Ammo box floating in the air in Doom II

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Finbar
Posts: 2
Joined: Sun Jan 14, 2018 7:53 am

Ammo box floating in the air in Doom II

Post by Finbar »

I've just encountered a graphics glitch in Doom II. I was using GZDoom 3.2.5 and the original Doom II IWAD (from the Steam version). In MAP18 (Courtyard) there was an ammo box floating high up in the air.

I'll attach three screenshots: two from GZDoom with the problem and the location on the map, and one from vanilla Doom II in DOSbox (with the same IWAD) in the same location, where the ammo box is sitting on the ground.
Attachments
Vanilla Doom II in DOSbox: same view
Vanilla Doom II in DOSbox: same view
doom2_000.png (21.54 KiB) Viewed 207 times
GZDoom: map location
GZDoom: map location
GZDoom: ammo box in mid-air
GZDoom: ammo box in mid-air
_mental_
 
 
Posts: 3812
Joined: Sun Aug 07, 2011 4:32 am

Re: Ammo box floating in the air in Doom II

Post by _mental_ »

After entering MAP18 ammo box is placed on the ground.
When player hits the switch from screenshot below (its line number is 736) teleporter platform will be lowered for 3 seconds.
The platform will "take" ammo box with it after that.
slade_map18.png
If you will perform the same steps in Chocolate Doom you will end up with the same "bug".
choco_map18.jpg
In GZDoom this can be fixed by extending existing compatibility entry with position adjustment for ammo box (and probably cells).
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