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Question by Griffo · Jul 09, 2013 at 12:39 PM · variabletostring

Change a variable with ToString()

Is there a way of doing this, I have a global variable that is on a global script called GlobalVars ..

 globalVarsScript.carType1Petrol[carNumber] = petrol;

what I'd like to do is change the 1 in carType1Petrol to 2, 3, ect .. by using myInt.ToString() .. can this be done as it's a variable ? And when I try it says " is not a member of 'GlobalVars' "

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avatar image robertbu · Jul 09, 2013 at 01:27 PM 0
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You cannot do what you are trying to do. You will need to make an array of CarTypePetrol. Then you can index:

 globalVarsScript.carTypePetrol[type][carNumber] = petrol;
avatar image Griffo · Jul 09, 2013 at 06:20 PM 0
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Thanks for the input, much appreciated ..

avatar image Griffo · Jul 09, 2013 at 07:32 PM 0
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I read somewhere Unityscript doesn't have the syntax required to explicitly define the type of a jagged array, I thought it would be this ..

 public var carTypePetrol : int[][] = new int[10][10];

So how would I initialize the above ?

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Answer by MicroEyes · Jul 09, 2013 at 01:30 PM

You could use reflection. For example if PropertyName is a public property on MyClass and you have an instance of this class you could:

 MyClass myClassInstance = ...
 double temp = (double)typeof(MyClass).GetProperty("PropertyName").GetValue(myClassInstance, null);

If it's a public field:

 MyClass myClassInstance = ...
 double temp = (double)typeof(MyClass).GetField("FieldName").GetValue(myClassInstance);

Of course you should be aware that reflection doesn't come free of cost. There could be a performance penalty compared to direct property/field access.

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avatar image Griffo · Jul 09, 2013 at 06:20 PM 0
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Thanks for the input, much appreciated ..

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Answer by tw1st3d · Jul 09, 2013 at 06:24 PM

You could make an enum for your car types.

 enum CarTypes
 {
     Petrol;
     Type2;
     Type3;
 }
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avatar image Griffo · Jul 09, 2013 at 06:39 PM -1
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tw1st3d, I dont think I can use an enum as I would have to do something like ..

     switch (CarType) {
         case carChoices.One:
             fuel = carType1Petrol;
             break;
         case carChoices.Two:
             fuel = carType2Petrol;
             break;
         case carChoices.Three:
             fuel = carType3Petrol;
             break;
         default:
             Debug.LogError("Unrecognized Option");
             break;
     }

But then if I put ..

 globalVarsScript.fuel[carNumber] = petrol;

I get the error "fuel is not a member of 'GlobalVars' "

avatar image tw1st3d · Jul 09, 2013 at 07:57 PM 0
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 namespace CarType
 {
     
     public class CarTypes
     {
         
         public int CarType = 0;
         public String fuel;
         
         enum FuelTypes
         {
             PETROL;
             FUEL2;
             FUEL3;
         }
 
         public void FindCarType()
         {
         
             switch(CarType)
             {
                 case 1:
                     fuel = FuelTypes.PETROL;
                 case 2:
                     fuel = FuelTypes.FUEL2;
                 case 3:
                     fuel = FuelTypes.FUEL3;
             }
             
         }
     
     }
     
 }

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