Partially ports the GLOB system

code/_helpers/game.dm

@@ -543,7 +543,7 @@ datum/projectile_data
 /proc/getOPressureDifferential(var/turf/loc)
 	var/minp=16777216;
 	var/maxp=0;
-	for(var/dir in cardinal)
+	for(var/dir in GLOB.cardinal)
 		var/turf/simulated/T=get_turf(get_step(loc,dir))
 		var/cp=0
 		if(T && istype(T) && T.zone)
@@ -564,7 +564,7 @@ datum/projectile_data
 
 /proc/getCardinalAirInfo(var/turf/loc, var/list/stats=list("temperature"))
 	var/list/temps = new/list(4)
-	for(var/dir in cardinal)
+	for(var/dir in GLOB.cardinal)
 		var/direction
 		switch(dir)
 			if(NORTH)

code/_helpers/time.dm

@@ -135,6 +135,6 @@ var/round_start_time = 0
 		. += CEILING(i*DELTA_CALC, 1)
 		sleep(i*world.tick_lag*DELTA_CALC)
 		i *= 2
-	while (TICK_USAGE > min(TICK_LIMIT_TO_RUN, Master.current_ticklimit))
+	while (TICK_USAGE > min(TICK_LIMIT_TO_RUN, GLOB.CURRENT_TICKLIMIT))
 
 #undef DELTA_CALC

code/_helpers/unsorted.dm

@@ -1427,3 +1427,6 @@ var/mob/dview/dview_mob = new
 			return "Northwest"
 		if(337.5)
 			return "North-Northwest"
+
+/proc/pass()
+	return