Adds additional variants of 10mm ammunition. (#5596)

* adds variants of 10mm ammunition

you can shoot people with it

* ones which work

* third time's the charm

* adds the letter 'u'

* makes armor pen values more reasonable

* rebalanced AP

code/modules/projectiles/ammunition/ammo_casings.dm

@@ -27,6 +27,15 @@
 	caliber = "10mm"
 	projectile_type = /obj/item/projectile/bullet/midbullet3
 
+/obj/item/ammo_casing/c10mm/ap
+	projectile_type = /obj/item/projectile/bullet/midbullet3/ap
+
+/obj/item/ammo_casing/c10mm/fire
+	projectile_type = /obj/item/projectile/bullet/midbullet3/fire
+
+/obj/item/ammo_casing/c10mm/hp
+	projectile_type = /obj/item/projectile/bullet/midbullet3/hp
+
 /obj/item/ammo_casing/c9mm
 	desc = "A 9mm bullet casing."
 	caliber = "9mm"

code/modules/projectiles/ammunition/magazines.dm

@@ -180,6 +180,21 @@
 	max_ammo = 8
 	multiple_sprites = 2
 
+/obj/item/ammo_box/magazine/m10mm/fire
+	name = "pistol magazine (10mm incendiary)"
+	desc = "A gun magazine. Loaded with rounds which ignite the target."
+	ammo_type = /obj/item/ammo_casing/c10mm/fire
+
+/obj/item/ammo_box/magazine/m10mm/hp
+	name = "pistol magazine (10mm HP)"
+	desc= "A gun magazine. Loaded with hollow-point rounds, extremely effective against unarmored targets, but nearly useless against protective clothing."
+	ammo_type = /obj/item/ammo_casing/c10mm/hp
+
+/obj/item/ammo_box/magazine/m10mm/ap
+	name = "pistol magazine (10mm AP)"
+	desc= "A gun magazine. Loaded with rounds which penetrate armour, but are less effective against normal targets"
+	ammo_type = /obj/item/ammo_casing/c10mm/ap
+
 /obj/item/ammo_box/magazine/m10mm/empty		//for maint drops
 	desc = "A gun magazine. Seems to be broken and can only hold one bullet. Pretty useless."
 	max_ammo = 1

code/modules/projectiles/projectile/bullets.dm

@@ -112,6 +112,20 @@
 /obj/item/projectile/bullet/midbullet3
 	damage = 30
 
+/obj/item/projectile/bullet/midbullet3/hp
+	damage = 40
+	armour_penetration = -50
+
+/obj/item/projectile/bullet/midbullet3/ap
+	damage = 27
+	armour_penetration = 40
+
+/obj/item/projectile/bullet/midbullet3/fire/on_hit(atom/target, blocked = 0)
+	if(..(target, blocked))
+		var/mob/living/M = target
+		M.adjust_fire_stacks(1)
+		M.IgniteMob()
+
 /obj/item/projectile/bullet/heavybullet
 	damage = 35