let's say I want to make a horizontal or vertical side-scrolling platform or shmup.
I was always wondering how to handle the moving background.
The background in my example moves side-ways (or vertically), and it is not a seamless repeating image. It is an image containg graphics for a looooong corridor, or a terain for my airplane to fly above, with mountains, rivers, cities.
So, how do I handle this? Do I import an image that is some thousants pixels long and make it move? Is this tactic logical? How do professionals handle this? I've been wondering about this since the gameboy era!
Can you enlighten me on this topic?