Re: [Speed-dreams-devel] start from pit lane

[Max R. <per...@gm...>]

Hi Wolf-Dieter
First of all thank you for your great work for simplix driver
Please excuse me for my bad english, and if you wish we can try to talk 
over skype.

I have a goal to start a car from pit
In initcars i placed a car on pit, but after start, simplix dont use 
speed limitation on pit lane
So in runOneStep i turned on flag RM_CMD_PIT_ASKED for the cars, right 
after "Go" signal.
After that speed limitation on pit lane start to work but i spotted that 
simplix add extra fuel on this fake pit stop
I added some debugging information to understand whats going on in 
PitRefuel method
Here is the edited code (actually i just added 2 GfLogInfo calls)
=================

float TSimpleStrategy::PitRefuel()
{
float FuelConsum; // Spritverbrauch kg/m
float Fuel; // Menge in kg

if (oFuelPerM == 0.0) // Wenn kein Messwert
FuelConsum = oExpectedFuelPerM; // vorliegt, sch‰tzen
else // ansonsten
FuelConsum = oFuelPerM; // Messwert nehmen

FuelConsum *= 1.10f; // ggf. ohne Windschatten!

oRemainingDistance = // Restliche Strecke des
oRaceDistance - DistanceRaced; // Rennens ermitteln

Fuel = // Bedarf an Treibstoff
(oRemainingDistance + oReserve) * FuelConsum;// f¸r restliche Strecke

if (Fuel > oMaxFuel) // Wenn mehr als eine Tank-
{ // f¸llung benˆtigt wird
if (Fuel / 2 < oMaxFuel) // Bei zwei Tankf¸llungen
Fuel = Fuel / 2; // die H‰lfte tanken
else if (Fuel / 3 < oMaxFuel) // Bei drei Tankf¸llungen.
Fuel = Fuel / 3; // ein Drittel tanken
else if (Fuel / 4 < oMaxFuel) // Bei vier Tankf¸llungen.
Fuel = Fuel / 4; // ein Viertel tanken
else // Bei f¸nf Tankf¸llungen
Fuel = Fuel / 5; // ein F¸nftel tanken
};

GfLogInfo("Pitrefuel: we have %fl and looks like we need %fl when max is 
%fl\n", CarFuel, Fuel, oMaxFuel);


if (Fuel > oMaxFuel - CarFuel) // Menge ggf. auf freien
Fuel = oMaxFuel - CarFuel; // Tankinhalt begrenzen
else // ansonsten Bedarf
Fuel = Fuel - CarFuel; // abz¸gl. Tankinhalt

//Fuel = MIN(Fuel,10.0); // NUR ZUM TEST DES TEAMMANAGERS

oLastPitFuel = (float) MAX(Fuel,0.0); // Wenn genug da ist = 0.0

GfLogInfo("Pitrefuel: so we will add %fl (%fl)\n", oLastPitFuel, Fuel);

return oLastPitFuel; // Menge an TORCS melden
};
=================

For the start i choose 70litres (cause few amount of fuel were lost 
during working engine before "Go" command, and i just want to be sure 
that car has enough fuel for everything)
of fuel at start by setting
params/section[name = 'simplix private']/attnum[name='start fuel']/@val 
to 70
in drivers/simplix_sc//mp1-vicente/default.xml

So i got in my stderr:

00:00:00.419 Info Pitrefuel: we have 69.968796l and looks like we need 
51.436844l when max is 100.000000l
00:00:00.419 Info Pitrefuel: so we will add 30.031204l (30.031204l)
00:00:00.419 Info #Pastor Maldonado refueling: 30.03
00:00:00.419 Info Pastor Maldonado entering2 in pit slot.
00:00:00.419 Info Pastor Maldonado in repair pit stop for 5.8 s 
(refueling by 30.0 l, repairing by 0).

few comments from me:
we have 69.968796l cause ~0.023 were burned out before Go command
51.436844l is what we need to complete 25laps in practice mode (settings 
from config/raceman/practice.xml)

and we have
51.436844 > 100.000000 - 69.968796
and you calculate Fuel as
Fuel = oMaxFuel - CarFuel
i.e.
100.000000 - 69.968796
and thus oLastPitFuel = 30.03

Regards
Max

On 28/4/13 14:50 , Wolf-Dieter Beelitz wrote:
> Hello Max,
>
>
>> In our case Fuel has amount of litres that we need to finish session (51l)
> OK
>
>> CarFuel has current amount of fuel in car tank (70l
> No, because if we have 70L and need only 51L we would not use the code here!
>   
>> - this value taken from driver settings xml file) oMaxFuel is tank capacity (100l)
> It is not taken from the XML file but from the simulation
>
> In a real case CarFuel << Fuel, it depends on the number of team mates that have to use the same pit, the tracks length (distance from pit entry to pit entry + way to pit), let's assume 10 L.
>
> 51 < 100 - 10 -> Fuel = 51L - 10L
>
> Cheers
>
> Wolf-Dieter
>
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