Adds Point Defense turrets.

code/modules/projectiles/guns/energy/laser.dm

@@ -57,6 +57,28 @@
 	item_state = "lrifle"
 	origin_tech = list(TECH_COMBAT = 4, TECH_MAGNET = 3)
 
+/obj/item/weapon/gun/energy/mininglaser
+	name = "mining-laser rifle"
+	desc = "A Hephaestus Industries G22T rifle, now only produced for its impeccable ability to break stone with its pulsating blasts."
+	description_fluff = "The leading arms producer in the SCG, Hephaestus typically only uses its 'top level' branding for its military-grade equipment used by armed forces across human space."
+	icon = 'icons/obj/gun2.dmi'
+	icon_state = "mininglaser"
+	item_state = "laser"
+	wielded_item_state = "laser-wielded"
+	fire_delay = 8
+	slot_flags = SLOT_BELT|SLOT_BACK
+	w_class = ITEMSIZE_LARGE
+	force = 15
+	origin_tech = list(TECH_COMBAT = 3, TECH_MAGNET = 2)
+	matter = list(DEFAULT_WALL_MATERIAL = 2000)
+	projectile_type = /obj/item/projectile/beam/mininglaser
+	one_handed_penalty = 30
+
+	firemodes = list(
+		list(mode_name="mining", fire_delay=8, projectile_type=/obj/item/projectile/beam/mininglaser, charge_cost = 200),
+		list(mode_name="deter", fire_delay=5, projectile_type=/obj/item/projectile/beam/weaklaser, charge_cost = 80),
+		)
+
 /obj/item/weapon/gun/energy/retro
 	name = "retro laser"
 	icon_state = "retro"

code/modules/projectiles/projectile/beams.dm

@@ -17,6 +17,8 @@
 	hitsound = 'sound/weapons/sear.ogg'
 	hitsound_wall = 'sound/weapons/effects/searwall.ogg'
 
+	excavation_amount = 50
+
 	muzzle_type = /obj/effect/projectile/muzzle/laser
 	tracer_type = /obj/effect/projectile/tracer/laser
 	impact_type = /obj/effect/projectile/impact/laser
@@ -46,6 +48,18 @@
 	damage = 40
 	armor_penetration = 10
 
+/obj/item/projectile/beam/mininglaser
+	name = "pulsating laser"
+	damage = 10
+	armor_penetration = 20
+	fire_sound = 'sound/weapons/eluger.ogg'
+
+	excavation_amount = 100
+
+	muzzle_type = /obj/effect/projectile/muzzle/emitter
+	tracer_type = /obj/effect/projectile/tracer/emitter
+	impact_type = /obj/effect/projectile/impact/emitter
+
 /obj/item/projectile/beam/heavylaser
 	name = "heavy laser"
 	icon_state = "heavylaser"

code/modules/projectiles/projectile/bullets.dm

@@ -10,6 +10,7 @@
 	sharp = 1
 	hitsound_wall = "ricochet"
 	impact_effect_type = /obj/effect/temp_visual/impact_effect
+	excavation_amount  = 20
 	var/mob_passthrough_check = 0
 
 	muzzle_type = /obj/effect/projectile/muzzle/bullet