// joystick.cxx -- joystick support // // Written by Curtis Olson, started October 1998. // // Copyright (C) 1998 Curtis L. Olson - curt@me.umn.edu // // 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., 675 Mass Ave, Cambridge, MA 02139, USA. // // $Id$ // (Log is kept at end of this file) #ifdef HAVE_CONFIG_H # include #endif #ifdef HAVE_WINDOWS_H # include #endif #include #include #if defined( ENABLE_LINUX_JOYSTICK ) # include #elif defined( ENABLE_GLUT_JOYSTICK ) # include # include #endif #include "joystick.hxx" #if defined( ENABLE_LINUX_JOYSTICK ) // joystick classes static jsJoystick *js0; static jsJoystick *js1; // these will hold the values of the axes static float *js_ax0, *js_ax1; #elif defined( ENABLE_GLUT_JOYSTICK ) // Joystick support using glut -- William Riley -- riley@technologist.com // Joystick fixed values for calibration and scaling static int joy_x_min=1000, /* joy_x_ctr=0, */ joy_x_max=-1000; static int joy_y_min=1000, /* joy_y_ctr=0, */ joy_y_max=-1000; static int joy_z_min=1000, /* joy_z_ctr=0, */ joy_z_max=-1000; static int joy_x_dead_min=100, joy_x_dead_max=-100; static int joy_y_dead_min=100, joy_y_dead_max=-100; static int joy_z_dead_min=100, joy_z_dead_max=-100; #else # error port me: no joystick support #endif #if defined( ENABLE_GLUT_JOYSTICK ) // Function called by glutJoystickFunc(), adjusts read values and // passes them to the necessary aircraft control functions void joystick(unsigned int buttonMask, int js_x, int js_y, int js_z) { double joy_x, joy_y, joy_z; // adjust the values to fgfs's scale and allow a 'dead zone' to // reduce jitter code adapted from joystick.c by Michele // F. America - nomimarketing@mail.telepac.pt if( js_x >= joy_x_dead_min && js_x <= joy_x_dead_max ) { joy_x = 0.0; } else { joy_x = (double)js_x/(double)(joy_x_max-joy_x_min); } if( js_y >= joy_y_dead_min && js_y <= joy_y_dead_max ) { joy_y = 0.0; } else { joy_y = (double)js_y/(double)(joy_y_max-joy_y_min); } if( js_z >= joy_z_dead_min && js_z <= joy_z_dead_max ) { joy_z = 0.0; } else { joy_z = (double)js_z/(double)(joy_z_max-joy_z_min); } // Scale the values up for full range of motion joy_x *= 2.0; joy_y *= 2.0; joy_z = (((joy_z*2.0)+1.0)/2); // Pass the values to the control routines controls.set_elevator( joy_y ); controls.set_aileron( -joy_x ); controls.set_throttle( fgCONTROLS::FG_ALL_ENGINES, joy_z ); } #endif // ENABLE_GLUT_JOYSTICK // Initialize the joystick(s) int fgJoystickInit( void ) { fgPrintf( FG_INPUT, FG_INFO, "Initializing joystick\n"); #if defined( ENABLE_LINUX_JOYSTICK ) js0 = new jsJoystick ( 0 ); js1 = new jsJoystick ( 1 ); if ( js0->notWorking () ) { // not working } else { // allocate storage for axes values js_ax0 = new float [ js0->getNumAxes() ]; // configure js0->setDeadBand( 0, 0.1 ); js0->setDeadBand( 1, 0.1 ); fgPrintf ( FG_INPUT, FG_INFO, " Joystick 0 detected with %d axes\n", js0->getNumAxes() ); } if ( js1->notWorking () ) { // not working } else { // allocate storage for axes values js_ax1 = new float [ js1->getNumAxes() ]; // configure js1->setDeadBand( 0, 0.1 ); js1->setDeadBand( 1, 0.1 ); fgPrintf ( FG_INPUT, FG_INFO, " Joystick 1 detected with %d axes\n", js1->getNumAxes() ); } if ( js0->notWorking() && js1->notWorking() ) { fgPrintf ( FG_INPUT, FG_INFO, " No joysticks detected\n" ); return 0; } #elif defined( ENABLE_GLUT_JOYSTICK ) glutJoystickFunc(joystick, 100); #else # error port me: no joystick support #endif return 1; } #if defined( ENABLE_LINUX_JOYSTICK ) // update the control parameters based on joystick intput int fgJoystickRead( void ) { int b; if ( ! js0->notWorking() ) { js0->read( &b, js_ax0 ) ; controls.set_aileron( js_ax0[0] ); controls.set_elevator( -js_ax0[1] ); } if ( ! js1->notWorking() ) { js1->read( &b, js_ax1 ) ; controls.set_rudder( js_ax1[0] ); controls.set_throttle( fgCONTROLS::FG_ALL_ENGINES, -js_ax1[1] * 1.05 ); } return 1; } #endif // ENABLE_LINUX_JOYSTICK // $Log$ // Revision 1.4 1998/10/27 02:14:32 curt // Changes to support GLUT joystick routines as fall back. // // Revision 1.3 1998/10/25 14:08:44 curt // Turned "struct fgCONTROLS" into a class, with inlined accessor functions. // // Revision 1.2 1998/10/25 10:56:25 curt // Completely rewritten to use Steve Baker's joystick interface class. // // Revision 1.1 1998/10/24 22:28:16 curt // Renamed joystick.[ch] to joystick.[ch]xx // Added js.hxx which is Steve's joystick interface class. // // Revision 1.7 1998/04/25 22:06:29 curt // Edited cvs log messages in source files ... bad bad bad! // // Revision 1.6 1998/04/18 04:14:05 curt // Moved fg_debug.c to it's own library. // // Revision 1.5 1998/02/12 21:59:44 curt // Incorporated code changes contributed by Charlie Hotchkiss // // // Revision 1.4 1998/02/03 23:20:20 curt // Lots of little tweaks to fix various consistency problems discovered by // Solaris' CC. Fixed a bug in fg_debug.c with how the fgPrintf() wrapper // passed arguments along to the real printf(). Also incorporated HUD changes // by Michele America. // // Revision 1.3 1998/01/27 00:47:54 curt // Incorporated Paul Bleisch's new debug message // system and commandline/config file processing code. // // Revision 1.2 1997/12/30 20:47:40 curt // Integrated new event manager with subsystem initializations. // // Revision 1.1 1997/08/29 18:06:54 curt // Initial revision. //