Saving more work.

code/modules/blob2/blobs/base_blob.dm

@@ -1,4 +1,4 @@
-var/list/blobs = list()
+GLOBAL_LIST_EMPTY(all_blobs)
 
 /obj/structure/blob
 	name = "blob"
@@ -18,21 +18,21 @@ var/list/blobs = list()
 	var/mob/observer/blob/overmind = null
 	var/base_name = "blob" // The name that gets appended along with the blob_type's name.
 
-/obj/structure/blob/New(var/newloc, var/new_overmind)
-	..(newloc)
+/obj/structure/blob/Initialize(newloc, new_overmind)
 	if(new_overmind)
 		overmind = new_overmind
 	update_icon()
 	if(!integrity)
 		integrity = max_integrity
 	set_dir(pick(cardinal))
-	blobs += src
+	GLOB.all_blobs += src
 	consume_tile()
+	return ..()
 
 
 /obj/structure/blob/Destroy()
 	playsound(src.loc, 'sound/effects/splat.ogg', 50, 1) //Expand() is no longer broken, no check necessary.
-	blobs -= src
+	GLOB.all_blobs -= src
 	overmind = null
 	return ..()
 
@@ -112,7 +112,7 @@ var/list/blobs = list()
 		if(overmind)
 			expand_probablity *= overmind.blob_type.spread_modifier
 			if(overmind.blob_type.slow_spread_with_size)
-				expand_probablity /= (blobs.len / 10)
+				expand_probablity /= (GLOB.all_blobs.len / 10)
 
 		if(distance <= expand_range)
 			var/can_expand = TRUE

code/modules/blob2/blobs/core.dm

@@ -12,6 +12,7 @@ var/list/blob_cores = list()
 	health_regen = 0 //we regen in Life() instead of when pulsed
 	var/datum/blob_type/desired_blob_type = null // If this is set, the core always creates an overmind possessing this blob type.
 	var/difficulty_threshold = null // Otherwise if this is set, it picks a random blob_type that is equal or lower in difficulty.
+	var/difficulty_floor = null // Related to the above var, acts as a floor value to the above, inclusive.
 	var/core_regen = 2
 	var/overmind_get_delay = 0 //we don't want to constantly try to find an overmind, this var tracks when we'll try to get an overmind again
 	var/resource_delay = 0
@@ -23,14 +24,18 @@ var/list/blob_cores = list()
 	ai_controlled = FALSE
 
 // Spawn these if you want a semi-random blob.
+// Can give a random easy blob.
 /obj/structure/blob/core/random_easy
 	difficulty_threshold = BLOB_DIFFICULTY_EASY
 
+// Can give a random easy or medium blob.
 /obj/structure/blob/core/random_medium
 	difficulty_threshold = BLOB_DIFFICULTY_MEDIUM
 
+// Can give a random medium or hard blob.
 /obj/structure/blob/core/random_hard
 	difficulty_threshold = BLOB_DIFFICULTY_HARD
+	difficulty_floor = BLOB_DIFFICULTY_MEDIUM
 
 // Spawn these if you want a specific blob.
 /obj/structure/blob/core/blazing_oil
@@ -81,8 +86,8 @@ var/list/blob_cores = list()
 /obj/structure/blob/core/classic
 	desired_blob_type = /datum/blob_type/classic
 
-/obj/structure/blob/core/New(var/newloc, var/client/new_overmind = null, new_rate = 2, placed = 0)
-	..(newloc)
+/obj/structure/blob/core/Initialize(newloc, client/new_overmind = null, new_rate = 2, placed = 0)
+	. = ..(newloc)
 	blob_cores += src
 	START_PROCESSING(SSobj, src)
 	update_icon() //so it atleast appears
@@ -180,7 +185,9 @@ var/list/blob_cores = list()
 	var/list/valid_types = list()
 	for(var/thing in subtypesof(/datum/blob_type))
 		var/datum/blob_type/BT = thing
-		if(initial(BT.difficulty) > difficulty_threshold)
+		if(initial(BT.difficulty) > difficulty_threshold) // Too hard.
+			continue
+		if(initial(BT.difficulty) < difficulty_floor) // Too easy.
 			continue
 		valid_types += BT
 	return pick(valid_types)

code/modules/blob2/blobs/resource.dm

@@ -9,10 +9,10 @@
 	var/resource_delay = 0
 	var/resource_cooldown = 4 SECONDS
 
-/obj/structure/blob/resource/New(var/newloc, var/new_overmind)
-	..(newloc, new_overmind)
+/obj/structure/blob/resource/Initialize(newloc, new_overmind)
 	if(overmind)
 		overmind.resource_blobs += src
+	return ..()
 
 /obj/structure/blob/resource/Destroy()
 	if(overmind)

code/modules/blob2/overmind/overmind.dm

@@ -23,7 +23,7 @@ var/list/overminds = list()
 	var/ai_controlled = TRUE
 	var/auto_pilot = FALSE // If true, and if a client is attached, the AI routine will continue running.
 
-/mob/observer/blob/New(var/newloc, pre_placed = 0, starting_points = 60, desired_blob_type = null)
+/mob/observer/blob/Initialize(newloc, pre_placed = 0, starting_points = 60, desired_blob_type = null)
 	blob_points = starting_points
 	if(pre_placed) //we already have a core!
 		placed = 1
@@ -41,10 +41,10 @@ var/list/overminds = list()
 	if(blob_core)
 		blob_core.update_icon()
 
-	..(newloc)
+	return ..(newloc)
 
 /mob/observer/blob/Destroy()
-	for(var/BL in blobs)
+	for(var/BL in GLOB.all_blobs)
 		var/obj/structure/blob/B = BL
 		if(B && B.overmind == src)
 			B.overmind = null
@@ -65,7 +65,7 @@ var/list/overminds = list()
 		if(blob_core)
 			stat(null, "Core Health: [blob_core.integrity]")
 		stat(null, "Power Stored: [blob_points]/[max_blob_points]")
-		stat(null, "Total Blobs: [blobs.len]")
+		stat(null, "Total Blobs: [GLOB.all_blobs.len]")
 
 /mob/observer/blob/Move(NewLoc, Dir = 0)
 	if(placed)

code/modules/blob2/overmind/powers.dm

@@ -22,6 +22,9 @@
 		to_chat(src, "<span class='warning'>There is no blob here!</span>")
 		return
 
+	if(B.overmind != src)
+		to_chat(src, span("warning", "This blob isn't controlled by you."))
+
 	if(!istype(B, /obj/structure/blob/normal))
 		to_chat(src, "<span class='warning'>Unable to use this blob, find a normal one.</span>")
 		return
@@ -66,7 +69,7 @@
 		return FALSE
 
 	var/obj/structure/blob/B = null
-	var/list/potential_blobs = blobs.Copy()
+	var/list/potential_blobs = GLOB.all_blobs.Copy()
 	while(potential_blobs.len)
 		var/obj/structure/blob/temp = pick(potential_blobs)
 		if(!(locate(/obj/structure/blob/node) in range(temp, BLOB_NODE_PULSE_RANGE) ) && !(locate(/obj/structure/blob/core) in range(temp, BLOB_CORE_PULSE_RANGE) ))
@@ -77,6 +80,8 @@
 			potential_blobs -= temp // Don't take up the core's shield spot.
 		else if(!istype(temp, /obj/structure/blob/normal))
 			potential_blobs -= temp // Not a normal blob.
+		else if(temp.overmind != src)
+			potential_blobs -= temp // Not our blob.
 		else
 			B = temp
 			break
@@ -107,7 +112,7 @@
 		return FALSE
 
 	var/obj/structure/blob/B = null
-	var/list/potential_blobs = blobs.Copy()
+	var/list/potential_blobs = GLOB.all_blobs.Copy()
 	while(potential_blobs.len)
 		var/obj/structure/blob/temp = pick(potential_blobs)
 		if(!(locate(/obj/structure/blob/node) in range(temp, BLOB_NODE_PULSE_RANGE) ) && !(locate(/obj/structure/blob/core) in range(temp, BLOB_CORE_PULSE_RANGE) ))
@@ -118,6 +123,8 @@
 			potential_blobs -= temp // Don't take up the core's shield spot.
 		else if(!istype(temp, /obj/structure/blob/normal))
 			potential_blobs -= temp // Not a normal blob.
+		else if(temp.overmind != src)
+			potential_blobs -= temp // Not our blob.
 		else
 			B = temp
 			break
@@ -149,7 +156,7 @@
 		return FALSE
 
 	var/obj/structure/blob/B = null
-	var/list/potential_blobs = blobs.Copy()
+	var/list/potential_blobs = GLOB.all_blobs.Copy()
 	while(potential_blobs.len)
 		var/obj/structure/blob/temp = pick(potential_blobs)
 		if(locate(/obj/structure/blob/node) in range(temp, 5) )
@@ -158,6 +165,8 @@
 			potential_blobs -= temp
 		else if(!istype(temp, /obj/structure/blob/normal))
 			potential_blobs -= temp
+		else if(temp.overmind != src)
+			potential_blobs -= temp // Not our blob.
 		else
 			B = temp
 			break
@@ -184,7 +193,7 @@
 		other_T = get_step(T, direction)
 		if(other_T)
 			B = locate(/obj/structure/blob) in other_T
-			if(B)
+			if(B && B.overmind == src)
 				break
 
 	if(!B)
@@ -216,7 +225,7 @@
 		for(var/direction in cardinal)
 			var/turf/T = get_step(L, direction)
 			B = locate(/obj/structure/blob) in T
-			if(B)
+			if(B && B.overmind == src)
 				break
 		if(!B)
 			continue