Similar scripts but error on one and not the other

Question

I have a script with two functions in, then i have two other scripts, where i am trying to access these two functions in. The first script Works fine and it is calling the function, but in the other script i have called the function in the same way as the first one, but i get the error " Invalid field type 'void' " why?

Here is the script with the functions in.

 //EScript.js
                 
                 static function AddL() {
                 if (lives < maxLives)
                 {
                     lives++;
                     PlayerPrefs.SetInt("lives", lives);
                 }
             }         
         
             static function SubL(){
                 if(lives <= 0)
                     return false;
                 if (lives == maxLives)
                 {
                     nextLife = UnixTimestamp() + RegenInterval;
                 }
                 PlayerPrefs.SetInt("nextLife", nextLife);
                 lives--;
                 PlayerPrefs.SetInt("lives", lives);
                 return true;
             }

Here is the first "access script" this one works.

 var subfunct = EScript.SubL();
         
         function OnGUI() {
                 
                 
                 if (GUI.Button(Rect(100,100,120,40),"Level 1")){
                         EScript.SubL();
                         Application.LoadLevel("leveltimetestscerne");    
                     }        
         }

And here is the second "access" script this one doesn't work.

  var addfunct = EScript.AddL();   // this is the line where the error is
     
     function OnTriggerEnter(other : Collider) {
      
         if (other.gameObject.tag == "Player") 
         {  
             EScript.AddL();    
          } 
     }

Answer 1

SubL returns a value, but AddL does not. EScript.AddL() executes the function, but nothing is returned, that is why you can't assign the return value to addfunct.

I imagine one of two things is happening. Either you forgot to put return values into AddL(), or you are trying to use addfunct as a delegate.

A: If you forgot to put the return statements in:

 // perhaps you wanted something like this?
 static function AddL() {
     if (lives < maxLives)
     {
         lives++;
         PlayerPrefs.SetInt("lives", lives);
         return true; // success
     }
     return false; // failure
 }

B: If you wanted to use delegates:

Your syntax would be incorrect. You should remove the brackets in your delegate assignment var addfunct = EScript.AddL, and then use the delegate with the delegate variable name addfunct().

Second script using a delegate:

 var addfunct = EScript.AddL;
 
 function OnTriggerEnter(other : Collider) 
 {
     if (other.gameObject.tag == "Player") 
     {  
         addfunct();    
     } 
 }

Similar scripts but error on one and not the other

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