no_lava fix, make sure simple explosions don't nuke the Syndicate base

code/__DEFINES/misc.dm

@@ -423,3 +423,6 @@
 #define GHOST_ORBIT_HEXAGON		"hexagon"
 #define GHOST_ORBIT_SQUARE		"square"
 #define GHOST_ORBIT_PENTAGON	"pentagon"
+
+//Explosive wall groups
+#define EXPLOSIVE_WALL_GROUP_SYNDICATE_BASE "syndicate_base"

code/_globalvars/lists/objects.dm

@@ -48,3 +48,5 @@ GLOBAL_LIST_INIT(active_jammers, list())             // List of active radio jam
 GLOBAL_LIST_INIT(active_diseases, list()) 			//List of Active disease in all mobs; purely for quick referencing.
 
 GLOBAL_LIST_EMPTY(mob_spawners) 		    // All mob_spawn objects
+
+GLOBAL_LIST_EMPTY(explosive_walls)

code/game/machinery/syndicatebomb.dm

@@ -275,6 +275,15 @@
 	desc = "Do not taunt. Warranty invalid if exposed to high temperature. Not suitable for agents under 3 years of age."
 	payload = /obj/item/bombcore/large
 	can_unanchor = FALSE
+	var/explosive_wall_group = EXPLOSIVE_WALL_GROUP_SYNDICATE_BASE // If set, this bomb will also cause explosive walls in the same group to explode
+
+/obj/machinery/syndicatebomb/self_destruct/try_detonate(ignore_active = FALSE)
+	. = ..()
+	if(. && explosive_wall_group)
+		for(var/wall in GLOB.explosive_walls)
+			var/turf/simulated/wall/mineral/plastitanium/explosive/E = wall
+			if(E.explosive_wall_group == explosive_wall_group)
+				E.self_destruct()
 
 ///Bomb Cores///
 

code/game/objects/effects/mapping_helpers.dm

@@ -64,13 +64,10 @@
 	
 	return late ? INITIALIZE_HINT_LATELOAD : qdel(src) // INITIALIZE_HINT_QDEL <-- Doesn't work
 
-//needs to do its thing before spawn_rivers() is called
-INITIALIZE_IMMEDIATE(/obj/effect/mapping_helpers/no_lava)
-
 /obj/effect/mapping_helpers/no_lava
 	icon_state = "no_lava"
 
-/obj/effect/mapping_helpers/no_lava/Initialize(mapload)
-	. = ..()
+/obj/effect/mapping_helpers/no_lava/New()
 	var/turf/T = get_turf(src)
-	T.flags |= NO_LAVA_GEN
+	T.flags |= NO_LAVA_GEN
+	. = ..()

code/game/turfs/simulated/walls_mineral.dm

@@ -275,21 +275,20 @@
 	icon_state = "map-overspace"
 	fixed_underlay = list("space"=1)
 
-/turf/simulated/wall/mineral/plastitanium/explosive/dismantle_wall(devastated, explode)
-	var/obj/item/bombcore/large/bombcore = new(get_turf(src))
-	if(devastated || explode)
-		bombcore.detonate()
-	..()
+/turf/simulated/wall/mineral/plastitanium/explosive
+	var/explosive_wall_group = EXPLOSIVE_WALL_GROUP_SYNDICATE_BASE
 
-/turf/simulated/wall/mineral/plastitanium/explosive/ex_act(severity, target)
-	switch(severity)
-		if(1)
-			dismantle_wall(1,1)
-		if(2)
-			dismantle_wall(1,1)
-		if(3)
-			if (prob(hardness))
-				dismantle_wall(0,1)
+/turf/simulated/wall/mineral/plastitanium/explosive/Initialize(mapload)
+	. = ..()
+	GLOB.explosive_walls += src
+
+/turf/simulated/wall/mineral/plastitanium/explosive/Destroy()
+	GLOB.explosive_walls -= src
+	return ..()
+
+/turf/simulated/wall/mineral/plastitanium/explosive/proc/self_destruct()
+	var/obj/item/bombcore/large/bombcore = new(get_turf(src))
+	bombcore.detonate()
 
 //have to copypaste this code
 /turf/simulated/wall/mineral/plastitanium/interior/copyTurf(turf/T)

code/modules/ruins/lavalandruin_code/syndicate_base.dm

@@ -61,7 +61,7 @@
 /obj/effect/mob_spawn/human/lavaland_syndicate/comms/space
 	flavour_text = "<span class='big bold'>You are a syndicate agent,</span><b> assigned to a small listening post station situated near your hated enemy's top secret research facility: Space Station 13. <b>Monitor enemy activity as best you can, and try to keep a low profile. <font size=6>DO NOT</font> abandon the base.</b> Use the communication equipment to provide support to any field agents, and sow disinformation to throw Nanotrasen off your trail. Do not let the base fall into enemy hands!</b>" 
 
-/obj/effect/mob_spawn/human/lavaland_syndicate/comms/space/Initialize()
+/obj/effect/mob_spawn/human/lavaland_syndicate/comms/space/Initialize(mapload)
 	. = ..()
 	if(prob(90)) //only has a 10% chance of existing, otherwise it'll just be a NPC syndie.
 		new /mob/living/simple_animal/hostile/syndicate/ranged(get_turf(src))