14 char joy_installed = 0;
17 joystick_device j_joystick[4];
18 joystick_axis j_axis[MAX_AXES];
19 joystick_button j_button[MAX_BUTTONS];
21 int j_num_axes = 0, j_num_buttons = 0;
24 int j_axes_in_sticks[4]; /* number of axes in the first [x] sticks */
25 int j_buttons_in_sticks[4]; /* number of buttons in the first [x] sticks */
29 int j_Get_joydev_axis_number (int all_axis_number) {
30 int i, joy_axis_number = all_axis_number;
32 for (i = 0; i < j_axis[all_axis_number].joydev; i++) {
33 joy_axis_number -= j_joystick[i].num_axes;
36 return joy_axis_number;
40 int j_Get_joydev_button_number (int all_button_number) {
41 int i, joy_button_number = all_button_number;
43 for (i = 0; i < j_button[all_button_number].joydev; i++) {
44 joy_button_number -= j_joystick[i].num_buttons;
47 return joy_button_number;
51 int j_Update_state () {
52 int num_processed = 0, i;
53 struct js_event current_event;
54 struct JS_DATA_TYPE joy_data;
56 for (i = 0; i < j_num_buttons; i++) {
57 //changed 6/24/1999 to finally squish the timedown bug - Owen Evans
58 if (j_button[i].state != j_button[i].last_state) {
59 if (j_button[i].state) {
60 j_button[i].downcount++;
61 j_button[i].timedown = timer_get_fixed_seconds();
65 j_button[i].last_state = j_button[i].state;
68 for (i = 0; i < 4; i++) {
69 if (j_joystick[i].buffer >= 0) {
70 if (j_joystick[i].version) {
71 while (read (j_joystick[i].buffer, ¤t_event, sizeof (struct js_event)) > 0) {
73 switch (current_event.type & ~JS_EVENT_INIT) {
75 j_axis[j_axes_in_sticks[i] + current_event.number].value = current_event.value;
78 j_button[j_buttons_in_sticks[i] + current_event.number].state = current_event.value;
83 read (j_joystick[i].buffer, &joy_data, JS_RETURN);
84 j_axis[j_axes_in_sticks[i] + 0].value = joy_data.x;
85 j_axis[j_axes_in_sticks[i] + 1].value = joy_data.y;
86 j_button[j_buttons_in_sticks[i] + 0].state = (joy_data.buttons & 0x01);
87 j_button[j_buttons_in_sticks[i] + 1].state = (joy_data.buttons & 0x02) >> 1;
96 void joy_set_cal_vals(int *axis_min, int *axis_center, int *axis_max) {
99 for (i = 0; i < 4; i++) {
100 j_axis[i].center_val = axis_center[i];
101 j_axis[i].min_val = axis_min[i];
102 j_axis[i].max_val = axis_max[i];
107 void joy_get_cal_vals(int *axis_min, int *axis_center, int *axis_max) {
110 //edited 05/18/99 Matt Mueller - we should return all axes instead of j_num_axes, since they are all given to us in joy_set_cal_vals ( and because checker complains :)
111 for (i = 0; i < 4; i++) {
113 axis_center[i] = j_axis[i].center_val;
114 axis_min[i] = j_axis[i].min_val;
115 axis_max[i] = j_axis[i].max_val;
120 void joy_set_min (int axis_number, int value) {
121 j_axis[axis_number].min_val = value;
125 void joy_set_center (int axis_number, int value) {
126 j_axis[axis_number].center_val = value;
130 void joy_set_max (int axis_number, int value) {
131 j_axis[axis_number].max_val = value;
135 ubyte joy_get_present_mask () {
140 void joy_set_timer_rate (int max_value) {
141 timer_rate = max_value;
145 int joy_get_timer_rate () {
153 if (!joy_installed) return;
155 for (i = 0; i < j_num_buttons; i++) {
156 j_button[i].timedown = 0;
157 j_button[i].downcount = 0;
163 ubyte joystick_read_raw_axis (ubyte mask, int *axes) {
168 for (i = 0; i < j_num_axes; i++) {
169 axes[i] = j_axis[i].value;
176 /* joy_init () is pretty huge, a bit klunky, and by no means pretty. But who cares? It does the job and it's only run once. */
182 if (joy_installed) return 0;
185 if (!joy_installed) {
187 printf ("Initializing joystick... ");
189 j_joystick[0].buffer = open ("/dev/js0", O_NONBLOCK);
190 j_joystick[1].buffer = open ("/dev/js1", O_NONBLOCK);
191 j_joystick[2].buffer = open ("/dev/js2", O_NONBLOCK);
192 j_joystick[3].buffer = open ("/dev/js3", O_NONBLOCK);
194 if (j_joystick[0].buffer >= 0 || j_joystick[1].buffer >= 0 || j_joystick[2].buffer >= 0 || j_joystick[3].buffer >= 0) {
197 for (i = 0; i < 4; i++) {
198 if (j_joystick[i].buffer >= 0) {
199 ioctl (j_joystick[i].buffer, JSIOCGAXES, &j_joystick[i].num_axes);
200 ioctl (j_joystick[i].buffer, JSIOCGBUTTONS, &j_joystick[i].num_buttons);
201 ioctl (j_joystick[i].buffer, JSIOCGVERSION, &j_joystick[i].version);
202 if (!j_joystick[i].version) {
203 j_joystick[i].num_axes = 2;
204 j_joystick[i].num_buttons = 2;
205 printf ("js%d (v0.x) " , i);
207 printf ("js%d (v%d.%d.%d) ",
209 (j_joystick[i].version & 0xff0000) >> 16,
210 (j_joystick[i].version & 0xff00) >> 8,
211 j_joystick[i].version & 0xff);
214 for (j = j_num_axes; j < (j_num_axes + j_joystick[i].num_axes); j++) {
215 j_axis[j].joydev = i;
216 if (j_joystick[i].version) {
217 j_axis[j].center_val = 0;
218 j_axis[j].max_val = 32767;
219 j_axis[j].min_val = -32767;
222 for (j = j_num_buttons; j < (j_num_buttons + j_joystick[i].num_buttons); j++) {
223 j_button[j].joydev = i;
226 j_num_axes += j_joystick[i].num_axes;
227 j_num_buttons += j_joystick[i].num_buttons;
230 j_joystick[i].num_buttons = 0;
231 j_joystick[i].num_axes = 0;
234 for (j = 0; j < i; j++) {
235 j_axes_in_sticks[i] += j_joystick[j].num_axes;
236 j_buttons_in_sticks[i] += j_joystick[j].num_buttons;
240 printf ("no joysticks found\n");
246 if (j_num_axes > MAX_AXES)
247 j_num_axes = MAX_AXES;
248 if (j_num_buttons > MAX_BUTTONS)
249 j_num_buttons = MAX_BUTTONS;
263 if (!joy_installed) return;
265 for (i = 0; i < 4; i++) {
266 if (j_joystick[i].buffer>=0) {
267 printf ("closing js%d\n", i);
268 close (j_joystick[i].buffer);
270 j_joystick[i].buffer=-1;
282 int joy_get_scaled_reading(int raw, int axis_num)
286 raw -= j_axis[axis_num].center_val;
289 d = j_axis[axis_num].center_val - j_axis[axis_num].min_val;
291 d = j_axis[axis_num].max_val - j_axis[axis_num].center_val;
296 x = ((raw << 7) / d);
305 //added on 4/13/99 by Victor Rachels to add deadzone control
306 d = (joy_deadzone) * 6;
307 if ((x > (-1*d)) && (x < d))
309 //end this section addition -VR
315 void joy_get_pos(int *x, int *y) {
318 if ((!joy_installed)||(!joy_present)) { *x=*y=0; return; }
320 joystick_read_raw_axis (JOY_ALL_AXIS, axis);
322 *x = joy_get_scaled_reading( axis[0], 0 );
323 *y = joy_get_scaled_reading( axis[1], 1 );
327 int joy_get_btns () {
332 int joy_get_button_state (int btn) {
333 if(btn >= j_num_buttons)
337 return j_button[btn].state;
341 int joy_get_button_down_cnt (int btn) {
346 downcount = j_button[btn].downcount;
347 j_button[btn].downcount = 0;
353 //changed 6/24/99 to finally squish the timedown bug - Owen Evans
354 fix joy_get_button_down_time(int btn) {
358 if (j_button[btn].state) {
359 downtime = timer_get_fixed_seconds() - j_button[btn].timedown;
360 j_button[btn].timedown = timer_get_fixed_seconds();
374 void joy_set_slow_reading(int flag) {