Games inside Doom

Hi there Doomworld...

I was wondering, how can "other games" be implemented inside the Doom Engine? For example:

Eternal Doom MAP33 (Cybersweeper)
ZPong
Mortal Kombat
Rat Solitaire

What kind of games can be "emulated" inside the Doom Engine? Maybe Pac-Man? Metal Slug? Is that possible? If Mortal Kombat and Donkey Kong have been done, what else is possible?

2nd EDIT: It seems that I can't speak/write English properly. I apologize.

I would suggest opening said wads up in Slade I know that Action Doom did the same thing. If I was to hazard a guess it would be that it probably loads the data from the chosen ROM. I am unsure of the complete technicals.

Edit: Dismiss this. I have an old 2D level that was to be used for pogostick which used ACS as a means to change the camera angle, and display the doomguy character within 2D. I assume that with platforming style games people use a script like that and include the ROM's graphics inside the wad.

There's even a makeshift Cannons deathmatch game in a PWAD for vanilla Hexen! Each player has a cannon and needs to set the angle and velocity to target other players.

ZDoom and Hexen have a powerful programming language inside, allowing pretty much millions of games to be made. So this question isn't very interesting if we take them into account. And even in Boom uncountable number of games is theoretically possible too since you can recreate computer logic with voodoo dolls and scrollers. Remember Zom-B's Boom Computer?

OK, I should have been more specific.

What I meant was, what kind of games can be implemented in a)vanilla (that's why I included the ED example) b)source ports.

Now, I've seen a lot of cool stuff in (G)ZDoom, and I'm sure a lot more can be done with it, but my question is, what kind of games can be crated inside it? That's why I asked about Metal Slug, for example. If Donkey Kong can be implemented, I think it's not unreasonable that MS could be done, but more importantly, where are the limits? I mean, what can the engine support? For example, if I wanted to recreate an arcade machine with, say, 20 playable games inside some room of my wad, can I do it (let's assume for a moment that I actually have the skills required)? Can I play chess/checkers/etc. inside a wad? Stuff like Pac-Man shouldn't be that difficult, but I really have no idea (otherwise I wouldn't be bothering you with my gibberish, right?). In the thread linked by Memfis, it's briefly discussed the possibility of "Doom inside Doom". I know (or I think I know) this is not possible, but what about something like Maze Wars? Or Catacomb 3D?

Now, what about other ports? I know that 3DGE or Eternity or Legacy are very powerful as well, I'm sure something can be done with them...

And this:

printz said:

There's even a makeshift Cannons deathmatch game in a PWAD for vanilla Hexen! Each player has a cannon and needs to set the angle and velocity to target other players.

I have to try that one! Do you have a link?

Memfis said:

Remember Zom-B's Boom Computer?

Man, that blew my mind the first time I saw it, but it seems that Zom-B had some trouble with it (if I'm not mistaken, it was never finished, right?). Something tells me that it can be done with something a little more advanced that Boom, but I'm just guessing.

EDIT: Forgot this one:

Springy said:

I would suggest opening said wads up in Slade

Thanks for the suggestion, but that's unlikely to help given my major lack of knowledge about wad editing (I already have problems getting around Doombuilder 2...).

Zed said:

What kind of games can be "emulated" inside the Doom Engine? Maybe Pac-Man?

There are a couple Pacman wads. Pacman Doom 2 seems to work badly for me in the current version of ZDoom / Zandronum, but I remember that once I've been able to play it.

I have enjoyed this Pacman wad more, it's simple, but loyal to the Pacman game principle, therefore fun. ;)

Haha, the first one is cool!

Unfortunately the second link is not working, can you re-upload it please?

Now, I really appreciate your answer, but I was referring to something a little different. In the case of the first link, it is a TC. A good TC, but still a TC. The thing is, if you look at, for example, ZPong (assuming it's included inside a proper wad, I mean, a "real" map), you can either:

-Go to the room where the "arcade machine" is and just play pong
-Go outside and kick some demon's ass
-A mix of both

In the case of the TC, you can't. If you want to "go kick demon's arse" you have to load another wad. That's why I was referring to games "inside" a level (now that I think about it, I should have stated my question like that in the first place...).

I apologize if this sounds rude, definitely not my intention. Thanks a lot for your reply.

Zed said:

Unfortunately the second link is not working, can you re-upload it please?

It should work, I downloaded it 20 minutes ago.

And well, this other Pacman is no TC because it uses just Doom resources, but appears like a Pacman game viewed from a "3D top-down" perspective. But it doesn't offer standard Doom gameplay either.

Just now I've remembered that Doom 2 Tower Defense had a secret map structured like Pacman (you even had seen monsters on the automap), but it's certainly not loyal to Pacman in gameplay.

For actual levels inside levels, I can't really help. I just said what I could, and obviously I don't see anything rude at all in your words - it's rather rude from me, that I answered something a bit different than what you were asking, but I don't see even that as a big concern in this particular case, as we're just linking interesting wads for fun.

wSnakes by worst, the game that almost replaced deathmatching. Hope the links still work. Plas!

Super Turbo Turkey Puncher 3

What about Automap Asteroids?

scifista42 said:

It should work, I downloaded it 20 minutes ago.

dew said:

wSnakes by worst, the game that almost replaced deathmatching. Hope the links still work. Plas!

I think I may be doing something wrong, but the links still don't work.

Platinum Shell said:

What about Automap Asteroids?

Oh, I totally forgot about that. Is there someone who has done it?

I'm surprised that nobody mentioned Cyberdreams yet. Has it already faded from collective memory?

Sure, it does not rely on arbitrarily-programmable scripting subsystems, not even Boom voodoo-doll logic, but it does effectively implement a different game within Doom itself -a kind of "metagame", where you're forced to play within a familiar engine, yes, but with different goals and tactics than usual. And it's 100% vanilla compatible, so it's entirely within the "Doom engine", and not some arbitrarily complex extension of it.

similar to doomero's DKC thing, I spent a bit of time trying to get a Megaman X-ish mod working based on Pogostick. definitely possible, just requires more ACS knowledge than what I have

I just remembered of that Street Fighter game in Doom someone was working on which I don't remember whom, it was on a thread here at some time, since trying ZSTTP3 I now know how it's done.

Maes said:

I'm surprised that nobody mentioned Cyberdreams yet. Has it already faded from collective memory?

I play it every day.

Urban Brawl had an entire casino with functioning roulette tables and working slot machines.

Zed said:

Hi there Doomworld...

I was wondering, how can "other games" be implemented inside the Doom Engine? For example:

What kind of games can be "emulated" inside the Doom Engine? Maybe Pac-Man?

My mod DeiMWolf emulates Wolfenstein 3D, albeit with intentional changes.

At one time I was working on a mod called Pac-DooM, which created a First person version of Pac-Man. Pac-DooM is currently an inactive project, but can be pulled out of mothballs at pretty much any time if there is an interest in it.

Not sure if its what you mean, but Iremember back in 2011 a couple of wads named turbo.wad and turbo2.wad that had "mini games".in it, but they all ended with Doom Marine falling/dying. Poor doomguy.