Re: I thought that the Positional gun is just like track ball with x and y axis?

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: : : No. The opti-pac is for optical devices like trackballs and spinners. : : I thought that the Positional Gun is just like a track ball with x and y axis? : no, a positional gun is just a 2 axis joystick. : One axis to move it up an down, other axis to twist it left and right. : That is why if you started opwolf in mame the calibration screen comes up. it needs to know when the gun is pointing center AND then where the edges fo the screen are relative to that. : it would be possible to do with an optical device though. But it'd have to have a optical wheel with ALOT of grooves. OR you;d have to make a nifty little driver for mame to count how many times it rotated (relative from center). That method would be much more difficult.

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