程文件