Hexen: autosaves cause problems with -demoextend multi-level demos

[kitchen-ace]

In Hexen, when you go to a new level, the game creates an internal autosave. (This is vanilla behaviour.)

Chocolate supports the -demoextend parameter to record demos across multiple levels, however if you enter a new level that already has an existing autosave, you may just immediately die instead.

example: chocolate-hexen -warp 4 -demoextend -skill 4 -class 0 -record test.lmp and then move backwards to go through the portal. If you do this once (and have no prior autosaves for that level) it will work fine. If you then do it a second time (even with a different demo name), you'll die on going to the new level. Deleting all files in the chocolate-hexen save directory will let you record a demo properly once again.

Tested with the most recent git version, and a few previous versions.

[turol]

Changing this line:

chocolate-doom/src/hexen/sv_save.c

Line 2234 in 7c4f352

if (!deathmatch && ExistingFile(fileName))

To this:

if (!demorecording && !deathmatch && ExistingFile(fileName))

Makes it work for me. Can you check if this breaks anything else?

[turol]

I think that is not the correct fix. I think we should add a call to SV_InitBaseSlot somewhere in the demo recording code to remove those old saves.