2 THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
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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.
14 * $Source: /cvs/cvsroot/d2x/arch/dos/joyc.c,v $
15 * $Revision: 1.1.1.2 $
17 * $Date: 2001-01-19 03:33:52 $
19 * Routines for joystick reading.
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.
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.
29 * Revision 1.36 1995/03/30 11:03:40 john
30 * Made -JoyBios read buttons using BIOS.
32 * Revision 1.35 1995/02/14 11:39:25 john
33 * Added polled/bios joystick readers..
35 * Revision 1.34 1995/02/10 17:06:12 john
36 * Fixed bug with plugging in a joystick not getting detected.
38 * Revision 1.33 1995/01/27 16:39:42 john
39 * Made so that if no joystick detected, it wont't
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.
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.
51 * Revision 1.30 1994/12/28 15:31:53 john
52 * Added code to read joystick axis not all at one time.
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.
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.
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..
66 * Revision 1.26 1994/11/22 11:08:07 john
67 * Commented out the ARCADE joystick.
69 * Revision 1.25 1994/11/14 19:40:26 john
70 * Fixed bug with no joystick being detected.
72 * Revision 1.24 1994/11/14 19:36:40 john
73 * Took out initial cheapy calibration.
75 * Revision 1.23 1994/11/14 19:13:27 john
76 * Took out the calibration in joy_init
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.
82 * Revision 1.21 1994/10/13 11:36:23 john
83 * Made joy_down_time be kept track of in fixed seconds,
86 * Revision 1.20 1994/10/12 16:58:50 john
87 * Fixed bug w/ previous comment.
89 * Revision 1.19 1994/10/12 16:57:44 john
90 * Added function to set a joystick button's state.
92 * Revision 1.18 1994/10/11 10:20:13 john
93 * Fixed Flightstick Pro/
96 * Revision 1.17 1994/09/29 18:29:20 john
97 * *** empty log message ***
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
103 * Revision 1.15 1994/09/22 16:09:23 john
104 * Fixed some virtual memory lockdown problems with timer and
107 * Revision 1.14 1994/09/16 11:44:42 john
108 * Fixed bug with slow joystick.
110 * Revision 1.13 1994/09/16 11:36:15 john
111 * Fixed bug with reading non-present channels.
113 * Revision 1.12 1994/09/15 20:52:48 john
115 * Added support for the Arcade style joystick.
117 * Revision 1.11 1994/09/13 20:04:49 john
118 * Fixed bug with joystick button down_time.
120 * Revision 1.10 1994/09/10 13:48:07 john
121 * Made all 20 buttons read.
123 * Revision 1.9 1994/08/31 09:55:02 john
124 * *** empty log message ***
126 * Revision 1.8 1994/08/29 21:02:14 john
127 * Added joy_set_cal_values...
129 * Revision 1.7 1994/08/29 20:52:17 john
130 * Added better cyberman support; also, joystick calibration
131 * value return funcctiionn,
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.
137 * Revision 1.5 1994/07/14 22:12:23 john
138 * Used intrinsic forms of outp to fix vmm error.
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.
145 * Revision 1.3 1994/07/01 10:55:55 john
146 * Fixed some bugs... added support for 4 axis.
148 * Revision 1.2 1994/06/30 20:36:55 john
149 * Revamped joystick code.
151 * Revision 1.1 1994/06/30 15:42:15 john
174 extern int joy_bogus_reading;
175 int JOY_PORT = 513; //201h;
176 int joy_deadzone = 0;
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();
188 // edi = pointer to buffer
189 // returns number of events
191 char joy_installed = 0;
192 char joy_present = 0;
194 typedef struct Button_info {
203 typedef struct Joy_info {
209 Button_info buttons[MAX_BUTTONS];
217 ubyte joy_read_buttons()
219 return ((~(inp(JOY_PORT) >> 4))&0xf);
222 void joy_get_cal_vals(int *axis_min, int *axis_center, int *axis_max)
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];
233 void joy_set_cal_vals(int *axis_min, int *axis_center, int *axis_max)
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];
245 ubyte joy_get_present_mask() {
246 return joystick.present_mask;
249 void joy_set_timer_rate(int max_value ) {
251 joystick.max_timer = max_value;
255 int joy_get_timer_rate() {
256 return joystick.max_timer;
263 if (!joy_installed) return;
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;
277 #pragma off (check_stack)
279 void joy_handler(int ticks_this_time) {
282 Button_info * button;
284 // joystick.max_timer = ticks_this_time;
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;
293 value = joystick.last_value;
296 value = joy_read_buttons(); //JOY_READ_BUTTONS;
299 for (i=0; i<MAX_BUTTONS; i++ ) {
300 button = &joystick.buttons[i];
301 if (!button->ignore) {
303 state = (value >> i) & 1;
304 else if (i==(value+4))
309 if ( button->last_state == state ) {
310 if (state) button->timedown += ticks_this_time;
313 button->downcount += state;
316 button->upcount += button->state;
319 button->last_state = state;
325 void joy_handler_end() { // Dummy function to help calculate size of joystick handler function
328 #pragma off (check_stack)
330 ubyte joy_read_raw_buttons() {
331 if ( joystick.slow_read & JOY_BIOS_READINGS )
332 return joy_read_buttons_bios2();
334 return joy_read_buttons(); //JOY_READ_BUTTONS;
337 void joy_set_slow_reading(int flag)
339 joystick.slow_read |= flag;
343 ubyte joystick_read_raw_axis( ubyte mask, int * axis )
345 ubyte read_masks, org_masks;
346 int t, t1, t2, buffer[4*2+2];
347 int e, i, num_channels, c;
349 axis[0] = 0; axis[1] = 0;
350 axis[2] = 0; axis[3] = 0;
352 if (!joy_installed) return 0;
357 mask &= joystick.present_mask; // Don't read non-present channels
359 return 0; // Don't read if no stick connected.
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)
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) );
374 num_channels = joy_read_stick_asm2( (1 << c), buffer, (1193180/100) );
376 if ( num_channels > 0 ) {
380 if ( joystick.slow_read & (JOY_POLLED_READINGS|JOY_BIOS_READINGS) ) {
386 t = t1 + joystick.max_timer - t2;
387 //mprintf( 0, "%d, %d, %d, %d\n", t1, t2, joystick.max_timer, t );
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; }
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) );
407 num_channels = joy_read_stick_asm2( mask, buffer, (1193180/100) );
408 //mprintf(( 0, "(%d)\n", num_channels ));
410 for (i=0; i<num_channels; i++ ) {
414 if ( joystick.slow_read & (JOY_POLLED_READINGS|JOY_BIOS_READINGS) ) {
420 t = t1 + joystick.max_timer - t2;
421 //mprintf(( 0, "%d, %d, %d, %d\n", t1, t2, joystick.max_timer, t ));
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; }
446 // if(args_find("-joy209"))
447 // use_alt_joyport=1;
448 if(args_find("-joy209"))
449 JOY_PORT = 521; //209h;
454 for (i=0; i<MAX_BUTTONS; i++ )
455 joystick.buttons[i].last_state = 0;
458 if ( !joy_installed ) {
461 //joystick.max_timer = 65536;
462 joystick.slow_read = 0;
463 joystick.read_count = 0;
464 joystick.last_value = 0;
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" );
474 if (!dpmi_lock_region ((void near *)joy_handler, (char *)joy_handler_end - (char near *)joy_handler)) {
475 printf( "Error locking joystick handler!\n" );
479 if (!dpmi_lock_region (&joystick, sizeof(Joy_info))) {
480 printf( "Error locking joystick handler's data!\n" );
484 timer_set_joyhandler(joy_handler);
487 // Do initial cheapy calibration...
488 joystick.present_mask = JOY_ALL_AXIS; // Assume they're all present
490 joystick.present_mask = joystick_read_raw_axis( JOY_ALL_AXIS, temp_axis );
491 } while( joy_bogus_reading );
493 if ( joystick.present_mask & 3 )
503 if (!joy_installed) return;
509 joystick.present_mask = JOY_ALL_AXIS; // Assume they're all present
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 )
521 joystick.present_mask = JOY_ALL_AXIS; // Assume they're all present
523 joystick.present_mask = joystick_read_raw_axis( JOY_ALL_AXIS, joystick.axis_max );
524 } while( joy_bogus_reading );
526 if ( joystick.present_mask & 3 )
534 joystick.present_mask = JOY_ALL_AXIS; // Assume they're all present
536 joystick.present_mask = joystick_read_raw_axis( JOY_ALL_AXIS, joystick.axis_center );
537 } while( joy_bogus_reading );
539 if ( joystick.present_mask & 3 )
545 void joy_set_cen_fake(int channel)
549 int minx, maxx, cenx;
553 for (i=0; i<4; i++ ) {
554 if ( (joystick.present_mask & (1<<i)) && (i!=channel) ) {
556 minx += joystick.axis_min[i];
557 maxx += joystick.axis_max[i];
558 cenx += joystick.axis_center[i];
565 joystick.axis_min[channel] = minx;
566 joystick.axis_max[channel] = maxx;
567 joystick.axis_center[channel] = cenx;
570 int joy_get_scaled_reading( int raw, int axn )
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 )
578 if ( joystick.axis_max[axn] - joystick.axis_center[axn] < 2 )
580 //end change - Victor Rachels (by Eivind Brendryen)
582 raw -= joystick.axis_center[axn];
585 d = joystick.axis_center[axn]-joystick.axis_min[axn];
587 d = joystick.axis_max[axn]-joystick.axis_center[axn];
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))
605 //end this section addition -VR
610 int last_reading[4] = { 0, 0, 0, 0 };
612 void joy_get_pos( int *x, int *y )
617 if ((!joy_installed)||(!joy_present)) { *x=*y=0; return; }
619 flags=joystick_read_raw_axis( JOY_1_X_AXIS+JOY_1_Y_AXIS, axis );
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;
626 last_reading[0] = axis[0];
627 last_reading[1] = axis[1];
630 if ( flags & JOY_1_X_AXIS )
631 *x = joy_get_scaled_reading( axis[0], 0 );
635 if ( flags & JOY_1_Y_AXIS )
636 *y = joy_get_scaled_reading( axis[1], 1 );
641 ubyte joy_read_stick( ubyte masks, int *axis )
646 if ((!joy_installed)||(!joy_present)) {
647 axis[0] = 0; axis[1] = 0;
648 axis[2] = 0; axis[3] = 0;
652 flags=joystick_read_raw_axis( masks, raw_axis );
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];
661 last_reading[0] = axis[0];
662 last_reading[1] = axis[1];
663 last_reading[2] = axis[2];
664 last_reading[3] = axis[3];
667 if ( flags & JOY_1_X_AXIS )
668 axis[0] = joy_get_scaled_reading( raw_axis[0], 0 );
672 if ( flags & JOY_1_Y_AXIS )
673 axis[1] = joy_get_scaled_reading( raw_axis[1], 1 );
677 if ( flags & JOY_2_X_AXIS )
678 axis[2] = joy_get_scaled_reading( raw_axis[2], 2 );
682 if ( flags & JOY_2_Y_AXIS )
683 axis[3] = joy_get_scaled_reading( raw_axis[3], 3 );
693 if ((!joy_installed)||(!joy_present)) return 0;
695 return joy_read_raw_buttons();
698 void joy_get_btn_down_cnt( int *btn0, int *btn1 )
700 if ((!joy_installed)||(!joy_present)) { *btn0=*btn1=0; return; }
703 *btn0 = joystick.buttons[0].downcount;
704 joystick.buttons[0].downcount = 0;
705 *btn1 = joystick.buttons[1].downcount;
706 joystick.buttons[1].downcount = 0;
710 int joy_get_button_state( int btn )
714 if ((!joy_installed)||(!joy_present)) return 0;
716 if ( btn >= MAX_BUTTONS ) return 0;
719 count = joystick.buttons[btn].state;
725 int joy_get_button_up_cnt( int btn )
729 if ((!joy_installed)||(!joy_present)) return 0;
731 if ( btn >= MAX_BUTTONS ) return 0;
734 count = joystick.buttons[btn].upcount;
735 joystick.buttons[btn].upcount = 0;
741 int joy_get_button_down_cnt( int btn )
745 if ((!joy_installed)||(!joy_present)) return 0;
746 if ( btn >= MAX_BUTTONS ) return 0;
749 count = joystick.buttons[btn].downcount;
750 joystick.buttons[btn].downcount = 0;
757 fix joy_get_button_down_time( int btn )
761 if ((!joy_installed)||(!joy_present)) return 0;
762 if ( btn >= MAX_BUTTONS ) return 0;
765 count = joystick.buttons[btn].timedown;
766 joystick.buttons[btn].timedown = 0;
769 return fixmuldiv(count, 65536, 1193180 );
772 void joy_get_btn_up_cnt( int *btn0, int *btn1 )
774 if ((!joy_installed)||(!joy_present)) { *btn0=*btn1=0; return; }
777 *btn0 = joystick.buttons[0].upcount;
778 joystick.buttons[0].upcount = 0;
779 *btn1 = joystick.buttons[1].upcount;
780 joystick.buttons[1].upcount = 0;
784 void joy_set_btn_values( int btn, int state, fix timedown, int downcount, int upcount )
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;
797 if ( joystick.slow_read & JOY_BIOS_READINGS )
798 joystick.last_value = joy_read_buttons_bios2();