added new assembled timer-igniter assembly and added that to default chem-grenades

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

@@ -69,17 +69,14 @@
 				path = 1
 				if(beakers.len)
 					user << "\blue You lock the assembly."
-					playsound(src.loc, 'sound/items/Screwdriver.ogg', 25, -3)
 					name = "grenade"
-					icon_state = initial(icon_state) +"_locked"
-					stage = 2
 				else
 //					user << "\red You need to add at least one beaker before locking the assembly."
 					user << "\blue You lock the empty assembly."
-					playsound(src.loc, 'sound/items/Screwdriver.ogg', 25, -3)
 					name = "fake grenade"
-					icon_state = initial(icon_state) +"_locked"
-					stage = 2
+				playsound(src.loc, 'sound/items/Screwdriver.ogg', 25, -3)
+				icon_state = initial(icon_state) +"_locked"
+				stage = 2
 			else if(stage == 2)
 				if(active && prob(95))
 					user << "\red You trigger the assembly!"
@@ -114,8 +111,9 @@
 		if(detonator)
 			usr << "With attached [detonator.name]"
 
-	activate()
+	activate(mob/user as mob)
 		if(active) return
+	
 		if(detonator)
 			if(!isigniter(detonator.a_left))
 				detonator.a_left.activate()
@@ -126,6 +124,11 @@
 		if(active)
 			icon_state = initial(icon_state) + "_active"
 
+			if(user)
+				log_attack("<font color='red'>[user.name] ([user.ckey]) primed \a [src]</font>")
+				log_admin("ATTACK: [user] ([user.ckey]) primed \a [src]")
+				message_admins("ATTACK: [user] ([user.ckey]) primed \a [src]")
+
 		return
 
 	proc/primed(var/primed = 1)
@@ -195,9 +198,11 @@
 		B2.reagents.add_reagent("foaming_agent", 10)
 		B2.reagents.add_reagent("pacid", 10)
 
+		detonator = new/obj/item/device/assembly_holder/timer_igniter(src)
+
 		beakers += B1
 		beakers += B2
-		icon_state = "grenade"
+		icon_state = initial(icon_state) +"_locked"
 
 /obj/item/weapon/grenade/chem_grenade/incendiary
 	name = "Incendiary Grenade"
@@ -214,9 +219,11 @@
 		B2.reagents.add_reagent("plasma", 25)
 		B2.reagents.add_reagent("sacid", 25)
 
+		detonator = new/obj/item/device/assembly_holder/timer_igniter(src)
+
 		beakers += B1
 		beakers += B2
-		icon_state = "grenade"
+		icon_state = initial(icon_state) +"_locked"
 
 /obj/item/weapon/grenade/chem_grenade/cleaner
 	name = "Cleaner Grenade"
@@ -233,6 +240,8 @@
 		B2.reagents.add_reagent("water", 40)
 		B2.reagents.add_reagent("cleaner", 10)
 
+		detonator = new/obj/item/device/assembly_holder/timer_igniter(src)
+
 		beakers += B1
 		beakers += B2
-		icon_state = "grenade"
+		icon_state = initial(icon_state) +"_locked"

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

@@ -16,11 +16,7 @@
 	if((CLUMSY in user.mutations) && prob(50))
 		user << "<span class='warning'>Huh? How does this thing work?</span>"
 
-		log_attack("<font color='red'>[user.name] ([user.ckey]) clumsily primed \a [src]</font>")
-		log_admin("ATTACK: [user] ([user.ckey]) clumsily primed \a [src]")
-		message_admins("ATTACK: [user] ([user.ckey]) clumsily primed \a [src]")
-
-		activate()
+		activate(user)
 		add_fingerprint(user)
 		spawn(5)
 			prime()
@@ -60,11 +56,7 @@
 		if(clown_check(user))
 			user << "<span class='warning'>You prime \the [name]! [det_time/10] seconds!</span>"
 
-			log_attack("<font color='red'>[user.name] ([user.ckey]) primed \a [src].</font>")
-			log_admin("ATTACK: [user] ([user.ckey]) primed \a [src].")
-			message_admins("ATTACK: [user] ([user.ckey]) primed \a [src].")
-
-			activate()
+			activate(user)
 			add_fingerprint(user)
 			if(iscarbon(user))
 				var/mob/living/carbon/C = user
@@ -72,10 +64,15 @@
 	return
 
 
-/obj/item/weapon/grenade/proc/activate()
+/obj/item/weapon/grenade/proc/activate(mob/user as mob)
 	if(active)
 		return
 
+	if(user)
+		log_attack("<font color='red'>[user.name] ([user.ckey]) primed \a [src]</font>")
+		log_admin("ATTACK: [user] ([user.ckey]) primed \a [src]")
+		message_admins("ATTACK: [user] ([user.ckey]) primed \a [src]")
+
 	icon_state = initial(icon_state) + "_active"
 	active = 1
 	playsound(loc, 'sound/weapons/armbomb.ogg', 75, 1, -3)

code/modules/assembly/holder.dm

@@ -196,6 +196,22 @@
 
 
 
+/obj/item/device/assembly_holder/timer_igniter
+	name = "5sec timer-igniter assembly"
 
+	New()
+		..()
 
+		var/obj/item/device/assembly/igniter/ign = new(src)
+		ign.secured = 1
+		ign.holder = src
+		var/obj/item/device/assembly/timer/tmr = new(src)
+		tmr.time=5
+		tmr.secured = 1
+		tmr.holder = src
+		processing_objects.Add(tmr)
+		a_left = tmr
+		a_right = ign
+		secured = 1
+		update_icon()