Another idea would be to get a transparent piece of paper the same size as the monitor. You can draw the tick marks on that and then just tape it over the screen when you're playing artillery. When you're done, take it off. No permanent marks on the monitor and no need to try and find some kind of overlay software.
I doubt you guys will know of anything, or if anything like this exists, but I figured I'd throw the question out there. Thanks in advance for anyone that tries to help.
Basically there's a game that I play, similar to worms if any of you have played that in the past. It's basically a game that has to do with angles, wind, and determining how much power to put into a shot to make your attack go from point A to point B.
I've developed formulas to get the shot to where I want it to go, but I have a problem getting exact measurements ingame in the small time frame I have.
So I figure I have two options. The first option, is I use a marker and draw little ticks on my monitor where the map is so I have a permanent reference when I'm gauging my shots. My second option is to find some piece of software graph paper that's semi-transparent or something, so I can make ticks on it and not have it so that it covers my map making it entirely blocked by the paper itself.
If anyone would know of something like this that I could use, I would really appreciate it.