Changes shuttle port direction var from an angle to a dir (#30167)

* Converts port_angle to port_direction

* Remove old ass comment

code/modules/shuttle/arrivals.dm

@@ -6,7 +6,7 @@
 	width = 7
 	height = 15
 	dir = WEST
-	port_angle = 180
+	port_direction = SOUTH
 
 	callTime = INFINITY
 	ignitionTime = 50

code/modules/shuttle/emergency.dm

@@ -183,7 +183,7 @@
 	width = 22
 	height = 11
 	dir = EAST
-	port_angle = -90
+	port_direction = WEST
 	roundstart_move = "emergency_away"
 	var/sound_played = 0 //If the launch sound has been sent to all players on the shuttle itself
 

code/modules/shuttle/shuttle.dm

@@ -260,7 +260,7 @@
 	// The direction the shuttle prefers to travel in
 	var/preferred_direction = NORTH
 	// And the angle from the front of the shuttle to the port
-	var/port_angle = 0 // used to be travelDir
+	var/port_direction = NORTH
 
 	var/obj/docking_port/stationary/destination
 	var/obj/docking_port/stationary/previous

code/modules/shuttle/supply.dm

@@ -30,7 +30,7 @@ GLOBAL_LIST_INIT(blacklisted_cargo_types, typecacheof(list(
 	callTime = 600
 
 	dir = WEST
-	port_angle = 90
+	port_direction = EAST
 	width = 12
 	dwidth = 5
 	height = 7