A minimal C++ object-oriented API onto joystick devices under Linux.
Create an instance of Joystick:
Joystick joystick;Ensure that it was found and that we can use it:
if (!joystick.isFound())
{
printf("open failed.\n");
// hmm
}Sample events from the Joystick:
JoystickEvent event;
if (joystick.sample(&event))
{
// use 'event'
}You might run this in a loop:
while (true)
{
// Restrict rate
usleep(1000);
// Attempt to sample an event from the joystick
JoystickEvent event;
if (joystick.sample(&event))
{
if (event.isButton())
{
printf("Button %u is %s\n", event.number, event.value == 0 ? "up" : "down");
}
else if (event.isAxis())
{
printf("Axis %u is at position %d\n", event.number, event.value);
}
}
}This produces something similar to:
Button 1 is up
Button 2 is down
Axis 0 is at position 122
Axis 1 is at position -11
Axis 2 is at position 9796
Axis 3 is at position -13850
You can specify the particular joystick by id:
Joystick js0(0);
Joystick js1(1);Or provide a specific device name:
Joystick js0("/dev/input/js0");Released under Apache License 2.0.
Copyright Drew Noakes 2013-2017.
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