Doomsday Engine

Which version of Doomsday are you using? (1.14.3?)

1.14.3

Note that there are numerous bugs in Hexen's ACS and it could be that the user has encountered one and now, his game state is invalid. These are issues which affect all ports supporting Hexen, not just Doomsday.

So far I have been unable to replicate the reported issue myself, in 1.14.3

I've just given the Shadow Wood hub a test in the latest unstable build by going through each sub map with noclipping and pressing all six switches.

Trying to load a save game made on Shadow Wood, after all six switches are pressed causes Dday to repeatedly hang. I also had Dday crash a few seconds after returning to Shadow Wood after all six switches had been pressed, on one occasion.

Also, I tried pressing two of the six switches, returning to Shadow Wood (to check the panels had lit up) and then heading to one of the sub maps to save the game. This time the save game loaded, however when I then went back to Shadow Wood to check the panels, I found they were no longer lit up and the game was in-completable, as the switches were still pulled on the sub maps.

This is beginning to sound like another FS2 issue...

vermil wrote:

Trying to load a save game made on Shadow Wood, after all six switches are pressed causes Dday to repeatedly hang.

Could you attach this save game here, please?

When trying to load a save game made on Shadow Wood after all six switches have been pressed on the sub maps, the alert log comes up right before Dday freezes.

Upon checking my out file, I found this:

Loading game from "/home/savegames/hexen/hex1.save"...
S_StartMusic: Starting music 'currentmap'
Loading map "MAP13"...
Current map elements:
1865 Lines
355 Sectors
2363 Vertexes
4 Polyobjs
Z_CheckHeap: invalid total size of blocks (33524320 != 33554384)
Z_CheckHeap: zone book-keeping is wrong
Application terminated due to exception:
Z_CheckHeap: zone book-keeping is wrong

There is no more in the out file after the last line.

That said, restarting Dday and then trying to load the save game, appears to lead to it being loaded without issue. It seems the freeze may only occur if the save game is loaded in the same game session it was created in. But it seems reproducible.

vermil wrote:

Z_CheckHeap: invalid total size of blocks (33524320 != 33554384)
Z_CheckHeap: zone book-keeping is wrong

One potential cause for this is an out-of-bounds write in the memory zone. Should run a few tests with "deng_fakememoryzone" and GuardMalloc...

EDIT: I couldn't locate a memory zone write error, although that doesn't rule out the possibility that there still might be one.

adamcirillo: Were you using a resource pack of some kind with the attached saves?

If you also attach your doomsday.out, that will tell us all the relevant information.

I'm also looking into this. My hunch is that the memory zone book-keeping error and the failed puzzle activation are both caused by the same issue.

Edit: Yep, they were indeed one and the same issue. (Fix committed).

danij wrote:

I'm also looking into this. My hunch is that the memory zone book-keeping error and the failed puzzle activation are both caused by the same issue.

Edit: Yep, they were indeed one and the same issue. (Fix committed).

It just happened to me yesterday, using 1.14.5. Pressed all the six switches in Shadow Wood (and double checked them all to make sure), and when I went to the door only 2 were actually lit up. Had to noclip to carry on with the game...

Then again, my game was started on an older version (can't remember if .3 or .4), so I guess the .sav file was probably already corrupted?

vittau wrote:

I guess the .sav file was probably already corrupted?

Possibly not, this may be Issue #1846 related. Lets see what happens once that is fixed.