[Not a bug/Fixed] Heretic special commands

Ichor · Post by **Ichor** » Wed Jul 23, 2003 9:27 pm

In a recent Heretic map (crypts.wad), there was a special command called W1_RaisetoShortTexture. It works fine in Heretic and JHeretic, but in ZDoom, the floor continues rising until it hits the ceiling.

Post by **Graf Zahl** » Thu Jul 24, 2003 2:35 am

That's more likely a bug in the level. I checked it and the sector has no lower textures so this is clearly undefined behavior. I remember having this discussion on Doomworld some time ago and there was some discussion about the buggy implementation of this special in Doom and Heretic. Besides, this is compatibility optioned in ZDOOM:

Code: Select all

static inline void CheckShortestTex (int texnum, fixed_t &minsize)
{
	if (texnum > 0 || (texnum == 0 && (compatflags & COMPATF_SHORTTEX)))
	{
	}
}

Ichor · Post by **Ichor** » Thu Jul 24, 2003 6:58 am

I guess I could fix it, but if it works in Heretic, why wouldn't it work in ZDoom? When I first tested it in Heretic, I had set the floor 100 units below the higher surface, and it rose up to just above the higher surface. This means that if there wasn't any texture (necessary for the illusion to work), then Heretic raises it 128 units by default. A similar code could be put into ZDoom.

Mighty Duck X-treme · Post by **Mighty Duck X-treme** » Thu Jul 24, 2003 7:08 am

Yeah, I rarely play Heretic and in my humble opinion, I honestly don't quite understand why not everything Heretic has been implemented.

It could be that each Doom/Heretic/Hexen source port is unique from one another and they have similar implementations that work differently.

Remember back at Doomworld where there was a disscusion about the possibility of a 'Super Port?' IIRC, Gamearena claims it's unwise to do so, which was why he makes Doom ports from scratch.

Post by **Graf Zahl** » Thu Jul 24, 2003 6:51 pm

Ichor wrote:I guess I could fix it, but if it works in Heretic, why wouldn't it work in ZDoom? When I first tested it in Heretic, I had set the floor 100 units below the higher surface, and it rose up to just above the higher surface. This means that if there wasn't any texture (necessary for the illusion to work), then Heretic raises it 128 units by default. A similar code could be put into ZDoom.

You are exploiting the side effect of a bug. Such things have the tendency to screw up and you have to live with that.

Besides, the code is there, you just have to set the compatibility flag 'COMPATF_SHORTTEX'. What happens in your case is the following:

Doom/Heretic never checked for the validity of the texture so they always include the height of the dummy texture #0 in their calculations. Fortunately for you it had the correct height for your situation.

HotWax · Post by **HotWax** » Fri Jul 25, 2003 12:18 am

This is precisely what the compatibility flags are meant to do. There is no need to fix what isn't broken.

Ichor · Post by **Ichor** » Fri Jul 25, 2003 6:27 pm

How do you set that flag. Do you put it in the .ini file, or do you have to type it in the console every time you play, or is it something else?

Post by **Kate** » Fri Jul 25, 2003 7:01 pm

Go to Options(in the main menu), then go to Compatibility Options and all of the Compatflags are there

Ichor · Post by **Ichor** » Sat Jul 26, 2003 10:24 am

Ok, that worked. However, I noticed something kind of strange. In the map there are 317 enemies, but in ZDoom, the total at the end of the map says 322, meaning there are five items with MF_COUNTKILL on that shouldn't have it on. I don't know which items they are though.

Post by **Graf Zahl** » Sat Jul 26, 2003 11:47 am

Ichor wrote:Ok, that worked. However, I noticed something kind of strange. In the map there are 317 enemies, but in ZDoom, the total at the end of the map says 322, meaning there are five items with MF_COUNTKILL on that shouldn't have it on. I don't know which items they are though.

The only thing I can think of are some chickens which caused a monster to be counted twice. I'm not sure however because I never played Heretic with ZDoom.

Ichor · Post by **Ichor** » Sat Jul 26, 2003 12:01 pm

That must have been it. I used the Morph Ovum in the last area, and now that you mention it, I did turn five of those enemies into chickens.

HotWax · Post by **HotWax** » Sat Jul 26, 2003 10:36 pm

That's a known issue; I assume it'll be fixed very soon.

Post by **randi** » Thu Aug 28, 2003 7:39 pm

The original bug is a compatibility option, not a bug. The second has been fixed for 2.0.48/2.1.0.