firebreath change + update to tg genetics + calc patch

code/game/objects/items/devices/scanners.dm

@@ -786,7 +786,7 @@ SLIME SCANNER
 	item_state = "healthanalyzer"
 	lefthand_file = 'icons/mob/inhands/equipment/medical_lefthand.dmi'
 	righthand_file = 'icons/mob/inhands/equipment/medical_righthand.dmi'
-	desc = "A hand-held scanner able to swiftly scan someone for potential mutations. Hold near a DNA console to update from their database."
+	desc = "A hand-held scanner for analyzing someones gene sequence on the fly. Hold near a DNA console to update the internal database."
 	flags_1 = CONDUCT_1
 	item_flags = NOBLUDGEON
 	slot_flags = ITEM_SLOT_BELT
@@ -796,13 +796,25 @@ SLIME SCANNER
 	throw_range = 7
 	materials = list(MAT_METAL=200)
 	var/list/discovered = list() //hit a dna console to update the scanners database
+	var/list/buffer
+	var/ready = TRUE
+	var/cooldown = 200
 
 /obj/item/sequence_scanner/attack(mob/living/M, mob/living/carbon/human/user)
-	user.visible_message("<span class='notice'>[user] has analyzed [M]'s genetic sequence.</span>")
-
 	add_fingerprint(user)
+	if (!HAS_TRAIT(M, TRAIT_RADIMMUNE)) //no scanning if its a husk or DNA-less Species
+		user.visible_message("<span class='notice'>[user] analyzes [M]'s genetic sequence.</span>", \
+							"<span class='notice'>You analyze [M]'s genetic sequence.</span>")
+		gene_scan(M, user)
 
-	gene_scan(M, user, src)
+	else
+		user.visible_message("<span class='notice'>[user] failed to analyse [M]'s genetic sequence.</span>", "<span class='warning'>[M] has no readable genetic sequence!</span>")
+
+/obj/item/sequence_scanner/attack_self(mob/user)
+	display_sequence(user)
+
+/obj/item/sequence_scanner/attack_self_tk(mob/user)
+	return
 
 /obj/item/sequence_scanner/afterattack(obj/O, mob/user, proximity)
 	. = ..()
@@ -812,28 +824,58 @@ SLIME SCANNER
 	if(istype(O, /obj/machinery/computer/scan_consolenew))
 		var/obj/machinery/computer/scan_consolenew/C = O
 		if(C.stored_research)
-			to_chat(user, "<span class='notice'>[name] database updated.</span>")
+			to_chat(user, "<span class='notice'>[name] linked to central research database.</span>")
 			discovered = C.stored_research.discovered_mutations
 		else
 			to_chat(user,"<span class='warning'>No database to update from.</span>")
 
-/proc/gene_scan(mob/living/carbon/C, mob/living/user, obj/item/sequence_scanner/G)
+/obj/item/sequence_scanner/proc/gene_scan(mob/living/carbon/C, mob/living/user)
 	if(!iscarbon(C) || !C.has_dna())
 		return
-	to_chat(user, "<span class='notice'>[C.name]'s potential mutations.")
-	for(var/A in C.dna.mutation_index)
-		var/datum/mutation/human/HM = GET_INITIALIZED_MUTATION(A)
-		var/mut_name
-		if(G && (A in G.discovered))
-			mut_name = "[HM.name] ([HM.alias])"
-		else
-			mut_name = HM.alias
-		var/temp = GET_GENE_STRING(HM.type, C.dna)
-		var/display
-		for(var/i in 0 to length(temp) / DNA_MUTATION_BLOCKS-1)
-			if(i)
-				display += "-"
-			display += copytext(temp, 1 + i*DNA_MUTATION_BLOCKS, DNA_MUTATION_BLOCKS*(1+i) + 1)
+	buffer = C.dna.mutation_index
+	to_chat(user, "<span class='notice'>Subject [C.name]'s DNA sequence has been saved to buffer.</span>")
+	if(LAZYLEN(buffer))
+		for(var/A in buffer)
+			to_chat(user, "<span class='notice'>[get_display_name(A)]</span>")
 
 
-		to_chat(user, "<span class='boldnotice'>- [mut_name] > [display]</span>")
+/obj/item/sequence_scanner/proc/display_sequence(mob/living/user)
+	if(!LAZYLEN(buffer) || !ready)
+		return
+	var/list/options = list()
+	for(var/A in buffer)
+		options += get_display_name(A)
+
+	var/answer = input(user, "Analyze Potential", "Sequence Analyzer")  as null|anything in sortList(options)
+	if(answer && ready && user.canUseTopic(src, BE_CLOSE, FALSE, NO_TK))
+		var/sequence
+		for(var/A in buffer) //this physically hurts but i dont know what anything else short of an assoc list
+			if(get_display_name(A) == answer)
+				sequence = buffer[A]
+				break
+
+		if(sequence)
+			var/display
+			for(var/i in 0 to length_char(sequence) / DNA_MUTATION_BLOCKS-1)
+				if(i)
+					display += "-"
+				display += copytext_char(sequence, 1 + i*DNA_MUTATION_BLOCKS, DNA_MUTATION_BLOCKS*(1+i) + 1)
+
+			to_chat(user, "<span class='boldnotice'>[display]</span><br>")
+
+		ready = FALSE
+		icon_state = "[icon_state]_recharging"
+		addtimer(CALLBACK(src, .proc/recharge), cooldown, TIMER_UNIQUE)
+
+/obj/item/sequence_scanner/proc/recharge()
+	icon_state = initial(icon_state)
+	ready = TRUE
+
+/obj/item/sequence_scanner/proc/get_display_name(mutation)
+	var/datum/mutation/human/HM = GET_INITIALIZED_MUTATION(mutation)
+	if(!HM)
+		return "ERROR"
+	if(mutation in discovered)
+		return  "[HM.name] ([HM.alias])"
+	else
+		return HM.alias