136 lines
3.6 KiB
C++
136 lines
3.6 KiB
C++
// jsclient.cxx -- simple UDP networked joystick client
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//
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// Copyright (C) 2003 by Manuel Bessler and Stephen Lowry
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//
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// based on joyclient.cxx by Curtis Olson
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// Copyright (C) 2000 Curtis L. Olson - curt@flightgear.org
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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//
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// $Id$
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#include <simgear/debug/logstream.hxx>
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#include <simgear/io/iochannel.hxx>
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#include <Aircraft/aircraft.hxx>
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#include <Main/fg_props.hxx>
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#include "jsclient.hxx"
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FGJsClient::FGJsClient() {
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active = fgHasNode("/jsclient"); // if exist, assume bindings are defined
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SG_LOG( SG_IO, SG_INFO, "/jsclient exists, activating JsClient remote joystick support");
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for( int i = 0; i < 4; ++i )
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{
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axisdef[i] = fgGetNode("/jsclient/axis", i);
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if( axisdef[i] != NULL )
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{
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axisdefstr[i] = axisdef[i]->getStringValue();
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SG_LOG( SG_IO, SG_INFO, "jsclient axis[" << i << "] mapped to property " << axisdefstr[i]);
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}
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else
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axisdefstr[i] = "";
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}
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}
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FGJsClient::~FGJsClient() {
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}
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// open hailing frequencies
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bool FGJsClient::open() {
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if ( is_enabled() ) {
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SG_LOG( SG_IO, SG_ALERT, "This shouldn't happen, but the channel "
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<< "is already in use, ignoring" );
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return false;
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}
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SGIOChannel *io = get_io_channel();
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if ( ! io->open( get_direction() ) ) {
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SG_LOG( SG_IO, SG_ALERT, "Error opening channel communication layer." );
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return false;
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}
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set_enabled( true );
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return true;
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}
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// process work for this port
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bool FGJsClient::process() {
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SGIOChannel *io = get_io_channel();
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int length = 4+4+4+4+4+4;
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// if( ! active )
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// return true;
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if ( get_direction() == SG_IO_OUT ) {
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SG_LOG( SG_IO, SG_ALERT, "JsClient protocol is read only" );
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return false;
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} else if ( get_direction() == SG_IO_IN ) {
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SG_LOG( SG_IO, SG_DEBUG, "Searching for data." );
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if ( io->get_type() == sgFileType ) {
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if ( io->read( (char *)(& buf), length ) == length ) {
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SG_LOG( SG_IO, SG_DEBUG, "Success reading data." );
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long int *msg;
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msg = (long int *)buf;
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for( int i = 0; i < 4; ++i )
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{
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axis[i] = ((double)msg[i] / 2147483647.0);
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if ( fabs(axis[i]) < 0.05 )
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axis[i] = 0.0;
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if( axisdefstr[i].length() != 0 )
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fgSetFloat(axisdefstr[i].c_str(), axis[i]);
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}
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}
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} else {
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while ( io->read( (char *)(& buf), length ) == length ) {
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SG_LOG( SG_IO, SG_DEBUG, "Success reading data." );
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long int *msg;
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msg = (long int *)buf;
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SG_LOG( SG_IO, SG_DEBUG, "ax0 = " << msg[0] << " ax1 = "
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<< msg[1] << "ax2 = " << msg[2] << "ax3 = " << msg[3]);
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for( int i = 0; i < 4; ++i )
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{
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axis[i] = ((double)msg[i] / 2147483647.0);
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if ( fabs(axis[i]) < 0.05 )
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axis[i] = 0.0;
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if( axisdefstr[i].length() != 0 )
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fgSetFloat(axisdefstr[i].c_str(), axis[i]);
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}
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}
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}
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}
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return true;
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}
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// close the channel
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bool FGJsClient::close() {
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SGIOChannel *io = get_io_channel();
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set_enabled( false );
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if ( ! io->close() ) {
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return false;
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}
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return true;
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}
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