mirror of https://github.com/aufflick/kegs.git
228 lines
4.9 KiB
C
228 lines
4.9 KiB
C
/************************************************************************/
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/* KEGS: Apple //gs Emulator */
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/* Copyright 2002 by Kent Dickey */
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/* */
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/* This code is covered by the GNU GPL */
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/* */
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/* The KEGS web page is kegs.sourceforge.net */
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/* You may contact the author at: kadickey@alumni.princeton.edu */
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/************************************************************************/
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const char rcsid_joystick_driver_c[] = "@(#)$KmKId: joystick_driver.c,v 1.7 2002-11-19 03:09:59-05 kadickey Exp $";
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#include "defc.h"
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#include <sys/time.h>
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#ifdef __linux__
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# include <linux/joystick.h>
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#endif
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#ifdef _WIN32
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# include <windows.h>
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# include <mmsystem.h>
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#endif
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extern int g_joystick_type; /* in paddles.c */
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extern int g_paddle_button[];
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extern int g_paddle_val[];
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const char *g_joystick_dev = "/dev/js0"; /* default joystick dev file */
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#define MAX_JOY_NAME 128
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int g_joystick_fd = -1;
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int g_joystick_num_axes = 0;
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int g_joystick_num_buttons = 0;
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#ifdef __linux__
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void
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joystick_init()
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{
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char joy_name[MAX_JOY_NAME];
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int version;
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int fd;
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int i;
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fd = open(g_joystick_dev, O_RDONLY | O_NONBLOCK);
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if(fd < 0) {
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printf("Unable to open joystick dev file: %s, errno: %d\n",
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g_joystick_dev, errno);
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printf("Defaulting to mouse joystick\n");
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return;
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}
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strcpy(&joy_name[0], "Unknown Joystick");
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version = 0x800;
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ioctl(fd, JSIOCGNAME(MAX_JOY_NAME), &joy_name[0]);
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ioctl(fd, JSIOCGAXES, &g_joystick_num_axes);
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ioctl(fd, JSIOCGBUTTONS, &g_joystick_num_buttons);
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ioctl(fd, JSIOCGVERSION, &version);
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printf("Detected joystick: %s [%d axes, %d buttons vers: %08x]\n",
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joy_name, g_joystick_num_axes, g_joystick_num_buttons,
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version);
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g_joystick_type = JOYSTICK_LINUX;
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g_joystick_fd = fd;
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for(i = 0; i < 4; i++) {
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g_paddle_val[i] = 280;
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g_paddle_button[i] = 1;
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}
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joystick_update();
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}
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/* joystick_update_linux() called from paddles.c. Update g_paddle_val[] */
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/* and g_paddle_button[] arrays with current information */
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void
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joystick_update()
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{
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struct js_event js; /* the linux joystick event record */
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int val;
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int num;
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int type;
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int ret;
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int len;
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int i;
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/* suck up to 20 events, then give up */
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len = sizeof(struct js_event);
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for(i = 0; i < 20; i++) {
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ret = read(g_joystick_fd, &js, len);
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if(ret != len) {
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/* just get out */
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return;
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}
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type = js.type & ~JS_EVENT_INIT;
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val = js.value;
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num = js.number & 3; /* clamp to 0-3 */
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switch(type) {
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case JS_EVENT_BUTTON:
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g_paddle_button[num] = val;
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break;
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case JS_EVENT_AXIS:
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/* val is -32767 to +32767, convert to 0->280 */
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/* want just 255, but go a little over for robustness*/
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g_paddle_val[num] = ((val + 32767) * 9) >> 11;
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break;
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}
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}
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}
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void
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joystick_update_button()
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{
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}
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#else /* !__linux__ */
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# ifdef _WIN32
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void
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joystick_init()
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{
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JOYINFO info;
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JOYCAPS joycap;
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MMRESULT ret1, ret2;
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int i;
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// Check that there is a joystick device
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if(joyGetNumDevs() <= 0) {
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printf("--No joystick hardware detected\n");
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return;
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}
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// Check that at least joystick 1 or joystick 2 is available
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ret1 = joyGetPos(JOYSTICKID1, &info);
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ret2 = joyGetDevCaps(JOYSTICKID1, &joycap, sizeof(joycap));
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if(ret1 == JOYERR_NOERROR && ret2 == JOYERR_NOERROR) {
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g_joystick_type = JOYSTICK_WIN32_1;
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printf("--Joystick #1 = %s\n", joycap.szPname);
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} else {
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ret1 = joyGetPos(JOYSTICKID2, &info);
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ret2 = joyGetDevCaps(JOYSTICKID2, &joycap, sizeof(joycap));
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if(ret1 == JOYERR_NOERROR && ret2 == JOYERR_NOERROR) {
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g_joystick_type = JOYSTICK_WIN32_2;
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printf("--Joystick #2 = %s\n", joycap.szPname);
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} else {
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printf("No joysticks found...\n");
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g_joystick_type = JOYSTICK_MOUSE;
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return;
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}
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}
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for(i = 0; i < 4; i++) {
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g_paddle_val[i] = 280;
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g_paddle_button[i] = 1;
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}
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joystick_update();
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}
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void
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joystick_update()
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{
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JOYCAPS joycap;
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JOYINFO info;
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UINT id;
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MMRESULT ret1, ret2;
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id = JOYSTICKID1;
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if(g_joystick_type == JOYSTICK_WIN32_2) {
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id = JOYSTICKID2;
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}
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ret1 = joyGetDevCaps(id, &joycap, sizeof(joycap));
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ret2 = joyGetPos(id, &info);
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if(ret1 == JOYERR_NOERROR && ret2 == JOYERR_NOERROR) {
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g_paddle_val[0] = (info.wXpos - joycap.wXmin) * 280 /
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(joycap.wXmax - joycap.wXmin);
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g_paddle_val[1] = (info.wYpos - joycap.wYmin) * 280 /
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(joycap.wYmax - joycap.wYmin);
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g_paddle_button[0] = ((info.wButtons & JOY_BUTTON1) ? 1 : 0);
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g_paddle_button[1] = ((info.wButtons & JOY_BUTTON2) ? 1 : 0);
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}
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}
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void
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joystick_update_button()
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{
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JOYINFOEX info;
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UINT id;
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id = JOYSTICKID1;
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if(g_joystick_type == JOYSTICK_WIN32_2) {
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id = JOYSTICKID2;
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}
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info.dwSize = sizeof(JOYINFOEX);
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info.dwFlags = JOY_RETURNBUTTONS;
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if(joyGetPosEx(id, &info) == JOYERR_NOERROR) {
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g_paddle_button[0] = ((info.dwButtons & JOY_BUTTON1) ? 1 : 0);
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g_paddle_button[1] = ((info.dwButtons & JOY_BUTTON2) ? 1 : 0);
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}
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}
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# else
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/* stubs for the routines */
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void
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joystick_init()
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{
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printf("No joy with joystick\n");
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}
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void
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joystick_update()
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{
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}
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void
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joystick_update_button()
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{
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}
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# endif /* !WIN32 */
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#endif
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