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Bubberstation/code/modules/NTNet/relays.dm
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SkyratBot 79bb4facfc [MIRROR] Removes networks from the game [MDB IGNORE] (#20083) 
* Removes networks from the game (#74142)

## About The Pull Request

This is a continuation of
https://github.com/tgstation/tgstation/pull/74085 - I announced in the
comments there that this would be my next PR, and this is it.

Removes SSnetwork, ``/datum/ntnet``,
``/datum/component/ntnet_interface``, ``var/network_root_id``, the
network unit test, and a lot of other things related to networks.

- NTNet circuits now check for an Ntnet relay, and uses signals to
operate.
- Logs in Wirecarp is now only for PDA and Ntnet Relay things, so you
can no longer see what ruins exist using it (why should Wirecarp know
that Oldstation spawned? The flavor is that they dont know its there).
- Removed it from MULEbots entirely, I don't think it even did anything
for them? Botkeeper seems to work without it, so it's possibly there
from pre-tgui PDAs.
- Moves assigning random names to a base proc instead of being tied to
network, this is things like random-naming scrubbers/vents. The behavior
hasn't changed at all.
- Makes Ntos work for consoles when relays are down, as the comments
said they're supposed to (because they're wired). I think this was an
accidental change on my part, so this is a revert of that.

## Why It's Good For The Game

Ntnet is ancient code that hasn't given us much that we can't do with
already existing alternatives, we've been slowly moving away from it for
init times, and though a large portion of that was limited to airlocks,
I still don't think this is a system worth keeping around.
It's way too complex to expect feature coders to do anything with it,
and too old with better alternatives for anyone to want to improve any
of it.

## Changelog

🆑
fix: Computers are now properly connected to Ethernet, and can use Ntos
when Relays are down.
refactor: Removes Ntnet and Ntnet interfaces, which was only used by
Ntnet circuits (which now directly checks for a Relay to work) and
MULEbots, which did nothing with it.
balance: Wirecarp no longer tells you what ruins spawned in a round,
instead it's limited to PDA logs, and tells you the source too. This
means the RD can catch someone running illegal programs if they don't
make any attempt at hiding it.
qol: Wirecarp logs is now set to save 300 at once, instead of 100 and
being increased to 300 by the RD during the round. This is pretty
insignificant, since there's no reason to NOT want as many logs as
possible.
/🆑

---------

Co-authored-by: Zephyr <12817816+ZephyrTFA@ users.noreply.github.com>

* Removes networks from the game

---------

Co-authored-by: John Willard <53777086+JohnFulpWillard@users.noreply.github.com>
Co-authored-by: Zephyr <12817816+ZephyrTFA@ users.noreply.github.com>
2023-03-27 03:28:18 +01:00

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GLOBAL_LIST_EMPTY(ntnet_relays)
///Checks whether NTNet is available by ensuring at least one relay exists and is operational.
/proc/find_functional_ntnet_relay()
// Check all relays. If we have at least one working relay, ntos is up.
for(var/obj/machinery/ntnet_relay/relays as anything in GLOB.ntnet_relays)
if(!relays.is_operational)
continue
return TRUE
return FALSE
// 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 = ACTIVE_POWER_USE
active_power_usage = BASE_MACHINE_ACTIVE_CONSUMPTION * 10 //10kW, apropriate for machine that keeps massive cross-Zlevel wireless network operational. Used to be 20 but that actually drained the smes one round
icon = 'icons/obj/machines/telecomms.dmi'
icon_state = "bus"
density = TRUE
circuit = /obj/item/circuitboard/machine/ntnet_relay
///On / off status for the relay machine, toggleable by the user.
var/relay_enabled = TRUE
///(D)DoS-attack-related failure causing it not to be operational any longer.
var/dos_failure = FALSE
var/list/dos_sources = list() // Backwards reference for qdel() stuff
var/uid
var/static/gl_uid = 1
// 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 = 0.5 // Amount of DoS "packets" dissipated over time.
///Proc called to change the value of the `relay_enabled` variable and append behavior related to its change.
/obj/machinery/ntnet_relay/proc/set_relay_enabled(new_value)
if(new_value == relay_enabled)
return
. = relay_enabled
relay_enabled = new_value
if(.) //Turned off
set_is_operational(FALSE)
else if(!dos_failure && !(machine_stat & (NOPOWER|BROKEN|MAINT))) //Turned on
set_is_operational(TRUE)
///Proc called to change the value of the `dos_failure` variable and append behavior related to its change.
/obj/machinery/ntnet_relay/proc/set_dos_failure(new_value)
if(new_value == dos_failure)
return
. = dos_failure
dos_failure = new_value
if(.) //Failure ended
if(relay_enabled && !(machine_stat & (NOPOWER|BROKEN|MAINT)))
set_is_operational(TRUE)
else //Failure started
set_is_operational(FALSE)
/obj/machinery/ntnet_relay/on_set_machine_stat(old_value)
if(old_value & (NOPOWER|BROKEN|MAINT))
if(relay_enabled && !dos_failure && !(machine_stat & (NOPOWER|BROKEN|MAINT))) //From off to on.
set_is_operational(TRUE)
else if(machine_stat & (NOPOWER|BROKEN|MAINT)) //From on to off.
set_is_operational(FALSE)
/obj/machinery/ntnet_relay/update_icon_state()
icon_state = "bus[is_operational ? null : "_off"]"
return ..()
/obj/machinery/ntnet_relay/process(delta_time)
update_use_power(is_operational ? ACTIVE_POWER_USE : IDLE_POWER_USE)
update_appearance()
if(dos_overload > 0)
dos_overload = max(0, dos_overload - dos_dissipate * delta_time)
// If DoS traffic exceeded capacity, crash.
if((dos_overload > dos_capacity) && !dos_failure)
set_dos_failure(TRUE)
update_appearance()
SSmodular_computers.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)
set_dos_failure(FALSE)
update_appearance()
SSmodular_computers.add_log("Quantum relay switched from overload recovery mode to normal operation mode.")
return ..()
/obj/machinery/ntnet_relay/ui_interact(mob/user, datum/tgui/ui)
ui = SStgui.try_update_ui(user, src, ui)
if(!ui)
ui = new(user, src, "NtnetRelay")
ui.open()
/obj/machinery/ntnet_relay/ui_data(mob/user)
var/list/data = list()
data["enabled"] = relay_enabled
data["dos_capacity"] = dos_capacity
data["dos_overload"] = dos_overload
data["dos_crashed"] = dos_failure
return data
/obj/machinery/ntnet_relay/ui_act(action, params)
. = ..()
if(.)
return
switch(action)
if("restart")
dos_overload = 0
set_dos_failure(FALSE)
update_appearance()
SSmodular_computers.add_log("Quantum relay manually restarted from overload recovery mode to normal operation mode.")
return TRUE
if("toggle")
set_relay_enabled(!relay_enabled)
SSmodular_computers.add_log("Quantum relay manually [relay_enabled ? "enabled" : "disabled"].")
update_appearance()
return TRUE
/obj/machinery/ntnet_relay/Initialize(mapload)
uid = gl_uid++
component_parts = list()
GLOB.ntnet_relays += src
SSmodular_computers.add_log("New quantum relay activated. Current amount of linked relays: [GLOB.ntnet_relays.len]")
return ..()
/obj/machinery/ntnet_relay/Destroy()
GLOB.ntnet_relays -= src
SSmodular_computers.add_log("Quantum relay connection severed. Current amount of linked relays: [GLOB.ntnet_relays.len]")
for(var/datum/computer_file/program/ntnet_dos/D in dos_sources)
D.target = null
D.error = "Connection to quantum relay severed"
return ..()
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