[Scummvm-devel] Skim, V6 and arrays

[David Given]

On Saturday 24 April 2004 14:11, Max Horn wrote:
[...]
> There is no such thing as a "handle" which is returned; rather, the
> bytecode can "dim" (=create) a new array with a given size; this array
> is then reference to via an array number (which is passed to "dim" by
> the bytecode). In particular, it's up the script to make sure it uses
> an array id which is not already in use; any existing array with that
> ID will be deleted.

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.

[...]
> Where a word is 32bit in SCUMM V8, and 16bit for the other versions.

We support v8? Does CoMI run yet?

...

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 started this with 
the Reference Guide but there's no way I'll be able to complete it... it's 
just so much *cleaner* to have a specification available to refer to. 
Particularly if you've got multiple implementations of the same thing..

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