How do you use a variable in a line of code?

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Hello, Alright, I am having a big problem here and I cannot for the life of me find a solution to it.

I have a Javascript file that contains my classes, as of now there is only one.

 //This script holds all classes and there data
 
 class trackInfo
 {
     var scenename : String;
     var name : String;
     var length : int;
     var bestlaptime : float;
     var type : String;
     var series : String;
 }

I then have another script that holds the instances and there variable values.

 //Track Info Holder
 
 static var track1 = trackInfo();
     track1.scenename = "track1";
     track1.name = "Townsville Practice Day";
     track1.length = 300;
     track1.bestlaptime = 999;
     track1.type = "Hybrid Supercross";
     track1.series = "Queensland ClubCross";
     
 static var track2 = trackInfo();
     track2.scenename = "track2";
     track2.name = "Supercross";
     track2.length = 300;
     track2.bestlaptime = 999;
     track2.type = "Hybrid Supercross";
     track2.series = "Queensland ClubCross";

The issue arises when I try to set one of these value dependent on what scene I am in. So the normal way would be the following

 //On GUI
 
 bestlaptime = TrackInfoHolder.track1.bestlaptime;

But rather than have track1 in there, I want it to be dependent on my scene, my scene names are track1, track2, track3 respectively.

So my thought would be something like this

 bestlaptime = TrackInfoHolder.(Application.loadedLevelName).bestlaptime;

Of course I have tried this and it doesn't work. Is there any other way to go about a solution to this.

Thank You for your time! Ramon Brand

Answer 1

Best Answer

Answer by whydoidoit · Oct 23, 2012 at 05:01 AM

You need to use something else rather than pure static variables. You should consider using a Dictionary where the key is the loaded level name:

    static var tracks = new Dictionary.<string, trackInfo>();

    TrackInfoHolder.tracks[Application.loadedLevelName].bestLapTime = xxxx;

This Unity Gems article has a section showing information on using Lists and Dictionaries in Unity Script.

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attacker5 · Oct 23, 2012 at 06:21 AM 0

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Thanks for this, Just one thing, Im getting a error, "$$anonymous$$ Identifier: Dictionary". This seems odd.

Also, I have done some research and it seems as if dictionaries are "out of date"? Because everything is referring to hashtables. Are they the same thing, just new? Thank You

Eric5h5 · Oct 23, 2012 at 07:38 AM 0

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You have it backwards; Hashtable is generally obsolete; use Dictionary ins$$anonymous$$d. As for the error, import the System.Collections.Generic namespace.

attacker5 · Oct 23, 2012 at 11:02 AM 0

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Awesome, after some work I got it going! Very powerful tool for me, thank you both for the help! :)

How do you use a variable in a line of code?

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