-Added Zelack's alien infection code. Aliens can now tell if someone is impregnated or not.

-Fixed a bug where a Cyborg could drop their module by clicking it on an operating table.

git-svn-id: http://tgstation13.googlecode.com/svn/trunk@4561 316c924e-a436-60f5-8080-3fe189b3f50e

code/datums/diseases/alien_embryo.dm

@@ -15,6 +15,18 @@
 		cure(0)
 	return
 
+/datum/disease/alien_embryo/New()
+	..()
+	/* Special Hud for xenos */
+	spawn(0)
+		if (affected_mob)
+			AddInfectionImages(affected_mob)
+
+/datum/disease/alien_embryo/cure(var/resistance=1)
+	..()
+	spawn(0)
+		if (affected_mob)
+			RemoveInfectionImages(affected_mob)
 
 /datum/disease/alien_embryo
 	name = "Unidentified Foreign Body"
@@ -88,3 +100,51 @@
 				gibbed = 1
 				return
 
+/*----------------------------------------
+Proc: RefreshInfectionImage()
+Des: Removes all infection images from aliens and places an infection image on all infected mobs for aliens.
+----------------------------------------*/
+/datum/disease/alien_embryo/proc/RefreshInfectionImage()
+	spawn(0)
+		for (var/mob/living/carbon/alien/alien in world)
+			if (alien.client)
+				for(var/image/I in alien.client.images)
+					if(I.icon_state == "infected")
+						del(I)
+
+		for (var/mob/living/carbon/alien/alien in world)
+			if (alien.client)
+				for (var/mob/living/carbon/C in world)
+					if(C)
+						if (C.status_flags & XENO_HOST)
+							var/I = image('icons/mob/alien.dmi', loc = C, icon_state = "infected")
+							alien.client.images += I
+		return
+
+/*----------------------------------------
+Proc: AddInfectionImages(C)
+Des: Checks if the passed mob (C) is infected with the alien egg, then gives each alien client an infected image at C.
+----------------------------------------*/
+/datum/disease/alien_embryo/proc/AddInfectionImages(var/mob/living/carbon/C)
+	if (C)
+		for (var/mob/living/carbon/alien/alien in world)
+			if (alien.client)
+				if (C.status_flags & XENO_HOST)
+					var/I = image('icons/mob/alien.dmi', loc = C, icon_state = "infected")
+					alien.client.images += I
+	return
+
+/*----------------------------------------
+Proc: RemoveInfectionImage(C)
+Des: Removes the alien infection image from all aliens in the world located in passed mob (C).
+----------------------------------------*/
+
+/datum/disease/alien_embryo/proc/RemoveInfectionImages(var/mob/living/carbon/C)
+	if (C)
+		for (var/mob/living/carbon/alien/alien in world)
+			if (alien.client)
+				for(var/image/I in alien.client.images)
+					if(I.loc == C)
+						if(I.icon_state == "infected")
+							del(I)
+	return