You can no longer get the supermatter sliver objective if the station does not have a supermatter (#21337)

* You can no longer get the supermatter sliver objective if the station does not have a supermatter

* sirryans changes

code/game/gamemodes/objective.dm

@@ -507,6 +507,8 @@ GLOBAL_LIST_INIT(potential_theft_objectives, (subtypesof(/datum/theft_objective)
 				break
 		if(has_invalid_owner)
 			continue
+		if(!O.check_objective_conditions())
+			continue
 		if(O.flags & 2) // THEFT_FLAG_UNIQUE
 			continue
 

code/game/gamemodes/steal_items.dm

@@ -28,6 +28,11 @@
 			return 1
 	return 0
 
+//This proc is to be used for not granting objectives if a special requirement other than job is not met.
+
+/datum/theft_objective/proc/check_objective_conditions()
+	return TRUE
+
 /datum/proc/check_special_completion() //for objectives with special checks (is that slime extract unused? does that intellicard have an ai in it? etcetc)
 	return 1
 
@@ -144,6 +149,9 @@
 	special_equipment = /obj/item/storage/box/syndie_kit/supermatter
 	job_possession = FALSE //The CE / engineers / atmos techs do not carry around supermater slivers.
 
+/datum/theft_objective/supermatter_sliver/check_objective_conditions() //If there is no supermatter, you don't get the objective. Yes, one could order it from cargo, but I don't think that is fair, especially if we get a map without a supermatter
+	return !isnull(GLOB.main_supermatter_engine)
+
 /datum/theft_objective/plutonium_core
 	name = "the plutonium core from the station's nuclear device"
 	typepath = /obj/item/nuke_core/plutonium