aspen_engine/application/
mod.rs

1//#![allow(unused)]
2use winit::{
3    event::Event, 
4    event_loop::{
5        ControlFlow, 
6        EventLoop, 
7        EventLoopBuilder
8    }
9};
10
11use crate::{
12    renderer::Renderer, 
13    timing::TimingStruct, 
14    interface::Client
15};
16
17#[derive(Debug)]
18enum GlobalEvent {
19    Update,
20    Shutdown,
21}
22
23pub struct Application<UD: Client> {
24    event_loop: EventLoop<GlobalEvent>,
25    user_data: UD,
26    timer: TimingStruct,
27    renderer: Option<Renderer>,
28}
29
30impl<UD: Client> Application<UD> {
31    pub fn new(user_data: UD, use_graphics: bool) -> Self {
32        let event_loop = EventLoopBuilder::<GlobalEvent>::with_user_event()
33            .build()
34            .expect("event loop creation failed");
35
36        let renderer = match use_graphics {
37            true => Some(Renderer::new()),
38            false => None
39        };
40
41        Self {
42            event_loop,
43            user_data,
44            timer: TimingStruct::new(),
45            renderer,
46        }
47    }
48
49    pub fn run(mut self) {
50        let proxy = self.event_loop.create_proxy();
51        self.event_loop.run(move |event, elwt| {
52            elwt.set_control_flow(ControlFlow::Poll);
53            match event {
54                //Event::WindowEvent { event, .. } => match event {
55                //    WindowEvent::Resized(size) => {
56                //        if size.width != 0 && size.height != 0 {
57                //            // Some platforms like EGL require resizing GL surface to update the size
58                //            // Notable platforms here are Wayland and macOS, other don't require it
59                //            // and the function is no-op, but it's wise to resize it for portability
60                //            // reasons.
61                //        }
62                //    },
63                //    WindowEvent::CloseRequested
64                //    | WindowEvent::KeyboardInput {
65                //        event: KeyEvent { logical_key: Key::Named(NamedKey::Escape), .. },
66                //        ..
67                //    } => window_target.exit(),
68                //    _ => (),
69                //},
70                Event::AboutToWait => {
71                    proxy.send_event(GlobalEvent::Update).unwrap();
72                },
73                Event::UserEvent(global_event) => {
74                    match global_event {
75                        GlobalEvent::Update => {
76                            let time_info = self.timer.update(100);
77
78                            for _ in 0..time_info.fixed_steps {
79                                self.user_data.fixed_update(time_info.fixed_delta);
80                            }
81                            
82                            self.user_data.update(time_info.delta);
83                        },
84                        GlobalEvent::Shutdown => {
85                            elwt.exit()
86                        }
87                    }
88                },
89                _ => ()
90            }
91        }).unwrap()
92    }
93}
aspen_engine/application/mod.rs

aspen_engine/application/
mod.rs
