Merge pull request #10242 from Ghommie/Ghommie-cit483

Ports "Refactors can_see_reagents"

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

@@ -974,3 +974,14 @@
 	if(mood)
 		if(mood.sanity < SANITY_UNSTABLE)
 			return TRUE
+
+/mob/living/carbon/can_see_reagents()
+	. = ..()
+	if(.) //No need to run through all of this if it's already true.
+		return
+	if(isclothing(head))
+		var/obj/item/clothing/H = head
+		if(H.clothing_flags & SCAN_REAGENTS)
+			return TRUE
+	if(isclothing(wear_mask) && (wear_mask.clothing_flags & SCAN_REAGENTS))
+		return TRUE

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

@@ -118,7 +118,8 @@
 
 /mob/living/carbon/human/can_use_guns(obj/item/G)
 	. = ..()
-
+	if(!.)
+		return
 	if(G.trigger_guard == TRIGGER_GUARD_NORMAL)
 		if(src.dna.check_mutation(HULK))
 			to_chat(src, "<span class='warning'>Your meaty finger is much too large for the trigger guard!</span>")
@@ -131,7 +132,12 @@
 			to_chat(src, "<span class='warning'>Use of ranged weaponry would bring dishonor to the clan.</span>")
 			return FALSE
 
-	return .
+/mob/living/carbon/human/can_see_reagents()
+	. = ..()
+	if(.) //No need to run through all of this if it's already true.
+		return
+	if(isclothing(glasses) && (glasses.clothing_flags & SCAN_REAGENTS))
+		return TRUE
 
 /*
 /mob/living/carbon/human/transfer_blood_dna(list/blood_dna)

code/modules/mob/living/simple_animal/friendly/drone/_drone.dm

@@ -279,3 +279,12 @@
 
 /mob/living/simple_animal/drone/electrocute_act(shock_damage, obj/source, siemens_coeff = 1, safety = 0, tesla_shock = 0, illusion = 0, stun = TRUE)
 	return 0 //So they don't die trying to fix wiring
+
+/mob/living/simple_animal/drone/can_see_reagents()
+	. = ..()
+	if(.)
+		return
+	if(isclothing(head))
+		var/obj/item/clothing/H = head
+		if(H.clothing_flags & SCAN_REAGENTS)
+			return TRUE