Make an object follow another object?

I'm making a side scroller and I want an enemy to follow a path and if they get on the same x-axis as the player, they lose. Is that possible? Let me know, thanks.

You might need to be little more specific as to what you are trying to do. Do you have an example?

I can't think of an example off the top of my head. But basically what I'm trying to do is have an enemy that chases the player through the level. It doesn't have to be anything specific, it's for a school project so as long as it works...

OK, is it like a top down, 8way movement type of game, or side view platformer type?

Side view platformer

use path behaviour