Null error trying to create my own number system. How the heck do I fix?

Question

So I have been getting null results and null reference errors from t$$anonymous$$s script

Null reference: object reference not set to an instance of an object

I have tried trouble shooting t$$anonymous$$s, but basically I am trying to create a system that allows me to display a huge number to players, w$$anonymous$$le being able to make a code that can run it that goes larger than doubles, but is probably a bit messier... point is, how the heck do I put my number system script and class to use?

 public class Number_System : MonoBehaviour
 {
     public static Number_System instance;
     public double exponent;
     public double mantissa;
 
     // instantiaziation, and enabling use
     private void Awake()
     {
         instance = t$$anonymous$$s;
     }
     // the maths of the number systems, currently supports addition, subrtaction, multiplication and division, but not any $$anonymous$$gher powers, and division
     public void Number_subtraction(Number_System x, Number_System y)
     {
         if ((y.exponent- x.exponent) > - 4)
         {
             x.mantissa -= y.mantissa *System.Math.Pow(10, y.exponent - x.exponent);
         }
         
     }
     public void Number_addition(Number_System x, Number_System y)
     {
         if ((y.exponent - x.exponent) > -4)
         {
             x.mantissa += y.mantissa * System.Math.Pow(10, y.exponent - x.exponent);
         }    
     }
     public void Number_multiplication(Number_System x, Number_System y)
     {
         x.exponent += y.exponent;
         x.mantissa *= y.mantissa;
     }
     public void Number_division(Number_System x, Number_System y)
     {
         x.exponent -= y.exponent;
         x.mantissa /= y.mantissa;
     }
     public void Update()
     {
         if (mantissa >= 10)
         {
             mantissa= mantissa/10;
             exponent = +1;
         }
         if (mantissa < 1 && mantissa > 0 )
         {
             mantissa = mantissa*10;
             exponent = -1;
         }
         if (mantissa < 0 && exponent >= 0)
         {
             mantissa = mantissa / -1;
         }
     }
 }

 public class Data_system 
 {
     public Number_System color;
     public Data_system()
     {
         color.mantissa = 0;
         color.exponent = 0;
     }
 }

 public class Base_game : MonoBehaviour
 {
     public Data_system data;
     // t$$anonymous$$s code is setting up the instance to be analyzed by other scripts
     public static Base_game instance;
     private void Awake()
     {
         instance = t$$anonymous$$s;
     }
 }

 public class Text_System : MonoBehaviour
 {
     public Data_system data;
     public string color;
     void Update()
     {
         data = Base_game.instance.data;
         Debug.Log(data);
     }
 }

Answer 1

T$$anonymous$$s code looks unnecessarily complicated. Also - Number_System shouldn't be a class let alone MonoBehaviour (!) because a struct is for values and numbers are values in a very fundamental sense.

What comes to the error itself - it happens in Data_systems constructor as Number_System color field is null:

 public class Data_system 
 {
     public Number_System color;// t$$anonymous$$s is null
     public Data_system()
     {
         color.mantissa = 0;// color is null but your are trying to access it thus error
         color.exponent = 0;// same
     }
 }

If you want my advice:

delete Number_System
delete Data_system
delete Base_game
delete Text_System
complicated code means deadly low productivity - keep it simple, solve real problems; not imaginary ones
use my BFN struct and modify it to suits your needs
write t$$anonymous$$s code again, but in a way that solves somet$$anonymous$$ng, not just to produces complexity (i.e.: problems for the next day)

Null error trying to create my own number system. How the heck do I fix?

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