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poll twice
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28e00a0f6e
commit
61983b1b06
@ -16,6 +16,12 @@ pub fn run(mut global_state: GlobalState, event_loop: EventLoop) {
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debug!(?current_state, "Started game with state");
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debug!(?current_state, "Started game with state");
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});
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});
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// Used to ignore every other `MainEvenstCleared`
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// This is a workaround for a bug on macos in which mouse motion events are only
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// reported every other cycle of the event loop
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// See: https://github.com/rust-windowing/winit/issues/1418
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let mut polled_twice = false;
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event_loop.run(move |event, _, control_flow| {
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event_loop.run(move |event, _, control_flow| {
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// Continously run loop since we handle sleeping
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// Continously run loop since we handle sleeping
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*control_flow = winit::event_loop::ControlFlow::Poll;
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*control_flow = winit::event_loop::ControlFlow::Poll;
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@ -27,94 +33,10 @@ pub fn run(mut global_state: GlobalState, event_loop: EventLoop) {
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match event {
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match event {
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winit::event::Event::MainEventsCleared => {
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winit::event::Event::MainEventsCleared => {
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// Run tick here
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if polled_twice {
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handle_main_events_cleared(&mut states, control_flow, &mut global_state);
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// What's going on here?
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// ---------------------
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// The state system used by Voxygen allows for the easy development of
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// stack-based menus. For example, you may want a "title" state
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// that can push a "main menu" state on top of it, which can in
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// turn push a "settings" state or a "game session" state on top of it.
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// The code below manages the state transfer logic automatically so that we
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// don't have to re-engineer it for each menu we decide to add
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// to the game.
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let mut exit = true;
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while let Some(state_result) = states.last_mut().map(|last| {
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let events = global_state.window.fetch_events();
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last.tick(&mut global_state, events)
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}) {
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// Implement state transfer logic.
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match state_result {
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PlayStateResult::Continue => {
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// Wait for the next tick.
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global_state.clock.tick(Duration::from_millis(
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1000 / global_state.settings.graphics.max_fps as u64,
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));
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// Maintain global state.
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global_state
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.maintain(global_state.clock.get_last_delta().as_secs_f32());
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exit = false;
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break;
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},
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PlayStateResult::Shutdown => {
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debug!("Shutting down all states...");
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while states.last().is_some() {
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states.pop().map(|old_state| {
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debug!("Popped state '{}'.", old_state.name());
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global_state.on_play_state_changed();
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});
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}
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},
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PlayStateResult::Pop => {
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states.pop().map(|old_state| {
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debug!("Popped state '{}'.", old_state.name());
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global_state.on_play_state_changed();
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});
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states.last_mut().map(|new_state| {
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new_state.enter(&mut global_state, Direction::Backwards);
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});
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},
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PlayStateResult::Push(mut new_state) => {
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new_state.enter(&mut global_state, Direction::Forwards);
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debug!("Pushed state '{}'.", new_state.name());
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states.push(new_state);
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global_state.on_play_state_changed();
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},
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PlayStateResult::Switch(mut new_state) => {
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new_state.enter(&mut global_state, Direction::Forwards);
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states.last_mut().map(|old_state| {
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debug!(
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"Switching to state '{}' from state '{}'.",
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new_state.name(),
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old_state.name()
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);
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mem::swap(old_state, &mut new_state);
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global_state.on_play_state_changed();
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});
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},
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}
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}
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if exit {
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*control_flow = winit::event_loop::ControlFlow::Exit;
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}
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// TODO: move
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if let Some(last) = states.last_mut() {
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global_state.window.renderer_mut().clear();
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last.render(
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&mut global_state.window.renderer_mut(),
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&global_state.settings,
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);
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// Finish the frame.
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global_state.window.renderer_mut().flush();
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global_state
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.window
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.swap_buffers()
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.expect("Failed to swap window buffers!");
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}
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}
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polled_twice = !polled_twice;
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},
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},
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winit::event::Event::WindowEvent { event, .. } => global_state
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winit::event::Event::WindowEvent { event, .. } => global_state
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.window
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.window
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@ -131,3 +53,93 @@ pub fn run(mut global_state: GlobalState, event_loop: EventLoop) {
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}
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}
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});
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});
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}
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}
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fn handle_main_events_cleared(
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states: &mut Vec<Box<dyn PlayState>>,
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control_flow: &mut winit::event_loop::ControlFlow,
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global_state: &mut GlobalState,
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) {
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// Run tick here
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// What's going on here?
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// ---------------------
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// The state system used by Voxygen allows for the easy development of
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// stack-based menus. For example, you may want a "title" state
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// that can push a "main menu" state on top of it, which can in
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// turn push a "settings" state or a "game session" state on top of it.
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// The code below manages the state transfer logic automatically so that we
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// don't have to re-engineer it for each menu we decide to add
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// to the game.
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let mut exit = true;
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while let Some(state_result) = states.last_mut().map(|last| {
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let events = global_state.window.fetch_events();
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last.tick(global_state, events)
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}) {
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// Implement state transfer logic.
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match state_result {
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PlayStateResult::Continue => {
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// Wait for the next tick.
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global_state.clock.tick(Duration::from_millis(
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1000 / global_state.settings.graphics.max_fps as u64,
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));
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// Maintain global state.
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global_state.maintain(global_state.clock.get_last_delta().as_secs_f32());
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exit = false;
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break;
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},
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PlayStateResult::Shutdown => {
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debug!("Shutting down all states...");
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while states.last().is_some() {
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states.pop().map(|old_state| {
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debug!("Popped state '{}'.", old_state.name());
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global_state.on_play_state_changed();
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});
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}
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},
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PlayStateResult::Pop => {
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states.pop().map(|old_state| {
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debug!("Popped state '{}'.", old_state.name());
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global_state.on_play_state_changed();
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});
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states.last_mut().map(|new_state| {
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new_state.enter(global_state, Direction::Backwards);
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});
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},
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PlayStateResult::Push(mut new_state) => {
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new_state.enter(global_state, Direction::Forwards);
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debug!("Pushed state '{}'.", new_state.name());
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states.push(new_state);
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global_state.on_play_state_changed();
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},
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PlayStateResult::Switch(mut new_state) => {
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new_state.enter(global_state, Direction::Forwards);
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states.last_mut().map(|old_state| {
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debug!(
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"Switching to state '{}' from state '{}'.",
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new_state.name(),
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old_state.name()
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);
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mem::swap(old_state, &mut new_state);
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global_state.on_play_state_changed();
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});
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},
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}
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}
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if exit {
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*control_flow = winit::event_loop::ControlFlow::Exit;
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}
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if let Some(last) = states.last_mut() {
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global_state.window.renderer_mut().clear();
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last.render(global_state.window.renderer_mut(), &global_state.settings);
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// Finish the frame.
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global_state.window.renderer_mut().flush();
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global_state
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.window
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.swap_buffers()
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.expect("Failed to swap window buffers!");
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}
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}
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