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Question by CC Inc · Apr 03, 2012 at 02:01 AM · javascriptvariablei

Variable i

Hi,

I am using this script for particle simulation

 for (i = 0; i < 10; i++) {
 
     particleEmitter.Simulate(1.0);
 
 }

Now, in unity, I get

BCE0005: Unknown identifier: 'i'.

I know this should be obvious, but do I have to define i?

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Answer by Eric5h5 · Apr 03, 2012 at 02:17 AM

 for (var i = 0; i < 10; i++) {
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avatar image AlucardJay · Apr 03, 2012 at 02:48 AM 0
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just be aware if you use this twice in the same GameLoop/frame, another error shall occur. (declaring a var that is already declared).

Personally I declare all my for_loop vars at the start :

 private var i : int = 0;
 

if you add this at the start then your script shall work.

avatar image by0log1c · Apr 03, 2012 at 03:03 AM 1
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You should declare your loop variable locally and not in the class. Not only does it reduces cluttering but I think its slightly faster. $$anonymous$$y two cents :)

avatar image Eric5h5 · Apr 03, 2012 at 03:10 AM 0
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Right, don't declare variables outside functions unless necessary. If you really need to, you can use #pragma implicit in order to do "for (i = 0..." without having to declare variables explicitly using var, but that's generally not recommended (it's there for compatibility with old code). At least do

 var i : int;
 for (i = 0...

inside functions, rather than making "i" a class variable, which is poor practice.

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