arch/sdl/joy.c

   1 /*
   2  * $Source: /cvs/cvsroot/d2x/arch/sdl/joy.c,v $
   3  * $Revision: 1.2 $
   4  * $Author: bradleyb $
   5  * $Date: 2001-12-03 02:43:02 $
   6  *
   7  * SDL joystick support
   8  *
   9  * $Log: not supported by cvs2svn $
  10  * Revision 1.1  2001/10/24 09:25:05  bradleyb
  11  * Moved input stuff to arch subdirs, as in d1x.
  12  *
  13  * Revision 1.1  2001/10/10 03:01:29  bradleyb
  14  * Replacing win32 joystick (broken) with SDL joystick (stubs)
  15  *
  16  *
  17  */
  18
  19 #ifdef HAVE_CONFIG_H
  20 #include <conf.h>
  21 #endif
  22
  23 #include <SDL/SDL.h>
  24
  25 #include "joy.h"
  26 #include "error.h"
  27 #include "timer.h"
  28 #include "console.h"
  29
  30 #define MAX_JOYSTICKS 16
  31 #define MAX_AXES 32
  32
  33 #define MAX_AXES_PER_JOYSTICK 8
  34 #define MAX_BUTTONS_PER_JOYSTICK 16
  35
  36 char joy_present = 0;
  37 int num_joysticks = 0;
  38
  39 struct joybutton {
  40         int state;
  41         fix time_went_down;
  42         fix time_held_down;
  43         int num_downs;
  44         int num_ups;
  45 };
  46
  47 static struct joyinfo {
  48         int n_axes;
  49         int n_buttons;
  50         int axes[MAX_AXES];
  51         struct joybutton buttons[MAX_BUTTONS];
  52 } Joystick;
  53
  54 static struct {
  55         SDL_Joystick *handle;
  56         int n_axes;
  57         int n_buttons;
  58         int axis_map[MAX_AXES_PER_JOYSTICK];
  59         int button_map[MAX_BUTTONS_PER_JOYSTICK];
  60 } SDL_Joysticks[MAX_JOYSTICKS];
  61
  62 void joy_button_handler(SDL_JoyButtonEvent *jbe)
  63 {
  64         int button;
  65
  66         button = SDL_Joysticks[jbe->which].button_map[jbe->button];
  67
  68         Joystick.buttons[button].state = jbe->state;
  69
  70         switch (jbe->type) {
  71         case SDL_JOYBUTTONDOWN:
  72                 Joystick.buttons[button].time_went_down
  73                         = timer_get_fixed_seconds();
  74                 Joystick.buttons[button].num_downs++;
  75                 break;
  76         case SDL_JOYBUTTONUP:
  77                 Joystick.buttons[button].time_held_down
  78                         += timer_get_fixed_seconds()
  79                         - Joystick.buttons[button].time_went_down;
  80                 Joystick.buttons[button].num_ups++;
  81                 break;
  82         }
  83 }
  84
  85 void joy_axis_handler(SDL_JoyAxisEvent *jae)
  86 {
  87         int axis;
  88
  89         axis = SDL_Joysticks[jae->which].axis_map[jae->axis];
  90
  91         Joystick.axes[axis] = jae->value;
  92 }
  93
  94
  95 /* ----------------------------------------------- */
  96
  97 int joy_init()
  98 {
  99         int i,j,n;
 100
 101         memset(&Joystick,0,sizeof(Joystick));
 102
 103         n = SDL_NumJoysticks();
 104
 105         con_printf(CON_VERBOSE, "Joystick: found %d joysticks\n", n);
 106         for (i = 0; i < n; i++) {
 107                 con_printf(CON_VERBOSE, "Joystick %d: %s\n", i, SDL_JoystickName(i));
 108                 SDL_Joysticks[num_joysticks].handle = SDL_JoystickOpen(i);
 109                 if (SDL_Joysticks[num_joysticks].handle) {
 110                         joy_present = 1;
 111                         SDL_Joysticks[num_joysticks].n_axes
 112                                 = SDL_JoystickNumAxes(SDL_Joysticks[num_joysticks].handle);
 113                         SDL_Joysticks[num_joysticks].n_buttons
 114                                 = SDL_JoystickNumButtons(SDL_Joysticks[num_joysticks].handle);
 115                         con_printf(CON_VERBOSE, "Joystick: %d axes\n", SDL_Joysticks[num_joysticks].n_axes);
 116                         con_printf(CON_VERBOSE, "Joystick: %d buttons\n", SDL_Joysticks[num_joysticks].n_buttons);
 117                         for (j=0; j < SDL_Joysticks[num_joysticks].n_axes; j++)
 118                                 SDL_Joysticks[num_joysticks].axis_map[j] = Joystick.n_axes++;
 119                         for (j=0; j < SDL_Joysticks[num_joysticks].n_buttons; j++)
 120                                 SDL_Joysticks[num_joysticks].button_map[j] = Joystick.n_buttons++;
 121                         num_joysticks++;
 122                 } else
 123                         con_printf(CON_VERBOSE, "Joystick: initialization failed!\n");
 124         }
 125
 126         return joy_present;
 127 }
 128
 129 void joy_close()
 130 {
 131         while (num_joysticks)
 132                 SDL_JoystickClose(SDL_Joysticks[--num_joysticks].handle);
 133 }
 134
 135 void joy_get_pos(int *x, int *y)
 136 {
 137         *x = Joystick.axes[0] << 8;
 138         *y = Joystick.axes[1] << 8;
 139 }
 140
 141 int joy_get_btns()
 142 {
 143         return 0;
 144 }
 145
 146 int joy_get_button_down_cnt( int btn )
 147 {
 148         return 0;
 149 }
 150
 151 fix joy_get_button_down_time(int btn)
 152 {
 153         fix time;
 154
 155         time = Joystick.buttons[btn].time_held_down;
 156         Joystick.buttons[btn].time_held_down = 0;
 157
 158         return time;
 159 }
 160
 161 ubyte joystick_read_raw_axis( ubyte mask, int * axis )
 162 {
 163         return 0;
 164 }
 165
 166 void joy_flush()
 167 {
 168 }
 169
 170 int joy_get_button_state( int btn )
 171 {
 172         return 0;
 173 }
 174
 175 void joy_get_cal_vals(int *axis_min, int *axis_center, int *axis_max)
 176 {
 177 }
 178
 179 void joy_set_cal_vals(int *axis_min, int *axis_center, int *axis_max)
 180 {
 181 }
 182
 183 int joy_get_scaled_reading( int raw, int axn )
 184 {
 185         return 0;
 186 }
 187
 188 void joy_set_slow_reading( int flag )
 189 {
 190 }