[游戏开发]Unity 射线、直线检测碰撞

1、射线检测

Vector3 pos = Vector3.one;//点
Vector3 dir = Vector3.zero;//方向
RaycastHit[] rhs = Physics.RaycastAll(pos, dir);
if (rhs.Length > 0)
{
      Debug.Log("碰撞点：" + rhs[0].point);
}

2、直线检测1

Vector3 pos = Vector3.one;//点
Vector3 dir = Vector3.zero;//方向
float distance = 0; //距离
RaycastHit[] rhs = Physics.RaycastAll(pos, dir, distance);
if (rhs.Length > 0)
{
     Debug.Log("碰撞点：" + rhs[0].point);
}

3、直线检测2

Vector3 from = Vector3.one;;//起始点
Vector3 to = Vector3.zero;;//目的点
RaycastHit rh;
if (Physics.Linecast(from, to, out rh, LayerMask.GetMask("Terrain")))//Layer区分检测碰撞类型
{
     Debug.Log("碰撞点" + rh.point);
}