[MIRROR] Exposure fix (#687)

* Fix chemical exposure (#53491)

* Exposure fix

Co-authored-by: TemporalOroboros <TemporalOroboros@gmail.com>

code/modules/reagents/chemistry/reagents.dm

@@ -95,34 +95,31 @@ GLOBAL_LIST_INIT(name2reagent, build_name2reagent())
 /datum/reagent/proc/expose_atom(atom/exposed_atom, reac_volume)
 	SHOULD_CALL_PARENT(TRUE)
 
-	SEND_SIGNAL(src, COMSIG_REAGENT_EXPOSE_ATOM, exposed_atom, reac_volume)
-	SEND_SIGNAL(exposed_atom, COMSIG_ATOM_EXPOSE_REAGENT, src, reac_volume)
-	return TRUE
+	. = 0
+	. |= SEND_SIGNAL(src, COMSIG_REAGENT_EXPOSE_ATOM, exposed_atom, reac_volume)
+	. |= SEND_SIGNAL(exposed_atom, COMSIG_ATOM_EXPOSE_REAGENT, src, reac_volume)
 
 /// Applies this reagent to a [/mob/living]
 /datum/reagent/proc/expose_mob(mob/living/exposed_mob, methods=TOUCH, reac_volume, show_message = TRUE, touch_protection = 0)
 	SHOULD_CALL_PARENT(TRUE)
 
-	SEND_SIGNAL(src, COMSIG_REAGENT_EXPOSE_MOB, exposed_mob, methods, reac_volume, show_message, touch_protection)
+	. = SEND_SIGNAL(src, COMSIG_REAGENT_EXPOSE_MOB, exposed_mob, methods, reac_volume, show_message, touch_protection)
 	if((methods & penetrates_skin) && exposed_mob.reagents) //smoke, foam, spray
 		var/amount = round(reac_volume*clamp((1 - touch_protection), 0, 1), 0.1)
 		if(amount >= 0.5)
 			exposed_mob.reagents.add_reagent(type, amount)
-	return TRUE
 
 /// Applies this reagent to an [/obj]
 /datum/reagent/proc/expose_obj(obj/exposed_obj, reac_volume)
 	SHOULD_CALL_PARENT(TRUE)
 
-	SEND_SIGNAL(src, COMSIG_REAGENT_EXPOSE_OBJ, exposed_obj, reac_volume)
-	return TRUE
+	return SEND_SIGNAL(src, COMSIG_REAGENT_EXPOSE_OBJ, exposed_obj, reac_volume)
 
 /// Applies this reagent to a [/turf]
 /datum/reagent/proc/expose_turf(turf/exposed_turf, reac_volume)
 	SHOULD_CALL_PARENT(TRUE)
 
-	SEND_SIGNAL(src, COMSIG_REAGENT_EXPOSE_TURF, exposed_turf, reac_volume)
-	return TRUE
+	return SEND_SIGNAL(src, COMSIG_REAGENT_EXPOSE_TURF, exposed_turf, reac_volume)
 
 /// Called from [/datum/reagents/proc/metabolize]
 /datum/reagent/proc/on_mob_life(mob/living/carbon/M)

code/modules/reagents/chemistry/reagents/cat2_medicine_reagents.dm

@@ -414,12 +414,12 @@
 /datum/reagent/medicine/c2/synthflesh/expose_mob(mob/living/exposed_mob, methods=TOUCH, reac_volume, show_message = TRUE)
 	. = ..()
 	if(!iscarbon(exposed_mob))
-		return TRUE
+		return
 	var/mob/living/carbon/carbies = exposed_mob
 	if(carbies.stat == DEAD)
 		show_message = 0
 	if(!(methods & (PATCH|TOUCH|VAPOR)))
-		return TRUE
+		return
 	var/harmies = min(carbies.getBruteLoss(),carbies.adjustBruteLoss(-1.25 * reac_volume)*-1)
 	var/burnies = min(carbies.getFireLoss(),carbies.adjustFireLoss(-1.25 * reac_volume)*-1)
 	for(var/i in carbies.all_wounds)
@@ -432,7 +432,6 @@
 	if(HAS_TRAIT_FROM(exposed_mob, TRAIT_HUSK, "burn") && carbies.getFireLoss() < THRESHOLD_UNHUSK && (carbies.reagents.get_reagent_amount(/datum/reagent/medicine/c2/synthflesh) + reac_volume >= 100))
 		carbies.cure_husk("burn")
 		carbies.visible_message("<span class='nicegreen'>A rubbery liquid coats [carbies]'s burns. [carbies] looks a lot healthier!") //we're avoiding using the phrases "burnt flesh" and "burnt skin" here because carbies could be a skeleton or a golem or something
-	return TRUE
 
 /******ORGAN HEALING******/
 /*Suffix: -rite*/

code/modules/reagents/chemistry/reagents/food_reagents.dm

@@ -158,7 +158,6 @@
 		addtimer(CALLBACK(exposed_mob, /mob/living/proc/unfry_mob), 3)
 	if(FryLoss)
 		exposed_mob.adjustFireLoss(FryLoss)
-	return TRUE
 
 /datum/reagent/consumable/cooking_oil/expose_turf(turf/open/exposed_turf, reac_volume)
 	. = ..()

code/modules/reagents/chemistry/reagents/other_reagents.dm

@@ -726,7 +726,7 @@
 /datum/reagent/oxygen/expose_obj(obj/exposed_obj, reac_volume)
 	. = ..()
 	if((!exposed_obj) || (!reac_volume))
-		return 0
+		return
 	var/temp = holder ? holder.chem_temp : T20C
 	exposed_obj.atmos_spawn_air("o2=[reac_volume/2];TEMP=[temp]")
 
@@ -763,7 +763,7 @@
 /datum/reagent/nitrogen/expose_obj(obj/exposed_obj, reac_volume)
 	. = ..()
 	if((!exposed_obj) || (!reac_volume))
-		return 0
+		return
 	var/temp = holder ? holder.chem_temp : T20C
 	exposed_obj.atmos_spawn_air("n2=[reac_volume/2];TEMP=[temp]")
 
@@ -1271,7 +1271,7 @@
 /datum/reagent/carbondioxide/expose_obj(obj/exposed_obj, reac_volume)
 	. = ..()
 	if((!exposed_obj) || (!reac_volume))
-		return 0
+		return
 	var/temp = holder ? holder.chem_temp : T20C
 	exposed_obj.atmos_spawn_air("co2=[reac_volume/5];TEMP=[temp]")
 
@@ -1292,7 +1292,7 @@
 /datum/reagent/nitrous_oxide/expose_obj(obj/exposed_obj, reac_volume)
 	. = ..()
 	if((!exposed_obj) || (!reac_volume))
-		return 0
+		return
 	var/temp = holder ? holder.chem_temp : T20C
 	exposed_obj.atmos_spawn_air("n2o=[reac_volume/5];TEMP=[temp]")
 

code/modules/reagents/chemistry/reagents/toxin_reagents.dm

@@ -90,7 +90,7 @@
 /datum/reagent/toxin/plasma/expose_obj(obj/exposed_obj, reac_volume)
 	. = ..()
 	if((!exposed_obj) || (!reac_volume))
-		return 0
+		return
 	var/temp = holder ? holder.chem_temp : T20C
 	if(temp >= LIQUID_PLASMA_BP)
 		exposed_obj.atmos_spawn_air("plasma=[reac_volume];TEMP=[temp]")