Since a true UFO/TFTD hybrid has been the 'Holy Grail' for XCom players for quite a long time, I've decided to start a discussion topic to try to work out how it *could* work using OpenXCom. By this I simply conceptualizing the whole hybrid game and what would be required.
Before any of the developers smacks me in the head, yes, I know, it is impossible to do it at the moment, and even when TFTD is finished, due to the differences. And it most definitely would also need specific code to deal with many aspects. But for now the discussion is merely theoretical, and I promise I won't bother you with it
So, don't get all excited about this thread since a LOT would be required for a hybrid game to happen. But it could be a stepping stone of some sort for the future, so let's start with the basic:
The Storyline/PlotlineFrom what I've discussed so far, the general consensus seems to be that such a hybrid could take 2 forms:
A) Serial - after completing Cydonia an finishing UFO the game continues but now in the TFTD storyline.
B) Parallel - both UFO/TFTD take place at the same time.
Both options have pro/cons but quite honestly I would prefer option B) since there isn't much difference between A) and playing both games separately. With option B) it would also be possible to either have the hybrid on a UFO or a TFTD setting (GUI, etc.) but I would also prefer to keep it based on UFO.
The plotline would also need to be reworked. The most logical solution to me seems to be something like:
* Start with XCom base on land and for the first months make only UFO missions on land.
* Afterwards introduce USO missions. The challenge here would be that your underwater tech is the basic stuff and now you need to decide whether to focus your research on either land or sea tech.
* The research required to win could be alternated, each step completed unlocking the next one, after the required alien is captured and interrogated: Alien Origins, Alien Origins II (the appearance of the aquatic aliens questions the info learned on the previous topic), Ultimate Threat (points towards the existence of T'Leth), The Martian Solution (it is revealed that T'Leth is merely following orders from Mars), Tleth The Alien City (to destroy the alien's main base on Earth and gather intel about the location of Cydonia), and Cydonia or Bust.
* Another idea posted is to allow the player to win the game by completing either the Cydonia or T'Leth missions to win the game. And/or to have a time limit to do Cydonia before T'Leth rises.
* A possible addition is a trigger event for the aquatic aliens to appear, although this might require too much work.
* One nice thing to add would be that the T'Leth mission would be a suicidal one, since the city explodes at the end of TFTD so you'd lose both the craft and the soldiers. Who do you choose to die on that mission?
Starting from this, I'm going to start thinking about other game issues but I'll post them in separate threads below this one.