Refactors roundstart checks slightly

code/game/gamemodes/objective.dm

@@ -654,7 +654,7 @@ GLOBAL_LIST_EMPTY(possible_items_special)
 			for(var/mob/dead/new_player/P in GLOB.player_list)
 				if(P.client && P.ready && P.mind!=owner)
 					n_p ++
-		else if (SSticker.current_state == GAME_STATE_PLAYING)
+		else if (SSticker.IsRoundInProgress())
 			for(var/mob/living/carbon/human/P in GLOB.player_list)
 				if(P.client && !(P.mind in SSticker.mode.changelings) && P.mind!=owner)
 					n_p ++

code/game/turfs/turf.dm

@@ -397,7 +397,7 @@
 
 
 /turf/proc/add_blueprints_preround(atom/movable/AM)
-	if(!SSticker || SSticker.current_state != GAME_STATE_PLAYING)
+	if(!SSticker.HasRoundStarted())
 		add_blueprints(AM)
 
 /turf/proc/empty(turf_type=/turf/open/space)