Breathing Tube Augment

code/modules/clothing/clothing.dm

@@ -332,7 +332,7 @@ BLIND     // can't see anything
 		mask_adjusted = 1
 		if(adjusted_flags)
 			slot_flags = adjusted_flags
-		if(ishuman(user) && H.internal && user.wear_mask == src) /*If the user was wearing the mask providing internals on their face at the time it was adjusted, turn off internals.
+		if(ishuman(user) && H.internal && !H.get_organ_slot("breathing_tube") && user.wear_mask == src) /*If the user was wearing the mask providing internals on their face at the time it was adjusted, turn off internals.
 																	Otherwise, they adjusted it while it was in their hands or some such so we won't be needing to turn off internals.*/
 			H.update_internals_hud_icon(0)
 			H.internal = null

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

@@ -650,9 +650,10 @@ var/list/ventcrawl_machinery = list(/obj/machinery/atmospherics/unary/vent_pump,
 								"<span class='userdanger'>[usr] tries to [internal ? "close" : "open"] the valve on [src]'s [ITEM].</span>")
 
 				var/no_mask
-				if(!(wear_mask && wear_mask.flags & AIRTIGHT))
-					if(!(head && head.flags & AIRTIGHT))
-						no_mask = 1
+				if(!get_organ_slot("breathing_tube"))
+					if(!(wear_mask && wear_mask.flags & AIRTIGHT))
+						if(!(head && head.flags & AIRTIGHT))
+							no_mask = 1
 				if(no_mask)
 					to_chat(usr, "<span class='warning'>[src] is not wearing a suitable mask or helmet!</span>")
 					return
@@ -663,9 +664,10 @@ var/list/ventcrawl_machinery = list(/obj/machinery/atmospherics/unary/vent_pump,
 						update_internals_hud_icon(0)
 					else
 						var/no_mask2
-						if(!(wear_mask && wear_mask.flags & AIRTIGHT))
-							if(!(head && head.flags & AIRTIGHT))
-								no_mask2 = 1
+						if(!get_organ_slot("breathing_tube"))
+							if(!(wear_mask && wear_mask.flags & AIRTIGHT))
+								if(!(head && head.flags & AIRTIGHT))
+									no_mask2 = 1
 						if(no_mask2)
 							to_chat(usr, "<span class='warning'>[src] is not wearing a suitable mask or helmet!</span>")
 							return

code/modules/mob/living/carbon/carbon_defines.dm

@@ -3,6 +3,7 @@
 	hud_possible = list(HEALTH_HUD,STATUS_HUD,SPECIALROLE_HUD)
 	var/list/stomach_contents = list()
 	var/list/internal_organs	= list()
+	var/list/internal_organs_slot	= list()	//Same as above, but stores "slot ID" - "organ" pairs for easy access.
 	var/antibodies = 0
 
 	var/life_tick = 0      // The amount of life ticks that have processed on this mob.

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

@@ -428,7 +428,7 @@
 
 /mob/living/carbon/human/show_inv(mob/user)
 	user.set_machine(src)
-	var/has_breathable_mask = istype(wear_mask, /obj/item/clothing/mask)
+	var/has_breathable_mask = istype(wear_mask, /obj/item/clothing/mask) || get_organ_slot("breathing_tube")
 	var/list/obscured = check_obscured_slots()
 
 	var/dat = {"<table>

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

@@ -151,7 +151,7 @@
 			update_hair()	//rebuild hair
 			update_fhair()
 			update_head_accessory()
-		if(internal)
+		if(internal && !get_organ_slot("breathing_tube"))
 			internal = null
 			update_internals_hud_icon(0)
 		wear_mask_update(I, toggle_off = FALSE)

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

@@ -301,9 +301,10 @@
 		var/null_internals = 0      //internals are invalid, therefore turn them off
 		var/skip_contents_check = 0 //rigsuit snowflake, oxygen tanks aren't stored inside the mob, so the 'contents.Find' check has to be skipped.
 
-		if(!(wear_mask && wear_mask.flags & AIRTIGHT)) //if NOT (wear_mask AND wear_mask.flags CONTAIN AIRTIGHT)
-			if(!(head && head.flags & AIRTIGHT)) //if NOT (head AND head.flags CONTAIN AIRTIGHT)
-				null_internals = 1 //not wearing a mask or suitable helmet
+		if(!get_organ_slot("breathing_tube"))
+			if(!(wear_mask && wear_mask.flags & AIRTIGHT)) //if NOT (wear_mask AND wear_mask.flags CONTAIN AIRTIGHT)
+				if(!(head && head.flags & AIRTIGHT)) //if NOT (head AND head.flags CONTAIN AIRTIGHT)
+					null_internals = 1 //not wearing a mask or suitable helmet
 
 		if(istype(back, /obj/item/weapon/rig)) //wearing a rigsuit
 			var/obj/item/weapon/rig/rig = back //needs to be typecasted because this doesn't use get_rig() for some reason

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

@@ -183,9 +183,10 @@
 	if(internal)
 		if(internal.loc != src)
 			internal = null
-		if(!wear_mask || !(wear_mask.flags & AIRTIGHT)) //not wearing mask or non-breath mask
-			if(!head || !(head.flags & AIRTIGHT)) //not wearing helmet or non-breath helmet
-				internal = null //turn off internals
+		if(!get_organ_slot("breathing_tube"))
+			if(!wear_mask || !(wear_mask.flags & AIRTIGHT)) //not wearing mask or non-breath mask
+				if(!head || !(head.flags & AIRTIGHT)) //not wearing helmet or non-breath helmet
+					internal = null //turn off internals
 
 		if(internal)
 			update_internals_hud_icon(1)

code/modules/mob/mob_grab.dm

@@ -167,9 +167,11 @@
 
 */
 
+	var/breathing_tube = affecting.get_organ_slot("breathing_tube")
+
 	if(state >= GRAB_NECK)
 		affecting.Stun(5)  //It will hamper your voice, being choked and all.
-		if(isliving(affecting))
+		if(isliving(affecting) && !breathing_tube)
 			var/mob/living/L = affecting
 			L.adjustOxyLoss(1)
 
@@ -177,7 +179,8 @@
 		//affecting.apply_effect(STUTTER, 5) //would do this, but affecting isn't declared as mob/living for some stupid reason.
 		affecting.Stuttering(5) //It will hamper your voice, being choked and all.
 		affecting.Weaken(5)	//Should keep you down unless you get help.
-		affecting.AdjustLoseBreath(2, bound_lower = 0, bound_upper = 3)
+		if(!breathing_tube)
+			affecting.AdjustLoseBreath(2, bound_lower = 0, bound_upper = 3)
 
 	adjust_position()
 
@@ -290,7 +293,8 @@
 		msg_admin_attack("[key_name(assailant)] strangled (kill intent) [key_name(affecting)]")
 
 		assailant.next_move = world.time + 10
-		affecting.AdjustLoseBreath(1)
+		if(!affecting.get_organ_slot("breathing_tube"))
+			affecting.AdjustLoseBreath(1)
 		affecting.setDir(WEST)
 	adjust_position()
 

code/modules/research/designs/medical_designs.dm

@@ -260,6 +260,17 @@
 	build_path = /obj/item/organ/internal/cyberimp/eyes/shield
 	category = list("Misc", "Medical")
 
+/datum/design/cyberimp_breather
+	name = "Breathing Tube Implant"
+	desc = "This simple implant adds an internals connector to your back, allowing you to use internals without a mask and protecting you from being choked."
+	id = "ci-breather"
+	req_tech = list("materials" = 2, "biotech" = 3)
+	build_type = PROTOLATHE | MECHFAB
+	construction_time = 35
+	materials = list(MAT_METAL = 600, MAT_GLASS = 250)
+	build_path = /obj/item/organ/internal/cyberimp/mouth/breathing_tube
+	category = list("Misc", "Medical Designs")
+
 /datum/design/cyberimp_medical_hud
 	name = "Medical HUD implant"
 	desc = "These cybernetic eyes will display a medical HUD over everything you see. Wiggle eyes to control."

code/modules/surgery/organs/augments_internal.dm

@@ -144,6 +144,24 @@
 	spawn(90 / severity)
 		crit_fail = 0
 
+
+//[[[[MOUTH]]]]
+/obj/item/organ/internal/cyberimp/mouth
+	parent_organ = "mouth"
+
+/obj/item/organ/internal/cyberimp/mouth/breathing_tube
+	name = "breathing tube implant"
+	desc = "This simple implant adds an internals connector to your back, allowing you to use internals without a mask and protecting you from being choked."
+	icon_state = "implant_mask"
+	slot = "breathing_tube"
+	w_class = WEIGHT_CLASS_TINY
+	origin_tech = "materials=2;biotech=3"
+
+/obj/item/organ/internal/cyberimp/mouth/breathing_tube/emp_act(severity)
+	if(prob(60/severity) && owner)
+		to_chat(owner, "<span class='warning'>Your breathing tube suddenly closes!</span>")
+		owner.AdjustLoseBreath(2)
+
 /obj/item/organ/internal/cyberimp/brain/clown_voice
 	name = "Comical implant"
 	desc = "<span class='sans'>Uh oh.</span>"

code/modules/surgery/organs/helpers.dm

@@ -30,9 +30,7 @@
 	return returnorg
 
 /mob/living/carbon/get_organ_slot(slot)
-	for(var/obj/item/organ/internal/O in internal_organs)
-		if(slot == O.slot)
-			return O
+	return internal_organs_slot[slot]
 
 /mob/living/carbon/get_int_organ_tag(tag)
 	for(var/obj/item/organ/internal/O in internal_organs)

code/modules/surgery/organs/organ_internal.dm

@@ -7,6 +7,7 @@
 	throwforce = 0
 	var/zone = "chest"
 	var/slot
+	// DO NOT add slots with matching names to different zones - it will break internal_organs_slot list!
 	vital = 0
 	var/non_primary = 0
 
@@ -29,6 +30,7 @@
 	owner = M
 
 	M.internal_organs |= src
+	M.internal_organs_slot[slot] = src
 	var/obj/item/organ/external/parent
 	if(istype(M, /mob/living/carbon/human))
 		var/mob/living/carbon/human/H = M
@@ -52,6 +54,8 @@
 	owner = null
 	if(M)
 		M.internal_organs -= src
+		if(M.internal_organs_slot[slot] == src)
+			M.internal_organs_slot.Remove(slot)
 		if(vital && !special)
 			if(M.stat != DEAD)//safety check!
 				M.death()