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.
15 * $Source: /cvs/cvsroot/d2x/arch/dos/joyc.c,v $
18 * $Date: 2001-10-24 09:25:05 $
20 * Routines for joystick reading.
22 * $Log: not supported by cvs2svn $
23 * Revision 1.3 2001/01/29 14:03:56 bradleyb
24 * Fixed build, minor fixes
26 * Revision 1.2 2001/01/24 04:29:45 bradleyb
27 * changed args_find to FindArg
29 * Revision 1.1.1.2 2001/01/19 03:33:52 bradleyb
30 * Import of d2x-0.0.9-pre1
32 * Revision 1.1.1.1 1999/06/14 21:58:26 donut
33 * Import of d1x 1.37 source.
35 * Revision 1.37 1995/10/07 13:22:31 john
36 * Added new method of reading joystick that allows higher-priority
37 * interrupts to go off.
39 * Revision 1.36 1995/03/30 11:03:40 john
40 * Made -JoyBios read buttons using BIOS.
42 * Revision 1.35 1995/02/14 11:39:25 john
43 * Added polled/bios joystick readers..
45 * Revision 1.34 1995/02/10 17:06:12 john
46 * Fixed bug with plugging in a joystick not getting detected.
48 * Revision 1.33 1995/01/27 16:39:42 john
49 * Made so that if no joystick detected, it wont't
52 * Revision 1.32 1995/01/12 13:16:40 john
53 * Made it so that joystick can't lose an axis
54 * by 1 weird reading. Reading has to occurr during
55 * calibration for this to happen.
57 * Revision 1.31 1994/12/28 15:56:03 john
58 * Fixed bug that refused to read joysticks whose
59 * min,cen,max were less than 100 apart.
61 * Revision 1.30 1994/12/28 15:31:53 john
62 * Added code to read joystick axis not all at one time.
64 * Revision 1.29 1994/12/27 15:44:36 john
65 * Made the joystick timeout be at 1/100th of a second,
66 * regardless of CPU speed.
68 * Revision 1.28 1994/12/04 11:54:54 john
69 * Made stick read at whatever rate the clock is at, not
70 * at 18.2 times/second.
72 * Revision 1.27 1994/11/29 02:25:40 john
73 * Made it so that the scaled reading returns 0
74 * if the calibration factors look funny..
76 * Revision 1.26 1994/11/22 11:08:07 john
77 * Commented out the ARCADE joystick.
79 * Revision 1.25 1994/11/14 19:40:26 john
80 * Fixed bug with no joystick being detected.
82 * Revision 1.24 1994/11/14 19:36:40 john
83 * Took out initial cheapy calibration.
85 * Revision 1.23 1994/11/14 19:13:27 john
86 * Took out the calibration in joy_init
88 * Revision 1.22 1994/10/17 10:09:57 john
89 * Made the state look at last_State, so that a joy_flush
90 * doesn't cause a new down state to be added next reading.
92 * Revision 1.21 1994/10/13 11:36:23 john
93 * Made joy_down_time be kept track of in fixed seconds,
96 * Revision 1.20 1994/10/12 16:58:50 john
97 * Fixed bug w/ previous comment.
99 * Revision 1.19 1994/10/12 16:57:44 john
100 * Added function to set a joystick button's state.
102 * Revision 1.18 1994/10/11 10:20:13 john
103 * Fixed Flightstick Pro/
106 * Revision 1.17 1994/09/29 18:29:20 john
107 * *** empty log message ***
109 * Revision 1.16 1994/09/27 19:17:23 john
110 * Added code so that is joy_init is never called, joystick is not
113 * Revision 1.15 1994/09/22 16:09:23 john
114 * Fixed some virtual memory lockdown problems with timer and
117 * Revision 1.14 1994/09/16 11:44:42 john
118 * Fixed bug with slow joystick.
120 * Revision 1.13 1994/09/16 11:36:15 john
121 * Fixed bug with reading non-present channels.
123 * Revision 1.12 1994/09/15 20:52:48 john
125 * Added support for the Arcade style joystick.
127 * Revision 1.11 1994/09/13 20:04:49 john
128 * Fixed bug with joystick button down_time.
130 * Revision 1.10 1994/09/10 13:48:07 john
131 * Made all 20 buttons read.
133 * Revision 1.9 1994/08/31 09:55:02 john
134 * *** empty log message ***
136 * Revision 1.8 1994/08/29 21:02:14 john
137 * Added joy_set_cal_values...
139 * Revision 1.7 1994/08/29 20:52:17 john
140 * Added better cyberman support; also, joystick calibration
141 * value return funcctiionn,
143 * Revision 1.6 1994/08/24 18:53:12 john
144 * Made Cyberman read like normal mouse; added dpmi module; moved
145 * mouse from assembly to c. Made mouse buttons return time_down.
147 * Revision 1.5 1994/07/14 22:12:23 john
148 * Used intrinsic forms of outp to fix vmm error.
150 * Revision 1.4 1994/07/07 19:52:59 matt
151 * Made joy_init() return success/fail flag
152 * Made joy_init() properly detect a stick if one is plugged in after joy_init()
153 * was called the first time.
155 * Revision 1.3 1994/07/01 10:55:55 john
156 * Fixed some bugs... added support for 4 axis.
158 * Revision 1.2 1994/06/30 20:36:55 john
159 * Revamped joystick code.
161 * Revision 1.1 1994/06/30 15:42:15 john
185 extern int joy_bogus_reading;
186 int JOY_PORT = 513; //201h;
187 int joy_deadzone = 0;
189 int joy_read_stick_asm2( int read_masks, int * event_buffer, int timeout );
190 int joy_read_stick_friendly2( int read_masks, int * event_buffer, int timeout );
191 int joy_read_stick_polled2( int read_masks, int * event_buffer, int timeout );
192 int joy_read_stick_bios2( int read_masks, int * event_buffer, int timeout );
193 int joy_read_buttons_bios2();
194 void joy_read_buttons_bios_end2();
199 // edi = pointer to buffer
200 // returns number of events
202 char joy_installed = 0;
203 char joy_present = 0;
205 typedef struct Button_info {
214 typedef struct Joy_info {
220 Button_info buttons[MAX_BUTTONS];
228 ubyte joy_read_buttons()
230 return ((~(inp(JOY_PORT) >> 4))&0xf);
233 void joy_get_cal_vals(int *axis_min, int *axis_center, int *axis_max)
237 for (i=0; i<4; i++) {
238 axis_min[i] = joystick.axis_min[i];
239 axis_center[i] = joystick.axis_center[i];
240 axis_max[i] = joystick.axis_max[i];
244 void joy_set_cal_vals(int *axis_min, int *axis_center, int *axis_max)
248 for (i=0; i<4; i++) {
249 joystick.axis_min[i] = axis_min[i];
250 joystick.axis_center[i] = axis_center[i];
251 joystick.axis_max[i] = axis_max[i];
256 ubyte joy_get_present_mask() {
257 return joystick.present_mask;
260 void joy_set_timer_rate(int max_value ) {
262 joystick.max_timer = max_value;
266 int joy_get_timer_rate() {
267 return joystick.max_timer;
274 if (!joy_installed) return;
277 for (i=0; i<MAX_BUTTONS; i++ ) {
278 joystick.buttons[i].ignore = 0;
279 joystick.buttons[i].state = 0;
280 joystick.buttons[i].timedown = 0;
281 joystick.buttons[i].downcount = 0;
282 joystick.buttons[i].upcount = 0;
289 void joy_handler(int ticks_this_time) {
292 Button_info * button;
294 // joystick.max_timer = ticks_this_time;
296 if ( joystick.slow_read & JOY_BIOS_READINGS ) {
297 joystick.read_count++;
298 if ( joystick.read_count > 7 ) {
299 joystick.read_count = 0;
300 value = joy_read_buttons_bios2();
301 joystick.last_value = value;
303 value = joystick.last_value;
306 value = joy_read_buttons(); //JOY_READ_BUTTONS;
309 for (i=0; i<MAX_BUTTONS; i++ ) {
310 button = &joystick.buttons[i];
311 if (!button->ignore) {
313 state = (value >> i) & 1;
314 else if (i==(value+4))
319 if ( button->last_state == state ) {
320 if (state) button->timedown += ticks_this_time;
323 button->downcount += state;
326 button->upcount += button->state;
329 button->last_state = state;
335 void joy_handler_end() { // Dummy function to help calculate size of joystick handler function
339 ubyte joy_read_raw_buttons() {
340 if ( joystick.slow_read & JOY_BIOS_READINGS )
341 return joy_read_buttons_bios2();
343 return joy_read_buttons(); //JOY_READ_BUTTONS;
346 void joy_set_slow_reading(int flag)
348 joystick.slow_read |= flag;
352 ubyte joystick_read_raw_axis( ubyte mask, int * axis )
354 ubyte read_masks, org_masks;
355 int t, t1, t2, buffer[4*2+2];
356 int e, i, num_channels, c;
358 axis[0] = 0; axis[1] = 0;
359 axis[2] = 0; axis[3] = 0;
361 if (!joy_installed) return 0;
366 mask &= joystick.present_mask; // Don't read non-present channels
368 return 0; // Don't read if no stick connected.
371 if ( joystick.slow_read & JOY_SLOW_READINGS ) {
372 for (c=0; c<4; c++ ) {
373 if ( mask & (1 << c)) {
374 // Time out at (1/100th of a second)
376 if ( joystick.slow_read & JOY_POLLED_READINGS )
377 num_channels = joy_read_stick_polled2( (1 << c), buffer, 65536 );
378 else if ( joystick.slow_read & JOY_BIOS_READINGS )
379 num_channels = joy_read_stick_bios2( (1 << c), buffer, 65536 );
380 else if ( joystick.slow_read & JOY_FRIENDLY_READINGS )
381 num_channels = joy_read_stick_friendly2( (1 << c), buffer, (1193180/100) );
383 num_channels = joy_read_stick_asm2( (1 << c), buffer, (1193180/100) );
385 if ( num_channels > 0 ) {
389 if ( joystick.slow_read & (JOY_POLLED_READINGS|JOY_BIOS_READINGS) ) {
395 t = t1 + joystick.max_timer - t2;
396 //mprintf( 0, "%d, %d, %d, %d\n", t1, t2, joystick.max_timer, t );
400 if ( e & 1 ) { axis[0] = t; read_masks |= 1; }
401 if ( e & 2 ) { axis[1] = t; read_masks |= 2; }
402 if ( e & 4 ) { axis[2] = t; read_masks |= 4; }
403 if ( e & 8 ) { axis[3] = t; read_masks |= 8; }
408 // Time out at (1/100th of a second)
409 if ( joystick.slow_read & JOY_POLLED_READINGS )
410 num_channels = joy_read_stick_polled2( mask, buffer, 65536 );
411 else if ( joystick.slow_read & JOY_BIOS_READINGS )
412 num_channels = joy_read_stick_bios2( mask, buffer, 65536 );
413 else if ( joystick.slow_read & JOY_FRIENDLY_READINGS )
414 num_channels = joy_read_stick_friendly2( mask, buffer, (1193180/100) );
416 num_channels = joy_read_stick_asm2( mask, buffer, (1193180/100) );
417 //mprintf(( 0, "(%d)\n", num_channels ));
419 for (i=0; i<num_channels; i++ ) {
423 if ( joystick.slow_read & (JOY_POLLED_READINGS|JOY_BIOS_READINGS) ) {
429 t = t1 + joystick.max_timer - t2;
430 //mprintf(( 0, "%d, %d, %d, %d\n", t1, t2, joystick.max_timer, t ));
435 if ( e & 1 ) { axis[0] = t; read_masks |= 1; }
436 if ( e & 2 ) { axis[1] = t; read_masks |= 2; }
437 if ( e & 4 ) { axis[2] = t; read_masks |= 4; }
438 if ( e & 8 ) { axis[3] = t; read_masks |= 8; }
455 // if(FindArg("-joy209"))
456 // use_alt_joyport=1;
457 if(FindArg("-joy209"))
458 JOY_PORT = 521; //209h;
463 for (i=0; i<MAX_BUTTONS; i++ )
464 joystick.buttons[i].last_state = 0;
467 if ( !joy_installed ) {
470 //joystick.max_timer = 65536;
471 joystick.slow_read = 0;
472 joystick.read_count = 0;
473 joystick.last_value = 0;
475 //--------------- lock everything for the virtal memory ----------------------------------
476 if (!dpmi_lock_region ((void near *)joy_read_buttons_bios2, (char *)joy_read_buttons_bios_end2 - (char near *)joy_read_buttons_bios2)) {
477 printf( "Error locking joystick handler (read bios)!\n" );
483 if (!dpmi_lock_region ((void near *)joy_handler, (char *)joy_handler_end - (char near *)joy_handler)) {
484 printf( "Error locking joystick handler!\n" );
488 if (!dpmi_lock_region (&joystick, sizeof(Joy_info))) {
489 printf( "Error locking joystick handler's data!\n" );
493 timer_set_joyhandler(joy_handler);
496 // Do initial cheapy calibration...
497 joystick.present_mask = JOY_ALL_AXIS; // Assume they're all present
499 joystick.present_mask = joystick_read_raw_axis( JOY_ALL_AXIS, temp_axis );
500 } while( joy_bogus_reading );
502 if ( joystick.present_mask & 3 )
512 if (!joy_installed) return;
518 joystick.present_mask = JOY_ALL_AXIS; // Assume they're all present
520 joystick.present_mask = joystick_read_raw_axis( JOY_ALL_AXIS, joystick.axis_min );
521 } while( joy_bogus_reading );
522 if ( joystick.present_mask & 3 )
530 joystick.present_mask = JOY_ALL_AXIS; // Assume they're all present
532 joystick.present_mask = joystick_read_raw_axis( JOY_ALL_AXIS, joystick.axis_max );
533 } while( joy_bogus_reading );
535 if ( joystick.present_mask & 3 )
543 joystick.present_mask = JOY_ALL_AXIS; // Assume they're all present
545 joystick.present_mask = joystick_read_raw_axis( JOY_ALL_AXIS, joystick.axis_center );
546 } while( joy_bogus_reading );
548 if ( joystick.present_mask & 3 )
554 void joy_set_cen_fake(int channel)
558 int minx, maxx, cenx;
562 for (i=0; i<4; i++ ) {
563 if ( (joystick.present_mask & (1<<i)) && (i!=channel) ) {
565 minx += joystick.axis_min[i];
566 maxx += joystick.axis_max[i];
567 cenx += joystick.axis_center[i];
574 joystick.axis_min[channel] = minx;
575 joystick.axis_max[channel] = maxx;
576 joystick.axis_center[channel] = cenx;
579 int joy_get_scaled_reading( int raw, int axn )
583 // Make sure it's calibrated properly.
584 //added/changed on 8/14/98 to allow smaller calibrating sticks to work (by Eivind Brendryen)--was <5
585 if ( joystick.axis_center[axn] - joystick.axis_min[axn] < 2 )
587 if ( joystick.axis_max[axn] - joystick.axis_center[axn] < 2 )
589 //end change - Victor Rachels (by Eivind Brendryen)
591 raw -= joystick.axis_center[axn];
594 d = joystick.axis_center[axn]-joystick.axis_min[axn];
596 d = joystick.axis_max[axn]-joystick.axis_center[axn];
610 //added on 4/13/99 by Victor Rachels to add deadzone control
611 dz = (joy_deadzone) * 6;
612 if ((x > (-1*dz)) && (x < dz))
614 //end this section addition -VR
619 int last_reading[4] = { 0, 0, 0, 0 };
621 void joy_get_pos( int *x, int *y )
626 if ((!joy_installed)||(!joy_present)) { *x=*y=0; return; }
628 flags=joystick_read_raw_axis( JOY_1_X_AXIS+JOY_1_Y_AXIS, axis );
630 if ( joy_bogus_reading ) {
631 axis[0] = last_reading[0];
632 axis[1] = last_reading[1];
633 flags = JOY_1_X_AXIS+JOY_1_Y_AXIS;
635 last_reading[0] = axis[0];
636 last_reading[1] = axis[1];
639 if ( flags & JOY_1_X_AXIS )
640 *x = joy_get_scaled_reading( axis[0], 0 );
644 if ( flags & JOY_1_Y_AXIS )
645 *y = joy_get_scaled_reading( axis[1], 1 );
650 ubyte joy_read_stick( ubyte masks, int *axis )
655 if ((!joy_installed)||(!joy_present)) {
656 axis[0] = 0; axis[1] = 0;
657 axis[2] = 0; axis[3] = 0;
661 flags=joystick_read_raw_axis( masks, raw_axis );
663 if ( joy_bogus_reading ) {
664 axis[0] = last_reading[0];
665 axis[1] = last_reading[1];
666 axis[2] = last_reading[2];
667 axis[3] = last_reading[3];
670 last_reading[0] = axis[0];
671 last_reading[1] = axis[1];
672 last_reading[2] = axis[2];
673 last_reading[3] = axis[3];
676 if ( flags & JOY_1_X_AXIS )
677 axis[0] = joy_get_scaled_reading( raw_axis[0], 0 );
681 if ( flags & JOY_1_Y_AXIS )
682 axis[1] = joy_get_scaled_reading( raw_axis[1], 1 );
686 if ( flags & JOY_2_X_AXIS )
687 axis[2] = joy_get_scaled_reading( raw_axis[2], 2 );
691 if ( flags & JOY_2_Y_AXIS )
692 axis[3] = joy_get_scaled_reading( raw_axis[3], 3 );
702 if ((!joy_installed)||(!joy_present)) return 0;
704 return joy_read_raw_buttons();
707 void joy_get_btn_down_cnt( int *btn0, int *btn1 )
709 if ((!joy_installed)||(!joy_present)) { *btn0=*btn1=0; return; }
712 *btn0 = joystick.buttons[0].downcount;
713 joystick.buttons[0].downcount = 0;
714 *btn1 = joystick.buttons[1].downcount;
715 joystick.buttons[1].downcount = 0;
719 int joy_get_button_state( int btn )
723 if ((!joy_installed)||(!joy_present)) return 0;
725 if ( btn >= MAX_BUTTONS ) return 0;
728 count = joystick.buttons[btn].state;
734 int joy_get_button_up_cnt( int btn )
738 if ((!joy_installed)||(!joy_present)) return 0;
740 if ( btn >= MAX_BUTTONS ) return 0;
743 count = joystick.buttons[btn].upcount;
744 joystick.buttons[btn].upcount = 0;
750 int joy_get_button_down_cnt( int btn )
754 if ((!joy_installed)||(!joy_present)) return 0;
755 if ( btn >= MAX_BUTTONS ) return 0;
758 count = joystick.buttons[btn].downcount;
759 joystick.buttons[btn].downcount = 0;
766 fix joy_get_button_down_time( int btn )
770 if ((!joy_installed)||(!joy_present)) return 0;
771 if ( btn >= MAX_BUTTONS ) return 0;
774 count = joystick.buttons[btn].timedown;
775 joystick.buttons[btn].timedown = 0;
778 return fixmuldiv(count, 65536, 1193180 );
781 void joy_get_btn_up_cnt( int *btn0, int *btn1 )
783 if ((!joy_installed)||(!joy_present)) { *btn0=*btn1=0; return; }
786 *btn0 = joystick.buttons[0].upcount;
787 joystick.buttons[0].upcount = 0;
788 *btn1 = joystick.buttons[1].upcount;
789 joystick.buttons[1].upcount = 0;
793 void joy_set_btn_values( int btn, int state, fix timedown, int downcount, int upcount )
796 joystick.buttons[btn].ignore = 1;
797 joystick.buttons[btn].state = state;
798 joystick.buttons[btn].timedown = fixmuldiv( timedown, 1193180, 65536 );
799 joystick.buttons[btn].downcount = downcount;
800 joystick.buttons[btn].upcount = upcount;
806 if ( joystick.slow_read & JOY_BIOS_READINGS )
807 joystick.last_value = joy_read_buttons_bios2();