Hello! Today an idea occurred to me while I was playing Kirby's Dream Land 3 for SNES, that it would be really cool if there were some way to play as Gooey (the second player character, accessible at any time by pressing the A button) but only Gooey, without Kirby. As the game stands, in order to effectively play as Gooey, there must be two players, because there is a limit to how far the second player can go from the first player before they're warped back to the center of the screen. When there is no second player, Gooey is controlled by a CPU, but there is no way for Kirby to be controlled by a CPU instead. Keep in mind I would not be satisfied by a simple sprite swap, because Gooey has a slightly different mechanism of attacking. What I'm proposing is in effect to completely switch out the mechanics of the two player characters so that Gooey controls as he normally does, but can do so all by himself.
The problem is, I don't know the first thing about rom hacking! I was wondering if there's anyone who would be willing to help me on this task, which I imagine would be a relatively simple one all things considered (although I could be completely wrong) for someone well-acquainted with this sort of thing.
Thank you for your time! I would really appreciate any help!