Update example

Author: nanoqsh

dunge/src/el.rs

@@ -4,7 +4,7 @@ use {
         state::State,
         time::{Fps, Time},
         update::Update,
-        window::{self, View},
+        window::{self, View, WindowState},
     },
     std::{cell::Cell, error, fmt, ops, time::Duration},
     wgpu::SurfaceError,
@@ -27,14 +27,15 @@ pub type SmolStr = keyboard::SmolStr;
 /// Describes a button of a mouse controller.
 pub type MouseButton = event::MouseButton;
 
-pub fn run_local<U>(cx: Context, view: View, upd: U) -> Result<(), LoopError>
+pub fn run_local<U>(cx: Context, ws: WindowState, upd: U) -> Result<(), LoopError>
 where
     U: Update,
 {
     let lu = EventLoop::with_user_event()
         .build()
         .map_err(LoopError::EventLoop)?;
 
+    let view = View::new(ws);
     let mut handler = Handler::new(cx, view, upd);
     let out = lu.run_app(&mut handler).map_err(LoopError::EventLoop);
     out.or(handler.out)
@@ -352,6 +353,7 @@ type Target = event_loop::ActiveEventLoop;
 type Failure = Option<Box<dyn error::Error>>;
 
 #[deprecated]
+#[allow(dead_code)]
 fn handle<U>(cx: Context, view: View, mut upd: U) -> impl FnMut(Event<U::Event>, &Target) -> Failure
 where
     U: Update,
@@ -366,7 +368,7 @@ where
     const WAIT_TIME: Duration = Duration::from_millis(100);
 
     let mut ctrl = Control {
-        view: View::new(unimplemented!()),
+        view: unimplemented!(),
         resized: None,
         min_delta_time: Cell::new(Duration::from_secs_f32(1. / 60.)),
         delta_time: Duration::ZERO,

dunge/src/lib.rs

@@ -56,6 +56,9 @@ pub use crate::window::{from_element, window_state_from_element};
 
 #[cfg(feature = "winit")]
 pub use crate::{
-    el::{Buttons, Control, Flow, Key, KeyCode, LoopError, Mouse, MouseButton, SmolStr, Then},
+    el::{
+        run_local, Buttons, Control, Flow, Key, KeyCode, LoopError, Mouse, MouseButton, SmolStr,
+        Then,
+    },
     update::{update, update_with_event, update_with_state, Update},
 };

dunge/src/window.rs

@@ -361,11 +361,11 @@ pub struct View {
 }
 
 impl View {
-    pub fn new(state: WindowState) -> Self {
+    pub(crate) fn new(ws: WindowState) -> Self {
         Self {
-            init: Init::Empty(Box::new(state.attrs)),
+            init: Init::Empty(Box::new(ws.attrs)),
             id: WindowId::from(u64::MAX),
-            el: state.el,
+            el: ws.el,
             format: Format::default(),
             size: (1, 1),
         }

examples/cube/src/lib.rs

@@ -1,6 +1,6 @@
 type Error = Box<dyn std::error::Error>;
 
-pub fn run(window: dunge::window::Window) -> Result<(), Error> {
+pub async fn run(ws: dunge::window::WindowState) -> Result<(), Error> {
     use dunge::{
         color::Rgba,
         glam::{Mat4, Quat, Vec3},
@@ -37,7 +37,7 @@ pub fn run(window: dunge::window::Window) -> Result<(), Error> {
         p * m
     };
 
-    let cx = window.context();
+    let cx = dunge::context().await?;
     let cube_shader = cx.make_shader(cube);
     let mut r = 0.;
     let uniform = {
@@ -105,24 +105,27 @@ pub fn run(window: dunge::window::Window) -> Result<(), Error> {
     };
 
     let layer = cx.make_layer(&cube_shader, Format::window());
-    let upd = move |ctrl: &Control| {
-        for key in ctrl.pressed_keys() {
-            if key.code == KeyCode::Escape {
-                return Then::Close;
+    let upd = {
+        let cx = cx.clone();
+        move |ctrl: &Control| {
+            for key in ctrl.pressed_keys() {
+                if key.code == KeyCode::Escape {
+                    return Then::Close;
+                }
             }
-        }
 
-        r += ctrl.delta_time().as_secs_f32() * 0.5;
-        let mat = transform(r, ctrl.size());
-        uniform.update(&cx, mat);
-        Then::Run
+            r += ctrl.delta_time().as_secs_f32() * 0.5;
+            let mat = transform(r, ctrl.size());
+            uniform.update(&cx, mat);
+            Then::Run
+        }
     };
 
     let draw = move |mut frame: Frame| {
         let opts = Rgba::from_standard([0.1, 0.05, 0.15, 1.]);
         frame.layer(&layer, opts).bind(&bind_transform).draw(&mesh);
     };
 
-    window.run(dunge::update(upd, draw))?;
+    dunge::run_local(cx, ws, dunge::update(upd, draw))?;
     Ok(())
 }

examples/cube/src/main.rs

@@ -1,7 +1,7 @@
 fn main() {
     env_logger::init();
-    let window = helpers::block_on(dunge::window().with_title("Cube"));
-    if let Err(err) = window.map_err(Box::from).and_then(cube::run) {
+    let ws = dunge::window_state().with_title("Cube");
+    if let Err(err) = helpers::block_on(cube::run(ws)) {
         eprintln!("error: {err}");
     }
 }