Blob damage now uses a shared take_damage() proc on /atom.

code/game/atom_damage.dm

@@ -0,0 +1,5 @@
+/atom/proc/take_damage(var/damage, var/damage_type = /decl/damage_handler/brute, var/def_zone = null, var/damage_flags = 0, var/used_weapon = null, var/armor_pen, var/silent = FALSE, var/override_droplimb)
+	return FALSE
+
+/atom/proc/heal_damage(var/damage, var/damage_type = /decl/damage_handler/brute, var/def_zone = null, var/damage_flags = 0)
+	return

code/game/objects/items/weapons/grenades/flashbang.dm

@@ -16,7 +16,7 @@
 
 	for(var/obj/effect/blob/B in objs) //Blob damage here
 		var/damage = round(30/(get_dist(B,T)+1))
-		B.take_blob_damage(damage)
+		B.take_damage(damage, /decl/damage_handler/brute)
 
 	new /obj/effect/sparks(loc)
 	new /obj/effect/effect/smoke/illumination(loc, 5, 30, 1, "#ffffff")

code/modules/blob/blob.dm

@@ -15,9 +15,20 @@
 	var/maxHealth = 30
 	var/health
 	var/regen_rate = 5
-	var/brute_resist = 4.3
-	var/fire_resist = 0.8
-	var/laser_resist = 2	// Special resist for laser based weapons - Emitters or handheld energy weaponry. Damage is divided by this and THEN by fire_resist.
+
+	// TODO: make blobs use either damage handlers or an armour extension (or both?).
+	var/list/blob_damage_resistance = list(
+		ARMOR_BULLET = 4.3,
+		ARMOR_BOMB   = 4.3,
+		ARMOR_MELEE  = 4.3,
+		ARMOR_LASER  = 2,
+		ARMOR_ENERGY = 0.8
+	)
+	var/static/list/blob_damage_immunity = list(
+		ARMOR_RAD,
+		ARMOR_BIO
+	)
+
 	var/expandType = /obj/effect/blob
 	var/secondary_core_growth_chance = 5 //% chance to grow a secondary blob core instead of whatever was suposed to grown. Secondary cores are considerably weaker, but still nasty.
 	var/damage_min = 15
@@ -43,7 +54,7 @@
 
 /obj/effect/blob/explosion_act(var/severity)
 	SHOULD_CALL_PARENT(FALSE)
-	take_blob_damage(rand(140 - (severity * 40), 140 - (severity * 20)) / brute_resist)
+	take_damage(rand(140 - (severity * 40), 140 - (severity * 20)), /decl/damage_handler/brute)
 
 /obj/effect/blob/on_update_icon()
 	if(health > maxHealth / 2)
@@ -57,7 +68,19 @@
 		return
 	attempt_attack(global.alldirs)
 
-/obj/effect/blob/proc/take_blob_damage(var/damage)
+/obj/effect/blob/take_damage(var/damage, var/damage_type = /decl/damage_handler/brute, var/def_zone = null, var/damage_flags = 0, var/used_weapon = null, var/armor_pen, var/silent = FALSE, var/override_droplimb)
+
+	var/decl/damage_handler/damage_type_data = GET_DECL(damage_type)
+	var/armor_key = damage_type_data?.get_armor_key(damage_flags)
+	if(armor_key in blob_damage_immunity)
+		return FALSE
+
+	if(armor_key in blob_damage_resistance)
+		damage = round(damage / blob_damage_resistance[armor_key])
+
+	if(damage <= 0)
+		return FALSE
+
 	health -= damage
 	if(health < 0)
 		playsound(loc, 'sound/effects/splat.ogg', 50, 1)
@@ -150,17 +173,6 @@
 			continue
 		attack_living(victim)
 
-/obj/effect/blob/bullet_act(var/obj/item/projectile/Proj)
-	if(!Proj)
-		return
-
-	switch(Proj.damage_type)
-		if(/decl/damage_handler/brute)
-			take_blob_damage(Proj.damage / brute_resist)
-		if(/decl/damage_handler/burn)
-			take_blob_damage((Proj.damage / laser_resist) / fire_resist)
-	return 0
-
 /obj/effect/blob/attackby(var/obj/item/W, var/mob/user)
 	user.setClickCooldown(DEFAULT_ATTACK_COOLDOWN)
 	user.do_attack_animation(src)
@@ -179,17 +191,9 @@
 				to_chat(user, SPAN_WARNING("\The [src] has already been pruned."))
 				return
 
-	var/damage = 0
-	switch(W.damtype)
-		if(/decl/damage_handler/burn)
-			damage = (W.force / fire_resist)
-			if(IS_WELDER(W))
-				playsound(loc, 'sound/items/Welder.ogg', 100, 1)
-		if(/decl/damage_handler/brute)
-			damage = (W.force / brute_resist)
-
-	take_blob_damage(damage)
-	return
+	take_damage(damage, W.damtype)
+	if(IS_WELDER(W) && W.damtype == /decl/damage_handler/burn)
+		playsound(loc, 'sound/items/Welder.ogg', 100, 1)
 
 /obj/effect/blob/core
 	name = "master nucleus"
@@ -219,28 +223,36 @@ regen() will cover update_icon() for this proc
 /obj/effect/blob/core/proc/process_core_health()
 	switch(get_health_percent())
 		if(75 to INFINITY)
-			brute_resist = 3.5
-			fire_resist = 2
+			blob_damage_resistance[ARMOR_BULLET] = 3.5
+			blob_damage_resistance[ARMOR_MELEE]  = 3.5
+			blob_damage_resistance[ARMOR_BOMB]   = 3.5
+			blob_damage_resistance[ARMOR_ENERGY] = 2
 			attack_freq = 5
 			regen_rate = 2
 			times_to_pulse = 4
 			if(reported_low_damage)
 				report_shield_status("high")
 		if(50 to 74)
-			brute_resist = 2.5
-			fire_resist = 1.5
+			blob_damage_resistance[ARMOR_BULLET] = 2.5
+			blob_damage_resistance[ARMOR_MELEE]  = 2.5
+			blob_damage_resistance[ARMOR_BOMB]   = 2.5
+			blob_damage_resistance[ARMOR_ENERGY] = 1.5
 			attack_freq = 4
 			regen_rate = 3
 			times_to_pulse = 3
 		if(34 to 49)
-			brute_resist = 1
-			fire_resist = 0.8
+			blob_damage_resistance[ARMOR_BULLET] = 1
+			blob_damage_resistance[ARMOR_MELEE]  = 1
+			blob_damage_resistance[ARMOR_BOMB]   = 1
+			blob_damage_resistance[ARMOR_ENERGY] = 0.8
 			attack_freq = 3
 			regen_rate = 4
 			times_to_pulse = 2
 		if(-INFINITY to 33)
-			brute_resist = 0.5
-			fire_resist = 0.3
+			blob_damage_resistance[ARMOR_BULLET] = 0.5
+			blob_damage_resistance[ARMOR_MELEE]  = 0.5
+			blob_damage_resistance[ARMOR_BOMB]   = 0.5
+			blob_damage_resistance[ARMOR_ENERGY] = 0.3
 			regen_rate = 5
 			times_to_pulse = 1
 			if(!reported_low_damage)

code/modules/mob/living/living_damage.dm

@@ -40,7 +40,7 @@
 		return my_species.total_health - health
 	return 0
 
-/mob/living/proc/heal_damage(var/damage, var/damage_type = /decl/damage_handler/brute, var/def_zone = null, var/damage_flags = 0)
+/mob/living/heal_damage(var/damage, var/damage_type = /decl/damage_handler/brute, var/def_zone = null, var/damage_flags = 0)
 	if(damage < 0)
 		return take_damage(abs(damage), damage_type, def_zone, damage_flags)
 	return resolve_damage_handler(damage_type)?.heal_mob_damage(src, damage)

code/modules/mob/mob_grabs.dm

@@ -1,6 +1,4 @@
 // Casting stubs for grabs, check /mob/living for full definition.
-/mob/proc/take_damage(var/damage, var/damage_type = /decl/damage_handler/brute, var/def_zone = null, var/damage_flags = 0, var/used_weapon = null, var/armor_pen, var/silent = FALSE, var/override_droplimb)
-	return FALSE
 /mob/proc/get_blocked_ratio(def_zone, damage_type, damage_flags, armor_pen, damage)
 	return
 /mob/proc/standard_weapon_hit_effects(obj/item/I, mob/living/user, var/effective_force, var/hit_zone)

nebula.dme

@@ -594,6 +594,7 @@
 #include "code\datums\wires\vending.dm"
 #include "code\datums\wires\wire_description.dm"
 #include "code\datums\wires\wires.dm"
+#include "code\game\atom_damage.dm"
 #include "code\game\atoms.dm"
 #include "code\game\atoms_fluids.dm"
 #include "code\game\atoms_init.dm"