Recreating a race using telemetry

[GTRdrift34]

Hi i have managed to log multiple telemetry values into a file including steering, throttle, brake, velocity, position, acceleration and time. I was thinking since movie capture seems to slow down the simulator excessively that i would run a race twice- once to collect the data and the second time to feed the data back and record the replay. If this makes sense or if it is even possible which function would be able to read in the values in the telemetry log and update the car at the corresponding time? I do my logging in car.cpp under simuv2.1. Thank you.

[mungewell]

I don't believe that you would be able to recreate a race by recreating the inputs to the car, there is too much math done which would probably end up in rapid diversion from what you want - ie different car performance each time.

There was some talk of implementing replays, not sure if anyone took this on/is working on it.

You could look at the race engine, which contains a large structures for holding the position/etc of the cars. If this can be stored/retrieved somehow you may be able to replay the race.


This function might only be called when multi-threading is turned on, but it gives a good list of all the possible parameters required for defining the game state.

I had previously suggested using sqlite to do this, but there was some concerns about speed of access and adding another dependancy to the code.
Simon

[GTRdrift34]

Thanks Simon, if it helps i am simply running the simulator in practice so i can ignore mathematics for the other cars. I think the Positions i have logged Px Py and Pz from car.cpp are the position relative to the centre line in metres? Whereas what i would be after in this case is logging the global coordinates of the car in the track (currently trying to find this) and feeding this back into the simulator at given time intervals to give almost the illusion of replay. What i mean is that i would have no need for speed/steering/braking values as all i want is a series of snapshots and i think positions alone can do it.