1 // multiplay.cxx -- protocol object for multiplay in Flightgear
3 // Written by Diarmuid Tyson, started February 2003.
4 // diarmuid.tyson@airservicesaustralia.com
6 // Copyright (C) 2003 Airservices Australia
8 // This program is free software; you can redistribute it and/or
9 // modify it under the terms of the GNU General Public License as
10 // published by the Free Software Foundation; either version 2 of the
11 // License, or (at your option) any later version.
13 // This program is distributed in the hope that it will be useful, but
14 // WITHOUT ANY WARRANTY; without even the implied warranty of
15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 // General Public License for more details.
18 // You should have received a copy of the GNU General Public License
19 // along with this program; if not, write to the Free Software
20 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 #include <simgear/compiler.h>
30 #include <simgear/debug/logstream.hxx>
31 #include <simgear/scene/model/placement.hxx>
32 #include <simgear/scene/model/placementtrans.hxx>
34 #include <Scenery/scenery.hxx>
36 #include "multiplay.hxx"
41 // These constants are provided so that the ident command can list file versions.
42 const char sFG_MULTIPLAY_BID[] = "$Id$";
43 const char sFG_MULTIPLAY_HID[] = FG_MULTIPLAY_HID;
46 /******************************************************************
48 * Description: Constructor. Initialises the protocol and stores
49 * host and port information.
50 ******************************************************************/
51 FGMultiplay::FGMultiplay (const string &dir, const int rate, const string &host, const int port) {
57 if (get_direction() == SG_IO_IN) {
59 fgSetInt("/sim/multiplay/rxport", port);
60 fgSetString("/sim/multiplay/rxhost", host.c_str());
62 } else if (get_direction() == SG_IO_OUT) {
64 fgSetInt("/sim/multiplay/txport", port);
65 fgSetString("/sim/multiplay/txhost", host.c_str());
72 /******************************************************************
74 * Description: Destructor.
75 ******************************************************************/
76 FGMultiplay::~FGMultiplay () {
80 /******************************************************************
82 * Description: Enables the protocol.
83 ******************************************************************/
84 bool FGMultiplay::open() {
87 SG_LOG( SG_IO, SG_ALERT, "This shouldn't happen, but the channel "
88 << "is already in use, ignoring" );
98 /******************************************************************
100 * Description: Prompts the multiplayer mgr to either send
101 * or receive data over the network
102 ******************************************************************/
103 bool FGMultiplay::process() {
105 if (get_direction() == SG_IO_IN) {
107 globals->get_multiplayer_rx_mgr()->ProcessData();
109 } else if (get_direction() == SG_IO_OUT) {
112 globals->get_aircraft_model()->get3DModel()->getTransform()->getTransform(posTrans);
113 Point3D center = globals->get_scenery()->get_center();
114 sgdVec3 PlayerPosition;
115 sgdSetVec3(PlayerPosition, posTrans[3][0] + center[0],
116 posTrans[3][1] + center[1], posTrans[3][2] + center[2]);
117 sgQuat PlayerOrientation;
118 sgMatrixToQuat(PlayerOrientation, posTrans);
120 globals->get_multiplayer_tx_mgr()->SendMyPosition(PlayerOrientation, PlayerPosition);
128 /******************************************************************
130 * Description: Closes the multiplayer mgrs to stop any further
132 ******************************************************************/
133 bool FGMultiplay::close() {
135 if (get_direction() == SG_IO_IN) {
137 globals->get_multiplayer_rx_mgr()->Close();
139 } else if (get_direction() == SG_IO_OUT) {
141 globals->get_multiplayer_tx_mgr()->Close();