EDIT: "Is it possible to make square tiles on X-tra editor if not is there a better editor or what should i do"
WTF ARE YOU ASKING THIS FOR?!
It's called Starforge you freak!
"and that could be one"
"SING STARCRAFT TILES is a STARFORGE BUG!?!?!?"
Ahh, too bad I got here so late, do you know how bad I wanted to be the person to yell at him for thinking it's a bug?
Anyways, unless you use a tile boundary, the only thing I can think of is using hyper triggers to move any unit that passes on a thin line back.
Well, thin line segments so it doesn't teleport everything to the middle?? of the line...
Unless of course you make some system that tracks where you cross without requiring so many locations.
But, there may be a reeeaaaly wide/tall unit you can't walk past that you can place using SF... (think of Unit 2008, it looks like a Zergling, is invincible, has shields, and can be hit really far away diagnolly)