Files
Polaris/code/game/communications.dm
rastaf.zero@gmail.com ca38eb1eb8 One little derp fixed.
Bottles now again transfers 10 units of contents at once.


git-svn-id: http://tgstation13.googlecode.com/svn/trunk@896 316c924e-a436-60f5-8080-3fe189b3f50e
2011-01-21 20:08:59 +00:00

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/*
HOW IT WORKS
The radio_controller is a global object maintaining all radio transmissions, think about it as about "ether".
Note that /obj/item/device/radio handles transmission using nonstandard way.
procs:
add_object(obj/device as obj, var/new_frequency as num, var/filter as num|null = null)
Adds listening object.
parameters:
device - device receiving signals, must have proc receive_signal (see description below).
one device may listen several frequencies, but not same frequency twice.
new_frequency - see possibly frequencies below;
filter - thing for optimization. Optional, but recommended.
All filters should be consolidated in this file, see defines later.
Device without listening filter will receive all signals (on specified frequency).
Device with filter will receive any signals sent without filter.
Device with filter will not receive any signals sent with different filter.
returns:
Reference to frequency object.
remove_object (obj/device, old_frequency)
Obliviously, after calling this proc, device will not receive any signals on old_frequency.
Other frequencies will left unaffected.
return_frequency(var/frequency as num)
returns:
Reference to frequency object. Use it if you need to send and do not need to listen.
radio_frequency is a global object maintaining list of devices that listening specific frequency.
procs:
post_signal(obj/source as obj|null, datum/signal/signal, var/filter as num|null = null, var/range as num|null = null)
Sends signal to all devices that wants such signal.
parameters:
source - object, emitted signal. Usually, devices will not receive their own signals.
signal - see description below.
filter - described above.
range - radius of regular byond's square circle on that z-level. null means everywhere, on all z-levels.
obj/proc/receive_signal(datum/signal/signal, var/receive_method as num, var/receive_param)
Handler from received signals. By default does nothing. Define your own for your object.
Avoid of sending signals directly from this proc, use spawn(-1). Do not use sleep() here please.
parameters:
signal - see description below. Extract all needed data from the signal before doing sleep(), spawn() or return!
receive_method - may be TRANSMISSION_WIRE or TRANSMISSION_RADIO.
TRANSMISSION_WIRE is currently unused.
receive_param - for TRANSMISSION_RADIO here comes frequency.
datum/signal
vars:
source
an object that emitted signal. Used for debug and bearing.
data
list with transmitting data. Usual use pattern:
data["msg"] = "hello world"
encryption
Some number symbolizing "encryption key".
Note that game actually do not use any cryptography here.
If receiving object don't know right key, it must ignore encrypted signal in its receive_signal.
*/
/*
Frequency range: 1200 to 1600
Radiochat range: 1441 to 1489
Radio:
1459 - standard radio chat
1353 - Command
1355 - Medical
1357 - Engineering
1359 - Security
1441 - death squad
1443 - Confession Intercom
Devices:
1457 - RSD default
1451 - tracking implant
On the map:
1311 for prison shuttle console (in fact, it is not used)
1435 for status displays
1437 for atmospherics/fire alerts
1439 for engine components
1439 for air pumps, air scrubbers, atmo control
1441 for atmospherics - supply tanks
1443 for atmospherics - distribution loop/mixed air tank
1445 for bot nav beacons
1447 for mulebot, secbot and ed209 control
1449 for airlock controls, electropack
1451 for toxin lab access
1453 for engineering access
1455 for AI access
*/
#define TRANSMISSION_WIRE 0
#define TRANSMISSION_RADIO 1
/* filters */
var/const/RADIO_TO_AIRALARM = 1
var/const/RADIO_FROM_AIRALARM = 2
var/const/RADIO_CHAT = 3
var/global/datum/controller/radio/radio_controller
datum/controller/radio
var/list/datum/radio_frequency/frequencies = list()
proc/add_object(obj/device as obj, var/new_frequency as num, var/filter = null as num|null)
var/f_text = num2text(new_frequency)
var/datum/radio_frequency/frequency = frequencies[f_text]
if(!frequency)
frequency = new
frequency.frequency = new_frequency
frequencies[f_text] = frequency
frequency.add_listener(device, filter)
return frequency
proc/remove_object(obj/device, old_frequency)
var/f_text = num2text(old_frequency)
var/datum/radio_frequency/frequency = frequencies[f_text]
if(frequency)
frequency.remove_listener(device)
if(frequency.devices.len == 0)
del(frequency)
frequencies -= f_text
return 1
proc/return_frequency(var/frequency as num)
var/f_text = num2text(frequency)
return frequencies[f_text]
datum/radio_frequency
var/frequency as num
var/list/list/obj/devices = list()
proc
post_signal(obj/source as obj|null, datum/signal/signal, var/filter = null as num|null, var/range = null as num|null)
// var/N=0
// var/Nt=0
var/filter_str = num2text(filter)
var/turf/start_point
if(range)
start_point = get_turf(source)
if(!start_point)
del(signal)
return 0
if (filter)
var/list/obj/devices_line = devices[filter_str]
for(var/obj/device in devices_line)
if(device == source)
continue
if(range)
var/turf/end_point = get_turf(device)
if(!end_point)
continue
//if(max(abs(start_point.x-end_point.x), abs(start_point.y-end_point.y)) <= range)
if(start_point.z!=end_point.z || get_dist(start_point, end_point) > range)
continue
device.receive_signal(signal, TRANSMISSION_RADIO, frequency)
else
for (var/next_filter in devices)
// var/list/obj/DDD = devices[next_filter]
// Nt+=DDD.len
for(var/obj/device in devices[next_filter])
if(device == source)
continue
if(range)
var/turf/end_point = get_turf(device)
if(!end_point)
continue
//if(max(abs(start_point.x-end_point.x), abs(start_point.y-end_point.y)) <= range)
if(start_point.z!=end_point.z || get_dist(start_point, end_point) > range)
continue
device.receive_signal(signal, TRANSMISSION_RADIO, frequency)
// N++
// log_admin("DEBUG: post_signal(source=[source] ([source.x], [source.y]),filter=[filter]) frequency=[frequency], N=[N],Nt=[Nt]")
del(signal)
add_listener(obj/device as obj, var/filter as num|null)
//log_admin("add_listener(device=[device],filter=[filter]) frequency=[frequency]")
var/filter_str = num2text(filter)
var/list/obj/devices_line = devices[filter_str]
if (!devices_line)
devices_line = new
devices[filter_str] = devices_line
devices_line+=device
// var/list/obj/devices_line___ = devices[filter_str]
// var/l = devices_line___.len
//log_admin("DEBUG: devices_line.len=[devices_line.len]")
//log_admin("DEBUG: devices(filter_str).len=[l]")
remove_listener(obj/device)
for (var/devices_filter in devices)
devices[devices_filter]-=device
obj/proc
receive_signal(datum/signal/signal, receive_method, receive_param)
return null
datum/signal
var/obj/source
var/transmission_method = 0
//0 = wire
//1 = radio transmission
var/data = list()
var/encryption
proc/copy_from(datum/signal/model)
source = model.source
transmission_method = model.transmission_method
data = model.data
encryption = model.encryption