Recharger QoL Tweaks (#3826)

changes:

Rechargers now briefly show a progress bar showing the current charge level of the device currently charging.
Examining a recharger will now specify what is in the charger.
Atoms can now mark themselves as requiring an icon update on initialize instead of overriding Initialize() just to call update_icon().
Charger code is now slightly more modular, using proc/get_cell() to get a ref to the power cell instead of hard-coded if-else chains for each supported type.

code/modules/projectiles/guns/energy.dm

@@ -4,6 +4,7 @@
 	icon_state = "energy"
 	fire_sound = 'sound/weapons/Taser.ogg'
 	fire_sound_text = "laser blast"
+	update_icon_on_init = TRUE
 
 	var/obj/item/weapon/cell/power_supply //What type of power cell this uses
 	var/charge_cost = 200 //How much energy is needed to fire.
@@ -34,7 +35,10 @@
 
 /obj/item/weapon/gun/energy/emp_act(severity)
 	..()
-	update_icon()
+	queue_icon_update()
+
+/obj/item/weapon/gun/energy/get_cell()
+	return power_supply
 
 /obj/item/weapon/gun/energy/Initialize()
 	. = ..()
@@ -42,7 +46,6 @@
 		power_supply = new cell_type(src)
 	else
 		power_supply = new /obj/item/weapon/cell/device/variable(src, max_shots*charge_cost)
-	update_icon()
 
 /obj/item/weapon/gun/energy/Destroy()
 	QDEL_NULL(power_supply)

code/modules/projectiles/guns/energy/magic.dm

@@ -187,6 +187,10 @@ obj/item/weapon/gun/energy/staff/focus/attack_self(mob/living/user as mob)
 	projectile_type = /obj/item/projectile/magic
 	origin_tech = list(TECH_COMBAT = 6, TECH_MAGNET = 5, TECH_BLUESPACE = 6)
 	charge_meter = 0
+	charge_failure_message = null
+
+/obj/item/weapon/gun/energy/wand/get_cell()
+	return DEVICE_NO_CELL
 
 /obj/item/weapon/gun/energy/wand/handle_click_empty(mob/user = null)
 	if (user)

code/modules/projectiles/guns/energy/nuclear.dm

@@ -40,6 +40,7 @@
 	modifystate = null
 	var/reliability = 95
 	turret_sprite_set = "nuclear"
+	charge_failure_message = "'s charging socket was removed to make room for a minaturized reactor."
 
 	firemodes = list(
 		list(mode_name="stun", projectile_type=/obj/item/projectile/beam/stun, fire_sound='sound/weapons/Taser.ogg'),
@@ -48,6 +49,8 @@
 
 	var/lightfail = 0
 
+/obj/item/weapon/gun/energy/gun/nuclear/get_cell()
+	return DEVICE_NO_CELL
 
 /obj/item/weapon/gun/energy/gun/nuclear/proc/failcheck()
 	lightfail = 0

code/modules/projectiles/guns/energy/stun.dm

@@ -50,6 +50,10 @@
 	charge_meter = 0
 	can_turret = 1
 	turret_sprite_set = "crossbow"
+	charge_failure_message = "'s charging socket was removed to make room for a minaturized reactor."
+
+/obj/item/weapon/gun/energy/crossbow/get_cell()
+	return DEVICE_NO_CELL
 
 /obj/item/weapon/gun/energy/crossbow/ninja
 	name = "energy dart thrower"