My point is that you dont even need a proper “trajectory” per se, I’m at work now so cant explain in detail but will try to come up with something tonight 
[QUOTE=Shinigami;348109]hey let me ask you, for video games like this which are 3D, is the programing itself a 3D space with coordinates? im sorry if i wasnt clear. for example, in programming, if my character is in x: 3.45443, y: 5.4333235, z: 7.89753, and i move the joystick forward, does he move to x: 5.45443 (3.45443+2), y: 5.4333235, z: 7.89753
i hope that explained my question better. reason i ask is because if this is the method used, it really shouldnt be to hard to determine projectile trajectory, speed, damage, slope etc. only problem would be the “random” bullet spread.
Again, im just trying to understand video game programing.[/QUOTE]
This I wont know, I work in statistical modeling, not in videogames coding, but the coders out there will answer you fo sho.
Peace