Personally, I dont use any software which includes AI. Thats my position about AI. I also dropped my 15+ years career in IT because of all this "vibe coding" kids who just ctrl c ctrl v from chat gpt without any idea what this code do and generall shift towards AI development or aggressive policies to use AI in workflow. With all this "AI this, AI that" we are just degrading as a mankind.
I understand your stand towards AI, especially if you work in the IT field, or that of anyone who is against it. I m not trying to sell it to you. It's a bit more complex than just putting prompts in a chat box, but if you've experience things like chat gpt or grok (which i've never tried) i think i can understand your previous comment.
As for prompting an AI for the scenario and story, idk, i don' feel like it could maintain coherence or consistency and get the plot from the source material, so i wouldn't rely on it.
And for getting it to code the mod for rpgmaker, i don't know if it's possible, as you don't code inthe engine, rather you use pre existing functions (so yeah, pre made bunch of code) that affect objects on a map you've created.
Coding is not use directly except for plugins, which brings functions that aren't existing in the engine, so rather than modding the game, it's more like modding the engine. Anyone can use rpgmaker without a slight knowlegde of coding.
I'll join screecaps if that can help anyone visualize what i mean.
ShinnIkari to answer your question i use stable diffusion via comfyui, plenty of tutorials on how to get it and use it on the web.