"It has been 0 days since the last incident" sign (#70099)

Adds a fun sign to various places in engineering which tracks how many days (read: rounds) it has been since last time the engine delaminated.

code/modules/power/supermatter/supermatter_delamination/_sm_delam.dm

@@ -18,15 +18,19 @@ GLOBAL_LIST_INIT(sm_delam_list, list(
 /// Called when the count down has been finished, do the nasty work.
 /// [/obj/machinery/power/supermatter_crystal/proc/count_down]
 /datum/sm_delam/proc/delaminate(obj/machinery/power/supermatter_crystal/sm)
+	if (sm.is_main_engine)
+		SSpersistence.rounds_since_engine_exploded = ROUNDCOUNT_ENGINE_JUST_EXPLODED
+		for (var/obj/structure/sign/delamination_counter/sign as anything in GLOB.map_delamination_counters)
+			sign.update_count(ROUNDCOUNT_ENGINE_JUST_EXPLODED)
 	qdel(sm)
 
-/// Whatever we're supposed to do when a delam is currently in progress. 
+/// Whatever we're supposed to do when a delam is currently in progress.
 /// Mostly just to tell people how useless engi is, and play some alarm sounds.
 /// Returns TRUE if we just told people a delam is going on. FALSE if its healing or we didnt say anything.
 /// [/obj/machinery/power/supermatter_crystal/proc/process_atmos]
 /datum/sm_delam/proc/delam_progress(obj/machinery/power/supermatter_crystal/sm)
 	if(sm.damage <= sm.warning_point) // Damage is too low, lets not
-		return FALSE 
+		return FALSE
 
 	if (sm.damage >= sm.emergency_point && sm.damage_archived < sm.emergency_point)
 		sm.investigate_log("has entered the emergency point.", INVESTIGATE_ENGINE)

code/modules/power/supermatter/supermatter_delamination/cascade_delam.dm

@@ -66,7 +66,7 @@
 	SSsupermatter_cascade.can_fire = TRUE
 	SSsupermatter_cascade.cascade_initiated = TRUE
 	effect_crystal_mass(sm, rift)
-	qdel(sm)
+	return ..()
 
 /datum/sm_delam/cascade/examine(obj/machinery/power/supermatter_crystal/sm)
 	return list(span_bolddanger("The crystal is vibrating at immense speeds, warping space around it!"))

code/modules/power/supermatter/supermatter_delamination/common_delams.dm

@@ -12,7 +12,7 @@
 		return FALSE
 	sm.radio.talk_into(
 		sm,
-		"Warning: Critical coolant mass reached.", 
+		"Warning: Critical coolant mass reached.",
 		sm.damage > sm.emergency_point ? sm.emergency_channel : sm.warning_channel
 	)
 
@@ -26,7 +26,7 @@
 		effect_anomaly(sm)
 	if(!effect_singulo(sm))
 		effect_explosion(sm)
-	qdel(sm)
+	return ..()
 
 /// When we have too much power.
 /datum/sm_delam/tesla
@@ -54,7 +54,7 @@
 		effect_anomaly(sm)
 	effect_tesla(sm)
 	effect_explosion(sm)
-	qdel(sm)
+	return ..()
 
 /// Default delam.
 /datum/sm_delam/explosive
@@ -71,4 +71,4 @@
 	if(sm.is_main_engine)
 		effect_anomaly(sm)
 	effect_explosion(sm)
-	qdel(sm)
+	return ..()