GS13NG/code/modules/mod/modules/modules_engineering.dm

//Engineering modules for MODsuits

///Welding Protection - Makes the helmet protect from flashes and welding.
/obj/item/mod/module/welding
	name = "MOD welding protection module"
	desc = "A module installed into the visor of the suit, this projects a \
		polarized, holographic overlay in front of the user's eyes. It's rated high enough for \
		immunity against extremities such as spot and arc welding, solar eclipses, and handheld flashlights."
	icon_state = "welding"
	complexity = 1
	incompatible_modules = list(/obj/item/mod/module/welding)
	overlay_state_inactive = "module_welding"

/obj/item/mod/module/welding/on_suit_activation()
	mod.helmet.flash_protect = 2

/obj/item/mod/module/welding/on_suit_deactivation(deleting = FALSE)
	if(deleting)
		return
	mod.helmet.flash_protect = initial(mod.helmet.flash_protect)

///T-Ray Scan - Scans the terrain for undertile objects.
/obj/item/mod/module/t_ray
	name = "MOD t-ray scan module"
	desc = "A module installed into the visor of the suit, allowing the user to use a pulse of terahertz radiation \
		to essentially echolocate things beneath the floor, mostly cables and pipes. \
		A staple of atmospherics work, and counter-smuggling work."
	icon_state = "tray"
	module_type = MODULE_TOGGLE
	complexity = 1
	active_power_cost = DEFAULT_CHARGE_DRAIN * 0.5
	incompatible_modules = list(/obj/item/mod/module/t_ray)
	cooldown_time = 0.5 SECONDS
	/// T-ray scan range.
	var/range = 4

/obj/item/mod/module/t_ray/on_active_process(delta_time)
	t_ray_scan(mod.wearer, 0.8 SECONDS, range)

///Magnetic Stability - Gives the user a slowdown but makes them negate gravity and be immune to slips.
/obj/item/mod/module/magboot
	name = "MOD magnetic stability module"
	desc = "These are powerful electromagnets fitted into the suit's boots, allowing users both \
		excellent traction no matter the condition indoors, and to essentially hitch a ride on the exterior of a hull. \
		However, these basic models do not feature computerized systems to automatically toggle them on and off, \
		so numerous users report a certain stickiness to their steps."
	icon_state = "magnet"
	module_type = MODULE_TOGGLE
	complexity = 2
	active_power_cost = DEFAULT_CHARGE_DRAIN * 0.5
	incompatible_modules = list(/obj/item/mod/module/magboot)
	cooldown_time = 0.5 SECONDS
	/// Slowdown added onto the suit.
	var/slowdown_active = 2

/obj/item/mod/module/magboot/on_activation()
	. = ..()
	if(!.)
		return
	mod.boots.clothing_flags |= NOSLIP
	ADD_TRAIT(mod.wearer, TRAIT_NOSLIPWATER, MOD_TRAIT)
	mod.slowdown += slowdown_active
	mod.wearer.update_gravity(mod.wearer.has_gravity())
	mod.wearer.update_equipment_speed_mods()

/obj/item/mod/module/magboot/on_deactivation(display_message = TRUE, deleting = FALSE)
	. = ..()
	if(!.)
		return
	mod.boots.clothing_flags &= ~NOSLIP
	REMOVE_TRAIT(mod.wearer, TRAIT_NOSLIPWATER, MOD_TRAIT)
	mod.slowdown -= slowdown_active
	mod.wearer.update_gravity(mod.wearer.has_gravity())
	mod.wearer.update_equipment_speed_mods()

/obj/item/mod/module/magboot/advanced
	name = "MOD advanced magnetic stability module"
	removable = FALSE
	complexity = 0
	slowdown_active = 0

///Emergency Tether - Shoots a grappling hook projectile in 0g that throws the user towards it.
/obj/item/mod/module/tether
	name = "MOD emergency tether module"
	desc = "A custom-built grappling-hook powered by a winch capable of hauling the user. \
		While some older models of cargo-oriented grapples have capacities of a few tons, \
		these are only capable of working in zero-gravity environments, a blessing to some Engineers."
	icon_state = "tether"
	module_type = MODULE_ACTIVE
	complexity = 3
	use_power_cost = DEFAULT_CHARGE_DRAIN
	incompatible_modules = list(/obj/item/mod/module/tether)
	cooldown_time = 1.5 SECONDS

/obj/item/mod/module/tether/on_use()
	if(mod.wearer.has_gravity(get_turf(src)))
		balloon_alert(mod.wearer, "too much gravity!")
		playsound(src, "gun_dry_fire", 25, TRUE)
		return FALSE
	return ..()

/obj/item/mod/module/tether/on_select_use(atom/target)
	. = ..()
	if(!.)
		return
	var/obj/item/projectile/tether = new /obj/item/projectile/tether(mod.wearer.loc)
	tether.preparePixelProjectile(target, mod.wearer)
	tether.firer = mod.wearer
	playsound(src, 'sound/weapons/batonextend.ogg', 25, TRUE)
	INVOKE_ASYNC(tether, /obj/item/projectile.proc/fire)
	drain_power(use_power_cost)

/obj/item/projectile/tether
	name = "tether"
	icon_state = "tether_projectile"
	icon = 'icons/obj/clothing/modsuit/mod_modules.dmi'
	damage = 0
	nodamage = TRUE
	range = 10
	hitsound = 'sound/weapons/batonextend.ogg'
	hitsound_wall = 'sound/weapons/batonextend.ogg'
	suppressed = SUPPRESSED_VERY
	hit_threshhold = LATTICE_LAYER
	/// Reference to the beam following the projectile.
	var/line

/obj/item/projectile/tether/fire(setAngle)
	if(firer)
		line = firer.Beam(src, "line", 'icons/obj/clothing/modsuit/mod_modules.dmi')
	..()

/obj/item/projectile/tether/on_hit(atom/target)
	. = ..()
	if(firer)
		firer.throw_at(target, 10, 1, firer, FALSE, FALSE, null, MOVE_FORCE_NORMAL, TRUE)

/obj/item/projectile/tether/Destroy()
	QDEL_NULL(line)
	return ..()

///Radiation Protection - Protects the user from radiation, gives them a geiger counter and rad info in the panel.
/obj/item/mod/module/rad_protection
	name = "MOD radiation protection module"
	desc = "A module utilizing polymers and reflective shielding to protect the user against ionizing radiation."
	icon_state = "radshield"
	complexity = 2
	idle_power_cost = DEFAULT_CHARGE_DRAIN * 0.3
	incompatible_modules = list(/obj/item/mod/module/rad_protection)

/obj/item/mod/module/rad_protection/on_suit_activation()
	mod.armor = mod.armor.modifyRating(rad = 65)
	mod.rad_flags = RAD_PROTECT_CONTENTS|RAD_NO_CONTAMINATE
	for(var/obj/item/part in mod.mod_parts)
		part.armor = mod.armor
		part.rad_flags = mod.rad_flags

/obj/item/mod/module/rad_protection/on_suit_deactivation(deleting = FALSE)
	mod.armor = mod.armor.modifyRating(rad = -65)
	mod.rad_flags = NONE
	for(var/obj/item/part in mod.mod_parts)
		part.armor = mod.armor
		part.rad_flags = mod.rad_flags

///Constructor - Lets you build quicker and create RCD holograms.
/obj/item/mod/module/constructor
	name = "MOD constructor module"
	desc = "This module entirely occupies the wearer's forearm, notably causing conflict with \
		advanced arm servos meant to carry crewmembers. However, it contains the \
		latest engineering schematics combined with inbuilt memory to help the user build walls."
	icon_state = "constructor"
	module_type = MODULE_USABLE
	complexity = 2
	idle_power_cost = DEFAULT_CHARGE_DRAIN * 0.2
	use_power_cost = DEFAULT_CHARGE_DRAIN * 2
	incompatible_modules = list(/obj/item/mod/module/constructor, /obj/item/mod/module/quick_carry)
	cooldown_time = 11 SECONDS

/obj/item/mod/module/constructor/on_suit_activation()
	ADD_TRAIT(mod.wearer, TRAIT_QUICK_BUILD, MOD_TRAIT)

/obj/item/mod/module/constructor/on_suit_deactivation(deleting = FALSE)
	REMOVE_TRAIT(mod.wearer, TRAIT_QUICK_BUILD, MOD_TRAIT)

///Mister - Sprays water over an area.
/obj/item/mod/module/mister
	name = "MOD water mister module"
	desc = "A module containing a mister, able to spray it over areas."
	icon_state = "mister"
	module_type = MODULE_ACTIVE
	complexity = 2
	active_power_cost = DEFAULT_CHARGE_DRAIN * 0.3
	device = /obj/item/reagent_containers/spray/mister
	incompatible_modules = list(/obj/item/mod/module/mister)
	cooldown_time = 0.5 SECONDS
	/// Volume of our reagent holder.
	var/volume = 500

/obj/item/mod/module/mister/Initialize(mapload)
	create_reagents(volume, OPENCONTAINER)
	return ..()

///Resin Mister - Sprays resin over an area.
/obj/item/mod/module/mister/atmos
	name = "MOD resin mister module"
	desc = "An atmospheric resin mister, able to fix up areas quickly."
	device = /obj/item/extinguisher/mini/nozzle/mod
	volume = 250

/obj/item/mod/module/mister/atmos/Initialize(mapload)
	. = ..()
	reagents.add_reagent(/datum/reagent/water, volume)

/obj/item/extinguisher/mini/nozzle/mod
	name = "MOD atmospheric mister"
	desc = "An atmospheric resin mister with three modes, mounted as a module."