Files
Yogstation/code/modules/modular_computers/NTNet/NTNet_relay.dm
2016-07-30 13:45:46 -07:00

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// Relays don't handle any actual communication. Global NTNet datum does that, relays only tell the datum if it should or shouldn't work.
/obj/machinery/ntnet_relay
name = "NTNet Quantum Relay"
desc = "A very complex router and transmitter capable of connecting electronic devices together. Looks fragile."
use_power = 2
active_power_usage = 20000 //20kW, apropriate for machine that keeps massive cross-Zlevel wireless network operational.
idle_power_usage = 100
icon_state = "bus"
anchored = 1
density = 1
var/datum/ntnet/NTNet = null // This is mostly for backwards reference and to allow varedit modifications from ingame.
var/enabled = 1 // Set to 0 if the relay was turned off
var/dos_failure = 0 // Set to 1 if the relay failed due to (D)DoS attack
var/list/dos_sources = list() // Backwards reference for qdel() stuff
// Denial of Service attack variables
var/dos_overload = 0 // Amount of DoS "packets" in this relay's buffer
var/dos_capacity = 500 // Amount of DoS "packets" in buffer required to crash the relay
var/dos_dissipate = 1 // Amount of DoS "packets" dissipated over time.
// TODO: Implement more logic here. For now it's only a placeholder.
/obj/machinery/ntnet_relay/proc/is_operational()
if(stat & (BROKEN | NOPOWER | EMPED))
return 0
if(dos_failure)
return 0
if(!enabled)
return 0
return 1
/obj/machinery/ntnet_relay/update_icon()
if(is_operational())
icon_state = "bus"
else
icon_state = "bus_off"
/obj/machinery/ntnet_relay/process()
if(is_operational())
use_power = 2
else
use_power = 1
if(dos_overload)
dos_overload = max(0, dos_overload - dos_dissipate)
// If DoS traffic exceeded capacity, crash.
if((dos_overload > dos_capacity) && !dos_failure)
dos_failure = 1
update_icon()
ntnet_global.add_log("Quantum relay switched from normal operation mode to overload recovery mode.")
// If the DoS buffer reaches 0 again, restart.
if((dos_overload == 0) && dos_failure)
dos_failure = 0
update_icon()
ntnet_global.add_log("Quantum relay switched from overload recovery mode to normal operation mode.")
..()
/obj/machinery/ntnet_relay/ui_interact(mob/user, ui_key = "main", var/datum/nanoui/ui = null, var/force_open = 1, var/datum/topic_state/state = default_state)
var/list/data = list()
data["enabled"] = enabled
data["dos_capacity"] = dos_capacity
data["dos_overload"] = dos_overload
data["dos_crashed"] = dos_failure
ui = nanomanager.try_update_ui(user, src, ui_key, ui, data, force_open)
if (!ui)
ui = new(user, src, ui_key, "ntnet_relay.tmpl", "NTNet Quantum Relay", 500, 300, state = state)
ui.set_initial_data(data)
ui.open()
ui.set_auto_update(1)
/obj/machinery/ntnet_relay/attack_hand(var/mob/living/user)
ui_interact(user)
/obj/machinery/ntnet_relay/Topic(href, href_list)
if(..())
return 1
if(href_list["restart"])
dos_overload = 0
dos_failure = 0
update_icon()
ntnet_global.add_log("Quantum relay manually restarted from overload recovery mode to normal operation mode.")
else if(href_list["toggle"])
enabled = !enabled
ntnet_global.add_log("Quantum relay manually [enabled ? "enabled" : "disabled"].")
update_icon()
/obj/machinery/ntnet_relay/New()
uid = gl_uid
gl_uid++
component_parts = list()
component_parts += new /obj/item/stack/cable_coil(src,15)
component_parts += new /obj/item/weapon/circuitboard/ntnet_relay(src)
if(ntnet_global)
ntnet_global.relays.Add(src)
NTNet = ntnet_global
ntnet_global.add_log("New quantum relay activated. Current amount of linked relays: [NTNet.relays.len]")
..()
/obj/machinery/ntnet_relay/Destroy()
if(ntnet_global)
ntnet_global.relays.Remove(src)
ntnet_global.add_log("Quantum relay connection severed. Current amount of linked relays: [NTNet.relays.len]")
NTNet = null
for(var/datum/computer_file/program/ntnet_dos/D in dos_sources)
D.target = null
D.error = "Connection to quantum relay severed"
..()
/obj/machinery/ntnet_relay/attackby(var/obj/item/weapon/W as obj, var/mob/user as mob)
if(istype(W, /obj/item/weapon/screwdriver))
playsound(src.loc, 'sound/items/Screwdriver.ogg', 50, 1)
panel_open = !panel_open
user << "You [panel_open ? "open" : "close"] the maintenance hatch"
return
if(istype(W, /obj/item/weapon/crowbar))
if(!panel_open)
user << "Open the maintenance panel first."
return
playsound(src.loc, 'sound/items/Crowbar.ogg', 50, 1)
user << "You disassemble \the [src]!"
for(var/atom/movable/A in component_parts)
A.forceMove(src.loc)
new/obj/machinery/constructable_frame/machine_frame(src.loc)
qdel(src)
return
..()