Changes IPC eyes to optics, generalizes vision organs

Now any organ can cause vision loss if damaged, not just ones that
inherit from organ/internal/eye.

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

@@ -1030,24 +1030,36 @@
 						blinded = 1
 
 			// Check everything else.
-			if(!species.has_organ["eyes"]) // Presumably if a species has no eyes, they see via something else.
+			
+			//Vision
+			var/obj/item/organ/vision
+			if(species.vision_organ)
+				vision = internal_organs_by_name[species.vision_organ]
+			
+			if(!vision) // Presumably if a species has no vision organs, they see via some other means.
 				eye_blind =  0
 				blinded =    0
 				eye_blurry = 0
-			else if(!has_eyes())           // Eyes cut out? Permablind.
+			else if(vision.is_broken())   // Vision organs cut out or broken? Permablind.
 				eye_blind =  1
 				blinded =    1
 				eye_blurry = 1
-			else if(sdisabilities & BLIND) // Disabled-blind, doesn't get better on its own
-				blinded =    1
-			else if(eye_blind)		       // Blindness, heals slowly over time
-				eye_blind =  max(eye_blind-1,0)
-				blinded =    1
-			else if(istype(glasses, /obj/item/clothing/glasses/sunglasses/blindfold))	//resting your eyes with a blindfold heals blurry eyes faster
-				eye_blurry = max(eye_blurry-3, 0)
-				blinded =    1
-			else if(eye_blurry)	           // Blurry eyes heal slowly
-				eye_blurry = max(eye_blurry-1, 0)
+			else 
+				//blindness
+				if(sdisabilities & BLIND) // Disabled-blind, doesn't get better on its own
+					blinded =    1
+				else if(eye_blind)		       // Blindness, heals slowly over time
+					eye_blind =  max(eye_blind-1,0)
+					blinded =    1
+				else if(istype(glasses, /obj/item/clothing/glasses/sunglasses/blindfold))	//resting your eyes with a blindfold heals blurry eyes faster
+					eye_blurry = max(eye_blurry-3, 0)
+					blinded =    1
+				
+				//blurry sight
+				if(vision.is_bruised())   // Vision organs impaired? Permablurry.
+					eye_blurry = 1
+				if(eye_blurry)	           // Blurry eyes heal slowly
+					eye_blurry = max(eye_blurry-1, 0)
 
 			//Ears
 			if(sdisabilities & DEAF)	//disabled-deaf, doesn't get better on its own

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

@@ -117,6 +117,7 @@
 		"appendix" = /obj/item/organ/appendix,
 		"eyes" =     /obj/item/organ/eyes
 		)
+	var/vision_organ              // If set, this organ is required for vision. Defaults to "eyes" if the species has them.
 
 	var/list/has_limbs = list(
 		"chest" =  list("path" = /obj/item/organ/external/chest),
@@ -143,6 +144,10 @@
 	else
 		hud = new()
 
+	//If the species has eyes, they are the default vision organ
+	if(!vision_organ && has_organ["eyes"])
+		vision_organ = "eyes"
+
 	unarmed_attacks = list()
 	for(var/u_type in unarmed_types)
 		unarmed_attacks += new u_type()

code/modules/mob/living/carbon/human/species/station/station.dm

@@ -277,9 +277,11 @@
 	has_organ = list(
 		"brain" = /obj/item/organ/mmi_holder/posibrain,
 		"cell" = /obj/item/organ/cell,
-		"eyes" = /obj/item/organ/optical_sensor
+		"optics" = /obj/item/organ/optical_sensor
 		)
 
+	vision_organ = "optics"
+
 	has_limbs = list(
 		"chest" =  list("path" = /obj/item/organ/external/chest/ipc),
 		"groin" =  list("path" = /obj/item/organ/external/groin/ipc),

code/modules/organs/organ_internal.dm

@@ -79,15 +79,6 @@
 		owner.b_eyes ? owner.b_eyes : 0
 		)
 
-/obj/item/organ/eyes/process() //Eye damage replaces the old eye_stat var.
-	..()
-	if(!owner)
-		return
-	if(is_bruised())
-		owner.eye_blurry = 20
-	if(is_broken())
-		owner.eye_blind = 20
-
 /obj/item/organ/liver
 	name = "liver"
 	icon_state = "liver"