简单的鱼群算法实现
public class TankGroup : MonoBehaviour {
private static List tankGroups;//所有组
public LayerMask mask;//成员层
public int groupID=0;//组id
public float keepDistance=10, keepWeight=1;//成员保持距离和保持距离权重
public float targetCloseDistance=20,targetWeight=1.25f, moveWeight=0.8f;//距离目标距离，距离目标权重和成员移动权重
}
public class TankBehaviour : MonoBehaviour {
private const float minMoveCheck=0.2f;
public int groupId=0;//组 id
public float moveSpeed=5, rotateSpeed=20;//移动旋转速度
public Vector3 position{
get{return transform.position;}
}
public Vector3 movement{
get{returnmyMovement;}
}
private Vector3 myMovement=Vector3.zero;
private TankGroup myGroup;
private float tgtSpeed=0, speed=0, currentSpeed;
public void SetGroup(int index){
myGroup=TankGroup.GetTankGroup(index);
}
// Use this for initialization
void Start () {
SetGroup(groupId);
}
// Update is called once per frame
void Update () {
Vector3 displacement=myGroup.targetPosition-position;//获取目标距离
Vector3 direction=displacement.normalized*myGroup.targetWeight;//方向*权重
if(displacement.magnitude//重新计算目的地距离权重
direction*=displacement.magnitude/myGroup.targetCloseDistance;
direction+=GetGroupMovement();//获取周围组的移动
if((myGroup.targetPosition-position).magnitude//计算移动速度
tgtSpeed=0;
else
tgtSpeed=moveSpeed;
speed=Mathf.Lerp(speed,tgtSpeed,2*Time.deltaTime);
Drive(direction, speed);//移动
}
private Vector3 GetGroupMovement(){
Collider[] c=Physics.OverlapSphere(position,myGroup.keepDistance,myGroup.mask);//获取周围成员
Vector3 dis,v1=Vector3.zero, v2=Vector3.zero;
for(int i=0; i
TankBehaviour otherTank=c[i].GetComponent();
dis=position-otherTank.position;//距离
v1+=dis.normalized*(1-dis.magnitude/myGroup.keepDistance);//查看与周围单位的距离
v2+=otherTank.movement;//查看周围单位移动方向
Debug.DrawLine(position, otherTank.position, Color.yellow);
}
return v1.normalized*myGroup.keepWeight+v2.normalized*myGroup.moveWeight;//添加权重因素
}
private void Drive(Vector3 direction, float spd){
Vector3 finialDirection=direction.normalized;
float finialSpeed=spd, finialRotate=0;
floatrotateDir=Vector3.Dot(finialDirection,transform.right);
floatforwardDir=Vector3.Dot(finialDirection,transform.forward);
if(forwardDir<0)
rotateDir=Mathf.Sign(rotateDir);
if(forwardDir<-0.2f)
finialSpeed=Mathf.Lerp(currentSpeed,-spd*8,4*Time.deltaTime);
if(forwardDir<0.98f)//防抖
finialRotate=Mathf.Clamp(rotateDir*180,-rotateSpeed, rotateSpeed);
finialSpeed*=Mathf.Clamp01(direction.magnitude);
finialSpeed*=Mathf.Clamp01(1-Mathf.Abs(rotateDir)*0.8f);
transform.Translate(Vector3.forward*finialSpeed*Time.deltaTime);
transform.Rotate(Vector3.up*finialRotate*Time.deltaTime);
currentSpeed=finialSpeed;
myMovement=direction*finialSpeed;
}
}