Can @Require be optional?

[Bugala]

Is there any way to do something like:

Code: Select all

If A=1
@Require "plugin"
EndIf

For I tried that one, but even I set A into something else than 1, it still said "this program requires Plugin"

[Flinx]

@REQUIRE is a preprocessor command. It does not exist during normal program execution; rather, it triggers an action by the preprocessor that takes place before the program actually starts. During normal program execution, preprocessor directives have no direct effect, so you can place them anywhere in the code. When the preprocessor executes this command, the variable A doesn't even exist yet.

[plouf]

and why to do it, anyway? whats the purpose behind this ?

if target is to NOT fail loading if user does NOT have it, you either include (link=true) or use @OPTIONAL instead so script not fails

if the target is to create multitarget apps , e.g. an app with jpeg support and an app with PNG support
you must use @IF (preprocessor if) to exclude loading plugin
i.e. preprocessor @IF CAN do it ..in preprocessor time..

[Bugala]

Thanks for the "link" command. I forgot you can do that, since I was already wondering if user needs to have the hwp, but with link it comes part of exe. This should solve the problem.

Although, depends how RebelSDL works.

For point is, it mentions that when using RebelSDL, drawing circles might become slower, which could be making difference in this case.

It also mentions in instructions that just @REQUIRE RebelSDL and it will basically be working, although it still mentions having to use Hardware doublebuffer and Hardware brushes.

So point here is that in case someone doesnt want to use RebelSDL, due to circles being drawn slower, then is it possible to have it on/off.

As in, if I use @REQUIRE rebelSDL, will drawing commands then automatically go through RebelSDL in way of using the slower Circle, or will it only use those slower/faster drawing methods, if I first turn Hardware DoubleBuffer on?

As in, if I @REQUIRE RebelSDL and then never use Hardware doublebuffer nor brushes, will it then work just like RebelSDL wasnt @required in the first place?

Or will it already @REQUIRE wrap the Circle command and Cirlce command become slower, regardless if I use Hardware DoubleBuffer and brushes or not.

[plouf]

yes as i recall, plugins like rebelsdl , take over , fully replace graphics layer with their own

so RebelSDL / Rapagui etc can NOT be "optional"