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flightgear/src/Input/fgjs.cxx

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// fgjs.cxx -- assign joystick axes to flightgear properties
//
// Updated to allow xml output & added a few bits & pieces
// Laurie Bradshaw, Jun 2005
//
// Written by Tony Peden, started May 2001
//
// Copyright (C) 2001 Tony Peden (apeden@earthlink.net)
// Copyright (C) 2006 Stefan Seifert
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
// published by the Free Software Foundation; either version 2 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <simgear/compiler.h>
#ifdef _WIN32
# include <winsock2.h>
#endif
#include <math.h>
#include <iostream>
#include <fstream>
#include <string>
using std::fstream;
using std::cout;
using std::cin;
using std::endl;
using std::ios;
using std::string;
#include <simgear/constants.h>
#include <simgear/debug/logstream.hxx>
#include <simgear/misc/sg_path.hxx>
#include <simgear/misc/sgstream.hxx>
#include <simgear/structure/exception.hxx>
#include <simgear/props/props_io.hxx>
#include <Main/fg_io.hxx>
#include <Main/fg_props.hxx>
#include <Main/globals.hxx>
#include "jsinput.h"
using simgear::PropertyList;
bool confirmAnswer() {
char answer;
do {
cout << "Is this correct? (y/n) $ ";
cin >> answer;
cin.ignore(256, '\n');
if (answer == 'y')
return true;
if (answer == 'n')
return false;
} while (true);
}
string getFGRoot( int argc, char *argv[] );
int main( int argc, char *argv[] ) {
for (int i = 1; i < argc; i++) {
if (strcmp("--help", argv[i]) == 0) {
cout << "Usage:" << endl;
cout << " --help\t\t\tShow this help" << endl;
exit(0);
} else if (strncmp("--fg-root=", argv[i], 10) == 0) {
// used later
} else {
cout << "Unknown option \"" << argv[i] << "\"" << endl;
exit(0);
}
}
jsInit();
jsSuper *jss = new jsSuper();
jsInput *jsi = new jsInput(jss);
jsi->displayValues(false);
cout << "Found " << jss->getNumJoysticks() << " joystick(s)" << endl;
if(jss->getNumJoysticks() <= 0) {
cout << "Can't find any joysticks ..." << endl;
exit(1);
}
cout << endl << "Now measuring the dead band of your joystick. The dead band is the area " << endl
<< "where the joystick is centered and should not generate any input. Move all " << endl
<< "axes around in this dead zone during the ten seconds this test will take." << endl;
cout << "Press enter to continue." << endl;
cin.ignore(1024, '\n');
jsi->findDeadBand();
cout << endl << "Dead band calibration finished. Press enter to start control assignment." << endl;
cin.ignore(1024, '\n');
jss->firstJoystick();
fstream *xfs = new fstream[ jss->getNumJoysticks() ];
SGPropertyNode_ptr *jstree = new SGPropertyNode_ptr[ jss->getNumJoysticks() ];
do {
cout << "Joystick #" << jss->getCurrentJoystickId()
<< " \"" << jss->getJoystick()->getName() << "\" has "
<< jss->getJoystick()->getNumAxes() << " axes" << endl;
char filename[16];
snprintf(filename, 16, "js%i.xml", jss->getCurrentJoystickId());
xfs[ jss->getCurrentJoystickId() ].open(filename, ios::out);
jstree[ jss->getCurrentJoystickId() ] = new SGPropertyNode();
} while ( jss->nextJoystick() );
SGPath templatefile( getFGRoot(argc, argv) );
templatefile.append("Input");
templatefile.append("Joysticks");
templatefile.append("template.xml");
SGPropertyNode *templatetree = new SGPropertyNode();
try {
readProperties(templatefile.str().c_str(), templatetree);
} catch (sg_io_exception e) {
cout << e.getFormattedMessage ();
}
PropertyList axes = templatetree->getChildren("axis");
for(PropertyList::iterator iter = axes.begin(); iter != axes.end(); iter++) {
cout << "Move the control you wish to use for " << (*iter)->getStringValue("desc")
<< " " << (*iter)->getStringValue("direction") << endl;
cout << "Pressing a button skips this axis" << endl;
fflush( stdout );
jsi->getInput();
if (jsi->getInputAxis() != -1) {
cout << endl << "Assigned axis " << jsi->getInputAxis()
<< " on joystick " << jsi->getInputJoystick()
<< " to control " << (*iter)->getStringValue("desc") << endl;
if ( confirmAnswer() ) {
SGPropertyNode *axis = jstree[ jsi->getInputJoystick() ]->getChild("axis", jsi->getInputAxis(), true);
copyProperties(*iter, axis);
axis->setDoubleValue("dead-band", jss->getJoystick(jsi->getInputJoystick())
->getDeadBand(jsi->getInputAxis()));
axis->setDoubleValue("binding/factor", jsi->getInputAxisPositive() ? 1.0 : -1.0);
} else {
iter--;
}
} else {
cout << "Skipping control" << endl;
if ( ! confirmAnswer() )
iter--;
}
cout << endl;
}
PropertyList buttons = templatetree->getChildren("button");
for(PropertyList::iterator iter = buttons.begin(); iter != buttons.end(); iter++) {
cout << "Press the button you wish to use for " << (*iter)->getStringValue("desc") << endl;
cout << "Moving a joystick axis skips this button" << endl;
fflush( stdout );
jsi->getInput();
if (jsi->getInputButton() != -1) {
cout << endl << "Assigned button " << jsi->getInputButton()
<< " on joystick " << jsi->getInputJoystick()
<< " to control " << (*iter)->getStringValue("desc") << endl;
if ( confirmAnswer() ) {
SGPropertyNode *button = jstree[ jsi->getInputJoystick() ]->getChild("button", jsi->getInputButton(), true);
copyProperties(*iter, button);
} else {
iter--;
}
} else {
cout << "Skipping control" << endl;
if (! confirmAnswer())
iter--;
}
cout << endl;
}
cout << "Your joystick settings are in ";
for (int i = 0; i < jss->getNumJoysticks(); i++) {
try {
cout << "js" << i << ".xml";
if (i + 2 < jss->getNumJoysticks())
cout << ", ";
else if (i + 1 < jss->getNumJoysticks())
cout << " and ";
jstree[i]->setStringValue("name", jss->getJoystick(i)->getName());
writeProperties(xfs[i], jstree[i], true);
} catch (sg_io_exception e) {
cout << e.getFormattedMessage ();
}
xfs[i].close();
}
cout << "." << endl << "Check and edit as desired. Once you are happy," << endl
<< "move relevant js<n>.xml files to $FG_ROOT/Input/Joysticks/ (if you didn't use" << endl
<< "an attached controller, you don't need to move the corresponding file)" << endl;
delete jsi;
delete[] xfs;
delete jss;
delete[] jstree;
return 1;
}
char *homedir = ::getenv( "HOME" );
char *hostname = ::getenv( "HOSTNAME" );
bool free_hostname = false;
// Scan the command line options for the specified option and return
// the value.
static string fgScanForOption( const string& option, int argc, char **argv ) {
int i = 1;
if (hostname == NULL)
{
char _hostname[256];
gethostname(_hostname, 256);
hostname = strdup(_hostname);
free_hostname = true;
}
SG_LOG(SG_GENERAL, SG_INFO, "Scanning command line for: " << option );
int len = option.length();
while ( i < argc ) {
SG_LOG( SG_GENERAL, SG_DEBUG, "argv[" << i << "] = " << argv[i] );
string arg = argv[i];
if ( arg.find( option ) == 0 ) {
return arg.substr( len );
}
i++;
}
return "";
}
// Scan the user config files for the specified option and return
// the value.
static string fgScanForOption( const string& option, const string& path ) {
sg_gzifstream in( path );
if ( !in.is_open() ) {
return "";
}
SG_LOG( SG_GENERAL, SG_INFO, "Scanning " << path << " for: " << option );
int len = option.length();
in >> skipcomment;
while ( ! in.eof() ) {
string line;
getline( in, line, '\n' );
// catch extraneous (DOS) line ending character
if ( line[line.length() - 1] < 32 ) {
line = line.substr( 0, line.length()-1 );
}
if ( line.find( option ) == 0 ) {
return line.substr( len );
}
in >> skipcomment;
}
return "";
}
// Scan the user config files for the specified option and return
// the value.
static string fgScanForOption( const string& option ) {
string arg("");
#if defined( unix ) || defined( __CYGWIN__ )
// Next check home directory for .fgfsrc.hostname file
if ( arg.empty() ) {
if ( homedir != NULL ) {
SGPath config( homedir );
config.append( ".fgfsrc" );
config.concat( "." );
config.concat( hostname );
arg = fgScanForOption( option, config.str() );
}
}
#endif
// Next check home directory for .fgfsrc file
if ( arg.empty() ) {
if ( homedir != NULL ) {
SGPath config( homedir );
config.append( ".fgfsrc" );
arg = fgScanForOption( option, config.str() );
}
}
return arg;
}
// Read in configuration (files and command line options) but only set
// fg_root
string getFGRoot ( int argc, char **argv ) {
string root;
// First parse command line options looking for --fg-root=, this
// will override anything specified in a config file
root = fgScanForOption( "--fg-root=", argc, argv);
// Check in one of the user configuration files.
if (root.empty() )
root = fgScanForOption( "--fg-root=" );
// Next check if fg-root is set as an env variable
if ( root.empty() ) {
char *envp = ::getenv( "FG_ROOT" );
if ( envp != NULL ) {
root = envp;
}
}
// Otherwise, default to a random compiled-in location if we can't
// find fg-root any other way.
if ( root.empty() ) {
#if defined( __CYGWIN__ )
root = "../data";
#elif defined( _WIN32 )
root = "..\\data";
#elif defined(OSX_BUNDLE)
/* the following code looks for the base package directly inside
the application bundle. This can be changed fairly easily by
fiddling with the code below. And yes, I know it's ugly and verbose.
*/
CFBundleRef appBundle = CFBundleGetMainBundle();
CFURLRef appUrl = CFBundleCopyBundleURL(appBundle);
CFRelease(appBundle);
// look for a 'data' subdir directly inside the bundle : is there
// a better place? maybe in Resources? I don't know ...
CFURLRef dataDir = CFURLCreateCopyAppendingPathComponent(NULL, appUrl, CFSTR("data"), true);
// now convert down to a path, and the a c-string
CFStringRef path = CFURLCopyFileSystemPath(dataDir, kCFURLPOSIXPathStyle);
root = CFStringGetCStringPtr(path, CFStringGetSystemEncoding());
// tidy up.
CFRelease(appBundle);
CFRelease(dataDir);
CFRelease(path);
#else
root = PKGLIBDIR;
#endif
}
SG_LOG(SG_INPUT, SG_INFO, "fg_root = " << root );
return root;
}
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