Generalizes the feed and force feed checks.

code/game/objects/items/weapons/material/kitchen.dm

@@ -34,9 +34,7 @@
 		else
 			return ..()
 
-	if(ishuman(M))
-		var/mob/living/carbon/human/H = M
-		if(!H.can_eat(src))
+	if(!M.can_eat(src))
 		return
 
 	if (reagents.total_volume > 0)

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

@@ -1,11 +1,37 @@
-/mob/living/carbon/human/proc/can_eat(var/food, var/feedback = 1)
-	if(!check_has_mouth())
+#define HUMAN_EATING_NO_ISSUE		0
+#define HUMAN_EATING_NO_MOUTH		1
+#define HUMAN_EATING_BLOCKED_MOUTH	2
+
+/mob/living/carbon/human/can_eat(var/food, var/feedback = 1)
+	var/status = can_eat_status()
+	if(status == HUMAN_EATING_NO_ISSUE)
+		return 1
 	if(feedback)
+		if(status == HUMAN_EATING_NO_MOUTH)
 			src << "Where do you intend to put \the [food]? You don't have a mouth!"
-		return 0
-	var/obj/item/blocked = check_mouth_coverage()
-	if(blocked)
-		if(feedback)
+		else if(status == HUMAN_EATING_BLOCKED_MOUTH)
 			src << "<span class='warning'>\The [blocked] is in the way!</span>"
 	return 0
+
+/mob/living/carbon/human/can_force_feed(var/feeder, var/food, var/feedback = 1)
+	var/status = can_eat_status()
+	if(status == HUMAN_EATING_NO_ISSUE)
 		return 1
+	if(feedback)
+		if(status == HUMAN_EATING_NO_MOUTH)
+			feeder << "Where do you intend to put \the [food]? \The [src] doesn't have a mouth!"
+		else if(status == HUMAN_EATING_BLOCKED_MOUTH)
+			feeder << "<span class='warning'>\The [blocked] is in the way!</span>"
+	return 0
+
+/mob/living/carbon/human/proc/can_eat_status()
+	if(!check_has_mouth())
+		return HUMAN_EATING_NO_MOUTH
+	var/obj/item/blocked = check_mouth_coverage()
+	if(blocked)
+		return HUMAN_EATING_BLOCKED_MOUTH
+	return HUMAN_EATING_NO_ISSUE
+
+#undef HUMAN_EATING_NO_ISSUE
+#undef HUMAN_EATING_NO_MOUTH
+#undef HUMAN_EATING_BLOCKED_MOUTH

code/modules/mob/living/simple_animal/friendly/slime.dm

@@ -14,6 +14,11 @@
 	emote_see = list("jiggles", "bounces in place")
 	var/colour = "grey"
 
+/mob/living/simple_animal/slime/can_force_feed(var/feeder, var/food, var/feedback)
+	if(feedback)
+		feeder << "Where do you intend to put \the [food]? \The [src] doesn't have a mouth!"
+	return 0
+
 /mob/living/simple_animal/adultslime
 	name = "pet slime"
 	desc = "A lovable, domesticated slime."

code/modules/mob/mob_helpers.dm

@@ -619,6 +619,12 @@ proc/is_blind(A)
 /mob/proc/is_client_active(var/active = 1)
 	return client && client.inactivity < active MINUTES
 
+/mob/proc/can_eat()
+	return 1
+
+/mob/proc/can_force_feed()
+	return 1
+
 #define SAFE_PERP -50
 /mob/living/proc/assess_perp(var/obj/access_obj, var/check_access, var/auth_weapons, var/check_records, var/check_arrest)
 	if(stat == DEAD)

code/modules/reagents/reagent_containers/food/snacks.dm

@@ -43,9 +43,7 @@
 	if(istype(M, /mob/living/carbon))
 		var/fullness = M.nutrition + (M.reagents.get_reagent_amount("nutriment") * 25)
 		if(M == user)								//If you're eating it yourself
-			if(istype(M,/mob/living/carbon/human))
-				var/mob/living/carbon/human/H = M
-				if(!H.can_eat(src))
+			if(!M.can_eat(src))
 				return
 
 			if (fullness <= 50)
@@ -60,17 +58,8 @@
 				M << "<span class='danger'>You cannot force any more of [src] to go down your throat.</span>"
 				return 0
 		else
-			if(istype(M,/mob/living/carbon/human))
-				var/mob/living/carbon/human/H = M
-				if(!H.check_has_mouth())
-					user << "Where do you intend to put \the [src]? \The [H] doesn't have a mouth!"
+			if(!M.can_force_feed(user, src))
 				return
-				var/obj/item/blocked = H.check_mouth_coverage()
-				if(blocked)
-					user << "<span class='warning'>\The [blocked] is in the way!</span>"
-					return
-
-			if(!istype(M, /mob/living/carbon/slime))		//If you're feeding it to someone else.
 
 			if (fullness <= (550 * (1 + M.overeatduration / 1000)))
 				user.visible_message("<span class='danger'>[user] attempts to feed [M] [src].</span>")
@@ -86,10 +75,6 @@
 
 			user.visible_message("<span class='danger'>[user] feeds [M] [src].</span>")
 
-			else
-				user << "This creature does not seem to have a mouth!"
-				return
-
 		if(reagents)								//Handle ingestion of the reagent.
 			playsound(M.loc,'sound/items/eatfood.ogg', rand(10,50), 1)
 			if(reagents.total_volume)

code/modules/reagents/reagent_containers/pill.dm

@@ -19,15 +19,7 @@
 
 	attack(mob/M as mob, mob/user as mob, def_zone)
 		if(M == user)
-
-			if(istype(M, /mob/living/carbon/human))
-				var/mob/living/carbon/human/H = M
-				if(!H.check_has_mouth())
-					user << "Where do you intend to put \the [src]? You don't have a mouth!"
-					return
-				var/obj/item/blocked = H.check_mouth_coverage()
-				if(blocked)
-					user << "<span class='warning'>\The [blocked] is in the way!</span>"
+			if(!M.can_eat(src))
 				return
 
 			M << "<span class='notice'>You swallow \the [src].</span>"
@@ -38,14 +30,7 @@
 			return 1
 
 		else if(istype(M, /mob/living/carbon/human))
-
-			var/mob/living/carbon/human/H = M
-			if(!H.check_has_mouth())
-				user << "Where do you intend to put \the [src]? \The [H] doesn't have a mouth!"
-				return
-			var/obj/item/blocked = H.check_mouth_coverage()
-			if(blocked)
-				user << "<span class='warning'>\The [blocked] is in the way!</span>"
+			if(!M.can_force_feed(user, src))
 				return
 
 			user.visible_message("<span class='warning'>[user] attempts to force [M] to swallow \the [src].</span>")