Unity实现简单摇杆的制作

第Unity实现简单摇杆的制作利用UGUI制作一个简单摇杆，效果图

1、首先建立两个Image,然后将其中一个为父物体，另一个为子物体，并且调整好大小:

ps:将子物体的锚点设置为居中

2、在父物体上写个JoyStick.cs脚本：

usingUnityEngine;

usingUnityEngine.EventSystems;

usingSystem.Collections;

publicclassJoyStick:MonoBehaviour,IDragHandler,IEndDragHandler,IBeginDragHandler

publicstaticfloath,v;//传出hv

publicfloatmaxDis;//最大距离

privateRectTransformchildRectTrans;

privateCoroutinecoroutine=null;

voidStart()

childRectTrans=transform.GetChild(0)asRectTransform;

publicvoidOnBeginDrag(PointerEventDataeventData)

if(coroutine!=null)

StopCoroutine(coroutine);

coroutine=null;

publicvoidOnDrag(PointerEventDataeventData)

Vector3outPos;

if(RectTransformUtility.ScreenPointToWorldPointInRectangle(this.transformasRectTransform,eventData.position,eventData.pressEventCamera,outoutPos))

childRectTrans.position=outPos;

//限制拖拽距离

childRectTrans.anchoredPosition=Vector2.ClampMagnitude(childRectTrans.anchoredPosition,maxDis);

//或者利用子物体和父物体的距离判断是否超过最大距离，当距离大于等于最大的距离时候，

//计算父物体和子物体的向量，然后利用向量*最大距离来限制拖拽距离

//if(Vector2.Distance(childRectTrans.position,this.transform.position)maxDis)

//Vector2dir=(childRectTrans.position-this.transform.position).normalized;

//childRectTrans.anchoredPosition=dir*maxDis;

GetHV();

publicvoidOnEndDrag(PointerEventDataeventData)

//当结束拖动，要将物体归0,为了加一点缓冲效果

//(1)可以使用dotween等补间动画插件,会减少很多

//rectTransform.DoAnchoredPos(Vector2.zero,0.5f);

//(2)或者使用携程这里使用携程

if(coroutine==null)

coroutine=StartCoroutine(IEToZeroPos(childRectTrans,0.1f));

privatevoidGetHV()

h=childRectTrans.anchoredPosition.x/maxDis;

v=childRectTrans.anchoredPosition.y/maxDis;

privateIEnumeratorIEToZeroPos(RectTransformrectTransform,floatduartion)

if(duartion==0f)

yieldreturnnull;

rectTransform.anchoredPosition=Vector2.zero;

GetHV();

coroutine=null;

yieldbreak;

Vector2currentpos=rectTransform.anchoredPosition;

floatoffx=currentpos.x/duartion;

floatoffy=currentpos.y/duartion;

while(rectTransform.anchoredPosition!=Vector2.zero)

yieldreturnnull;

rectTransform.anchoredPosition=newVector2(rectTransform.anchoredPosition.x-offx*Time.deltaTime,rectTransform.anchoredPosition.y-offy*Time.deltaTime);

GetHV();

if(rectTransform.anchoredPosition.sqrMagnitude8f)

rectTransform.anchoredPosition=Vector2.zero;

GetHV();

coroutine=null;

break;

}

另外附上Cube上面的脚本

privatevoidUpdate()

Vector3dir=newVector3(JoyStick.h,0,JoyStick.v);

if(dir.sqrMagnitude0)

transform.Translate(dir*3f*Time.deltaTime,Space.World);

QuaterniontargatRotate=Quaternion.LookRotation(dir,Vector3.up);

transform.rotation=Quaternion.Slerp(transform.rotation,targatRotate,3*Time.deltaTime);

}

加个使用doTween的吧

usingUnityEngine;

usingUnityEngine.EventSystems;

usingSystem.Collections;usingDG.Tweening;

publicclassJoyStick:MonoBehaviour,IDragHandler,IEndDragHandler,IBeginDragHandler

publicstaticfloath,v;//传出hv

publicfloatmaxDis;//最大距离

privateRectTransformchildRectTrans;

privateCoroutinecoroutine=null;

voidStart()

childRectTrans=transform.GetChild(0)asRectTransform;

publicvoidOnBeginDrag(PointerEventDataeventData)

if(coroutine!=null)

StopCoroutine(coroutine);

coroutine=null;

publicvoidOnDrag(PointerEventDataeventData)

Vector3outPos;

if(RectTransformUtility.ScreenPointToWorldPointInRectangle(this.transformasRectTransform,eventData.position,eventData.pressEventCamera,outoutPos))

childRectTrans.position=outPos;

//限制拖拽距离

childRectTrans.anchoredPosition=Vector2.ClampMagnitude(childRectTrans.anchoredPosition,maxDis);

//或者利用子物体和父物体的距离判断是否超过最大距离，当距离大于等于最大的距离时候，

//计算父物体和子物体的向量，然后利用向量*最大距离来限制拖拽距离

//if(Vector2.Distance(childRectTrans.position,this.transform.position)maxDis)

//Vector2dir=(childRectTrans.position-this.transform.position).normalized;

//childRectTrans.anchoredPosition=dir*maxDis;

GetHV();

publicvoidOnEndDrag(PointerEventDataeventData)

//当结束拖动，要将物体归0,为了加一点缓冲效果

//(1)可以使用dotween等补间动画插件,会减少很多

rectTran