using Physics.Raycast to run functions on diffrent gameObjects?

Question

Hi im having trouble using Physics.Raycast to run functions on a game object it seems somewhat simple but i cant for the life of me see what im missing. If anyone could look over this bit of code for me and give me a hint for what im missing i would be very much in there debt

GUIScript

 public bool _Scanning = false;
 public Ray ray;
 public RaycastHit hit;
 // Update is called once per frame
 void Update () {
     if (_Scanning == true){
         if(Input.GetButton("Fire1")) {
             ray = Camera.main.ScreenPointToRay(Input.mousePosition);
             Scan();
         }
     }
 }
 private string type;
 private int surfTemp;
 private float mass;
 private float radius;
 
 void Scan(){
     if (Physics.Raycast(ray, out hit, 20)){
     Debug.DrawLine(ray.origin, hit.point);
         if (hit.transform.gameObject.GetComponent<StarTypeA>()){
             type = StarTypeA.GetStarType();
             surfTemp = StarTypeA.GetStarTemp();
             mass = StarTypeA.GetStarMass();
             radius = StarTypeA.GetStarRadius();
             _Scanning = false;
             Menu ("showScan");
         }
     }
 }

Stars Script (that StarTypeA inherits from)

 string type;
 
 int surfTemp;
 float mass;
 float radius;
     
 string desc;
 
 public int planetCount;
     
 // Use this for initialization
 void Start () {
     
 }
 
 // Update is called once per frame
 void Update () {
     
 }
 public string GetStarType (){
     return type;
 }
 public int GetStarTemp(){
     return surfTemp;
 }
 public float GetStarMass(){
     return mass;
 }
 public float GetStarRadius(){
     return radius;
 }
 public int GetPlanetCount(){
     return planetCount;
 }

At the moment the error im getting is: 'error CS0120: An object reference is required to access non-static member'

But i was under the impression that i had an object reference from the raycast but now i just dont know. so im guessing that i have missed something somewhere.

again any help would be very much appreciated

Answer 1

You get a 'error CS0120: An object reference is required to access non-static member' because your GetStartType() are non static function that cannot be accessed using this line 'StarTypeA.GetStarType()`, the same goes for other functions:

 void Scan(){
     if (Physics.Raycast(ray, out hit, 20)){
     Debug.DrawLine(ray.origin, hit.point);
         if (hit.transform.gameObject.GetComponent<StarTypeA>()){
             //Calling non-static function in a static way
             type = StarTypeA.GetStarType();
             ...
         }
     }
 }

But i was under the impression that i had an object reference from the raycast

You have the GetComponent<>(), and it returns a component/null, but you never assign it to anything at all, so the returned item is used once in the if-statement.

Correction

 void Scan(){
     if (Physics.Raycast(ray, out hit, 20)){
         StarTypeA sta = hit.transform.gameObject.GetComponent<StarTypeA>();  
  
         if ( sta != null ){
             type = sta.GetStarType();
             surfTemp = sta.GetStarTemp();
             mass = sta.GetStarMass();
             radius = sta.GetStarRadius();
             _Scanning = false;
             Menu ("showScan");
         }
     }
 }

using Physics.Raycast to run functions on diffrent gameObjects?

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