So I had an idea for a mod that I think is neat. Multiplayer in single player worlds!
Basically, the mod will add mobs that act like players. For example, you could find a Steve with no armor living in a dirt shack, or a full-diamond person running around near bedrock level. I'll stick some AI differences between the two here.
Steve: A tiny dirt shack, maybe with a crafting table or a bed, but not much else.
Diamondman: A big house filled with anything anyone could need, but also possibly a few traps and guards?
Also, some abandoned player-made houses can spawn, containing some chests and furnaces or something.
-Attitude toward mobs-
Steve: Usually runs away from all hostile mobs, unless he's feeling brave and decides to go for a kill, which usually doesn't end well. If he sees wolves, he will probably punch them, then start running away.
Diamondman: Either completely ignores hostile mobs or completely mows them down with his mighty diamond set.
-Attitude toward player-
Steve: Random. Upon seeing you, he could start punching the crap out of you, or start rapid-shifting and walk away, or just turn heel and run.
Diamondman: Almost always hostile. Occasionally, he could drop some items for you and walk away, but that's rare.
Steve: His home or running around wildly.
Diamondman: Pretty much anywhere, but usually found in deep mines or his home.
Steve: Some wood, dirt, and raw meat/apples, but not much else.
Diamondman: His armor and weapons, along with maybe some rare stuff like emeralds.
There should also be a few different AIs between these two, all with their own levels of intelligence and habits.
I realize this could be difficult to make, but this AI habits are just examples. Really, I just want a mod where I can find mobs with random player skins and old player-made houses in my world.