SRL Archive - OSR Advanced Scripting Tutorials

{$Define } although a very simple feature isn't really included in many scripts i've noticed, but although unknown it is extremely useful, for things such as SMART.

For example, instead of having to either have two scripts, one smart, one not you could simply use {$Define}

{$Define SMART}

Well, what this basically does is define the thing SMART so that if you use

{$IfDef SMART}
{.include srl/srl/misc/smart.scar}
{$EndIf}

it would include Smart as it has been defined (hence IfDef) if it were commented out however it wouldn't include smart as you wouldn't have defined it.

This also works in the main loop so you can use it there like so

{$IfDef SMART}
  SmartSetupEx(world, false, true, false);
  SetTargetDC(SmartGetDC);
  {$EndIf}

so yeah that's the end of my small tut, post questions if you have any please :)

you can also use

{$UnDef} 

which does exactly what it says it removes something you have previously defined

{$IfNDef}

which will do something if something isn't defined, in other words
the opposite of {$IfDef}

Edit:apparently ScarScript needs to be updated for this, it should be black.

You may also want to add that there is "IfNDef," "Else," "Undef," etc.

Maybe add a real example aswell?

@LordSaturn

{$Define SMART}
program new;
{$IfDef SMART}
{.include srl/srl/misc/Smart.scar}
{$EndIf}
{.include srl/srl.scar}

begin
  SetupSRL
  {$IfDef SMART}
  SmartSetupEx(103, false, true, false);
  SetTargetDC(SmartGetDC);
  {$EndIf}
end.

An example besides SMART?

Anyway, good tut.

ok then Hugo here you go ;)

{$Define I}
program new;
{.include srl/srl.scar}
var
   I : integer;

begin
  SetupSRL
  for I:=0 to 10 do
  {$IfDef I}
  WriteLn(IntToStr(I));
  {$EndIf}
end.

I still don't get exactly what it does :confused:

it allows you to do something when you define it or stop something happening when it hasn't been defined

the only thing i dont understand is how it know when you want I to be defined or not :/

you comment it out ;) like
//{$define }
rather than
{$define }

Sorry for the bump, but are you able to include during runtime?

begin
  {$IfDef SMART}
    {.include srl/srl/misc/Smart.scar}
  {$EndIf}
end.

look at SandoS' examle, it shows that you can. He did:

  begin
  SetupSRL
  {$IfDef SMART}
  SmartSetupEx(103, false, true, false);
  SetTargetDC(SmartGetDC);
  {$EndIf}
end.

That's not what I'm asking though. I was asking if you could include files during runtime. That example just shows him setting up SMART.

It doesn't include it during runtime; only when the script is compiled (notice: "compiler" directives).

oh sorry lordsaturn, I misunderstood your question. I thought you meant could you just use define during main loop.