quakeforge/libs/video/targets/joy_linux.c

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/*
joy_linux.c
Joystick driver for Linux
Copyright (C) 2000 David Jeffery
Copyright (C) 2000 Jeff Teunissen <deek@dusknet.dhs.org>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to:
Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <fcntl.h>
#include <unistd.h>
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#include <linux/joystick.h>
#include "QF/cvar.h"
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#include "QF/joystick.h"
#include "QF/keys.h"
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#include "QF/qtypes.h"
#include "QF/sys.h"
// Variables and structures for this driver
int joy_handle;
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void
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JOY_Read (void)
{
struct js_event event;
if (!joy_active || !joy_enable->int_val)
return;
while (read (joy_handle, &event, sizeof (struct js_event)) > -1) {
if (event.type & JS_EVENT_BUTTON) {
if (event.number >= JOY_MAX_BUTTONS)
continue;
joy_buttons[event.number].current = event.value;
if (joy_buttons[event.number].current >
joy_buttons[event.number].old) {
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Key_Event (QFJ_BUTTON1 + event.number, 0, true);
} else {
if (joy_buttons[event.number].current <
joy_buttons[event.number].old) {
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Key_Event (QFJ_BUTTON1 + event.number, 0, false);
}
}
joy_buttons[event.number].old = joy_buttons[event.number].current;
} else {
if (event.type & JS_EVENT_AXIS) {
if (event.number >= JOY_MAX_AXES)
continue;
joy_axes[event.number].current = event.value;
}
}
}
}
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int
JOY_Open (void)
{
// Open joystick device
joy_handle = open (joy_device->string, O_RDONLY | O_NONBLOCK);
if (joy_handle < 0) {
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return -1;
}
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return 0;
}
void
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JOY_Close (void)
{
int i;
i = close (joy_handle);
if (i) {
Sys_MaskPrintf (SYS_VID, "JOY: Failed to close joystick device!\n");
} else {
Sys_MaskPrintf (SYS_VID, "JOY_Shutdown\n");
}
}