Fixes time freezing once and forall (#11262)

code/__DEFINES/explosions.dm

@@ -26,9 +26,7 @@
 	target.ex_act(##args);
 
 // Explodable component deletion values
-/// Makes the explodable component queue to reset its exploding status when it detonates.
-#define EXPLODABLE_NO_DELETE 0
 /// Makes the explodable component delete itself when it detonates.
-#define EXPLODABLE_DELETE_SELF 1
+#define EXPLODABLE_DELETE_SELF 0
 /// Makes the explodable component delete its parent when it detonates.
-#define EXPLODABLE_DELETE_PARENT 2
+#define EXPLODABLE_DELETE_PARENT 1

code/controllers/subsystem/explosion.dm

@@ -558,7 +558,9 @@ SUBSYSTEM_DEF(explosions)
 				new /obj/effect/hotspot(T) //Mostly for ambience!
 		cost_flameturf = MC_AVERAGE(cost_flameturf, TICK_DELTA_TO_MS(TICK_USAGE_REAL - timer))
 
-		if (low_turf.len || med_turf.len || high_turf.len)
+		// If a significant amount of turfs change, then we will run lighter for the rest of the tick
+		// because maptick is going to have an unexpected increase.
+		if (low_turf.len + med_turf.len + high_turf.len > 10)
 			Master.laggy_byond_map_update_incoming()
 
 	if(currentpart == SSEXPLOSIONS_MOVABLES)

code/datums/components/explodable.dm

@@ -10,8 +10,6 @@
 	var/delete_after
 	/// For items, lets us determine where things should be hit.
 	var/equipped_slot
-	/// it won't explode again if cooldown is on. This is necessary because explosion() proc through SSexplosion doesn't tell if it's exploded
-	COOLDOWN_DECLARE(explosion_cooling)
 
 /datum/component/explodable/Initialize(devastation_range, heavy_impact_range, light_impact_range, flash_range, uncapped = FALSE, delete_after = EXPLODABLE_DELETE_PARENT)
 	if(!isatom(parent))
@@ -125,9 +123,6 @@
 /// Expldoe and remove the object
 /datum/component/explodable/proc/detonate()
 	SIGNAL_HANDLER
-	if(!COOLDOWN_FINISHED(src, explosion_cooling))
-		return // If we don't do this and this doesn't delete it can lock the MC into only processing Input, Timers, and Explosions.
-	COOLDOWN_START(src, explosion_cooling, 1)
 
 	var/atom/bomb = parent
 	explosion(bomb, devastation_range, heavy_impact_range, light_impact_range, flash_range, uncapped) //epic explosion time

code/datums/materials/basemats.dm

@@ -90,7 +90,7 @@ Unless you know what you're doing, only use the first three numbers. They're in
 	. = ..()
 	if(ismovable(source))
 		source.AddElement(/datum/element/firestacker, amount=1)
-		source.AddComponent(/datum/component/explodable, 0, 0, amount / 1000, amount / 500, delete_after = EXPLODABLE_NO_DELETE)
+		source.AddComponent(/datum/component/explodable, 0, 0, amount / 1000, amount / 500, delete_after = EXPLODABLE_DELETE_PARENT)
 
 /datum/material/plasma/on_removed(atom/source, amount, material_flags)
 	. = ..()