429f2530de
* experimental clean-up / reduction on two of the FG headers:
(I'm going to await feedback on the developers list before doing more of
these, to avoiding going over files multiple times, but in principle it
seems pretty straightforward.)
* final fixes for SG_USING_STD removal
128 lines
3.3 KiB
C++
128 lines
3.3 KiB
C++
// joyclient.cxx -- Agwagon joystick client class
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//
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// Written by Curtis Olson, started April 2000.
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//
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// Copyright (C) 2000 Curtis L. Olson - http://www.flightgear.org/~curt
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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//
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// $Id$
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <simgear/debug/logstream.hxx>
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#include <simgear/io/iochannel.hxx>
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#include <Aircraft/controls.hxx>
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#include <Main/globals.hxx>
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#include "joyclient.hxx"
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FGJoyClient::FGJoyClient() {
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}
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FGJoyClient::~FGJoyClient() {
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}
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// open hailing frequencies
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bool FGJoyClient::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 FGJoyClient::process() {
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SGIOChannel *io = get_io_channel();
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int length = sizeof(int[2]);
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if ( get_direction() == SG_IO_OUT ) {
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SG_LOG( SG_IO, SG_ALERT, "joyclient 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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int *msg;
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msg = (int *)buf;
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SG_LOG( SG_IO, SG_DEBUG, "X = " << msg[0] << " Y = "
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<< msg[1] );
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double aileron = ((double)msg[0] / 2048.0) - 1.0;
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double elevator = ((double)msg[1] / 2048.0) - 1.0;
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if ( fabs(aileron) < 0.05 ) {
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aileron = 0.0;
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}
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if ( fabs(elevator) < 0.05 ) {
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elevator = 0.0;
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}
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globals->get_controls()->set_aileron( aileron );
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globals->get_controls()->set_elevator( -elevator );
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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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int *msg;
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msg = (int *)buf;
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SG_LOG( SG_IO, SG_DEBUG, "X = " << msg[0] << " Y = "
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<< msg[1] );
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double aileron = ((double)msg[0] / 2048.0) - 1.0;
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double elevator = ((double)msg[1] / 2048.0) - 1.0;
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if ( fabs(aileron) < 0.05 ) {
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aileron = 0.0;
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}
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if ( fabs(elevator) < 0.05 ) {
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elevator = 0.0;
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}
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globals->get_controls()->set_aileron( aileron );
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globals->get_controls()->set_elevator( -elevator );
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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 FGJoyClient::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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