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Question by InspectorStrange · Jul 05, 2016 at 12:47 PM · listnullreferenceexceptiondynamic

Number of methods based on dynamic list count?

I have a list of classes which I want to call upon, but the list count changes, so I have to make sure I don't reference an index which doesn't exist;

 void Update()
     {
         {
             Class class1 = listOfClasses[0];
             if (Input.GetButtonDown("Fire1")) { class1.DoClass(); }
         }
 
         if (listOFClasses.Count <= 1)
         { return; }
         else {
             Class class2 = listOfClasses[1];
             if (Input.GetButtonDown("Fire2")) { class2.DoClass(); }
         }
     

etc etc

Is there some way I can use the List.Count to create the number of call functions I need, or some other better way, rather than checking the list count at every method call?

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Answer by NoseKills · Jul 06, 2016 at 04:29 PM

Something like this perhaps.

 for (int i = 0; i < listOfClasses.Count; i++) {
     string fireName = "Fire" + (i + 1);
     if (Input.GetButtonDown(fireName)) { 
         listOfClasses[i].DoClass(); 
     }
 }
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