Unity_虚拟摇杆的实现_065

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

public class JoyStickController : MonoBehaviour,IDragHandler,IEndDragHandler {
//最大的拖动距离
public float maxDragDistance = 50f;
//虚拟摇杆的方向
public Vector3 direction;
//玩家
public GameObject player;
// Use this for initialization
void Start()
{

}

// Update is called once per frame
void Update()
{
//屏幕上的y轴分量 当作游戏世界里的z分量
//设置玩家的朝向
player.transform.forward = new Vector3(direction.x,0,direction.y);
int flag = Vector3.Distance(Vector3.zero, this.transform.localPosition) <1f ? 0 : 1;
player.transform.Translate(Vector3.forward * flag * Time.deltaTime,Space.Self);

}
//拖拽中的时候
public void OnDrag(PointerEventData eventData)
{
this.transform.position = Input.mousePosition;
if (Vector3.Distance(Vector3.zero,this.transform.localPosition) > maxDragDistance)
{
direction = this.transform.position - Vector3.zero;
this.transform.localPosition = direction.normalized * maxDragDistance;
}
}
//拖拽结束的时候
public void OnEndDrag(PointerEventData eventData)
{
this.transform.localPosition = Vector3.zero;
}
}