FOSS gamedev and creative worlds

Can someone PLZ!!!!!give me a mod script that makes an item follow, and a script for 3d models, im making a pokemon mod(even though i dont like pokemon anymore,It was a childhood thing ^-^')Or maybe a script that makes an item disappear and reappear when the item is thrown on the ground?and a script that makes a creture fight in object when i type /hit or something?

Following: Domobs and slimes are coded to follow you:
http://minetest.net/forum/viewtopic.php?id=2657
http://minetest.net/forum/viewtopic.php?id=2979

Not dis/re-appearing when thrown on the ground but maybe uselfull on-off blocks: Mesecons:
http://minetest.net/forum/viewtopic.php?id=628

And for throwing and letting appear something: Deploy nodes:
http://minetest.net/forum/viewtopic.php?id=3192

Fight and hit (and follow) The wolf from the animal mod perhaps:
http://minetest.net/forum/viewtopic.php?id=3111

I think it will be difficult to make a mod like that, but if it works it would be lots of fun, so good luck!

thanks, bro!