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/*
$Id: joystick_linux.cpp,v 1.1 2001/03/06 15:09:22 mbn Exp $
------------------------------------------------------------------------
ClanLib, the platform independent game SDK.
This library is distributed under the GNU LIBRARY GENERAL PUBLIC LICENSE
version 2. See COPYING for details.
For a total list of contributers see CREDITS.
------------------------------------------------------------------------
*/
#include "Core/precomp.h"
#include <sys/ioctl.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdio.h>
#include "API/Core/System/cl_assert.h"
#include <API/Display/Input/inputaxis.h>
#include <API/Display/Input/inputbutton.h>
#include <Display/Input/X11/joystick_linux.h>
#ifdef USE_JOY
#include "joystick_linux.h"
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,0)
CL_LinuxJoystick::CL_LinuxJoystick()
{
fd = -1;
num_buttons = 0;
num_axes = 0;
axes = NULL;
buttons = NULL;
}
CL_LinuxJoystick::~CL_LinuxJoystick()
{
if (fd != -1)
{
close(fd);
}
delete[] axes;
delete[] buttons;
}
bool CL_LinuxJoystick::init(int number)
{
cl_assert(fd == -1); // do not call init twice!
char devname[10];
sprintf( devname, "/dev/js%d", number );
fd = open( devname, O_RDONLY | O_NONBLOCK );
if (fd == -1) return false; // no joystick available
ioctl( fd, JSIOCGBUTTONS, &num_buttons );
ioctl( fd, JSIOCGAXES, &num_axes );
/*
cout << "Number of axes: " << num_axes << endl;
cout << "Number of buttons: " << num_buttons << endl;
*/
axes = new CL_LinuxJoystick_Axis[num_axes];
buttons = new CL_LinuxJoystick_Button[num_buttons];
return true;
}
void CL_LinuxJoystick::keep_alive()
{
cl_assert(fd != -1); // init _MUST_ be called before update!
while (read( fd, &jev, sizeof(js_event) ) != -1)
{
switch (jev.type)
{
case JS_EVENT_AXIS:
axes[jev.number].set_value(jev.value);
break;
case JS_EVENT_BUTTON:
buttons[jev.number].set_value(jev.value);
break;
}
}
}
CL_InputAxis *CL_LinuxJoystick::get_axis(int num)
{
cl_assert(num >= 0); // disallow negative values
if (num >= num_axes) return NULL;
return &axes[num];
}
CL_InputButton *CL_LinuxJoystick::get_button(int num)
{
cl_assert(num >= 0); // disallow negative values
if (num >= num_buttons) return NULL;
return &buttons[num];
}
#endif
#endif
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