Using "skip lab back" in scripts

[motorollin]

Here's a sample of my startup-sequence:

C:CheckKey 50
IF WARN
  skip boot
ENDIF

C:SetPatch QUIET
MakeDir RAM:AGS
Assign AGS: RAM:AGS
Assign Games: Work:Games
Copy Games:AGS/#? AGS: ALL QUIET

Lab loop
ArcadeGameSelector
IF EXISTS RAM:.run
  Execute RAM:.run
  Delete RAM:.run
EndIF

skip loop back

lab boot

;normal startup sequence stuff to load workbench goes here

Basically, if F1 is being pressed on boot it skips forward to the "boot" label and loads Workbench. Otherwise, it loads ArcardeGameSelector. This works fine. Now, when I quit the game I've been playing, it should skip back to the loop label and re-run ArcadeGameSelector. However, it just gives an error saying "object not found. skip failed returncode 10". Any ideas?

--
moto

[motorollin]

Just tried it - same error. The weird thing is that this works:

lab loop
echo "hi"
skip loop back

It prints endless lines of "hi" when executed. I can't see how this is syntactically different to what I did :-?

--
moto

[motorollin]

Ok I think it's something to do with WHDLoad, as if I comment out "execute ram:.run" then the loop works (but obviously it just goes straight back to the menu without loading the game). Weird!

--
moto

[motorollin]

It's in C:. But I don't think that's the problem - the problem is that it's not skipping back to the loop label when WHDLoad runs. Here's the solution I have come up with:

;s:startup-sequence
Run Execute S:AGS-startup
Quit

;s:AGS-startup
ArcadeGameSelector
Execute RAM:.run
Delete RAM:.run

Run Execute S:AGS-startup
Quit

Not as elegant as using labels, but it works.

--
moto

[motorollin]

It is a limitation of label + skip in conjucation of executing external scripts.

Ahh ok, so does calling an external script wipe out the labels in the script that called it?

--
moto

[motorollin]

Here's an example of  the PlayGame script I use to run WHDLoad games from my GamesLauncher Util...

Code: [Select]

CD "RAM:Action Fighter/"

Assign SAV: "SAVES:Action Fighter"

LAB LOOP
WHDLoad Slave=ActionFighter.slave PreLoad NoCache NoFilter NTSC
SKIP BACK LOOP[/B]

This works fine on all my games without any problems...

The problem is that ArcadeGameSelector creates a script which you then have to execute in order to get the game to run. As Piru says, this doesn't work with labels. Is your GamesLauncher on Aminet?

--
moto

[motorollin]

That looks good! I use ArcadeGameSelector which is very effective.

--
moto

[motorollin]

Ahh ok. My A1200 boots straight into ArcadeGameSelector unless I hold down F1 during boot, since my Amiga is only really used as a games machine

--
moto

[motorollin]

@Piru
Thanks for the explanation. Very interesting

Have any of these issues with AmigaDOS been addressed in any of the NG AmigaOS flavours?

--
moto