extern crate sdl2;
fn main() -> Result<(), String> {
let sdl_context = sdl2::init()?;
let joystick_subsystem = sdl_context.joystick()?;
let haptic_subsystem = sdl_context.haptic()?;
let available = joystick_subsystem.num_joysticks()
.map_err(|e| format!("can't enumerate joysticks: {}", e))?;
println!("{} joysticks available", available);
let joystick_index = (0..available).find_map(|id| match joystick_subsystem.open(id) {
Ok(c) => {
println!("Success: opened \"{}\"", c.name());
Some(id)
},
Err(e) => {
println!("failed: {:?}", e);
None
},
}).expect("Couldn't open any joystick");
let mut haptic = haptic_subsystem.open_from_joystick_id(joystick_index)
.map_err(|e| e.to_string())?;
for event in sdl_context.event_pump()?.wait_iter() {
use sdl2::event::Event;
match event {
Event::JoyAxisMotion{ axis_idx, value: val, .. } => {
let dead_zone = 10_000;
if val > dead_zone || val < -dead_zone {
println!("Axis {} moved to {}", axis_idx, val);
}
}
Event::JoyButtonDown{ button_idx, .. } =>{
println!("Button {} down", button_idx);
haptic.rumble_play(0.5, 500);
},
Event::JoyButtonUp{ button_idx, .. } =>
println!("Button {} up", button_idx),
Event::JoyHatMotion{ hat_idx, state, .. } =>
println!("Hat {} moved to {:?}", hat_idx, state),
Event::Quit{..} => break,
_ => (),
}
}
Ok(())
}