Zombies upgrade (#17366)

* step 0

* sdad

* asdfsad

* safsad

* actual sprites for the bull from whitewolftamer

* Apply suggestions from code review

Co-authored-by: Cody Brittain <cbrittain10@yahoo.com>

* Update html/changelogs/fluffyghost-zombieupgrade.yml

Co-authored-by: Cody Brittain <cbrittain10@yahoo.com>

* sisyphus

---------

Co-authored-by: Cody Brittain <cbrittain10@yahoo.com>

code/game/objects/items.dm

@@ -227,7 +227,7 @@
 
 	// Its vital that if you make new power tools or new recipies that you include this
 
-/obj/item/Initialize()
+/obj/item/Initialize(mapload, ...)
 	. = ..()
 	if(islist(armor))
 		for(var/type in armor)

code/game/objects/items/weapons/grenades/chem_grenade.dm

@@ -393,3 +393,31 @@
 	beakers += B1
 	beakers += B2
 	icon_state = initial(icon_state) +"_locked"
+
+///Zombie-producing grenade
+/obj/item/grenade/chem_grenade/trioxin
+	name = "trioxin grenade"
+	desc = "Concentrated trioxin. The lab really cooked for this one."
+	stage = 2
+	path = 1
+
+/obj/item/grenade/chem_grenade/trioxin/Initialize()
+	. = ..()
+	var/obj/item/reagent_containers/glass/beaker/large/B1 = new(src)
+	var/obj/item/reagent_containers/glass/beaker/large/B2 = new(src)
+
+	B1.reagents.add_reagent(/singleton/reagent/phosphorus, 40)
+	B1.reagents.add_reagent(/singleton/reagent/potassium, 40)
+	B1.reagents.add_reagent(/singleton/reagent/toxin/trioxin, 40)
+	B2.reagents.add_reagent(/singleton/reagent/sugar, 40)
+	B2.reagents.add_reagent(/singleton/reagent/toxin/trioxin, 80)
+
+	detonator = new/obj/item/device/assembly_holder/timer_igniter(src)
+
+	var/obj/item/device/assembly/timer/tmr = detonator.a_left
+	tmr.time = 2
+	detonator.name = "[initial(detonator.name)] ([tmr.time] secs)"
+
+	beakers += B1
+	beakers += B2
+	icon_state = initial(icon_state) +"_locked"