首先要在摄像机中添加组件Physics Raycaster
void Update () {
if(Input.GetMouseButtonUp(0)){
Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
RaycastHit rayhit;
if (Physics.Raycast(ray, out rayhit))
{
Debug.Log(rayhit.collider.gameObject.name);
}
}
}