滑动列表时实现平滑阻尼效果修改

狂风大尉

初始篇：

public GameObject groupObj;
float smoothTime = 0.1F;
float yVelocity = 0.0F;
float newPosition;
float temp;

float target;
void Update () {

if(Input.touchCount>0&&Input.GetTouch(0).phase==TouchPhase.Began)

temp=groupObj.transform.position.y;

if(Input.touchCount > 0 && Input.GetTouch(0).phase == TouchPhase.Moved){

Ray rayM = Camera.main.ScreenPointToRay (Input.mousePosition);

RaycastHit hitM;

if(Physics.Raycast (rayM, out hitM, 1000)&&hitM.transform.name=="Group"){

target=temp+Input.GetTouch(0).deltaPosition.y*10;

newPosition = Mathf.SmoothDamp(groupObj.transform.position.y,target, ref yVelocity, smoothTime);

groupObj.transform.position=new Vector3(groupObj.transform.position.x,newPosition,groupObj.transform.position.z);

}

}

else{

if(target>700)

target=700;

if(target<0)

target=0;

if(groupObj.transform.position!=new Vector3(groupObj.transform.position.x,target,groupObj.transform.position.z)){

print("move"+ target);

newPosition = Mathf.SmoothDamp(groupObj.transform.position.y,target, ref yVelocity, smoothTime);

groupObj.transform.position=new Vector3(groupObj.transform.position.x,newPosition,groupObj.transform.position.z);

}

}

}

之前的方法实现出来的效果不太好，会出现不在边界也会有，一拖动就返回的现象，所以又重新修改了一下，不同的地方在于将边界检测与正常情况拖动进行了分类处理。

正常情况的检测是通过间接控制速度，边界检测则是控制位移；之前的是列表的，只能纵向拖动，现在修改了之后改为不限定方向，只要不出一个矩形框的范围就行。

[csharp] view plaincopy
float touchDeltaPositionX;
float touchDeltaPositionY;
float maxX=0f;
float maxY=0f;
float targetX=0f;
float targetY=0f;
float newPositionX;
float newPositionY;


[csharp] view plaincopy
if(Input.touchCount > 0 && Input.GetTouch(0).phase == TouchPhase.Moved){
touchDeltaPositionX=Input.GetTouch(0).deltaPosition.x;
touchDeltaPositionY= Input.GetTouch(0).deltaPosition.y;
maxX=Mathf.Max(maxX,Mathf.Abs(touchDeltaPositionX));
maxY=Mathf.Max(maxY,Mathf.Abs(touchDeltaPositionY));
if(touchDeltaPositionX<0)
maxX=-maxX;
if(touchDeltaPositionY<0)
maxY=-maxY;
groupObj.transform.Translate(maxX*Time.deltaTime*10,maxY*Time.deltaTime*10,0);
}
else{
if(groupObj.transform.position.y>=-170&&groupObj.transform.position.y<=670f&&groupObj.transform.position.x>=-680&&groupObj.transform.position.x<=500){
if(!Mathf.Approximately(maxX,0f)||!Mathf.Approximately(maxY,0f)){
maxX=Mathf.MoveTowards(maxX,0f,0.6f);
maxY=Mathf.MoveTowards(maxY,0f,0.6f);
}
groupObj.transform.Translate(maxX*Time.deltaTime*10,maxY*Time.deltaTime*10,0);
}
else{
maxY=0;
maxX=0;
targetX=groupObj.transform.position.x;
targetY=groupObj.transform.position.y;
if(groupObj.transform.position.x>500)
targetX=500;
if(groupObj.transform.position.x<-680)
targetX=-680;
if(groupObj.transform.position.y>670)
targetY=670;
if(groupObj.transform.position.y<-170)
targetY=-170;
newPositionX = Mathf.SmoothDamp(groupObj.transform.position.x, targetX,ref xVelocity, smoothTime);
newPositionY = Mathf.SmoothDamp(groupObj.transform.position.y,targetY, ref yVelocity, smoothTime);
groupObj.transform.position=new Vector3(newPositionX,newPositionY,groupObj.transform.position.z);
}
}
}

Lau_Chingliang

谢谢分享

Mr_X

直接贴代码的NB

jedi

好文章 谢谢分享