Working Joes can no longer eat (#3828)

# About the pull request

Mechanically prevents eating and being force-fed as a Joe

# Explain why it's good for the game

While not worried about the Joe itself eating the Burger, it physically
does not have anything to feed the burger to (The mouth is mostly
aesthetic with a speaker). As such, it makes no sense that you can feed
food into a Working Joe, and should not be possible.

# Changelog
:cl:
del: Working Joes can no longer be fed.
code: New trait: Cannot eat. Self-explanatory.
/:cl:

---------

Co-authored-by: harryob <[email protected]>

code/__DEFINES/traits.dm

@@ -123,7 +123,7 @@
 #define TRAIT_SUPER_STRONG "t_super_strong"
 /// Foreign biology. Basic medHUDs won't show the mob. (Yautja, Zombies)
 #define TRAIT_FOREIGN_BIO "t_foreign_bio"
-/// Eye color changes on intent. (G1 Synths)
+/// Eye color changes on intent. (G1 Synths and WJs)
 #define TRAIT_INTENT_EYES "t_intent_eyes"
 /// Masked synthetic biology. Basic medHUDs will percieve the mob as human. (Infiltrator Synths)
 #define TRAIT_INFILTRATOR_SYNTH "t_infiltrator_synth"
@@ -157,6 +157,8 @@
 #define TRAIT_LEADERSHIP "t_leadership"
 /// If the mob can see the reagents contents of stuff
 #define TRAIT_REAGENT_SCANNER "reagent_scanner"
+/// If the mob cannot eat/be fed
+#define TRAIT_CANNOT_EAT "t_cannot_eat"
 /// If the mob is being lazed by a sniper spotter
 #define TRAIT_SPOTTER_LAZED "t_spotter_lazed"
 /// If the mob has ear protection. Protects from external ear damage effects. Includes explosions, firing the RPG, screeching DEAFNESS only, and flashbangs.
@@ -261,6 +263,7 @@ GLOBAL_LIST_INIT(traits_by_type, list(
 		"TRAIT_BIMEX" = TRAIT_BIMEX,
 		"TRAIT_EMOTE_CD_EXEMPT" = TRAIT_EMOTE_CD_EXEMPT,
 		"TRAIT_LISPING" = TRAIT_LISPING,
+		"TRAIT_CANNOT_EAT" = TRAIT_CANNOT_EAT,
 	),
 	/mob/living/carbon/xenomorph = list(
 		"TRAIT_ABILITY_NO_PLASMA_TRANSFER" = TRAIT_ABILITY_NO_PLASMA_TRANSFER,

code/game/objects/items/reagent_containers/food/snacks.dm

@@ -66,6 +66,10 @@
 		if(issynth(C))
 			fullness = 200 //Synths never get full
 
+		if(HAS_TRAIT(M, TRAIT_CANNOT_EAT)) //Do not feed the Working Joes
+			to_chat(user, SPAN_DANGER("[user == M ? "You are" : "[M] is"] unable to eat!"))
+			return
+
 		if(fullness > 540)
 			C.overeat_cooldown = world.time + OVEREAT_TIME
 

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

@@ -111,7 +111,7 @@
 	name_plural = "Working Joes"
 	uses_ethnicity = FALSE
 	burn_mod = 0.65 // made for hazardous environments, withstanding temperatures up to 1210 degrees
-	mob_inherent_traits = list(TRAIT_SUPER_STRONG, TRAIT_INTENT_EYES, TRAIT_EMOTE_CD_EXEMPT)
+	mob_inherent_traits = list(TRAIT_SUPER_STRONG, TRAIT_INTENT_EYES, TRAIT_EMOTE_CD_EXEMPT, TRAIT_CANNOT_EAT)
 
 	slowdown = 0.45
 	hair_color = "#000000"