legality of porting ET to another engine


(eldee) #1

Hi, i’m a huge fan of ET- i’m in 2 competing clans on several different leagues and ladders. Having logged as many hours as i have in ET, i’ve noticed many shortcomings that the Q3 engine is responsible for… so one day i sat down and thought to myself - why not port it over to another engine?

i know that even though a mod is free doesnt make certain aspects of it legal… but still, this is a free game with open source, so i dont know what the different aspects of the issue are in this situation…

I’ve already started coding quite a bit of it, and it’s shaping up nicely; but before i start making it “ET”, i want to know if it’s legal. if not, i’ll call it something else and make new maps and stuff.

anyway. thanks for any replies


(MadJack) #2

In all aspects of it: Illegal


(Magik) #3

Although the game is free and we got the source it is not “Open Source”. Take a look at the license shiping with the source and you’ll see.


(ikanatto) #4

I have a similar question:
Is it illegal to use new( doubtful now ) codes, which I might write with refering to the ET source codes, on other engine? It means that the new codes has a similar algorithm to manage a ‘ET-like’ game but another things, such as renderings or server-client communications which depend on a type of based engine, are nothing but different styles from ET source.

Yes, I know that is ‘stealing’ of the codes and bad manners, but I can not understand whether it is illegal or not.


(SCDS_reyalP) #5

You could most likely make a game inspired by ET gameplay, as long as you didn’t use any of the actual ET assets. As an example, look at all the counterstrike inspired mods for various games.

ET is protected by two things:

  • Copyright. This prevents you from making direct or derived copies of any part of ET. The exact definition of what is derived is a complex topic, but in general if significant, non-trivial portions are regcognizable as being copied, you will be in trouble. some people have a broader interpretation of this than others.
  • Trademarks. The “wolfenstein” name and most likely some of the symbols and images are trademarks owned by id or activision.

I am not a lawyer. This is not legal advice.

Honestly, if you were going to write an ET-like game for a different engine, I would suggest starting from scratch. The ET gamecode is a horrible mess, and what structure it has is largely dictated by the engine.


(eldee) #6

okay, perhaps i used the wrong word when i said “port”.
since, i would be re-writing the game from scratch. all models, textures, maps, and other assets would be re-created from scratch as well. even the name of the game would be changed. right now my mod has support for the standard ET classes, they aren’ t using any ET weapons yet, as i havent coded that yet. but objective based maps are implemented, etc.
basically all i have to do is start creating assets and tie up some loose ends. but i’m not going to go through all the trouble if SD is gonna smack me down after i release it.


(eldee) #7

i guess it’s also important to mention that i DO intend to use specific “ideas” from ET. to be bluntly, i would recreate all ET maps, goldrush, battery, fueldump, etc in the conversion. but like i said, all assets would be unique… no hackjob file conversions would be done (and the result would be obvious with higher poly counts and higher resolution textures). So really, i guess the only questionable legal issue is whether or not i can recreate the 6 original ET maps for my mod.


(=DaRk=CrAzY-NuTTeR) #8

so basicly your making a game? but u have ti remeber that the Q3 engine has bugs but is a bloody powerful thing


(SCDS_reyalP) #9

It depends how close your ‘re-creation’ is. If it is not distinguishable from a copy or conversion, then you are certainly open to trouble. Law is based on human judgement, not hard rules like coding. Note that being heigher resolution doesn’t save you. It is easy to scale textures up or further tesselate models. Even if you looked at an ET texture, and painted your new one by hand such that it looked like the original, it could still be a copy or a derived work in the eyes of the law.

That said, this sounds like a truely horrible waste of time. Remember, ET represents several person-years of work, and they had the advantage of having all the RTCW stuff available to them. While having layout and design work already done will save you some time, I would still be completely shocked if you did it in less than a year of full time work.

There are a lot of assets in ET. If you think you can create the equivelent of all ETs textures, sounds and models from scratch, with comperable detail, in less than a year of work, you either have no clue of the time required for this sort of thing, or you are a superman. That or your idea of ‘creating’ invovles ripping off the existing stuff and trying to disguise the fact. And that doesn’t even include the code, or re-creating the maps with some other toolset. You are talking about the same amount of work as a brand new total conversion, minus a little bit of game balance testing and map design.

And for what ? Something that is very much like ET already is, but on a different engine… If you really have that much skill, time and energy to put into creating a mod, I suggest you create something new. You could still use the basic class concepts, weapon balance ideas and so on, but you would end up with something new, and no threat of legal action.


(MadJack) #10

I’ll concur with SCDS.

I was about to point out the fact that if your mod/game, is so resembling ET that it might be mistaken for it, you will get into troubles in all likeliness. Recreating the maps could even further that confusion. Anyway, I’m not a layer but I remember seeing posts similar to this in different forums about Q3 in its heydays and ID people warned those pretty harshly. If you really want to go on with that idea I would strongly suggest you contact Activision. I think that would be the best way to protect yourself. There’s nothing worse than working on something for a long period of time to realize we did it for naught…

:slight_smile: