REFITTING THE FLIGHT MODEL?
(8 votes, average 3.88 out of 5)
Written by DOC   
Tuesday, 17 November 2009 13:42
Madrebel in the Hangar referred to an original essay written by former staffer Hoof on WWIIOL's Flight model and asks about the following section:

"Due to a number of reasons, the WW2OL flight model had a very expensive (in CPU time) derivatives calculation routine. In English, the forces and torques calculation is very expensive (especially when a vehicle has 30+ components). We achieved a rate of 50 cycles per second for the flight model loop for the target computer of the time, meaning that the maximum timesteps the flight model could use using a 4th order Runge Kutta integrator would be 12.5."

Madrebels question:

"Given that the above is referencing computers of the time circa 2001 would there be any benefit to 'refitting' the flight model for computers (cpus) of the time circa 2009? further, if the flight model was allowed to use more of a modern CPU's time would this translate into a more accurate flight model or is changing the frequency of these forces and torques calculations not beneficial without additional retooling, new coding, or tweaking of the flight model?  I suppose what i'm asking specifically is, would more frequent calculations help dampen the yaw axis 'slop' and odd stall behaviors many planes exhibit in ww2ol?"

DOC: That would depend on some rather heavy (read: extensive) rewriting of the core game engine and its impact would affect pretty much everything in the game. No one is saying it won’t ever happen but I don’t think it can be expected anytime soon. Obviously the need to optimize timesteps to take advantage of  more advanced computing power available today, over when the original game engine was created remains something to look forward to. It might entail recreating the entire game engine or employing an entirely new and different existing one or at least so many major parts of it that you’re left with an entirely new game engine being the more practical approach.  It would be pretty clear that such an undertaking is in itself a major project entailing a far more extensive plan and ground level resource work than merely “updating the game” would deem feasible.
 

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Comments (3)
1 Tuesday, 17 November 2009 13:58
CJWilson
Oh the Hor-ror! :(
2 Tuesday, 17 November 2009 16:16
madrebel
was hoping adjusting the interval would be a 'quick hit' thing. bummer, thanks for the reply.
3 Wednesday, 18 November 2009 00:17
dakotasv
so i take it this means its not going to get updated "soon" and that flight models will still have the yaw issues,im sure i know what Madrebel means