unity 射线检测真机失效_Unity射线检测的各种方法（不是原创）

1.普通射线检测(一般用于检测某一个物体)

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

Debug.DrawRay(ray.origin ,ray.direction , Color.red);

RaycastHit hit;

if(Physics .Raycast (ray,out hit,int.MaxValue,1<

{

Debug.Log("检测到物体");

}

2.直线射线检测多个物体

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

Debug.DrawRay(ray.origin ,ray.direction , Color.red);

RaycastHit[] hit = Physics.RaycastAll(ray, Mathf.Infinity, 1 << LayerMask.NameToLayer("layername"));

if(hit .Length >0)

{

for (int i = 0; i < hit.Length ; i++)

{

Debug.Log("检测到物体"+hit[i].collider.name );

}

}

3.球形射线检测(一般用于检测周边物体)

int radius = 3;

Collider[] cols = Physics.OverlapSphere(this.transform.position, radius, Layer