arch/dos/joyc.c

   1 /*
   2 THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
   3 SOFTWARE CORPORATION ("PARALLAX").  PARALLAX, IN DISTRIBUTING THE CODE TO
   4 END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
   5 ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
   6 IN USING, DISPLAYING,  AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
   7 SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
   8 FREE PURPOSES.  IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
   9 CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES.  THE END-USER UNDERSTANDS
  10 AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
  11 COPYRIGHT 1993-1998 PARALLAX SOFTWARE CORPORATION.  ALL RIGHTS RESERVED.
  12 */
  13 /*
  14  * $Source: /cvs/cvsroot/d2x/arch/dos/joyc.c,v $
  15  * $Revision: 1.1.1.2 $
  16  * $Author: bradleyb $
  17  * $Date: 2001-01-19 03:33:52 $
  18  *
  19  * Routines for joystick reading.
  20  *
  21  * $Log: not supported by cvs2svn $
  22  * Revision 1.1.1.1  1999/06/14 21:58:26  donut
  23  * Import of d1x 1.37 source.
  24  *
  25  * Revision 1.37  1995/10/07  13:22:31  john
  26  * Added new method of reading joystick that allows higher-priority
  27  * interrupts to go off.
  28  *
  29  * Revision 1.36  1995/03/30  11:03:40  john
  30  * Made -JoyBios read buttons using BIOS.
  31  *
  32  * Revision 1.35  1995/02/14  11:39:25  john
  33  * Added polled/bios joystick readers..
  34  *
  35  * Revision 1.34  1995/02/10  17:06:12  john
  36  * Fixed bug with plugging in a joystick not getting detected.
  37  *
  38  * Revision 1.33  1995/01/27  16:39:42  john
  39  * Made so that if no joystick detected, it wont't
  40  * read buttons.
  41  *
  42  * Revision 1.32  1995/01/12  13:16:40  john
  43  * Made it so that joystick can't lose an axis
  44  * by 1 weird reading. Reading has to occurr during
  45  * calibration for this to happen.
  46  *
  47  * Revision 1.31  1994/12/28  15:56:03  john
  48  * Fixed bug that refused to read joysticks whose
  49  * min,cen,max were less than 100 apart.
  50  *
  51  * Revision 1.30  1994/12/28  15:31:53  john
  52  * Added code to read joystick axis not all at one time.
  53  *
  54  * Revision 1.29  1994/12/27  15:44:36  john
  55  * Made the joystick timeout be at 1/100th of a second,
  56  * regardless of CPU speed.
  57  *
  58  * Revision 1.28  1994/12/04  11:54:54  john
  59  * Made stick read at whatever rate the clock is at, not
  60  * at 18.2 times/second.
  61  *
  62  * Revision 1.27  1994/11/29  02:25:40  john
  63  * Made it so that the scaled reading returns 0
  64  * if the calibration factors look funny..
  65  *
  66  * Revision 1.26  1994/11/22  11:08:07  john
  67  * Commented out the ARCADE joystick.
  68  *
  69  * Revision 1.25  1994/11/14  19:40:26  john
  70  * Fixed bug with no joystick being detected.
  71  *
  72  * Revision 1.24  1994/11/14  19:36:40  john
  73  * Took out initial cheapy calibration.
  74  *
  75  * Revision 1.23  1994/11/14  19:13:27  john
  76  * Took out the calibration in joy_init
  77  *
  78  * Revision 1.22  1994/10/17  10:09:57  john
  79  * Made the state look at last_State, so that a joy_flush
  80  * doesn't cause a new down state to be added next reading.
  81  *
  82  * Revision 1.21  1994/10/13  11:36:23  john
  83  * Made joy_down_time be kept track of in fixed seconds,
  84  * not ticks.
  85  *
  86  * Revision 1.20  1994/10/12  16:58:50  john
  87  * Fixed bug w/ previous comment.
  88  *
  89  * Revision 1.19  1994/10/12  16:57:44  john
  90  * Added function to set a joystick button's state.
  91  *
  92  * Revision 1.18  1994/10/11  10:20:13  john
  93  * Fixed Flightstick Pro/
  94  * ..
  95  *
  96  * Revision 1.17  1994/09/29  18:29:20  john
  97  * *** empty log message ***
  98  *
  99  * Revision 1.16  1994/09/27  19:17:23  john
 100  * Added code so that is joy_init is never called, joystick is not
 101  * used at all.
 102  *
 103  * Revision 1.15  1994/09/22  16:09:23  john
 104  * Fixed some virtual memory lockdown problems with timer and
 105  * joystick.
 106  *
 107  * Revision 1.14  1994/09/16  11:44:42  john
 108  * Fixed bug with slow joystick.
 109  *
 110  * Revision 1.13  1994/09/16  11:36:15  john
 111  * Fixed bug with reading non-present channels.
 112  *
 113  * Revision 1.12  1994/09/15  20:52:48  john
 114  * rme john
 115  * Added support for the Arcade style joystick.
 116  *
 117  * Revision 1.11  1994/09/13  20:04:49  john
 118  * Fixed bug with joystick button down_time.
 119  *
 120  * Revision 1.10  1994/09/10  13:48:07  john
 121  * Made all 20 buttons read.
 122  *
 123  * Revision 1.9  1994/08/31  09:55:02  john
 124  * *** empty log message ***
 125  *
 126  * Revision 1.8  1994/08/29  21:02:14  john
 127  * Added joy_set_cal_values...
 128  *
 129  * Revision 1.7  1994/08/29  20:52:17  john
 130  * Added better cyberman support; also, joystick calibration
 131  * value return funcctiionn,
 132  *
 133  * Revision 1.6  1994/08/24  18:53:12  john
 134  * Made Cyberman read like normal mouse; added dpmi module; moved
 135  * mouse from assembly to c. Made mouse buttons return time_down.
 136  *
 137  * Revision 1.5  1994/07/14  22:12:23  john
 138  * Used intrinsic forms of outp to fix vmm error.
 139  *
 140  * Revision 1.4  1994/07/07  19:52:59  matt
 141  * Made joy_init() return success/fail flag
 142  * Made joy_init() properly detect a stick if one is plugged in after joy_init()
 143  * was called the first time.
 144  *
 145  * Revision 1.3  1994/07/01  10:55:55  john
 146  * Fixed some bugs... added support for 4 axis.
 147  *
 148  * Revision 1.2  1994/06/30  20:36:55  john
 149  * Revamped joystick code.
 150  *
 151  * Revision 1.1  1994/06/30  15:42:15  john
 152  * Initial revision
 153  *
 154  *
 155  */
 156
 157
 158 #include <conf.h>
 159
 160 #include <stdlib.h>
 161 #include <stdio.h>
 162 #include <dos.h>
 163
 164 //#define ARCADE 1
 165
 166 #include "pstypes.h"
 167 #include "mono.h"
 168 #include "joy.h"
 169 #include "u_dpmi.h"
 170 #include "timer.h"
 171
 172 #include "args.h"
 173
 174 extern int joy_bogus_reading;
 175 int JOY_PORT = 513; //201h;
 176 int joy_deadzone = 0;
 177
 178 int joy_read_stick_asm2( int read_masks, int * event_buffer, int timeout );
 179 int joy_read_stick_friendly2( int read_masks, int * event_buffer, int timeout );
 180 int joy_read_stick_polled2( int read_masks, int * event_buffer, int timeout );
 181 int joy_read_stick_bios2( int read_masks, int * event_buffer, int timeout );
 182 int joy_read_buttons_bios2();
 183 void joy_read_buttons_bios_end2();
 184
 185
 186 //In key.c
 187 // ebx = read mask
 188 // edi = pointer to buffer
 189 // returns number of events
 190
 191 char joy_installed = 0;
 192 char joy_present = 0;
 193
 194 typedef struct Button_info {
 195         ubyte           ignore;
 196         ubyte           state;
 197         ubyte           last_state;
 198         int             timedown;
 199         ubyte           downcount;
 200         ubyte           upcount;
 201 } Button_info;
 202
 203 typedef struct Joy_info {
 204         ubyte                   present_mask;
 205         ubyte                   slow_read;
 206         int                     max_timer;
 207         int                     read_count;
 208         ubyte                   last_value;
 209         Button_info     buttons[MAX_BUTTONS];
 210         int                     axis_min[4];
 211         int                     axis_center[4];
 212         int                     axis_max[4];
 213 } Joy_info;
 214
 215 Joy_info joystick;
 216
 217 ubyte joy_read_buttons()
 218 {
 219  return ((~(inp(JOY_PORT) >> 4))&0xf);
 220 }
 221
 222 void joy_get_cal_vals(int *axis_min, int *axis_center, int *axis_max)
 223 {
 224         int i;
 225
 226         for (i=0; i<4; i++)             {
 227                 axis_min[i] = joystick.axis_min[i];
 228                 axis_center[i] = joystick.axis_center[i];
 229                 axis_max[i] = joystick.axis_max[i];
 230         }
 231 }
 232
 233 void joy_set_cal_vals(int *axis_min, int *axis_center, int *axis_max)
 234 {
 235         int i;
 236
 237         for (i=0; i<4; i++)             {
 238                 joystick.axis_min[i] = axis_min[i];
 239                 joystick.axis_center[i] = axis_center[i];
 240                 joystick.axis_max[i] = axis_max[i];
 241         }
 242 }
 243
 244
 245 ubyte joy_get_present_mask()    {
 246         return joystick.present_mask;
 247 }
 248
 249 void joy_set_timer_rate(int max_value ) {
 250         _disable();
 251         joystick.max_timer = max_value;
 252         _enable();
 253 }
 254
 255 int joy_get_timer_rate()        {
 256         return joystick.max_timer;
 257 }
 258
 259
 260 void joy_flush()        {
 261         int i;
 262
 263         if (!joy_installed) return;
 264
 265         _disable();
 266         for (i=0; i<MAX_BUTTONS; i++ )  {
 267                 joystick.buttons[i].ignore = 0;
 268                 joystick.buttons[i].state = 0;
 269                 joystick.buttons[i].timedown = 0;
 270                 joystick.buttons[i].downcount = 0;
 271                 joystick.buttons[i].upcount = 0;
 272         }
 273         _enable();
 274
 275 }
 276
 277 #pragma off (check_stack)
 278
 279 void joy_handler(int ticks_this_time)   {
 280         ubyte value;
 281         int i, state;
 282         Button_info * button;
 283
 284 //      joystick.max_timer = ticks_this_time;
 285
 286         if ( joystick.slow_read & JOY_BIOS_READINGS )           {
 287                 joystick.read_count++;
 288                 if ( joystick.read_count > 7 )  {
 289                         joystick.read_count = 0;
 290                         value = joy_read_buttons_bios2();
 291                         joystick.last_value = value;
 292                 } else {
 293                         value = joystick.last_value;
 294                 }
 295         } else {
 296                 value = joy_read_buttons(); //JOY_READ_BUTTONS;
 297         }
 298
 299         for (i=0; i<MAX_BUTTONS; i++ )  {
 300                 button = &joystick.buttons[i];
 301                 if (!button->ignore) {
 302                         if ( i < 5 )
 303                                 state = (value >> i) & 1;
 304                         else if (i==(value+4))
 305                                 state = 1;
 306                         else
 307                                 state = 0;
 308
 309                         if ( button->last_state == state )      {
 310                                 if (state) button->timedown += ticks_this_time;
 311                         } else {
 312                                 if (state)      {
 313                                         button->downcount += state;
 314                                         button->state = 1;
 315                                 } else {
 316                                         button->upcount += button->state;
 317                                         button->state = 0;
 318                                 }
 319                                 button->last_state = state;
 320                         }
 321                 }
 322         }
 323 }
 324
 325 void joy_handler_end()  {               // Dummy function to help calculate size of joystick handler function
 326 }
 327
 328 #pragma off (check_stack)
 329
 330 ubyte joy_read_raw_buttons()    {
 331         if ( joystick.slow_read & JOY_BIOS_READINGS )
 332                 return joy_read_buttons_bios2();
 333         else
 334                 return joy_read_buttons(); //JOY_READ_BUTTONS;
 335 }
 336
 337 void joy_set_slow_reading(int flag)
 338 {
 339         joystick.slow_read |= flag;
 340         joy_set_cen();
 341 }
 342
 343 ubyte joystick_read_raw_axis( ubyte mask, int * axis )
 344 {
 345         ubyte read_masks, org_masks;
 346         int t, t1, t2, buffer[4*2+2];
 347         int e, i, num_channels, c;
 348
 349         axis[0] = 0; axis[1] = 0;
 350         axis[2] = 0; axis[3] = 0;
 351
 352         if (!joy_installed) return 0;
 353
 354         read_masks = 0;
 355         org_masks = mask;
 356
 357         mask &= joystick.present_mask;                  // Don't read non-present channels
 358         if ( mask==0 )  {
 359                 return 0;               // Don't read if no stick connected.
 360         }
 361
 362         if ( joystick.slow_read & JOY_SLOW_READINGS )   {
 363                 for (c=0; c<4; c++ )    {
 364                         if ( mask & (1 << c))   {
 365                                 // Time out at  (1/100th of a second)
 366
 367                                 if ( joystick.slow_read & JOY_POLLED_READINGS )
 368                                         num_channels = joy_read_stick_polled2( (1 << c), buffer, 65536 );
 369                                 else if ( joystick.slow_read & JOY_BIOS_READINGS )
 370                                         num_channels = joy_read_stick_bios2( (1 << c), buffer, 65536 );
 371                                 else if ( joystick.slow_read & JOY_FRIENDLY_READINGS )
 372                                         num_channels = joy_read_stick_friendly2( (1 << c), buffer, (1193180/100) );
 373                                 else
 374                                         num_channels = joy_read_stick_asm2( (1 << c), buffer, (1193180/100) );
 375
 376                                 if ( num_channels > 0 ) {
 377                                         t1 = buffer[0];
 378                                         e = buffer[1];
 379                                         t2 = buffer[2];
 380                                         if ( joystick.slow_read & (JOY_POLLED_READINGS|JOY_BIOS_READINGS) )     {
 381                                                 t = t2 - t1;
 382                                         } else {
 383                                                 if ( t1 > t2 )
 384                                                         t = t1 - t2;
 385                                                 else                            {
 386                                                         t = t1 + joystick.max_timer - t2;
 387                                                         //mprintf( 0, "%d, %d, %d, %d\n", t1, t2, joystick.max_timer, t );
 388                                                 }
 389                                         }
 390
 391                                         if ( e & 1 ) { axis[0] = t; read_masks |= 1; }
 392                                         if ( e & 2 ) { axis[1] = t; read_masks |= 2; }
 393                                         if ( e & 4 ) { axis[2] = t; read_masks |= 4; }
 394                                         if ( e & 8 ) { axis[3] = t; read_masks |= 8; }
 395                                 }
 396                         }
 397                 }
 398         } else {
 399                 // Time out at  (1/100th of a second)
 400                 if ( joystick.slow_read & JOY_POLLED_READINGS )
 401                         num_channels = joy_read_stick_polled2( mask, buffer, 65536 );
 402                 else if ( joystick.slow_read & JOY_BIOS_READINGS )
 403                         num_channels = joy_read_stick_bios2( mask, buffer, 65536 );
 404                 else if ( joystick.slow_read & JOY_FRIENDLY_READINGS )
 405                         num_channels = joy_read_stick_friendly2( mask, buffer, (1193180/100) );
 406                 else
 407                         num_channels = joy_read_stick_asm2( mask, buffer, (1193180/100) );
 408                 //mprintf(( 0, "(%d)\n", num_channels ));
 409
 410                 for (i=0; i<num_channels; i++ ) {
 411                         t1 = buffer[0];
 412                         t2 = buffer[i*2+2];
 413
 414                         if ( joystick.slow_read & (JOY_POLLED_READINGS|JOY_BIOS_READINGS) )     {
 415                                 t = t2 - t1;
 416                         } else {
 417                                 if ( t1 > t2 )
 418                                         t = t1 - t2;
 419                                 else                            {
 420                                         t = t1 + joystick.max_timer - t2;
 421                                         //mprintf(( 0, "%d, %d, %d, %d\n", t1, t2, joystick.max_timer, t ));
 422                                 }
 423                         }
 424                         e = buffer[i*2+1];
 425
 426                         if ( e & 1 ) { axis[0] = t; read_masks |= 1; }
 427                         if ( e & 2 ) { axis[1] = t; read_masks |= 2; }
 428                         if ( e & 4 ) { axis[2] = t; read_masks |= 4; }
 429                         if ( e & 8 ) { axis[3] = t; read_masks |= 8; }
 430                 }
 431
 432         }
 433
 434         return read_masks;
 435 }
 436
 437 #ifdef __GNUC__
 438 #define near
 439 #endif
 440
 441 int joy_init()
 442 {
 443         int i;
 444         int temp_axis[4];
 445
 446 //        if(args_find("-joy209"))
 447 //         use_alt_joyport=1;
 448         if(args_find("-joy209"))
 449          JOY_PORT = 521;  //209h;
 450
 451         joy_flush();
 452
 453         _disable();
 454         for (i=0; i<MAX_BUTTONS; i++ )
 455                 joystick.buttons[i].last_state = 0;
 456         _enable();
 457
 458         if ( !joy_installed )   {
 459                 joy_present = 0;
 460                 joy_installed = 1;
 461                 //joystick.max_timer = 65536;
 462                 joystick.slow_read = 0;
 463                 joystick.read_count = 0;
 464                 joystick.last_value = 0;
 465
 466                 //--------------- lock everything for the virtal memory ----------------------------------
 467                 if (!dpmi_lock_region ((void near *)joy_read_buttons_bios2, (char *)joy_read_buttons_bios_end2 - (char near *)joy_read_buttons_bios2))   {
 468                         printf( "Error locking joystick handler (read bios)!\n" );
 469                         exit(1);
 470                 }
 471
 472
 473
 474                 if (!dpmi_lock_region ((void near *)joy_handler, (char *)joy_handler_end - (char near *)joy_handler))   {
 475                         printf( "Error locking joystick handler!\n" );
 476                         exit(1);
 477                 }
 478
 479                 if (!dpmi_lock_region (&joystick, sizeof(Joy_info)))    {
 480                         printf( "Error locking joystick handler's data!\n" );
 481                         exit(1);
 482                 }
 483
 484                 timer_set_joyhandler(joy_handler);
 485         }
 486
 487         // Do initial cheapy calibration...
 488         joystick.present_mask = JOY_ALL_AXIS;           // Assume they're all present
 489         do      {
 490                 joystick.present_mask = joystick_read_raw_axis( JOY_ALL_AXIS, temp_axis );
 491         } while( joy_bogus_reading );
 492
 493         if ( joystick.present_mask & 3 )
 494                 joy_present = 1;
 495         else
 496                 joy_present = 0;
 497
 498         return joy_present;
 499 }
 500
 501 void joy_close()
 502 {
 503         if (!joy_installed) return;
 504         joy_installed = 0;
 505 }
 506
 507 void joy_set_ul()
 508 {
 509         joystick.present_mask = JOY_ALL_AXIS;           // Assume they're all present
 510         do      {
 511                 joystick.present_mask = joystick_read_raw_axis( JOY_ALL_AXIS, joystick.axis_min );
 512         } while( joy_bogus_reading );
 513         if ( joystick.present_mask & 3 )
 514                 joy_present = 1;
 515         else
 516                 joy_present = 0;
 517 }
 518
 519 void joy_set_lr()
 520 {
 521         joystick.present_mask = JOY_ALL_AXIS;           // Assume they're all present
 522         do {
 523                 joystick.present_mask = joystick_read_raw_axis( JOY_ALL_AXIS, joystick.axis_max );
 524         } while( joy_bogus_reading );
 525
 526         if ( joystick.present_mask & 3 )
 527                 joy_present = 1;
 528         else
 529                 joy_present = 0;
 530 }
 531
 532 void joy_set_cen()
 533 {
 534         joystick.present_mask = JOY_ALL_AXIS;           // Assume they're all present
 535         do {
 536                 joystick.present_mask = joystick_read_raw_axis( JOY_ALL_AXIS, joystick.axis_center );
 537         } while( joy_bogus_reading );
 538
 539         if ( joystick.present_mask & 3 )
 540                 joy_present = 1;
 541         else
 542                 joy_present = 0;
 543 }
 544
 545 void joy_set_cen_fake(int channel)
 546 {
 547
 548         int i,n=0;
 549         int minx, maxx, cenx;
 550
 551         minx=maxx=cenx=0;
 552
 553         for (i=0; i<4; i++ )    {
 554                 if ( (joystick.present_mask & (1<<i)) && (i!=channel) ) {
 555                         n++;
 556                         minx += joystick.axis_min[i];
 557                         maxx += joystick.axis_max[i];
 558                         cenx += joystick.axis_center[i];
 559                 }
 560         }
 561         minx /= n;
 562         maxx /= n;
 563         cenx /= n;
 564
 565         joystick.axis_min[channel] = minx;
 566         joystick.axis_max[channel] = maxx;
 567         joystick.axis_center[channel] = cenx;
 568 }
 569
 570 int joy_get_scaled_reading( int raw, int axn )
 571 {
 572  int x, d, dz;
 573
 574  // Make sure it's calibrated properly.
 575 //added/changed on 8/14/98 to allow smaller calibrating sticks to work (by Eivind Brendryen)--was <5
 576    if ( joystick.axis_center[axn] - joystick.axis_min[axn] < 2 )
 577     return 0;
 578    if ( joystick.axis_max[axn] - joystick.axis_center[axn] < 2 )
 579     return 0;
 580 //end change - Victor Rachels  (by Eivind Brendryen)
 581
 582   raw -= joystick.axis_center[axn];
 583
 584    if ( raw < 0 )
 585     d = joystick.axis_center[axn]-joystick.axis_min[axn];
 586    else
 587     d = joystick.axis_max[axn]-joystick.axis_center[axn];
 588
 589
 590    if ( d )
 591     x = (raw << 7) / d;
 592    else
 593     x = 0;
 594
 595
 596    if ( x < -128 )
 597     x = -128;
 598    if ( x > 127 )
 599     x = 127;
 600
 601 //added on 4/13/99 by Victor Rachels to add deadzone control
 602   dz =  (joy_deadzone) * 6;
 603    if ((x > (-1*dz)) && (x < dz))
 604     x = 0;
 605 //end this section addition -VR
 606
 607   return x;
 608 }
 609
 610 int last_reading[4] = { 0, 0, 0, 0 };
 611
 612 void joy_get_pos( int *x, int *y )
 613 {
 614         ubyte flags;
 615         int axis[4];
 616
 617         if ((!joy_installed)||(!joy_present)) { *x=*y=0; return; }
 618
 619         flags=joystick_read_raw_axis( JOY_1_X_AXIS+JOY_1_Y_AXIS, axis );
 620
 621         if ( joy_bogus_reading )        {
 622                 axis[0] = last_reading[0];
 623                 axis[1] = last_reading[1];
 624                 flags = JOY_1_X_AXIS+JOY_1_Y_AXIS;
 625         } else {
 626                 last_reading[0] = axis[0];
 627                 last_reading[1] = axis[1];
 628         }
 629
 630         if ( flags & JOY_1_X_AXIS )
 631                 *x = joy_get_scaled_reading( axis[0], 0 );
 632         else
 633                 *x = 0;
 634
 635         if ( flags & JOY_1_Y_AXIS )
 636                 *y = joy_get_scaled_reading( axis[1], 1 );
 637         else
 638                 *y = 0;
 639 }
 640
 641 ubyte joy_read_stick( ubyte masks, int *axis )
 642 {
 643         ubyte flags;
 644         int raw_axis[4];
 645
 646         if ((!joy_installed)||(!joy_present)) {
 647                 axis[0] = 0; axis[1] = 0;
 648                 axis[2] = 0; axis[3] = 0;
 649                 return 0;
 650         }
 651
 652         flags=joystick_read_raw_axis( masks, raw_axis );
 653
 654         if ( joy_bogus_reading )        {
 655                 axis[0] = last_reading[0];
 656                 axis[1] = last_reading[1];
 657                 axis[2] = last_reading[2];
 658                 axis[3] = last_reading[3];
 659                 flags = masks;
 660         } else {
 661                 last_reading[0] = axis[0];
 662                 last_reading[1] = axis[1];
 663                 last_reading[2] = axis[2];
 664                 last_reading[3] = axis[3];
 665         }
 666
 667         if ( flags & JOY_1_X_AXIS )
 668                 axis[0] = joy_get_scaled_reading( raw_axis[0], 0 );
 669         else
 670                 axis[0] = 0;
 671
 672         if ( flags & JOY_1_Y_AXIS )
 673                 axis[1] = joy_get_scaled_reading( raw_axis[1], 1 );
 674         else
 675                 axis[1] = 0;
 676
 677         if ( flags & JOY_2_X_AXIS )
 678                 axis[2] = joy_get_scaled_reading( raw_axis[2], 2 );
 679         else
 680                 axis[2] = 0;
 681
 682         if ( flags & JOY_2_Y_AXIS )
 683                 axis[3] = joy_get_scaled_reading( raw_axis[3], 3 );
 684         else
 685                 axis[3] = 0;
 686
 687         return flags;
 688 }
 689
 690
 691 int joy_get_btns()
 692 {
 693         if ((!joy_installed)||(!joy_present)) return 0;
 694
 695         return joy_read_raw_buttons();
 696 }
 697
 698 void joy_get_btn_down_cnt( int *btn0, int *btn1 )
 699 {
 700         if ((!joy_installed)||(!joy_present)) { *btn0=*btn1=0; return; }
 701
 702         _disable();
 703         *btn0 = joystick.buttons[0].downcount;
 704         joystick.buttons[0].downcount = 0;
 705         *btn1 = joystick.buttons[1].downcount;
 706         joystick.buttons[1].downcount = 0;
 707         _enable();
 708 }
 709
 710 int joy_get_button_state( int btn )
 711 {
 712         int count;
 713
 714         if ((!joy_installed)||(!joy_present)) return 0;
 715
 716         if ( btn >= MAX_BUTTONS ) return 0;
 717
 718         _disable();
 719         count = joystick.buttons[btn].state;
 720         _enable();
 721
 722         return  count;
 723 }
 724
 725 int joy_get_button_up_cnt( int btn )
 726 {
 727         int count;
 728
 729         if ((!joy_installed)||(!joy_present)) return 0;
 730
 731         if ( btn >= MAX_BUTTONS ) return 0;
 732
 733         _disable();
 734         count = joystick.buttons[btn].upcount;
 735         joystick.buttons[btn].upcount = 0;
 736         _enable();
 737
 738         return count;
 739 }
 740
 741 int joy_get_button_down_cnt( int btn )
 742 {
 743         int count;
 744
 745         if ((!joy_installed)||(!joy_present)) return 0;
 746         if ( btn >= MAX_BUTTONS ) return 0;
 747
 748         _disable();
 749         count = joystick.buttons[btn].downcount;
 750         joystick.buttons[btn].downcount = 0;
 751         _enable();
 752
 753         return count;
 754 }
 755
 756
 757 fix joy_get_button_down_time( int btn )
 758 {
 759         fix count;
 760
 761         if ((!joy_installed)||(!joy_present)) return 0;
 762         if ( btn >= MAX_BUTTONS ) return 0;
 763
 764         _disable();
 765         count = joystick.buttons[btn].timedown;
 766         joystick.buttons[btn].timedown = 0;
 767         _enable();
 768
 769         return fixmuldiv(count, 65536, 1193180 );
 770 }
 771
 772 void joy_get_btn_up_cnt( int *btn0, int *btn1 )
 773 {
 774         if ((!joy_installed)||(!joy_present)) { *btn0=*btn1=0; return; }
 775
 776         _disable();
 777         *btn0 = joystick.buttons[0].upcount;
 778         joystick.buttons[0].upcount = 0;
 779         *btn1 = joystick.buttons[1].upcount;
 780         joystick.buttons[1].upcount = 0;
 781         _enable();
 782 }
 783
 784 void joy_set_btn_values( int btn, int state, fix timedown, int downcount, int upcount )
 785 {
 786         _disable();
 787         joystick.buttons[btn].ignore = 1;
 788         joystick.buttons[btn].state = state;
 789         joystick.buttons[btn].timedown = fixmuldiv( timedown, 1193180, 65536 );
 790         joystick.buttons[btn].downcount = downcount;
 791         joystick.buttons[btn].upcount = upcount;
 792         _enable();
 793 }
 794
 795 void joy_poll()
 796 {
 797         if ( joystick.slow_read & JOY_BIOS_READINGS )
 798                 joystick.last_value = joy_read_buttons_bios2();
 799 }