Ports weapons cleaving and reaching features from polaris (#3969)

-axes, chainswords and longswords can now cleave, hitting targets around the user, ported from polaris
-added support for melee weapons that can hit targets two titles away, as well ported from polaris

code/game/objects/items/weapons/material/swords.dm

@@ -37,6 +37,7 @@
 	contained_sprite = 1
 	slot_flags = SLOT_BELT
 	attack_verb = list("attacked", "stabbed", "prodded", "poked", "lunged")
+	sharp = 0
 
 /obj/item/weapon/material/sword/longsword
 	name = "longsword"
@@ -45,6 +46,11 @@
 	item_state = "claymore"
 	slot_flags = SLOT_BELT | SLOT_BACK
 
+/obj/item/weapon/material/sword/longsword/pre_attack(var/mob/living/target, var/mob/living/user)
+	if(istype(target))
+		cleave(user, target)
+	..()
+
 /obj/item/weapon/material/sword/trench
 	name = "trench knife"
 	desc = "A military knife used to slash and stab enemies in close quarters."
@@ -77,6 +83,11 @@
 	attack_verb = list("attacked", "chopped", "cleaved", "torn", "cut")
 	applies_material_colour = 0
 
+/obj/item/weapon/material/sword/axe/pre_attack(var/mob/living/target, var/mob/living/user)
+	if(istype(target))
+		cleave(user, target)
+	..()
+
 /obj/item/weapon/material/sword/khopesh
 	name = "khopesh"
 	desc = "An ancient sword shapped like a sickle."

code/game/objects/items/weapons/material/twohanded.dm

@@ -160,7 +160,7 @@
 	if (ismob(loc))
 		var/mob/living/our_mob = loc
 		our_mob.remove_from_mob(src)
-		
+
 	qdel(src)
 
 /obj/item/weapon/material/twohanded/offhand/update_icon()
@@ -197,6 +197,11 @@
 			var/obj/effect/plant/P = A
 			P.die_off()
 
+/obj/item/weapon/material/twohanded/fireaxe/pre_attack(var/mob/living/target, var/mob/living/user)
+	if(istype(target))
+		cleave(user, target)
+	..()
+
 //spears, bay edition
 /obj/item/weapon/material/twohanded/spear
 	icon_state = "spearglass0"
@@ -211,7 +216,7 @@
 	thrown_force_divisor = 1.5 // 20 when thrown with weight 15 (glass)
 	throw_speed = 3
 	edge = 1
-	sharp = 1
+	sharp = 0
 	hitsound = 'sound/weapons/bladeslice.ogg'
 	attack_verb = list("attacked", "poked", "jabbed", "torn", "gored")
 	default_material = "glass"