Returns the x position of the edge of the screen that is in front the player, in absolute stage coordinates.
Format: FrontEdge
Arguments:
Return type: float
Error conditions: none
Notes:
This trigger is equivalent to the expression "ifelse(facing = 1, RightEdge, LeftEdge)".
Example:
trigger1 = facing * (Pos X + CameraPos X) < facing * (FrontEdge)
; Triggers if the player is behind the front edge of the screen.