Re: [Wesnoth-dev] Adding arithmetic operations to WML

[Yann Dirson]

On Fri, Feb 18, 2005 at 05:22:38PM -0600, Joseph Simmons wrote:
> {VARIABLE_OP } fufills this function, i believe. It is used like this:
> 
> {VARIABLE_OP EXPY add -1}
> 
> where EXPY is the variable being added to, add is the function being 
> performed (it can also multiply, IIRC),
> and -1 is the amount being added.
> 
> they don't take any number of arguments, but IMHO they make it 
> unnecessary to add a predefined
> preprocessor macro.

Hm, maybe.  If the [set_variable] tag is valid in any context, that
could do.

It would be even better (better than a preprocessor-based solution),
if we could write something like that in the themes file:

[resolution]
        id=parent

        {VARIABLE FONT_NORMAL 14]

        [label]
                id=foo
                font_size=$FONT_NORMAL
        [/label]
[/resolution]

[partialresolution]
        id=child
        inherits=parent

        {VARIABLE FONT_NORMAL 8}

[/partialresolution]


... and subsequently get font_size=8 in the resulting child resolution.

But that would additionally depends on when $variable expansion takes
place wrt [partialresolution] expansion.

Any quick answer, or should I look at the code ?

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