I hope someone can do this... It is ABS script, like blizzard's or Mr. Mo's. But when batte start, some kind of (maybe) invisible area appears , and you canä't go out of there until you run away or kill opponent. And there should be also battle music. Ask if you don't understand.
PLUS, if you have played Granstream Saga game, you know what I mean. It is like it's battle!