/* Copyright 2003 Hans-Christoph Steiner * * 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: rawjoystick.c,v 1.4 2003-10-20 16:17:52 eighthave Exp $ * * TODO * -make work with multiple joysticks (using SDL_JoyHatEvent.which) * -figure out why it takes so long for [rawjoystick] to start * -get throttle and twist working * -use SDL_PumpEvent rather than SDL_PollEvent in _read */ static char *version = "$Revision: 1.4 $"; #include #include #define DEBUG(x) /* #define DEBUG(x) x */ /* total number of axes and buttons supported by this object */ /* each axis gets a fixed outlet */ #define RAWJOYSTICK_AXES 6 #define RAWJOYSTICK_BUTTONS 9 /* this is the outlet number for the hat switch */ #define RAWJOYSTICK_HATX 3 #define RAWJOYSTICK_HATY 4 /*------------------------------------------------------------------------------ * CLASS DEF */ static t_class *rawjoystick_class; typedef struct _rawjoystick { t_object x_obj; SDL_Joystick *x_joystick; t_int x_devnum; int read_ok; int started; t_outlet *x_axis_out[RAWJOYSTICK_AXES]; t_outlet *x_button_num_out; t_outlet *x_button_val_out; t_clock *x_clock; double x_delaytime; int x_buttons; int x_hats; int x_axes; } t_rawjoystick; /*------------------------------------------------------------------------------ */ static int rawjoystick_close(t_rawjoystick *x) { DEBUG(post("rawjoystick_CLOSE")); if ( SDL_JoystickOpened(x->x_devnum) ) { SDL_JoystickClose(x->x_joystick); return 1; } else { post("ERROR: joystick not closed!!"); return 0; } } static int rawjoystick_open(t_rawjoystick *x) { rawjoystick_close(x); DEBUG(post("rawjoystick_OPEN")); /* open device */ SDL_JoystickEventState(SDL_ENABLE); x->x_joystick = SDL_JoystickOpen(x->x_devnum); /* test if device open */ /* get name of device */ if ( SDL_JoystickOpened(x->x_devnum) ) { post ("Configuring %s",SDL_JoystickName(x->x_devnum)); } else { post("ERROR: joystick not opened!!"); return 0; } x->x_axes = SDL_JoystickNumAxes(x->x_joystick); x->x_hats = SDL_JoystickNumHats(x->x_joystick); x->x_buttons = SDL_JoystickNumButtons(x->x_joystick); post (" device has %i axes, %i hats, and %i buttons.\n",x->x_axes,x->x_hats,x->x_buttons); post ("WARNING * WARNING * WARNING * WARNING * WARNING * WARNING * WARNING"); post ("This object is under development! The interface will change!"); post ("This means inlets, outlets, messages, etc. are not fixed!"); post ("WARNING * WARNING * WARNING * WARNING * WARNING * WARNING * WARNING"); return 1; } /* read the joystick, called through clock */ static void *rawjoystick_read(t_rawjoystick *x) { SDL_Event event; /* DEBUG(post("rawjoystick_READ")); */ if ( ! SDL_JoystickOpened(x->x_devnum) ) { post ("Joystick not open, you need to open it first."); return 0; } /* DEBUG(post("Joystick read: %s",SDL_JoystickName(x->x_devnum));) */ if ( SDL_PollEvent(&event) ) { DEBUG(post("SDL_Event.type: %i",event.type);) DEBUG(post("SDL_JoyAxisEvent.value: %i",event.jaxis.value);) DEBUG(post("SDL_JoyButtonEvent.value: %i",event.jbutton.state);) switch (event.type) { case SDL_JOYAXISMOTION: /* * It might be a good idea to make a for{;;} loop to output the values of * all of the axes everytime in right-to-left order. */ outlet_float (x->x_axis_out[event.jaxis.axis], event.jaxis.value); break; case SDL_JOYHATMOTION: /* this object only supports the first hat switch */ if (event.jhat.hat == 0) { /* X axis */ if (event.jhat.value & SDL_HAT_LEFT) { outlet_float (x->x_axis_out[RAWJOYSTICK_HATX], -1); } else if (event.jhat.value & SDL_HAT_RIGHT) { outlet_float (x->x_axis_out[RAWJOYSTICK_HATX], 1); } else { outlet_float (x->x_axis_out[RAWJOYSTICK_HATX], 0); } /* Y axis */ if (event.jhat.value & SDL_HAT_UP) { outlet_float (x->x_axis_out[RAWJOYSTICK_HATY], -1); } else if (event.jhat.value & SDL_HAT_DOWN) { outlet_float (x->x_axis_out[RAWJOYSTICK_HATY], 1); } else { outlet_float (x->x_axis_out[RAWJOYSTICK_HATY], 0); } } break; case SDL_JOYBUTTONDOWN: outlet_float (x->x_button_val_out, 1); outlet_float (x->x_button_num_out, (float)event.jbutton.button); break; case SDL_JOYBUTTONUP: outlet_float (x->x_button_val_out, 0); outlet_float (x->x_button_num_out, (float)event.jbutton.button); break; default: DEBUG(post("Unhandled event.")); } } if (x->started) clock_delay(x->x_clock, x->x_delaytime); return NULL; } /* Actions */ static void rawjoystick_bang(t_rawjoystick* x) { DEBUG(post("rawjoystick_bang")); } static void rawjoystick_float(t_rawjoystick* x) { DEBUG(post("rawjoystick_float")); } void rawjoystick_start(t_rawjoystick* x) { DEBUG(post("rawjoystick_START")); if ( ( SDL_JoystickOpened(x->x_devnum) ) && ( ! x->started ) ) { x->started = 1; clock_delay(x->x_clock, 0); } } void rawjoystick_stop(t_rawjoystick* x) { DEBUG(post("rawjoystick_STOP");) if ( ( SDL_JoystickOpened(x->x_devnum) ) && ( x->started ) ) { x->started = 0; clock_unset(x->x_clock); } } void rawjoystick_delay(t_rawjoystick* x, t_float f) { DEBUG(post("rawjoystick_DELAY %f",f);) x->x_delaytime = f; } /* Misc setup functions */ static void rawjoystick_free(t_rawjoystick* x) { DEBUG(post("rawjoystick_free")); rawjoystick_stop(x); if ( SDL_JoystickOpened(x->x_devnum)) SDL_JoystickClose(x->x_joystick); SDL_Quit(); clock_free(x->x_clock); } static void *rawjoystick_new(t_float argument) { int i,joystickNumber; t_rawjoystick *x = (t_rawjoystick *)pd_new(rawjoystick_class); DEBUG(post("rawjoystick_NEW")); post("rawHID(e) rawjoystick %s, ", version); /* init vars */ x->x_devnum = 0; x->read_ok = 1; x->started = 0; x->x_delaytime = 5; x->x_clock = clock_new(x, (t_method)rawjoystick_read); /* INIT SDL using joystick layer */ /* Note: Video is required to start Event Loop !! */ if ( SDL_Init(SDL_INIT_VIDEO|SDL_INIT_JOYSTICK) < 0 ) { post("Could not initialize SDL: %s\n", SDL_GetError()); // exit(-1); return (0); /* changed by olafmatt */ } post("%i joysticks were found:", SDL_NumJoysticks() ); for( i=0; i < SDL_NumJoysticks(); i++ ) { post(" %s", SDL_JoystickName(i)); } joystickNumber = (int)argument; if ( (joystickNumber >= 0) && (joystickNumber < SDL_NumJoysticks() ) ) x->x_devnum = joystickNumber; else post("Joystick %i does not exist!",joystickNumber); /* create outlets for each axis */ for (i = 0; i < RAWJOYSTICK_AXES; i++) x->x_axis_out[i] = outlet_new(&x->x_obj, &s_float); /* create outlets for buttons */ x->x_button_num_out = outlet_new(&x->x_obj, &s_float); x->x_button_val_out = outlet_new(&x->x_obj, &s_float); /* Open the device and save settings */ if ( ! rawjoystick_open(x) ) return x; return (x); } void rawjoystick_setup(void) { DEBUG(post("rawjoystick_setup");) rawjoystick_class = class_new(gensym("rawjoystick"), (t_newmethod)rawjoystick_new, (t_method)rawjoystick_free, sizeof(t_rawjoystick),0,A_DEFFLOAT,0); /* add inlet datatype methods */ class_addfloat(rawjoystick_class,(t_method) rawjoystick_float); class_addbang(rawjoystick_class,(t_method) rawjoystick_bang); /* add inlet message methods */ class_addmethod(rawjoystick_class,(t_method) rawjoystick_open,gensym("open"),0); class_addmethod(rawjoystick_class,(t_method) rawjoystick_close,gensym("close"),0); class_addmethod(rawjoystick_class,(t_method) rawjoystick_start,gensym("start"),0); class_addmethod(rawjoystick_class,(t_method) rawjoystick_stop,gensym("stop"),0); class_addmethod(rawjoystick_class,(t_method) rawjoystick_read,gensym("read"),0); class_addmethod(rawjoystick_class,(t_method) rawjoystick_delay,gensym("delay"),A_FLOAT,0); }