Add shrapnel to frag grenades

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

@@ -39,7 +39,7 @@
 /obj/item/grenade/gluon/prime()
 	update_mob()
 	playsound(loc, 'sound/effects/empulse.ogg', 50, 1)
-	for(var/turf/T in view(range,loc))
+	for(var/turf/T in view(range, loc))
 		if(isfloorturf(T))
 			var/turf/simulated/F = T
 			F.MakeSlippery(TURF_WET_PERMAFROST)

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

@@ -4,8 +4,47 @@
 	icon_state = "frag"
 	item_state = "flashbang"
 	origin_tech = "materials=3;magnets=4"
+	var/range = 5
+	var/max_shrapnel = 4
+	var/embed_prob = 100 //reduced by armor
+	var/embedded_type = /obj/item/embedded/shrapnel
 
 /obj/item/grenade/frag/prime()
 	update_mob()
-	explosion(loc, 0, 3, 5, breach = FALSE)
-	qdel(src)
+	var/turf/epicenter = get_turf(src)
+	for(var/mob/living/carbon/human/H in epicenter)
+		if(H.resting) //grenade is jumped on but get real fucked up
+			embed_shrapnel(H, max_shrapnel)
+			range = 1
+	explosion(loc, 0, 1, range, breach = FALSE)
+	for(var/turf/T in view(range, loc))
+		for(var/mob/living/carbon/human/H in T)
+			var/shrapnel_amount = max_shrapnel - T.Distance(epicenter)
+			if(shrapnel_amount > 0)
+				embed_shrapnel(H, shrapnel_amount)
+	qdel(src)
+
+/obj/item/grenade/frag/proc/embed_shrapnel(mob/living/carbon/human/H, amount)
+	for(var/i = 0, i < amount, i++)
+		if(prob(embed_prob - H.getarmor(null, "bomb")))
+			var/obj/item/embedded/S = new embedded_type(src)
+			H.hitby(S, skipcatch = 1)
+			S.throwforce = 1
+			S.throw_speed = 1
+			S.sharp = FALSE
+		else
+			to_chat(H, "<span class='warning'>Shrapnel bounces off your armor!</span>")
+
+/obj/item/embedded/shrapnel
+	name = "shrapnel"
+	icon = 'icons/obj/shards.dmi'
+	throwforce = 10
+	throw_speed =  EMBED_THROWSPEED_THRESHOLD
+	embed_chance = 100
+	embedded_fall_chance = 0
+	w_class = WEIGHT_CLASS_SMALL
+	sharp = TRUE
+	hitsound = 'sound/weapons/pierce.ogg'
+
+/obj/item/embedded/shrapnel/New()
+	icon_state = pick("shrapnel1", "shrapnel2", "shrapnel3")