77 lines
2.5 KiB
Rust
77 lines
2.5 KiB
Rust
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use winit::application::ApplicationHandler;
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use winit::event::WindowEvent;
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use winit::event_loop::ActiveEventLoop;
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use winit::window::{Window, WindowId};
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pub struct StateApplication<'a> {
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state: Option<crate::state::State<'a>>,
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update_fn: Option<Box<dyn FnMut(&mut crate::state::State<'a>) + 'a>>,
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input_fn: Option<Box<dyn FnMut(&mut crate::state::State<'a>, &WindowEvent) + 'a>>,
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}
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impl<'a> StateApplication<'a> {
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pub fn new() -> Self {
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Self { state: None, update_fn: None, input_fn: None }
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}
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pub fn on_update<F: FnMut(&mut crate::state::State<'a>) + 'a>(mut self, func: F) -> Self {
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self.update_fn = Some(Box::new(func));
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self
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}
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pub fn on_input<F: FnMut(&mut crate::state::State<'a>, &WindowEvent) + 'a>(mut self, func: F) -> Self {
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self.input_fn = Some(Box::new(func));
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self
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}
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}
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impl<'a> ApplicationHandler for StateApplication<'a> {
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fn resumed(&mut self, event_loop: &ActiveEventLoop) {
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let window = event_loop
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.create_window(Window::default_attributes().with_title("Solar Engine"))
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.unwrap();
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self.state = Some(crate::state::State::new(window));
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}
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fn window_event(
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&mut self,
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event_loop: &ActiveEventLoop,
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window_id: WindowId,
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event: WindowEvent,
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) {
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let window = self.state.as_ref().unwrap().window();
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if window.id() == window_id {
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match event {
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WindowEvent::CloseRequested => {
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event_loop.exit();
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}
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WindowEvent::Resized(physical_size) => {
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self.state.as_mut().unwrap().resize(physical_size);
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}
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WindowEvent::RedrawRequested => {
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if let (Some(state), Some(update_fn)) = (self.state.as_mut(), self.update_fn.as_mut()) {
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update_fn(state);
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}
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self.state.as_mut().unwrap().render().unwrap();
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}
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WindowEvent::KeyboardInput { .. } => {
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if let Some(state) = self.state.as_mut() {
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if let Some(input_fn) = self.input_fn.as_mut() {
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input_fn(state, &event);
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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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}
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fn about_to_wait(&mut self, _event_loop: &ActiveEventLoop) {
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if let Some(state) = self.state.as_ref() {
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state.window().request_redraw();
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}
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}
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}
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