[Scummvm-devel] Skim, V6 and arrays

[M. Uli Kusterer]

At 10:50 Uhr +0100 26.04.2004, David Given wrote:
>Hang on --- I think you're confusing v5 and v6! In v6, AFAIAA, dim returns you
>the resource number (i.e. handle) of a *new* array. So it'll never destroy an
>existing one; the VM dynamically allocates new ones. In v5, the equivalent
>opcode will let you reinitialise an *existing* array. It's up to the script
>to manage which arrays go where.

  Yeah, looks like there are some opcodes which take a resource handle 
and nuke it before use, but dim only nukes an array if you specify 
the undim selector.

>  > Where a word is 32bit in SCUMM V8, and 16bit for the other versions.
>
>We support v8? Does CoMI run yet?

  Yes, CoMI runs. I bought it a while ago at a sale and tried it. A 
few issues with Wally's head popping up in the wrong spot were the 
only problems I had back then.

>I wish I had more time; it's all very well saying that the primary reference
>to the SCUMM file format is the source code, but it would be really, really
>nice to have a definitive reference for the whole thing.

  I would settle for gives/takes comments in the source code. That 
would already make my work a lot easier, and since it's close to the 
actual sources, the chance of it becoming out of date would be much 
less. I'm aware that most of you guys would much rather implement a 
feature than go over the old code and comment it, but if any of you 
who add any functions from now on could add gives/takes comments 
before them, and a basic description what it does, that would be 
really helpful. Maybe someone could tell me what I'd have to do (on 
my Mac) to be able to add such comments to ScummVM's sources for the 
opcodes? I'm a little rusty in my CVS skills.
-- 
Cheers,
M. Uli Kusterer
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