Adds DWDL-04 Dropwall Launcher for Mechs (#30042)

* Adds DWDL-04 Dropwall Launcher mech module

* Buffed deploy speed

* Updated weapon desc

* Lints

code/game/mecha/equipment/weapons/weapons.dm

@@ -455,6 +455,30 @@
 	projectile_energy_cost = 100
 	harmful = FALSE
 
+/obj/item/mecha_parts/mecha_equipment/weapon/ballistic/missile_rack/dropwall
+	name = "\improper DWDL-04 Dropwall Launcher"
+	desc = "A large, semi-automatic launcher designed by Shellguard Munitions to fire dropwall shield generators."
+	icon_state = "mecha_grenadelnchr"
+	origin_tech = "combat=4;engineering=4"
+	projectile = /obj/item/grenade/barrier/dropwall
+	missile_speed = 1.5
+	projectile_energy_cost = 750
+	projectiles = 4
+	size = 1
+
+/obj/item/mecha_parts/mecha_equipment/weapon/ballistic/missile_rack/dropwall/action(target, params)
+	if(!action_checks(target))
+		return
+	set_ready_state(0)
+	var/obj/item/grenade/barrier/dropwall/DW = new projectile(chassis.loc)
+	playsound(chassis, fire_sound, 50, 1)
+	DW.mode = angle2dir_cardinal(get_angle(get_turf(src), get_turf(target)))
+	DW.throw_at(target, missile_range, missile_speed)
+	DW.active = TRUE
+	projectiles--
+	log_message("Fired from [name], targeting [target].")
+	do_after_cooldown()
+
 /obj/item/mecha_parts/mecha_equipment/weapon/ballistic/missile_rack/banana_mortar/can_attach(obj/mecha/combat/honker/M as obj)
 	if(..())
 		if(istype(M))

code/modules/research/designs/mechfabricator_designs.dm

@@ -980,6 +980,16 @@
 	construction_time = 10 SECONDS
 	category = list("Exosuit Equipment")
 
+/datum/design/dropwall_launcher
+	name = "Exosuit Module (DWDL-04 Dropwall Launcher)"
+	id = "dropwall_launcher"
+	build_type = MECHFAB
+	req_tech = list("engineering" = 6, "bluespace" = 6, "combat" = 6)
+	build_path = /obj/item/mecha_parts/mecha_equipment/weapon/ballistic/missile_rack/cleaner
+	materials = list(list(MAT_METAL = 8000, MAT_GLASS = 8000, MAT_SILVER = 4000, MAT_TITANIUM = 4000, MAT_PLASMA = 4000))
+	construction_time = 10 SECONDS
+	category = list("Exosuit Equipment")
+
 /datum/design/mech_bola
 	name = "Exosuit Weapon Design (PCMK-6 Bola Launcher)"
 	desc = "Allows for the construction of PCMK-6 Bola Launcher."