Flash rebalance.

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

@@ -11,10 +11,79 @@
 	origin_tech = list(TECH_MAGNET = 2, TECH_COMBAT = 1)
 
 	var/times_used = 0 //Number of times it's been used.
-	var/broken = 0     //Is the flash burnt out?
+	var/broken = FALSE     //Is the flash burnt out?
 	var/last_used = 0 //last world.time it was used.
 	var/max_flashes = 10 // How many times the flash can be used before needing to self recharge.
 	var/halloss_per_flash = 30
+	var/break_mod = 3 // The percent to break increased by every use on the flash.
+
+	var/can_break = TRUE // Can the flash break?
+	var/can_repair = FALSE // Can you repair the flash?
+	var/repairing = FALSE // Are we repairing right now?
+
+	var/safe_flashes = 2 // How many flashes are kept in 1% breakchance?
+
+	var/charge_only = FALSE // Does the flash run purely on charge?
+
+	var/base_icon = "flash"
+
+	var/obj/item/weapon/cell/power_supply //What type of power cell this uses
+	var/charge_cost = 30 //How much energy is needed to flash.
+	var/use_external_power = FALSE // Do we use charge from an external source?
+
+	var/cell_type = /obj/item/weapon/cell/device
+
+/obj/item/device/flash/Initialize()
+	..()
+	power_supply = new cell_type(src)
+
+/obj/item/device/flash/attackby(var/obj/item/W, var/mob/user)
+	if(W.is_screwdriver() && broken)
+		if(repairing)
+			to_chat(user, "<span class='notice'>\The [src] is already being repaired!</span>")
+			return
+		user.visible_message("<span class='notice'>\The [user] starts trying to repair \the [src]'s bulb.</span>")
+		repairing = TRUE
+		if(do_after(user, (40 SECONDS + rand(0, 20 SECONDS)) * W.toolspeed) && can_repair)
+			if(prob(30))
+				user.visible_message("<span class='notice'>\The [user] successfully repairs \the [src]!</span>")
+				broken = FALSE
+				update_icon()
+			playsound(src.loc, W.usesound, 50, 1)
+		else
+			user.visible_message("<span class='notice'>\The [user] fails to repair \the [src].</span>")
+		repairing = FALSE
+	else
+		..()
+
+/obj/item/device/flash/update_icon()
+	var/obj/item/weapon/cell/battery = power_supply
+
+	if(use_external_power)
+		battery = get_external_power_supply()
+
+	if(broken || !battery || battery.charge < charge_cost)
+		icon_state = "[base_icon]burnt"
+	else
+		icon_state = "[base_icon]"
+	return
+
+/obj/item/device/flash/get_cell()
+	return power_supply
+
+/obj/item/device/flash/proc/get_external_power_supply()
+	if(isrobot(src.loc))
+		var/mob/living/silicon/robot/R = src.loc
+		return R.cell
+	if(istype(src.loc, /obj/item/rig_module))
+		var/obj/item/rig_module/module = src.loc
+		if(module.holder && module.holder.wearer)
+			var/mob/living/carbon/human/H = module.holder.wearer
+			if(istype(H) && H.back)
+				var/obj/item/weapon/rig/suit = H.back
+				if(istype(suit))
+					return suit.cell
+	return null
 
 /obj/item/device/flash/proc/clown_check(var/mob/user)
 	if(user && (CLUMSY in user.mutations) && prob(50))
@@ -29,31 +98,53 @@
 	for(var/i=0, i < max_flashes, i++)
 		if(last_used + 10 SECONDS > world.time)
 			break
+
+		else if(use_external_power)
+			var/obj/item/weapon/cell/external = get_external_power_supply()
+			if(!external || !external.use(charge_cost)) //Take power from the borg or rig!
+				break
+
+		else if(!power_supply || !power_supply.checked_use(charge_cost))
+			break
+
 		last_used += 10 SECONDS
 		times_used--
+
 	last_used = world.time
 	times_used = max(0,round(times_used)) //sanity
+	update_icon()
 
 // Returns true if the device can flash.
 /obj/item/device/flash/proc/check_capacitor(var/mob/user)
 	//spamming the flash before it's fully charged (60 seconds) increases the chance of it breaking
 	//It will never break on the first use.
-	if(times_used <= max_flashes)
+	var/obj/item/weapon/cell/battery = power_supply
+
+	if(use_external_power)
+		battery = get_external_power_supply()
+
+	if(times_used <= max_flashes && battery && battery.checked_use(charge_cost))
 		last_used = world.time
-		if(prob( round(times_used / 2) ))	//if you use it 10 times in a minute it has a 5% chance to break.
-			broken = 1
+		if(prob( max(0, times_used - safe_flashes) * 2 + (times_used >= 1) ) && can_break)	//if you use it 10 times in a minute it has a 30% chance to break.
+			broken = TRUE
 			if(user)
 				to_chat(user, "<span class='warning'>The bulb has burnt out!</span>")
-			icon_state = "flashburnt"
+			update_icon()
 			return FALSE
 		else
 			times_used++
+			update_icon()
 			return TRUE
-	else	//can only use it 10 times a minute
+	else if(!charge_only)	//can only use it 10 times a minute, unless it runs purely on charge.
 		if(user)
+			update_icon()
 			to_chat(user, "<span class='warning'><i>click</i></span>")
 			playsound(src.loc, 'sound/weapons/empty.ogg', 80, 1)
 		return FALSE
+	else if(battery && battery.checked_use(charge_cost + (round(charge_cost / 4) * max(0, times_used - max_flashes)))) // Using over your maximum flashes starts taking more charge per added flash.
+		times_used++
+		update_icon()
+		return TRUE
 
 //attack_as_weapon
 /obj/item/device/flash/attack(mob/living/M, mob/living/user, var/target_zone)
@@ -206,6 +297,8 @@
 	desc = "When a problem arises, SCIENCE is the solution."
 	icon_state = "sflash"
 	origin_tech = list(TECH_MAGNET = 2, TECH_COMBAT = 1)
+	base_icon = "sflash"
+	can_repair = FALSE
 
 //attack_as_weapon
 /obj/item/device/flash/synthetic/attack(mob/living/M, mob/living/user, var/target_zone)
@@ -213,11 +306,17 @@
 	if(!broken)
 		broken = 1
 		to_chat(user, "<span class='warning'>The bulb has burnt out!</span>")
-		icon_state = "flashburnt"
+		update_icon()
 
 /obj/item/device/flash/synthetic/attack_self(mob/living/carbon/user as mob, flag = 0, emp = 0)
 	..()
 	if(!broken)
 		broken = 1
 		to_chat(user, "<span class='warning'>The bulb has burnt out!</span>")
-		icon_state = "flashburnt"
+		update_icon()
+
+/obj/item/device/flash/robot
+	name = "mounted flash"
+	can_break = FALSE
+	use_external_power = TRUE
+	charge_only = TRUE