This is a template that I make for you to understand the basics of OpenBOR.
It is extremely simple: it has a stage [static, not moving], 1 player, 1 enemy [repeated 3 times] and the menu screens.
On this mod you can learn modifying each of the sprites and values.
Try to learn on a mod finalized is terribly complex. Especially if used scripts.
I hope you can find useful my contribution: