on second thought, let's not try to half ass fancy ideas.

code/__HELPERS/unsorted.dm

@@ -492,14 +492,6 @@ Turf and target are separate in case you want to teleport some distance from a t
 			assembled += A
 	return assembled
 
-//Return a list of atoms in a location of a given type. Can be refined to look for pixel-shift.
-/proc/get_atoms_of_type(var/atom/here, var/type, var/check_shift, var/shift_x = 0, var/shift_y = 0)
-	. = list()
-	if(here)
-		for(var/atom/thing in here)
-			if(istype(thing, type) && (check_shift && thing.pixel_x == shift_x && thing.pixel_y == shift_y))
-				. += thing
-
 //Step-towards method of determining whether one atom can see another. Similar to viewers()
 /proc/can_see(atom/source, atom/target, length=5) // I couldnt be arsed to do actual raycasting :I This is horribly inaccurate.
 	var/turf/current = get_turf(source)
@@ -764,30 +756,6 @@ Turf and target are separate in case you want to teleport some distance from a t
 		loc = loc.loc
 	return null
 
-/proc/pixel_shift_dir(var/dir, var/amount_x = 32, var/amount_y = 32) //Returns a list with pixel_shift values that will shift an object's icon one tile in the direction passed.
-	amount_x = min(max(0, amount_x), 32) //No less than 0, no greater than 32.
-	amount_y = min(max(0, amount_x), 32)
-	var/list/shift = list("x" = 0, "y" = 0)
-	switch(dir)
-		if(NORTH)
-			shift["y"] = amount_y
-		if(SOUTH)
-			shift["y"] = -amount_y
-		if(EAST)
-			shift["x"] = amount_x
-		if(WEST)
-			shift["x"] = -amount_x
-		if(NORTHEAST)
-			shift = list("x" = amount_x, "y" = amount_y)
-		if(NORTHWEST)
-			shift = list("x" = -amount_x, "y" = amount_y)
-		if(SOUTHEAST)
-			shift = list("x" = amount_x, "y" = -amount_y)
-		if(SOUTHWEST)
-			shift = list("x" = -amount_x, "y" = -amount_y)
-
-	return shift
-
 //For objects that should embed, but make no sense being is_sharp or is_pointed()
 //e.g: rods
 GLOBAL_LIST_INIT(can_embed_types, typecacheof(list(

code/game/objects/items/storage/toolbox.dm

@@ -34,7 +34,7 @@ GLOBAL_LIST_EMPTY(rubber_toolbox_icons)
 /obj/item/storage/toolbox/update_icon()
 	..()
 	cut_overlays()
-	if(blood_DNA.len)
+	if(blood_DNA && blood_DNA.len)
 		add_blood_overlay()
 	if(has_latches)
 		var/icon/I = icon('icons/obj/storage.dmi', latches)

code/modules/mob/living/blood.dm

@@ -267,7 +267,7 @@
 		. = safe
 
 //to add a splatter of blood or other mob liquid.
-/mob/living/proc/add_splatter_floor(turf/T, small_drip, shift_x, shift_y)
+/mob/living/proc/add_splatter_floor(turf/T, small_drip)
 	if(get_blood_id() == null)
 		return
 	if(!T)
@@ -298,10 +298,6 @@
 
 	// Find a blood decal or create a new one.
 	var/obj/effect/decal/cleanable/blood/splats/B = locate() in T
-	var/list/bloods = get_atoms_of_type(T, B, TRUE, 0, 0) //Get all the non-projectile-splattered blood on this turf (not pixel-shifted).
-	if(shift_x || shift_y)
-		bloods = get_atoms_of_type(T, B, TRUE, shift_x, shift_y) //Get all the projectile-splattered blood at these pixels on this turf (pixel-shifted).
-		B = locate() in bloods
 	if(!B)
 		B = new /obj/effect/decal/cleanable/blood/splats(T, get_static_viruses())
 	if(B.bloodiness < MAX_SHOE_BLOODINESS) //add more blood, up to a limit
@@ -310,12 +306,6 @@
 	src.transfer_blood_to(B, 10) //very heavy bleeding, should logically leave larger pools
 	if(temp_blood_DNA)
 		B.blood_DNA |= temp_blood_DNA
-	B.pixel_x = (shift_x)
-	B.pixel_y = (shift_y)
-	B.update_icon()
-	if(shift_x || shift_y)
-		B.layer = BELOW_MOB_LAYER //So the blood lands ontop of things like posters, windows, etc.
-
 
 /mob/living/carbon/human/add_splatter_floor(turf/T, small_drip)
 	if(!(NOBLOOD in dna.species.species_traits))
@@ -351,6 +341,7 @@
 	if(B.bloodiness < MAX_SHOE_BLOODINESS) //add more blood, up to a limit
 		B.bloodiness += BLOOD_AMOUNT_PER_DECAL
 	B.transfer_mob_blood_dna(src) //give blood info to the blood decal.
+	src.transfer_blood_to(B, 10) //very heavy bleeding, should logically leave larger pools
 	if(temp_blood_DNA)
 		B.blood_DNA |= temp_blood_DNA
 

code/modules/projectiles/projectile.dm

@@ -194,17 +194,8 @@
 					C.bleed(damage)
 
 			if(prob(33))
-				var/list/shift = list("x" = 0, "y" = 0)
-				var/turf/step_over = get_step(target_loca, splatter_dir)
+				L.add_splatter_floor(target_loca)
 
-				if(get_splatter_blockage(step_over, target, splatter_dir, target_loca)) //If you can't cross the tile or any of its relevant obstacles...
-					shift = pixel_shift_dir(splatter_dir) //Pixel shift the blood there instead (so you can't see wallsplatter through walls).
-				else
-					target_loca = step_over
-				L.add_splatter_floor(target_loca, shift_x = shift["x"], shift_y = shift["y"])
-				if(ishuman(L))
-					for(var/mob/living/carbon/human/M in step_over) //Bloody the mobs who're infront of the spray.
-						M.bloody_hands = rand(2, 4)
 
 		else if(impact_effect_type && !hitscan)
 			new impact_effect_type(target_loca, hitx, hity)
@@ -240,10 +231,6 @@
 
 	return L.apply_effects(stun, knockdown, unconscious, irradiate, slur, stutter, eyeblur, drowsy, blocked, stamina, jitter)
 
-/obj/item/projectile/proc/get_splatter_blockage(var/turf/step_over, var/atom/target, var/splatter_dir, var/target_loca) //Check whether the place we want to splatter blood is blocked (i.e. by windows).
-	if(step_over.density && !step_over.CanPass(target, step_over, 1)) //Preliminary simple check.
-		return TRUE
-
 /obj/item/projectile/proc/vol_by_damage()
 	if(src.damage)
 		return CLAMP((src.damage) * 0.67, 30, 100)// Multiply projectile damage by 0.67, then CLAMP the value between 30 and 100