destroying obstacle actors after main actor passed it

EpicoreGames

as the tittle says , how can i let my obstacle objects being destroyed after my main character passed it?

Lovejoy

@GameSecret said:
as the tittle says , how can i let my obstacle objects being destroyed after my main character passed it?

Constrain a real attribute to your player's position, and on your obstacles make a rule when self.position is < game.playerposition then destroy actor.