SCUMM: Zak (FM-Towns) Counter door remains in closed status even though the Caponian just opened it

[dwatteau]

This is with ScummVM 2.6.0git and the English FM-Towns version of Zak McKracken sold by GOG.

If you:

1. start a new game
2. grab your CashCard under the desk, grab your phone bill in the dresser drawer
3. exit your apartment and go to The Phone Company next to it
4. read the number that's on the pay phone (note it somewhere)
5. give your phone bill to the Caponian
6. go back to your apartment, use your phone and call the phone number above. Wait for the Caponian to pick up his phone.
7. go back to The Phone Company (making sure that Zak doesn't hang up the phone)
8. try to go past the counter door while the Caponian is busy on the phone

then Zak will say "I can't reach it". You can see that it's open (the Caponian opened the counter door when he went to the phone), but you do need to open it again yourself.

Savegame at step 6 is attached below (so that you can study all the necessary variables just before they change). Phone number is 5844 in that one.

Expected behavior: if the counter door is visibly open, one shouldn't need to open it again :)

I suspect a script bug in this version, something like the Caponian not properly modifying the state of this object when he goes to the phone. I don't have this bug in the V2/DOS version.

[dwatteau]

Step 6 of the procedure above (phone number is 5844)

[dwatteau]

Zak being stuck by the counter door although the Caponian opened it

[dwatteau]

Interestingly, I asked someone having an original FM-Towns CD to play it with UNZ (I only bought the GOG version, which only provides the .LFL files) and within UNZ the counter door doesn't need to be opened twice.

[athrxx]

I can confirm this for ScummVM (bugs is present) and the original interpreter/UNZ (bug is not present).

I do have some ideas about where this originates. When I tried to improve the walking code I noticed some minor code differences between ZAK FM-Towns and the other Scumm 3 games (the reason might be that the other games are "real" Scumm 3 games while ZAK is originally v1/2). I didn't pay much attention to it back then, but I'll check again if this is the issue here...

[athrxx]

I have made a fix. Please test if it works as it should...

[dwatteau]

@athrxx: Thank you very much. I confirm that commit b63bc6bfd6fde49bbbde08841adabee71c7d87f9 does fix this!