381 lines
7.9 KiB
C
381 lines
7.9 KiB
C
#include <conf.h>
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#ifdef __ENV_LINUX__
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#include <stdlib.h>
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#include <stdio.h>
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#include "joystick.h"
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#include <sys/ioctl.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include "timer.h"
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#include "pstypes.h"
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#include "mono.h"
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#include "joy.h"
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char joy_installed = 0;
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char joy_present = 0;
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joystick_device j_joystick[4];
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joystick_axis j_axis[MAX_AXES];
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joystick_button j_button[MAX_BUTTONS];
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int j_num_axes = 0, j_num_buttons = 0;
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int timer_rate;
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int j_axes_in_sticks[4]; /* number of axes in the first [x] sticks */
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int j_buttons_in_sticks[4]; /* number of buttons in the first [x] sticks */
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int joy_deadzone = 0;
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int j_Get_joydev_axis_number (int all_axis_number) {
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int i, joy_axis_number = all_axis_number;
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for (i = 0; i < j_axis[all_axis_number].joydev; i++) {
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joy_axis_number -= j_joystick[i].num_axes;
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}
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return joy_axis_number;
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}
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int j_Get_joydev_button_number (int all_button_number) {
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int i, joy_button_number = all_button_number;
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for (i = 0; i < j_button[all_button_number].joydev; i++) {
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joy_button_number -= j_joystick[i].num_buttons;
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}
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return joy_button_number;
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}
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int j_Update_state () {
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int num_processed = 0, i;
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struct js_event current_event;
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struct JS_DATA_TYPE joy_data;
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for (i = 0; i < j_num_buttons; i++) {
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//changed 6/24/1999 to finally squish the timedown bug - Owen Evans
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if (j_button[i].state != j_button[i].last_state) {
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if (j_button[i].state) {
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j_button[i].downcount++;
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j_button[i].timedown = timer_get_fixed_seconds();
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}
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}
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//end changed - OE
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j_button[i].last_state = j_button[i].state;
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}
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for (i = 0; i < 4; i++) {
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if (j_joystick[i].buffer >= 0) {
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if (j_joystick[i].version) {
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while (read (j_joystick[i].buffer, ¤t_event, sizeof (struct js_event)) > 0) {
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num_processed++;
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switch (current_event.type & ~JS_EVENT_INIT) {
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case JS_EVENT_AXIS:
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j_axis[j_axes_in_sticks[i] + current_event.number].value = current_event.value;
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break;
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case JS_EVENT_BUTTON:
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j_button[j_buttons_in_sticks[i] + current_event.number].state = current_event.value;
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break;
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}
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}
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} else {
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read (j_joystick[i].buffer, &joy_data, JS_RETURN);
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j_axis[j_axes_in_sticks[i] + 0].value = joy_data.x;
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j_axis[j_axes_in_sticks[i] + 1].value = joy_data.y;
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j_button[j_buttons_in_sticks[i] + 0].state = (joy_data.buttons & 0x01);
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j_button[j_buttons_in_sticks[i] + 1].state = (joy_data.buttons & 0x02) >> 1;
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}
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}
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}
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return num_processed;
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}
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void joy_set_cal_vals(int *axis_min, int *axis_center, int *axis_max) {
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int i;
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for (i = 0; i < 4; i++) {
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j_axis[i].center_val = axis_center[i];
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j_axis[i].min_val = axis_min[i];
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j_axis[i].max_val = axis_max[i];
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}
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}
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void joy_get_cal_vals(int *axis_min, int *axis_center, int *axis_max) {
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int i;
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//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 :)
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for (i = 0; i < 4; i++) {
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//end edit -MM
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axis_center[i] = j_axis[i].center_val;
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axis_min[i] = j_axis[i].min_val;
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axis_max[i] = j_axis[i].max_val;
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}
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}
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void joy_set_min (int axis_number, int value) {
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j_axis[axis_number].min_val = value;
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}
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void joy_set_center (int axis_number, int value) {
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j_axis[axis_number].center_val = value;
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}
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void joy_set_max (int axis_number, int value) {
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j_axis[axis_number].max_val = value;
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}
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ubyte joy_get_present_mask () {
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return 1;
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}
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void joy_set_timer_rate (int max_value) {
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timer_rate = max_value;
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}
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int joy_get_timer_rate () {
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return timer_rate;
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}
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void joy_flush () {
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int i;
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if (!joy_installed) return;
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for (i = 0; i < j_num_buttons; i++) {
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j_button[i].timedown = 0;
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j_button[i].downcount = 0;
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}
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}
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ubyte joystick_read_raw_axis (ubyte mask, int *axes) {
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int i;
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j_Update_state();
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for (i = 0; i < j_num_axes; i++) {
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axes[i] = j_axis[i].value;
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}
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return 0;
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}
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/* 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. */
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int joy_init () {
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int i, j;
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if (joy_installed) return 0;
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joy_flush ();
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if (!joy_installed) {
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printf ("Initializing joystick... ");
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j_joystick[0].buffer = open ("/dev/js0", O_NONBLOCK);
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j_joystick[1].buffer = open ("/dev/js1", O_NONBLOCK);
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j_joystick[2].buffer = open ("/dev/js2", O_NONBLOCK);
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j_joystick[3].buffer = open ("/dev/js3", O_NONBLOCK);
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if (j_joystick[0].buffer >= 0 || j_joystick[1].buffer >= 0 || j_joystick[2].buffer >= 0 || j_joystick[3].buffer >= 0) {
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printf ("found: ");
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for (i = 0; i < 4; i++) {
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if (j_joystick[i].buffer >= 0) {
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ioctl (j_joystick[i].buffer, JSIOCGAXES, &j_joystick[i].num_axes);
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ioctl (j_joystick[i].buffer, JSIOCGBUTTONS, &j_joystick[i].num_buttons);
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ioctl (j_joystick[i].buffer, JSIOCGVERSION, &j_joystick[i].version);
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if (!j_joystick[i].version) {
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j_joystick[i].num_axes = 2;
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j_joystick[i].num_buttons = 2;
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printf ("js%d (v0.x) " , i);
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} else {
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printf ("js%d (v%d.%d.%d) ",
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i,
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(j_joystick[i].version & 0xff0000) >> 16,
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(j_joystick[i].version & 0xff00) >> 8,
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j_joystick[i].version & 0xff);
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}
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for (j = j_num_axes; j < (j_num_axes + j_joystick[i].num_axes); j++) {
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j_axis[j].joydev = i;
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if (j_joystick[i].version) {
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j_axis[j].center_val = 0;
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j_axis[j].max_val = 32767;
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j_axis[j].min_val = -32767;
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}
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}
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for (j = j_num_buttons; j < (j_num_buttons + j_joystick[i].num_buttons); j++) {
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j_button[j].joydev = i;
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}
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j_num_axes += j_joystick[i].num_axes;
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j_num_buttons += j_joystick[i].num_buttons;
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} else {
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j_joystick[i].num_buttons = 0;
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j_joystick[i].num_axes = 0;
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}
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for (j = 0; j < i; j++) {
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j_axes_in_sticks[i] += j_joystick[j].num_axes;
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j_buttons_in_sticks[i] += j_joystick[j].num_buttons;
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}
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}
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} else {
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printf ("no joysticks found\n");
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return 0;
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}
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printf ("\n");
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if (j_num_axes > MAX_AXES)
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j_num_axes = MAX_AXES;
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if (j_num_buttons > MAX_BUTTONS)
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j_num_buttons = MAX_BUTTONS;
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joy_present = 1;
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joy_installed = 1;
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return 1;
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}
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return 1;
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}
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void joy_close() {
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int i;
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if (!joy_installed) return;
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for (i = 0; i < 4; i++) {
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if (j_joystick[i].buffer>=0) {
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printf ("closing js%d\n", i);
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close (j_joystick[i].buffer);
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}
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j_joystick[i].buffer=-1;
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}
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joy_present=0;
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joy_installed=0;
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}
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void joy_set_cen() {
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}
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int joy_get_scaled_reading(int raw, int axis_num)
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{
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int d, x;
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raw -= j_axis[axis_num].center_val;
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if (raw < 0)
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d = j_axis[axis_num].center_val - j_axis[axis_num].min_val;
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else if (raw > 0)
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d = j_axis[axis_num].max_val - j_axis[axis_num].center_val;
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else
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d = 0;
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if (d)
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x = ((raw << 7) / d);
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else
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x = 0;
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if ( x < -128 )
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x = -128;
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if ( x > 127 )
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x = 127;
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//added on 4/13/99 by Victor Rachels to add deadzone control
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d = (joy_deadzone) * 6;
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if ((x > (-1*d)) && (x < d))
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x = 0;
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//end this section addition -VR
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return x;
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}
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void joy_get_pos(int *x, int *y) {
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int axis[MAX_AXES];
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if ((!joy_installed)||(!joy_present)) { *x=*y=0; return; }
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joystick_read_raw_axis (JOY_ALL_AXIS, axis);
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*x = joy_get_scaled_reading( axis[0], 0 );
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*y = joy_get_scaled_reading( axis[1], 1 );
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}
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int joy_get_btns () {
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return 0;
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}
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int joy_get_button_state (int btn) {
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if(btn >= j_num_buttons)
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return 0;
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j_Update_state ();
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return j_button[btn].state;
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}
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int joy_get_button_down_cnt (int btn) {
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int downcount;
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j_Update_state ();
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downcount = j_button[btn].downcount;
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j_button[btn].downcount = 0;
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return downcount;
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}
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//changed 6/24/99 to finally squish the timedown bug - Owen Evans
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fix joy_get_button_down_time(int btn) {
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fix downtime;
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j_Update_state ();
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if (j_button[btn].state) {
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downtime = timer_get_fixed_seconds() - j_button[btn].timedown;
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j_button[btn].timedown = timer_get_fixed_seconds();
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} else {
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downtime = 0;
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}
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return downtime;
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}
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//end changed - OE
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void joy_poll() {
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}
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void joy_set_slow_reading(int flag) {
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}
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#endif // __ENV_LINUX__
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