Crash in v0.81 & Dark Reign

[tavvva]

Hello. Any chance to troubleshoot crash I'm experiencing in the Dark Reign dungeon with v0.81?
The section "Play with fire, but be careful" is causing the game to crash after sending a fireball to the teleport.
100% reproducibility - it prevents future progress.

[Sophia]

I'll need some more information to be able to troubleshoot anything. What is the error message?

[Saumun]

It’s so long since I’ve made any DM content, that I can’t remember where that part is and I doubt I’d be able to do anything anyway.
All I can say is that it was built on a version around the mid sixties mark, probably v0.65 or 0.66, and that it definitely works on them.

[tavvva]

the log says

PROGRAM CRASH!
Location: 7 10 11
Reason: Segmentation Fault
Stack Dump:
DSBmain
DSBgameloop
run_timers
deliver_msg

[tavvva]

However ... today I'm unable to even start the engine. It says "Overlays not supported" and I don't know why. The string is present in alleg42.dll.

[Sophia]

DSB uses DirectDraw for rendering. Unfortunately, all these years later, that is just ancient (it wasn't exactly state of the art even in 2007, but still widely used at that point) and modern graphics drivers can struggle with it.

Here are some things you can try:
Make sure your desktop color depth is 32 bits
Try disabling TripleBuffer in dsb.ini (TripleBuffer = 0)
Run DSB in Windows XP compatibility mode

If none of this works, then I don't know. It has something to do with your graphics drivers.

Unfortunately, I can't really help with the crash either, because that error message could be caused by just about anything. Presumably something changed between 0.65/0.66 and 0.81 that now causes a problem for this specific dungeon, but without any more specific leads I'm not going to try to chase that down.

[tavvva]

Well ... I could share the save files so that you could try to reproduce the issue locally. Does it look doable?

[Sophia]

I can't promise I'll be able to offer a fix but if you want to send me anything (PM it if you prefer) I'll take a look.

(Also, I just released DSB 0.82, I don't see any reason why it wouldn't still be broken in 0.82, but please make sure that it is)