Yep, absolutely. A lot of game code has really big files. Although not exactly the gold standard for code style, the Source Engine does have a significant level of even though almost every file is 1k+ SLOC.

Here's the base Source Engine movement code for example: https://github.com/VSES/SourceEngine2007/blob/master/src_mai...

I mean, stuff like this isn't really defensible:

    switch (index)
    {    
        case 0: return sound0;
        case 1: return sound1;
        case 2: return sound2;
        case 3: return sound3;
        case 4: return sound4;
    }

Look perfectly readable and easy to understand.

only because there's no `default` case.

You could argue that having `sound` as an array, and index into that array is better, but once again, what does "better" mean here?

this code works as is, you will not get an array index out of bounds error. If this is quick and easy to write, what else could you ask for?