UGUI实现摇杆

效果图

 

 

立方体好比角色。可以利用右下角的摇杆控制角色移动

看看结构图

Image1：是外面圆圈

Image2：是蓝色圈

创建JoyStickScript.cs代码挂载在Image2上。这里没有实现控制立方体移动。有待改进

using UnityEngine;
using System.Collections;
using UnityEngine.UI;
using UnityEngine.EventSystems;

/// <summary>
/// 摇杆
/// </summary>
public class JoyStickScript : MonoBehaviour, IBeginDragHandler, IDragHandler, IEndDragHandler
{

    GameObject Player; //移动的对象

    Vector3 originPosition;//起点坐标
    Vector3 newPosition;
    public float Radius = 40; //滚动的最大半径
    float horizontal;
    float vertical;
    float speed;
    void Awake()
    {
        Player = GameObject.FindWithTag("Player");
    }

    // Use this for initialization
    void Start()
    {
        //originPosition = transform.position;//记录原点位置
    }

    // Update is called once per frame
    void Update()
    {
        //float horizontal = Input.GetAxis("Horizontal");
        //float veritcal = (transform.position.y - originPosition.y) / Radius;
        //vertical = (transform.position.y - originPosition.y) / Radius;
        //horizontal = (transform.position.x - originPosition.x) / Radius;
        //Player.transform.Translate(horizontal, vertical, 0);
        //Debug.Log(vertical);

    }

    public void OnEndDrag(PointerEventData eventData)
    {
        transform.position = originPosition; //归位到原点
    }

    Vector3 dir;
    public void OnDrag(PointerEventData eventData)
    {

        dir = (Input.mousePosition - originPosition).normalized;

        transform.position = Input.mousePosition; //设置当前摇杆位置

        //当超过了外面的圆圈
        if (Vector3.Distance(Input.mousePosition, originPosition) > Radius)
            transform.position = originPosition + dir * Radius;

        //vertical = (transform.position.y - originPosition.y) / Radius;
        //horizontal = (transform.position.x - originPosition.x) / Radius;
        print(originPosition + dir * Radius);
        Player.transform.position = dir * Time.deltaTime;
    }

    public void OnBeginDrag(PointerEventData eventData)
    {
        originPosition = transform.position;//记录原点位置
    }
}

 -------------------分割线  实现摇杆控制角色移动---------------------------------------

joystack是空对象

backgound是背景

JoystackControl是中间滚动虚拟轴

JoystackCc.cs代码挂载在JoystackControl上

using UnityEngine;
using System.Collections;
using UnityEngine.EventSystems;
/// <summary>
/// 这是主要来控制摇杆的。
/// </summary>
public class JoystackCc : MonoBehaviour
    , IBeginDragHandler, IDragHandler, IEndDragHandler
{

    public Vector3 originPosition;//起点坐标
    public float speed = 2f;//角色移动速度
    public float Radius = 40; //滚动的最大半径
    Vector3 dir; //滚动的方向


    public Vector3 MovePosiNorm;  //标准化移动的距离
    // Use this for initialization
    void Start()
    {

    }

    // Update is called once per frame
    void Update()
    {

    }

    public void OnBeginDrag(PointerEventData eventData)
    {
        originPosition = transform.position;
    }

    public void OnDrag(PointerEventData eventData)
    {
        //获取当前鼠标或者触摸算出拖动距离
        dir = (Input.mousePosition - originPosition).normalized;

        //拖到滚轮跟着鼠标走
        transform.position = Input.mousePosition;


        //originPosition = transform.position;

        //如果滚轮范围超过了外面的大圆 即大于可拖动距离
        if (Vector3.Distance(originPosition, Input.mousePosition) > Radius)
        {
            transform.position = originPosition + dir * Radius;
        }

        if (Vector3.Distance(transform.position, originPosition) > 1)  //距离大于激活移动的距离
        {
            MovePosiNorm = (transform.position - originPosition).normalized;
            MovePosiNorm = new Vector3(MovePosiNorm.x, 0, MovePosiNorm.y);
        }
        else
            MovePosiNorm = Vector3.zero;


        PlayerMoveControl.moveStart();
    }

    public void OnEndDrag(PointerEventData eventData)
    {
        transform.position = originPosition;
        PlayerMoveControl.moveEnd();
    }
}

PlayerMoveControl.cs代码挂载在角色上

using UnityEngine;
using System.Collections;

/// <summary>
/// 控制玩家移动
/// </summary>
public class PlayerMoveControl : MonoBehaviour
{

    private Transform _mTransform;
    public JoystackCc _mJoystackCc;

    public delegate void MoveDelegate();
    public static PlayerMoveControl Instance;
    public static MoveDelegate moveStart;
    public static MoveDelegate moveEnd;

    private float angle;
    private bool _turnBase = false;
    void Awake()
    {
        Instance = this;

        _mTransform = transform;
        moveStart = OnMoveStart;
        moveEnd = OnMoveEnd;
    }

    void OnMoveStart()
    {
        _turnBase = true;
    }
    void OnMoveEnd()
    {
        _turnBase = false;
    }


    // Use this for initialization
    void Start()
    {

    }

    // Update is called once per frame
    void Update()
    {
        if (_turnBase)
        {
            Vector3 vecMove = _mJoystackCc.MovePosiNorm * Time.deltaTime;

            _mTransform.position += vecMove;

            //把弧度转为角度
            angle = Mathf.Atan2(_mJoystackCc.MovePosiNorm.x, _mJoystackCc.MovePosiNorm.z) * Mathf.Rad2Deg;

            transform.rotation = Quaternion.Euler(Vector3.up * angle);

        }
    }
}

 

为了让相机跟随角色，

写个脚本挂载在相机上

using UnityEngine;
using System.Collections;

public class yid : MonoBehaviour
{

    Vector3 offset; //角色与相机之间的偏移量
    public Transform target; //需要跟踪的角色

    // Use this for initialization
    void Start()
    {
        //offset = transform.position - target.position;

        offset = target.position - transform.position;
    }

    // Update is called once per frame
    void Update()
    {
        transform.position = target.position - offset;
    }
}