The past 2 months I been trying to build a simple horizontal shoot em up game like Gradius. Working on general mechanics and testing 2 different types scrolling. My real question is, what scrolling is more common to use in horizontal shoot em up games like Gradius.
1. Using the system scroll x and parallax layers? (where the window is moving thru the long layout)
2. Having star field and Objects scroll -x with loops. ( window doesnt move, objects fly horizontal across the screen, illusion that is moving)
Another question about option 1. Option 1 would require to have a large horizontal layout maybe having 20000 px in size. is that normal for most games to have a huge layout?
Hope this isnt hard to understand. Would really appreciate any feedback or tips.