Dude, if you REALLY must use this really slow technique for your gfx. I suggest you never use CLS and only plot pixels in parts of the screen where there are tanks or movement underneath, then you're never drawing the entire screen each frame. That'd be faster, but still not really that fast and also you'd need some pretty good algorithms and lists to sort out your drawing routines.
I think though there's a far better way to do what you're trying to do. Not just in max, but in any language.
I think though there's a far better way to do what you're trying to do. Not just in max, but in any language.