Mucus and a few fixes to vira.

Added mucus that is added to the map sometimes when sneezing or coughing. Blood now carries the spiller's virus2. Fixed a problem with virus spreading.

code/WorkInProgress/virus2/base.dm

@@ -38,7 +38,7 @@ proc/airborne_can_reach(turf/source, turf/target)
 
 	for(var/i=0, i<5, i++) if(!step_towards(dummy, target)) break
 
-	var/rval = (dummy.loc == target)
+	var/rval = (dummy.loc in range(1,target))
 	del dummy
 	return rval
 
@@ -396,6 +396,12 @@ proc/airborne_can_reach(turf/source, turf/target)
 		mob.say("*sneeze")
 		if(mob.virus2) mob.virus2.spread_airborne(mob)
 		if(mob.virus2) mob.virus2.spread_airborne(mob)
+		if(prob(5))
+			var/obj/effect/decal/cleanable/mucus/this = new(mob.loc)
+			this.anchored = 0
+			step(this, mob.dir)
+			this.anchored = 1
+			this.virus2 = mob.virus2
 
 
 /datum/disease2/effect/greater/cough
@@ -405,6 +411,9 @@ proc/airborne_can_reach(turf/source, turf/target)
 		mob.say("*cough")
 		if(mob.virus2) mob.virus2.spread_airborne(mob)
 		if(mob.virus2) mob.virus2.spread_airborne(mob)
+		if(prob(2))
+			var/obj/effect/decal/cleanable/mucus/this = new(mob.loc)
+			this.virus2 = mob.virus2
 
 /datum/disease2/effect/greater/gunck
 	name = "Flemmingtons"
@@ -481,6 +490,12 @@ proc/airborne_can_reach(turf/source, turf/target)
 		mob.say("*sneeze")
 		if(mob.virus2) mob.virus2.spread_airborne(mob)
 		if(mob.virus2) mob.virus2.spread_airborne(mob)
+		if(prob(10))
+			var/obj/effect/decal/cleanable/mucus/this = new(mob.loc)
+			this.anchored = 0
+			step(this, mob.dir)
+			this.anchored = 1
+			this.virus2 = mob.virus2
 
 /datum/disease2/effect/lesser/cough
 	name = "Anima Syndrome"
@@ -489,6 +504,9 @@ proc/airborne_can_reach(turf/source, turf/target)
 		mob.say("*cough")
 		if(mob.virus2) mob.virus2.spread_airborne(mob)
 		if(mob.virus2) mob.virus2.spread_airborne(mob)
+		if(prob(10))
+			var/obj/effect/decal/cleanable/mucus/this = new(mob.loc)
+			this.virus2 = mob.virus2
 
 /*/datum/disease2/effect/lesser/hallucinations
 	name = "Hallucinational Syndrome"

code/defines/obj/decal.dm

@@ -58,6 +58,17 @@
 			D.cure(0)
 		..()
 
+/obj/effect/decal/cleanable/mucus
+	name = "Mucus"
+	desc = "Icky mucus!"
+	density = 0
+	anchored = 1
+	layer = 2
+	icon = 'blood.dmi'
+	icon_state = "mucus"
+	random_icon_states = list("mucus")
+	var/datum/disease2/disease/virus2 = null
+
 /obj/effect/decal/cleanable/blood/splatter
 	random_icon_states = list("gibbl1", "gibbl2", "gibbl3", "gibbl4", "gibbl5")
 

code/game/atom_procs.dm

@@ -142,6 +142,7 @@
 			var/obj/effect/decal/cleanable/blood/this = new /obj/effect/decal/cleanable/blood(source2)
 			this.blood_DNA = M.dna.unique_enzymes
 			this.blood_type = M.b_type
+			this.virus2 = M.virus2
 			for(var/datum/disease/D in M.viruses)
 				var/datum/disease/newDisease = new D.type
 				this.viruses += newDisease

code/modules/mob/living/carbon/human/life.dm

@@ -998,9 +998,12 @@
 					D.cure()
 
 			if(!virus2)
-				for(var/obj/effect/decal/cleanable/blood/B in src.loc)
+				for(var/obj/effect/decal/cleanable/blood/B in view(1,src))
-					if(B.virus2)
+					if(B.virus2 && get_infection_chance())
 						infect_virus2(src,B.virus2)
+				for(var/obj/effect/decal/cleanable/mucus/M in view(1,src))
+					if(M.virus2 && get_infection_chance())
+						infect_virus2(src,M.virus2)
 			else
 				virus2.activate(src)