GP2 Physics Editor 0.2 by rremedio
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This is the first released version of the physics editor.

Please notice that it isn't a regular physics editor. In editors for other games you put the data about the car, adjust some factor and the the car will behave as the game makes it behave. In our editor you will keep in the "adjust some factors" part. As there are not a good amount of information about physics for GP2, you will have to adjust the factor available until the car behaves as you wish.

I've included a BTCC.g2p file in the package. It is supposed to simulate behavior for touring cars. To try it take one of the fantastic Greyhead's touring carsets (I've used BTCC 2008) and adjust the car powers by subtracting 275 from the power of all cars. It's a quick and dirty attempt, but it shows a little of the editor possibilities.

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Instalation
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Just extract the files to any folder you want and run the .exe.
 
PLEASE BACKUP YOU GP2.EXE BEFORE USING THIS PROGRAM.

The file "original.g2p" contains the original gp2 physics (you may load them in the editor).

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Settings
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Rev Limiter: The real maximum RPM for the engine.

Max RPM: The nominal maximum RPM for the engine. The engine will rev higher if the gear ratio is not high enough.

Power Factor: Affects the power of the engine, changing the top speeds.

Differential Final Ratios: Adjust the gear ratios. I've had problems on my tests when I've changed it in low power cars. It worked beautifully for the player, but it made te ccs useless...

Upshift Penalty: When you shift up your gears you lose speed. This factor adjust how much speed you lose. Too high values have a braking effect.

RPM Lights: Adjust the cockpit lights when you change Max RPM.

Downforce: The aerodinamical efficiency of the car.

Braking Force: The braking efficiency of the car.

Polar Moment of Inertia: quote from Aubrey Windle's GP2 Physics Editor v1.0 gp2form.txt (I can find a better description):
	-"POLAR MOMENT OF INERTIA" those of you who got a 'C' in college
	 physics should have a vague idea of what this means.  Basically
	 it's how badly the car wants to keep turning or going straight.
	 A car with a lot of weight at the front and/or rear (like a
	 dumbell) will have a large pmi.  Such a car will not go into
	 a spin easily, but will be more likely to keep spinning once it
	 starts.  A car with a small pmi will be less stable, but more
	 nimble, quicker through a slalom or chicane.  A touring car,
	 for example, will have a significantly larger pmi than an F1 car.
	 AFFECTS ONLY THE HUMAN CAR!

Power Curve: It may be the power in a given RPM, but I'm not sure. In GP4 they use it to calculate the torque curve. Thinking in a gap of more or less 435rpm between each value gives good results for me. But I'm not really sure.

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Bugs:
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I didn't find any bugs so far, but I'm not a programmer. The editor may have lots of bugs. Please tell me if you find any, so I can fix it. The editor was tested only in GP2 US version.

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Disclaimer:
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The author is not responsible of any loss incurred on 
your PC...the usual stuff!
It works good on my GP2

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Contact:
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rremedio
rrtracks@yahoo.com.br
You may find me at the GP2 Forum (http://www.grandprix2.de/forum)

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This program is a freeware!
