Question about Inheritance in Unity

Questions & Answers
1

I am using inheritance (C#) with a base class that has 

public GameSystem temp = (GameSystem)GameObject.Find("Manager").GetComponent("GameSystem");

and I want my subclasses to be able to use temp, but whenever i try to use temp i get this error

NullReferenceException: Object reference not set to an instance of an object TargetControl.OnMouseDown () (at Assets/Scripts/TargetControl.cs:37) UnityEngine.SendMouseEvents:DoSendMouseEvents()ne.SendMouseEvents:DoSendMouseEvents()

But this works. But if I replace Debug.log with the base class object it errors.

    GameSystem temp = (GameSystem)GameObject.Find("Manager").GetComponent("GameSystem");
    Debug.Log(temp.gameTimer);
2

You can use the generic version of GetComponent() instead, e.g.:

GameSystem temp = GameObject.Find("Manager").GetComponent<GameSystem>();

However, I don't think you can use Unity API functions such as Find() in field initializers or constructors (or at least you're not supposed to). Instead, you should perform initializations of that sort in Awake() or Start().

Not sure what you mean about the Debug.Log() part.