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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.
15 * $Source: /cvs/cvsroot/d2x/input/dos_joyc.c,v $
18 * $Date: 2001-01-29 14:03:56 $
20 * Routines for joystick reading.
22 * $Log: not supported by cvs2svn $
23 * Revision 1.2 2001/01/24 04:29:45 bradleyb
24 * changed args_find to FindArg
26 * Revision 1.1.1.2 2001/01/19 03:33:52 bradleyb
27 * Import of d2x-0.0.9-pre1
29 * Revision 1.1.1.1 1999/06/14 21:58:26 donut
30 * Import of d1x 1.37 source.
32 * Revision 1.37 1995/10/07 13:22:31 john
33 * Added new method of reading joystick that allows higher-priority
34 * interrupts to go off.
36 * Revision 1.36 1995/03/30 11:03:40 john
37 * Made -JoyBios read buttons using BIOS.
39 * Revision 1.35 1995/02/14 11:39:25 john
40 * Added polled/bios joystick readers..
42 * Revision 1.34 1995/02/10 17:06:12 john
43 * Fixed bug with plugging in a joystick not getting detected.
45 * Revision 1.33 1995/01/27 16:39:42 john
46 * Made so that if no joystick detected, it wont't
49 * Revision 1.32 1995/01/12 13:16:40 john
50 * Made it so that joystick can't lose an axis
51 * by 1 weird reading. Reading has to occurr during
52 * calibration for this to happen.
54 * Revision 1.31 1994/12/28 15:56:03 john
55 * Fixed bug that refused to read joysticks whose
56 * min,cen,max were less than 100 apart.
58 * Revision 1.30 1994/12/28 15:31:53 john
59 * Added code to read joystick axis not all at one time.
61 * Revision 1.29 1994/12/27 15:44:36 john
62 * Made the joystick timeout be at 1/100th of a second,
63 * regardless of CPU speed.
65 * Revision 1.28 1994/12/04 11:54:54 john
66 * Made stick read at whatever rate the clock is at, not
67 * at 18.2 times/second.
69 * Revision 1.27 1994/11/29 02:25:40 john
70 * Made it so that the scaled reading returns 0
71 * if the calibration factors look funny..
73 * Revision 1.26 1994/11/22 11:08:07 john
74 * Commented out the ARCADE joystick.
76 * Revision 1.25 1994/11/14 19:40:26 john
77 * Fixed bug with no joystick being detected.
79 * Revision 1.24 1994/11/14 19:36:40 john
80 * Took out initial cheapy calibration.
82 * Revision 1.23 1994/11/14 19:13:27 john
83 * Took out the calibration in joy_init
85 * Revision 1.22 1994/10/17 10:09:57 john
86 * Made the state look at last_State, so that a joy_flush
87 * doesn't cause a new down state to be added next reading.
89 * Revision 1.21 1994/10/13 11:36:23 john
90 * Made joy_down_time be kept track of in fixed seconds,
93 * Revision 1.20 1994/10/12 16:58:50 john
94 * Fixed bug w/ previous comment.
96 * Revision 1.19 1994/10/12 16:57:44 john
97 * Added function to set a joystick button's state.
99 * Revision 1.18 1994/10/11 10:20:13 john
100 * Fixed Flightstick Pro/
103 * Revision 1.17 1994/09/29 18:29:20 john
104 * *** empty log message ***
106 * Revision 1.16 1994/09/27 19:17:23 john
107 * Added code so that is joy_init is never called, joystick is not
110 * Revision 1.15 1994/09/22 16:09:23 john
111 * Fixed some virtual memory lockdown problems with timer and
114 * Revision 1.14 1994/09/16 11:44:42 john
115 * Fixed bug with slow joystick.
117 * Revision 1.13 1994/09/16 11:36:15 john
118 * Fixed bug with reading non-present channels.
120 * Revision 1.12 1994/09/15 20:52:48 john
122 * Added support for the Arcade style joystick.
124 * Revision 1.11 1994/09/13 20:04:49 john
125 * Fixed bug with joystick button down_time.
127 * Revision 1.10 1994/09/10 13:48:07 john
128 * Made all 20 buttons read.
130 * Revision 1.9 1994/08/31 09:55:02 john
131 * *** empty log message ***
133 * Revision 1.8 1994/08/29 21:02:14 john
134 * Added joy_set_cal_values...
136 * Revision 1.7 1994/08/29 20:52:17 john
137 * Added better cyberman support; also, joystick calibration
138 * value return funcctiionn,
140 * Revision 1.6 1994/08/24 18:53:12 john
141 * Made Cyberman read like normal mouse; added dpmi module; moved
142 * mouse from assembly to c. Made mouse buttons return time_down.
144 * Revision 1.5 1994/07/14 22:12:23 john
145 * Used intrinsic forms of outp to fix vmm error.
147 * Revision 1.4 1994/07/07 19:52:59 matt
148 * Made joy_init() return success/fail flag
149 * Made joy_init() properly detect a stick if one is plugged in after joy_init()
150 * was called the first time.
152 * Revision 1.3 1994/07/01 10:55:55 john
153 * Fixed some bugs... added support for 4 axis.
155 * Revision 1.2 1994/06/30 20:36:55 john
156 * Revamped joystick code.
158 * Revision 1.1 1994/06/30 15:42:15 john
182 extern int joy_bogus_reading;
183 int JOY_PORT = 513; //201h;
184 int joy_deadzone = 0;
186 int joy_read_stick_asm2( int read_masks, int * event_buffer, int timeout );
187 int joy_read_stick_friendly2( int read_masks, int * event_buffer, int timeout );
188 int joy_read_stick_polled2( int read_masks, int * event_buffer, int timeout );
189 int joy_read_stick_bios2( int read_masks, int * event_buffer, int timeout );
190 int joy_read_buttons_bios2();
191 void joy_read_buttons_bios_end2();
196 // edi = pointer to buffer
197 // returns number of events
199 char joy_installed = 0;
200 char joy_present = 0;
202 typedef struct Button_info {
211 typedef struct Joy_info {
217 Button_info buttons[MAX_BUTTONS];
225 ubyte joy_read_buttons()
227 return ((~(inp(JOY_PORT) >> 4))&0xf);
230 void joy_get_cal_vals(int *axis_min, int *axis_center, int *axis_max)
234 for (i=0; i<4; i++) {
235 axis_min[i] = joystick.axis_min[i];
236 axis_center[i] = joystick.axis_center[i];
237 axis_max[i] = joystick.axis_max[i];
241 void joy_set_cal_vals(int *axis_min, int *axis_center, int *axis_max)
245 for (i=0; i<4; i++) {
246 joystick.axis_min[i] = axis_min[i];
247 joystick.axis_center[i] = axis_center[i];
248 joystick.axis_max[i] = axis_max[i];
253 ubyte joy_get_present_mask() {
254 return joystick.present_mask;
257 void joy_set_timer_rate(int max_value ) {
259 joystick.max_timer = max_value;
263 int joy_get_timer_rate() {
264 return joystick.max_timer;
271 if (!joy_installed) return;
274 for (i=0; i<MAX_BUTTONS; i++ ) {
275 joystick.buttons[i].ignore = 0;
276 joystick.buttons[i].state = 0;
277 joystick.buttons[i].timedown = 0;
278 joystick.buttons[i].downcount = 0;
279 joystick.buttons[i].upcount = 0;
286 void joy_handler(int ticks_this_time) {
289 Button_info * button;
291 // joystick.max_timer = ticks_this_time;
293 if ( joystick.slow_read & JOY_BIOS_READINGS ) {
294 joystick.read_count++;
295 if ( joystick.read_count > 7 ) {
296 joystick.read_count = 0;
297 value = joy_read_buttons_bios2();
298 joystick.last_value = value;
300 value = joystick.last_value;
303 value = joy_read_buttons(); //JOY_READ_BUTTONS;
306 for (i=0; i<MAX_BUTTONS; i++ ) {
307 button = &joystick.buttons[i];
308 if (!button->ignore) {
310 state = (value >> i) & 1;
311 else if (i==(value+4))
316 if ( button->last_state == state ) {
317 if (state) button->timedown += ticks_this_time;
320 button->downcount += state;
323 button->upcount += button->state;
326 button->last_state = state;
332 void joy_handler_end() { // Dummy function to help calculate size of joystick handler function
336 ubyte joy_read_raw_buttons() {
337 if ( joystick.slow_read & JOY_BIOS_READINGS )
338 return joy_read_buttons_bios2();
340 return joy_read_buttons(); //JOY_READ_BUTTONS;
343 void joy_set_slow_reading(int flag)
345 joystick.slow_read |= flag;
349 ubyte joystick_read_raw_axis( ubyte mask, int * axis )
351 ubyte read_masks, org_masks;
352 int t, t1, t2, buffer[4*2+2];
353 int e, i, num_channels, c;
355 axis[0] = 0; axis[1] = 0;
356 axis[2] = 0; axis[3] = 0;
358 if (!joy_installed) return 0;
363 mask &= joystick.present_mask; // Don't read non-present channels
365 return 0; // Don't read if no stick connected.
368 if ( joystick.slow_read & JOY_SLOW_READINGS ) {
369 for (c=0; c<4; c++ ) {
370 if ( mask & (1 << c)) {
371 // Time out at (1/100th of a second)
373 if ( joystick.slow_read & JOY_POLLED_READINGS )
374 num_channels = joy_read_stick_polled2( (1 << c), buffer, 65536 );
375 else if ( joystick.slow_read & JOY_BIOS_READINGS )
376 num_channels = joy_read_stick_bios2( (1 << c), buffer, 65536 );
377 else if ( joystick.slow_read & JOY_FRIENDLY_READINGS )
378 num_channels = joy_read_stick_friendly2( (1 << c), buffer, (1193180/100) );
380 num_channels = joy_read_stick_asm2( (1 << c), buffer, (1193180/100) );
382 if ( num_channels > 0 ) {
386 if ( joystick.slow_read & (JOY_POLLED_READINGS|JOY_BIOS_READINGS) ) {
392 t = t1 + joystick.max_timer - t2;
393 //mprintf( 0, "%d, %d, %d, %d\n", t1, t2, joystick.max_timer, t );
397 if ( e & 1 ) { axis[0] = t; read_masks |= 1; }
398 if ( e & 2 ) { axis[1] = t; read_masks |= 2; }
399 if ( e & 4 ) { axis[2] = t; read_masks |= 4; }
400 if ( e & 8 ) { axis[3] = t; read_masks |= 8; }
405 // Time out at (1/100th of a second)
406 if ( joystick.slow_read & JOY_POLLED_READINGS )
407 num_channels = joy_read_stick_polled2( mask, buffer, 65536 );
408 else if ( joystick.slow_read & JOY_BIOS_READINGS )
409 num_channels = joy_read_stick_bios2( mask, buffer, 65536 );
410 else if ( joystick.slow_read & JOY_FRIENDLY_READINGS )
411 num_channels = joy_read_stick_friendly2( mask, buffer, (1193180/100) );
413 num_channels = joy_read_stick_asm2( mask, buffer, (1193180/100) );
414 //mprintf(( 0, "(%d)\n", num_channels ));
416 for (i=0; i<num_channels; i++ ) {
420 if ( joystick.slow_read & (JOY_POLLED_READINGS|JOY_BIOS_READINGS) ) {
426 t = t1 + joystick.max_timer - t2;
427 //mprintf(( 0, "%d, %d, %d, %d\n", t1, t2, joystick.max_timer, t ));
432 if ( e & 1 ) { axis[0] = t; read_masks |= 1; }
433 if ( e & 2 ) { axis[1] = t; read_masks |= 2; }
434 if ( e & 4 ) { axis[2] = t; read_masks |= 4; }
435 if ( e & 8 ) { axis[3] = t; read_masks |= 8; }
452 // if(FindArg("-joy209"))
453 // use_alt_joyport=1;
454 if(FindArg("-joy209"))
455 JOY_PORT = 521; //209h;
460 for (i=0; i<MAX_BUTTONS; i++ )
461 joystick.buttons[i].last_state = 0;
464 if ( !joy_installed ) {
467 //joystick.max_timer = 65536;
468 joystick.slow_read = 0;
469 joystick.read_count = 0;
470 joystick.last_value = 0;
472 //--------------- lock everything for the virtal memory ----------------------------------
473 if (!dpmi_lock_region ((void near *)joy_read_buttons_bios2, (char *)joy_read_buttons_bios_end2 - (char near *)joy_read_buttons_bios2)) {
474 printf( "Error locking joystick handler (read bios)!\n" );
480 if (!dpmi_lock_region ((void near *)joy_handler, (char *)joy_handler_end - (char near *)joy_handler)) {
481 printf( "Error locking joystick handler!\n" );
485 if (!dpmi_lock_region (&joystick, sizeof(Joy_info))) {
486 printf( "Error locking joystick handler's data!\n" );
490 timer_set_joyhandler(joy_handler);
493 // Do initial cheapy calibration...
494 joystick.present_mask = JOY_ALL_AXIS; // Assume they're all present
496 joystick.present_mask = joystick_read_raw_axis( JOY_ALL_AXIS, temp_axis );
497 } while( joy_bogus_reading );
499 if ( joystick.present_mask & 3 )
509 if (!joy_installed) return;
515 joystick.present_mask = JOY_ALL_AXIS; // Assume they're all present
517 joystick.present_mask = joystick_read_raw_axis( JOY_ALL_AXIS, joystick.axis_min );
518 } while( joy_bogus_reading );
519 if ( joystick.present_mask & 3 )
527 joystick.present_mask = JOY_ALL_AXIS; // Assume they're all present
529 joystick.present_mask = joystick_read_raw_axis( JOY_ALL_AXIS, joystick.axis_max );
530 } while( joy_bogus_reading );
532 if ( joystick.present_mask & 3 )
540 joystick.present_mask = JOY_ALL_AXIS; // Assume they're all present
542 joystick.present_mask = joystick_read_raw_axis( JOY_ALL_AXIS, joystick.axis_center );
543 } while( joy_bogus_reading );
545 if ( joystick.present_mask & 3 )
551 void joy_set_cen_fake(int channel)
555 int minx, maxx, cenx;
559 for (i=0; i<4; i++ ) {
560 if ( (joystick.present_mask & (1<<i)) && (i!=channel) ) {
562 minx += joystick.axis_min[i];
563 maxx += joystick.axis_max[i];
564 cenx += joystick.axis_center[i];
571 joystick.axis_min[channel] = minx;
572 joystick.axis_max[channel] = maxx;
573 joystick.axis_center[channel] = cenx;
576 int joy_get_scaled_reading( int raw, int axn )
580 // Make sure it's calibrated properly.
581 //added/changed on 8/14/98 to allow smaller calibrating sticks to work (by Eivind Brendryen)--was <5
582 if ( joystick.axis_center[axn] - joystick.axis_min[axn] < 2 )
584 if ( joystick.axis_max[axn] - joystick.axis_center[axn] < 2 )
586 //end change - Victor Rachels (by Eivind Brendryen)
588 raw -= joystick.axis_center[axn];
591 d = joystick.axis_center[axn]-joystick.axis_min[axn];
593 d = joystick.axis_max[axn]-joystick.axis_center[axn];
607 //added on 4/13/99 by Victor Rachels to add deadzone control
608 dz = (joy_deadzone) * 6;
609 if ((x > (-1*dz)) && (x < dz))
611 //end this section addition -VR
616 int last_reading[4] = { 0, 0, 0, 0 };
618 void joy_get_pos( int *x, int *y )
623 if ((!joy_installed)||(!joy_present)) { *x=*y=0; return; }
625 flags=joystick_read_raw_axis( JOY_1_X_AXIS+JOY_1_Y_AXIS, axis );
627 if ( joy_bogus_reading ) {
628 axis[0] = last_reading[0];
629 axis[1] = last_reading[1];
630 flags = JOY_1_X_AXIS+JOY_1_Y_AXIS;
632 last_reading[0] = axis[0];
633 last_reading[1] = axis[1];
636 if ( flags & JOY_1_X_AXIS )
637 *x = joy_get_scaled_reading( axis[0], 0 );
641 if ( flags & JOY_1_Y_AXIS )
642 *y = joy_get_scaled_reading( axis[1], 1 );
647 ubyte joy_read_stick( ubyte masks, int *axis )
652 if ((!joy_installed)||(!joy_present)) {
653 axis[0] = 0; axis[1] = 0;
654 axis[2] = 0; axis[3] = 0;
658 flags=joystick_read_raw_axis( masks, raw_axis );
660 if ( joy_bogus_reading ) {
661 axis[0] = last_reading[0];
662 axis[1] = last_reading[1];
663 axis[2] = last_reading[2];
664 axis[3] = last_reading[3];
667 last_reading[0] = axis[0];
668 last_reading[1] = axis[1];
669 last_reading[2] = axis[2];
670 last_reading[3] = axis[3];
673 if ( flags & JOY_1_X_AXIS )
674 axis[0] = joy_get_scaled_reading( raw_axis[0], 0 );
678 if ( flags & JOY_1_Y_AXIS )
679 axis[1] = joy_get_scaled_reading( raw_axis[1], 1 );
683 if ( flags & JOY_2_X_AXIS )
684 axis[2] = joy_get_scaled_reading( raw_axis[2], 2 );
688 if ( flags & JOY_2_Y_AXIS )
689 axis[3] = joy_get_scaled_reading( raw_axis[3], 3 );
699 if ((!joy_installed)||(!joy_present)) return 0;
701 return joy_read_raw_buttons();
704 void joy_get_btn_down_cnt( int *btn0, int *btn1 )
706 if ((!joy_installed)||(!joy_present)) { *btn0=*btn1=0; return; }
709 *btn0 = joystick.buttons[0].downcount;
710 joystick.buttons[0].downcount = 0;
711 *btn1 = joystick.buttons[1].downcount;
712 joystick.buttons[1].downcount = 0;
716 int joy_get_button_state( int btn )
720 if ((!joy_installed)||(!joy_present)) return 0;
722 if ( btn >= MAX_BUTTONS ) return 0;
725 count = joystick.buttons[btn].state;
731 int joy_get_button_up_cnt( int btn )
735 if ((!joy_installed)||(!joy_present)) return 0;
737 if ( btn >= MAX_BUTTONS ) return 0;
740 count = joystick.buttons[btn].upcount;
741 joystick.buttons[btn].upcount = 0;
747 int joy_get_button_down_cnt( int btn )
751 if ((!joy_installed)||(!joy_present)) return 0;
752 if ( btn >= MAX_BUTTONS ) return 0;
755 count = joystick.buttons[btn].downcount;
756 joystick.buttons[btn].downcount = 0;
763 fix joy_get_button_down_time( int btn )
767 if ((!joy_installed)||(!joy_present)) return 0;
768 if ( btn >= MAX_BUTTONS ) return 0;
771 count = joystick.buttons[btn].timedown;
772 joystick.buttons[btn].timedown = 0;
775 return fixmuldiv(count, 65536, 1193180 );
778 void joy_get_btn_up_cnt( int *btn0, int *btn1 )
780 if ((!joy_installed)||(!joy_present)) { *btn0=*btn1=0; return; }
783 *btn0 = joystick.buttons[0].upcount;
784 joystick.buttons[0].upcount = 0;
785 *btn1 = joystick.buttons[1].upcount;
786 joystick.buttons[1].upcount = 0;
790 void joy_set_btn_values( int btn, int state, fix timedown, int downcount, int upcount )
793 joystick.buttons[btn].ignore = 1;
794 joystick.buttons[btn].state = state;
795 joystick.buttons[btn].timedown = fixmuldiv( timedown, 1193180, 65536 );
796 joystick.buttons[btn].downcount = downcount;
797 joystick.buttons[btn].upcount = upcount;
803 if ( joystick.slow_read & JOY_BIOS_READINGS )
804 joystick.last_value = joy_read_buttons_bios2();