Fixes does_not_breathe, Toggle breathing is an active power (#2240)

* Fixes does_not_breathe

* Fixes things, Changelings can toggle breathing

* Changelog

code/game/gamemodes/changeling/powers/self_respiration.dm

@@ -2,15 +2,30 @@
 	name = "Self Respiration"
 	desc = "We evolve our body to no longer require drawing oxygen from the atmosphere."
 	helptext = "We will no longer require internals, and we cannot inhale any gas, including harmful ones."
+	ability_icon_state = "ling_toggle_breath"
 	genomecost = 0
-	isVerb = 0
 	verbpath = /mob/proc/changeling_self_respiration
 
 //No breathing required
 /mob/proc/changeling_self_respiration()
+	set category = "Changeling"
+	set name = "Toggle Breathing"
+	set desc = "We choose whether or not to breathe."
+
+	var/datum/changeling/changeling = changeling_power(0,0,100,UNCONSCIOUS)
+	if(!changeling)
+		return 0
+
 	if(istype(src,/mob/living/carbon))
 		var/mob/living/carbon/C = src
-		C.does_not_breathe = 1
-		src << "<span class='notice'>We stop breathing, as we no longer need to.</span>"
-		return 1
+		if(C.suiciding)
+			src << "You're committing suicide, this isn't going to work."
+			return 0
+		if(C.does_not_breathe == 0)
+			C.does_not_breathe = 1
+			src << "<span class='notice'>We stop breathing, as we no longer need to.</span>"
+			return 1
+		else
+			C.does_not_breathe = 0
+			src << "<span class='notice'>We resume breathing, as we now need to again.</span>"
 	return 0

code/game/verbs/suicide.dm

@@ -27,6 +27,7 @@
 			src << "You can't commit suicide whilst restrained! ((You can type Ghost instead however.))"
 			return
 		suiciding = 1
+		does_not_breathe = 0			//Prevents ling-suicide zombies, or something
 		var/obj/item/held_item = get_active_hand()
 		if(held_item)
 			var/damagetype = held_item.suicide_act(src)

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

@@ -7,7 +7,7 @@
 
 /mob/living/carbon/proc/breathe()
 	//if(istype(loc, /obj/machinery/atmospherics/unary/cryo_cell)) return
-	if(!should_have_organ(O_LUNGS) || does_not_breathe) return
+	if(!should_have_organ(O_LUNGS)) return
 
 	var/datum/gas_mixture/breath = null
 

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

@@ -327,6 +327,11 @@
 	if(status_flags & GODMODE)
 		return
 
+	if(does_not_breathe)
+		failed_last_breath = 0
+		adjustOxyLoss(-5)
+		return
+
 	if(!breath || (breath.total_moles == 0) || suiciding)
 		failed_last_breath = 1
 		if(suiciding)
@@ -1184,10 +1189,10 @@
 //				if(resting || lying || sleeping)		rest.icon_state = "rest1"
 //				else									rest.icon_state = "rest0"
 		if(toxin)
-			if(hal_screwyhud == 4 || phoron_alert)	toxin.icon_state = "tox1"
+			if(hal_screwyhud == 4 || (phoron_alert && !does_not_breathe))	toxin.icon_state = "tox1"
 			else									toxin.icon_state = "tox0"
 		if(oxygen)
-			if(hal_screwyhud == 3 || oxygen_alert)	oxygen.icon_state = "oxy1"
+			if(hal_screwyhud == 3 || (oxygen_alert && !does_not_breathe))	oxygen.icon_state = "oxy1"
 			else									oxygen.icon_state = "oxy0"
 		if(fire)
 			if(fire_alert)							fire.icon_state = "fire[fire_alert]" //fire_alert is either 0 if no alert, 1 for cold and 2 for heat.