Terminator 2 / Revolution X MAME calibration issues

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purbeast:
I'm trying to get these games to work with my light gun cabinet and having some trouble.

I'm using a light gun that works as as joystick in MAME. It works fine in games like Area 51, Maximum Force, and Carnevil.

I know that T2/RX are not light gun games and are actually on like a large analog stick. I tried setting the adstick_device and positional_device to joystick in mame.ini as well, and nothing.

The weird thing is, I have the MAME cursor turned on. And when I move my gun around the screen, the MAME cursor moves around and is tracking just fine. However I still see the in-game cursor for RX sitting in the top left corner, and the bullets are just going right to it.

Anyone have any suggestions on what I can try to fix this?

purbeast:
Okay I am pretty sure after messing with the calibration in game, that the problem is my monitor has burn in on the bottom right and when I go to shoot the bottom right during calibration, it doesn't register anything. I have noticed in general the bottom right corner of my monitor has trouble registering in all games.

Is there any file I can manually modify or anything to hard set the calibration values? I am guessing not because it is down inside the service menu. Or is that something stored in NVRAM and is there a way to modify it outside of the game? Even with like a hex editor or something?

Howard_Casto:
Put that exact version of mame on your home pc, calibrate it manually with a mouse, save it and then copy the created nvram from your home pc to your cab.

purbeast:

--- Quote from: Howard_Casto on April 05, 2025, 02:07:18 am ---Put that exact version of mame on your home pc, calibrate it manually with a mouse, save it and then copy the created nvram from your home pc to your cab.

--- End quote ---

I actually ended up calibrating it similar to that but on the same PC by just enabling the mouse. I need to do it for p2 though.

Now I'm trying to add a screen flash via MAME overlays. So far I have it working where I get an overlay when trigger is pulled but I'm trying to make it flash/blink while trigger is pulled down. I'm not sure it's possible.

purbeast:
Well I figured out the screen flash. It flashes every 5th frame if you just hold the trigger down and has a white overlay of .4 opacity. It works great with my Happ guns.

If anyone is interested just let me know and I can post the artwork file. It's just one file with some XML and I had to write some LUA code as well. If you want to use it you'll have to change some values to match your resolution but that's it.

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