Reorganising file and module structure.

Cargo.lock

@@ -416,6 +416,27 @@ version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f27ae1dd37df86211c42e150270f82743308803d90a6f6e6651cd730d5e1732f"
 
+[[package]]
+name = "derive_more"
+version = "2.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d751e9e49156b02b44f9c1815bcb94b984cdcc4396ecc32521c739452808b134"
+dependencies = [
+ "derive_more-impl",
+]
+
+[[package]]
+name = "derive_more-impl"
+version = "2.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "799a97264921d8623a957f6c3b9011f3b5492f557bbb7a5a19b7fa6d06ba8dcb"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "rustc_version",
+ "syn",
+]
+
 [[package]]
 name = "dispatch"
 version = "0.2.0"
@@ -577,6 +598,7 @@ dependencies = [
  "anyhow",
  "console_error_panic_hook",
  "console_log",
+ "derive_more",
  "env_logger",
  "log",
  "pollster",

Cargo.toml

@@ -19,6 +19,7 @@ log = "0.4"
 wgpu = "29.0.3"
 pollster = "0.4.0"
 console_error_panic_hook = "0.1.7"
+derive_more = "2.1.1"
 
 [target.'cfg(target_arch = "wasm32")'.dependencies]
 console_error_panic_hook = "0.1.6"

src/engine.rs

@@ -0,0 +1,479 @@
+#![recursion_limit = "256"]
+// Credit of most code to https://sotrh.github.io/learn-wgpu/ since I'm not familiar with wgpu
+use std::sync::Arc;
+
+#[cfg(target_arch = "wasm32")]
+use wasm_bindgen::prelude::*;
+use winit::dpi::PhysicalPosition;
+#[cfg(target_arch = "wasm32")]
+use winit::platform::web::EventLoopExtWebSys;
+use winit::{
+  application::ApplicationHandler,
+  event::*,
+  event_loop::{ActiveEventLoop, EventLoop},
+  keyboard::{KeyCode, PhysicalKey},
+  window::Window,
+};
+
+// This will store the state of our game
+pub struct State {
+  surface: wgpu::Surface<'static>,
+  device: wgpu::Device,
+  queue: wgpu::Queue,
+  config: wgpu::SurfaceConfiguration,
+  is_surface_configured: bool,
+  window: Arc<Window>,
+  render_pipeline1: wgpu::RenderPipeline,
+  render_pipeline2: wgpu::RenderPipeline,
+  other_pipeline: bool,
+  sky: wgpu::Color,
+}
+
+impl State {
+  // We don't need this to be async right now,
+  // but we will in the next tutorial
+  pub async fn new(window: Arc<Window>) -> anyhow::Result<Self> {
+    let size = window.inner_size();
+
+    // The instance is a handle to our GPU
+    // BackendBit::PRIMARY => Vulkan + Metal + DX12 + Browser WebGPU
+    let instance = wgpu::Instance::new(wgpu::InstanceDescriptor {
+      #[cfg(not(target_arch = "wasm32"))]
+      backends: wgpu::Backends::PRIMARY,
+      #[cfg(target_arch = "wasm32")]
+      backends: wgpu::Backends::GL,
+      flags: Default::default(),
+      memory_budget_thresholds: Default::default(),
+      backend_options: Default::default(),
+      display: None,
+    });
+
+    let surface = instance.create_surface(window.clone()).unwrap();
+
+    let adapter = instance
+      .request_adapter(&wgpu::RequestAdapterOptions {
+        power_preference: wgpu::PowerPreference::default(),
+        compatible_surface: Some(&surface),
+        force_fallback_adapter: false,
+      })
+      .await?;
+
+    let (device, queue) = adapter
+      .request_device(&wgpu::DeviceDescriptor {
+        label: None,
+        required_features: wgpu::Features::empty(),
+        experimental_features: wgpu::ExperimentalFeatures::disabled(),
+        // WebGL doesn't support all of wgpu's features, so if
+        // we're building for the web we'll have to disable some.
+        required_limits: if cfg!(target_arch = "wasm32") {
+          wgpu::Limits::downlevel_webgl2_defaults()
+        } else {
+          wgpu::Limits::default()
+        },
+        memory_hints: Default::default(),
+        trace: wgpu::Trace::Off,
+      })
+      .await?;
+
+    let surface_caps = surface.get_capabilities(&adapter);
+    // Shader code in this tutorial assumes an sRGB surface texture. Using a different
+    // one will result in all the colors coming out darker. If you want to support non
+    // sRGB surfaces, you'll need to account for that when drawing to the frame.
+    let surface_format = surface_caps
+      .formats
+      .iter()
+      .find(|f| f.is_srgb())
+      .copied()
+      .unwrap_or(surface_caps.formats[0]);
+    let config = wgpu::SurfaceConfiguration {
+      usage: wgpu::TextureUsages::RENDER_ATTACHMENT,
+      format: surface_format,
+      width: size.width,
+      height: size.height,
+      present_mode: surface_caps.present_modes[0],
+      alpha_mode: surface_caps.alpha_modes[0],
+      view_formats: vec![],
+      desired_maximum_frame_latency: 2,
+    };
+
+    let shader1 = device.create_shader_module(wgpu::include_wgsl!("assets/shader.wgsl"));
+
+    let render_pipeline_layout1 =
+      device.create_pipeline_layout(&wgpu::PipelineLayoutDescriptor {
+        label: Some("Render Pipeline Layout"),
+        bind_group_layouts: &[],
+        immediate_size: 0,
+      });
+
+    let render_pipeline1 = device.create_render_pipeline(&wgpu::RenderPipelineDescriptor {
+      label: Some("Render Pipeline"),
+      layout: Some(&render_pipeline_layout1),
+      vertex: wgpu::VertexState {
+        module: &shader1,
+        entry_point: Some("vs_main"), // 1.
+        buffers: &[],                 // 2.
+        compilation_options: wgpu::PipelineCompilationOptions::default(),
+      },
+      fragment: Some(wgpu::FragmentState {
+        // 3.
+        module: &shader1,
+        entry_point: Some("fs_main"),
+        targets: &[Some(wgpu::ColorTargetState {
+          // 4.
+          format: config.format,
+          blend: Some(wgpu::BlendState::REPLACE),
+          write_mask: wgpu::ColorWrites::ALL,
+        })],
+        compilation_options: wgpu::PipelineCompilationOptions::default(),
+      }),
+      primitive: wgpu::PrimitiveState {
+        topology: wgpu::PrimitiveTopology::TriangleList, // 1.
+        strip_index_format: None,
+        front_face: wgpu::FrontFace::Ccw, // 2.
+        cull_mode: Some(wgpu::Face::Back),
+        // Setting this to anything other than Fill requires Features::NON_FILL_POLYGON_MODE
+        polygon_mode: wgpu::PolygonMode::Fill,
+        // Requires Features::DEPTH_CLIP_CONTROL
+        unclipped_depth: false,
+        // Requires Features::CONSERVATIVE_RASTERIZATION
+        conservative: false,
+      },
+      depth_stencil: None, // 1.
+      multisample: wgpu::MultisampleState {
+        count: 1,                         // 2.
+        mask: !0,                         // 3.
+        alpha_to_coverage_enabled: false, // 4.
+      },
+      multiview_mask: None, // 5.
+      cache: None,          // 6.
+    });
+
+    let shader2 = device.create_shader_module(wgpu::include_wgsl!("assets/shader2.wgsl"));
+
+    let render_pipeline_layout2 =
+      device.create_pipeline_layout(&wgpu::PipelineLayoutDescriptor {
+        label: Some("Render Pipeline Layout"),
+        bind_group_layouts: &[],
+        immediate_size: 0,
+      });
+
+    let render_pipeline2 = device.create_render_pipeline(&wgpu::RenderPipelineDescriptor {
+      label: Some("Render Pipeline"),
+      layout: Some(&render_pipeline_layout2),
+      vertex: wgpu::VertexState {
+        module: &shader2,
+        entry_point: Some("vs_main"), // 1.
+        buffers: &[],                 // 2.
+        compilation_options: wgpu::PipelineCompilationOptions::default(),
+      },
+      fragment: Some(wgpu::FragmentState {
+        // 3.
+        module: &shader2,
+        entry_point: Some("fs_main"),
+        targets: &[Some(wgpu::ColorTargetState {
+          // 4.
+          format: config.format,
+          blend: Some(wgpu::BlendState::REPLACE),
+          write_mask: wgpu::ColorWrites::ALL,
+        })],
+        compilation_options: wgpu::PipelineCompilationOptions::default(),
+      }),
+      primitive: wgpu::PrimitiveState {
+        topology: wgpu::PrimitiveTopology::TriangleList, // 1.
+        strip_index_format: None,
+        front_face: wgpu::FrontFace::Ccw, // 2.
+        cull_mode: Some(wgpu::Face::Back),
+        // Setting this to anything other than Fill requires Features::NON_FILL_POLYGON_MODE
+        polygon_mode: wgpu::PolygonMode::Fill,
+        // Requires Features::DEPTH_CLIP_CONTROL
+        unclipped_depth: false,
+        // Requires Features::CONSERVATIVE_RASTERIZATION
+        conservative: false,
+      },
+      depth_stencil: None, // 1.
+      multisample: wgpu::MultisampleState {
+        count: 1,                         // 2.
+        mask: !0,                         // 3.
+        alpha_to_coverage_enabled: false, // 4.
+      },
+      multiview_mask: None, // 5.
+      cache: None,          // 6.
+    });
+
+    Ok(Self {
+      surface,
+      device,
+      queue,
+      config,
+      is_surface_configured: false,
+      window,
+      render_pipeline1,
+      render_pipeline2,
+      other_pipeline: false,
+      sky: wgpu::Color {
+        r: 0.1,
+        g: 0.2,
+        b: 0.3,
+        a: 1.0,
+      },
+    })
+  }
+
+  pub fn resize(&mut self, width: u32, height: u32) {
+    if width > 0 && height > 0 {
+      let max = 2048;
+      self.config.width = width.min(max);
+      self.config.height = height.min(max);
+      self.surface.configure(&self.device, &self.config);
+      self.is_surface_configured = true;
+    }
+  }
+
+  fn update(&mut self) {
+    // ...
+  }
+
+  fn render(&mut self) -> anyhow::Result<()> {
+    self.window.request_redraw();
+
+    // We can't render unless the surface is configured
+    if !self.is_surface_configured {
+      return Ok(());
+    }
+
+    let output = match self.surface.get_current_texture() {
+      wgpu::CurrentSurfaceTexture::Success(surface_texture) => surface_texture,
+      wgpu::CurrentSurfaceTexture::Suboptimal(surface_texture) => {
+        self.surface.configure(&self.device, &self.config);
+        surface_texture
+      }
+      wgpu::CurrentSurfaceTexture::Timeout
+      | wgpu::CurrentSurfaceTexture::Occluded
+      | wgpu::CurrentSurfaceTexture::Validation => {
+        // Skip this frame
+        return Ok(());
+      }
+      wgpu::CurrentSurfaceTexture::Outdated => {
+        self.surface.configure(&self.device, &self.config);
+        return Ok(());
+      }
+      wgpu::CurrentSurfaceTexture::Lost => {
+        // You could recreate the devices and all resources
+        // created with it here, but we'll just bail
+        anyhow::bail!("Lost device");
+      }
+    };
+    let view = output
+      .texture
+      .create_view(&wgpu::TextureViewDescriptor::default());
+    let mut encoder = self
+      .device
+      .create_command_encoder(&wgpu::CommandEncoderDescriptor {
+        label: Some("Render Encoder"),
+      });
+    {
+      let mut render_pass = encoder.begin_render_pass(&wgpu::RenderPassDescriptor {
+        label: Some("Render Pass"),
+        color_attachments: &[Some(wgpu::RenderPassColorAttachment {
+          view: &view,
+          resolve_target: None,
+          depth_slice: None,
+          ops: wgpu::Operations {
+            load: wgpu::LoadOp::Clear(self.sky),
+            store: wgpu::StoreOp::Store,
+          },
+        })],
+        depth_stencil_attachment: None,
+        occlusion_query_set: None,
+        timestamp_writes: None,
+        multiview_mask: None,
+      });
+
+      if self.other_pipeline {
+        render_pass.set_pipeline(&self.render_pipeline1);
+      } else {
+        render_pass.set_pipeline(&self.render_pipeline2);
+      }
+      render_pass.draw(0..3, 0..1); // 3.
+    }
+
+    // submit will accept anything that implements IntoIter
+    self.queue.submit(std::iter::once(encoder.finish()));
+    output.present();
+
+    Ok(())
+  }
+
+  fn handle_key(&mut self, event_loop: &ActiveEventLoop, code: KeyCode, is_pressed: bool) {
+    match (code, is_pressed) {
+      (KeyCode::Escape, true) => event_loop.exit(),
+      (KeyCode::Space, true) => {
+        self.other_pipeline = !self.other_pipeline;
+      }
+      _ => {}
+    }
+  }
+
+  fn handle_mouse_moved(&mut self, position: PhysicalPosition<f64>) {
+    self.sky = wgpu::Color {
+      r: 0.3,
+      g: position.x / 1000.0,
+      b: position.y / 1000.0,
+      a: 1.0,
+    }
+  }
+}
+
+pub struct App {
+  #[cfg(target_arch = "wasm32")]
+  proxy: Option<winit::event_loop::EventLoopProxy<State>>,
+  state: Option<State>,
+}
+
+impl App {
+  pub fn new(#[cfg(target_arch = "wasm32")] event_loop: &EventLoop<State>) -> Self {
+    #[cfg(target_arch = "wasm32")]
+    let proxy = Some(event_loop.create_proxy());
+    Self {
+      state: None,
+      #[cfg(target_arch = "wasm32")]
+      proxy,
+    }
+  }
+}
+
+impl ApplicationHandler<State> for App {
+  fn resumed(&mut self, event_loop: &ActiveEventLoop) {
+    #[allow(unused_mut)]
+    let mut window_attributes = Window::default_attributes();
+
+    #[cfg(target_arch = "wasm32")]
+    {
+      use wasm_bindgen::JsCast;
+      use winit::platform::web::WindowAttributesExtWebSys;
+
+      const CANVAS_ID: &str = "canvas";
+
+      let window = wgpu::web_sys::window().unwrap_throw();
+      let document = window.document().unwrap_throw();
+      let canvas = document.get_element_by_id(CANVAS_ID).unwrap_throw();
+      let html_canvas_element = canvas.unchecked_into();
+      window_attributes = window_attributes.with_canvas(Some(html_canvas_element));
+    }
+
+    let window = Arc::new(event_loop.create_window(window_attributes).unwrap());
+
+    #[cfg(not(target_arch = "wasm32"))]
+    {
+      // If we are not on web we can use pollster to
+      // await the window creation
+      self.state = Some(pollster::block_on(State::new(window)).unwrap());
+    }
+
+    #[cfg(target_arch = "wasm32")]
+    {
+      // Run the future asynchronously and use the
+      // proxy to send the results to the event loop
+      if let Some(proxy) = self.proxy.take() {
+        wasm_bindgen_futures::spawn_local(async move {
+          assert!(
+            proxy
+              .send_event(
+                State::new(window)
+                  .await
+                  .expect("Unable to create canvas!!!")
+              )
+              .is_ok()
+          )
+        });
+      }
+    }
+  }
+
+  #[allow(unused_mut)]
+  fn user_event(&mut self, _event_loop: &ActiveEventLoop, mut event: State) {
+    // This is where proxy.send_event() ends up
+    #[cfg(target_arch = "wasm32")]
+    {
+      event.window.request_redraw();
+      event.resize(
+        event.window.inner_size().width,
+        event.window.inner_size().height,
+      );
+    }
+    self.state = Some(event);
+  }
+
+  fn window_event(
+    &mut self,
+    event_loop: &ActiveEventLoop,
+    _window_id: winit::window::WindowId,
+    event: WindowEvent,
+  ) {
+    let state = match &mut self.state {
+      Some(canvas) => canvas,
+      None => return,
+    };
+
+    match event {
+      WindowEvent::CloseRequested => event_loop.exit(),
+      WindowEvent::Resized(size) => state.resize(size.width, size.height),
+      WindowEvent::RedrawRequested => {
+        state.update();
+        match state.render() {
+          Ok(_) => {}
+          Err(e) => {
+            // Log the error and exit gracefully
+            log::error!("{e}");
+            event_loop.exit();
+          }
+        }
+      }
+      WindowEvent::CursorMoved { position: pos, .. } => state.handle_mouse_moved(pos),
+      WindowEvent::KeyboardInput {
+        event:
+        KeyEvent {
+          physical_key: PhysicalKey::Code(code),
+          state: key_state,
+          ..
+        },
+        ..
+      } => state.handle_key(event_loop, code, key_state.is_pressed()),
+      _ => {}
+    }
+  }
+}
+
+pub fn run() -> anyhow::Result<()> {
+  #[cfg(not(target_arch = "wasm32"))]
+  {
+    env_logger::init();
+  }
+  #[cfg(target_arch = "wasm32")]
+  {
+    console_log::init_with_level(log::Level::Info).unwrap_throw();
+  }
+
+  let event_loop = EventLoop::with_user_event().build()?;
+  #[cfg(not(target_arch = "wasm32"))]
+  {
+    let mut app = App::new();
+    event_loop.run_app(&mut app)?;
+  }
+  #[cfg(target_arch = "wasm32")]
+  {
+    let app = App::new(&event_loop);
+    event_loop.spawn_app(app);
+  }
+
+  Ok(())
+}
+
+#[cfg(target_arch = "wasm32")]
+#[wasm_bindgen(start)]
+pub fn run_web() -> Result<(), wasm_bindgen::JsValue> {
+  console_error_panic_hook::set_once();
+  run().unwrap_throw();
+
+  Ok(())
+}

src/examples/script.lua

@@ -0,0 +1 @@
+print("hello world")

src/examples/test.nel

@@ -1,11 +0,0 @@
-/*
-@native @inline
-@expr(say (&a: String) (b: i32) times)
-fn say_something(&a: String, b: i32) -> Pack<String,i32> {
-    for index in 0..b {
-        a += a
-    }
-    return {a,b}
-}
-*/
-println("where the huzz")

src/lang.rs

@@ -1,5 +1,49 @@
+use derive_more;
+
+// State of 'cursor' that is reading through the text stream
+// todo: implement locations for the 'cursor' through Piece<T>
+struct Reader<'a>(&'a str);
+struct Piece<T> {
+  line: usize,
+  index: usize,
+  column: usize,
+  piece: T,
+}
+
+// Strips comments and whitespace
+// todo: make this a Option<&str> and handle errors.
+// todo: implement comments returning for debugging.
+fn trim(_str: &str) -> &str {
+  let str = _str.trim();
+  if str.starts_with("--") {
+    if str[2..].starts_with("[[") {
+      match str.find("]]") {
+        Some(i) => {
+          &str[i+2..].trim()
+        }
+        _ => {
+          ""
+        }
+      }
+    } else {
+      match str.find("\n") {
+        Some(i) => {
+          &str[i+1..].trim()
+        }
+        _ => {
+          ""
+        }
+      }
+    }
+  } else {
+    str.trim()
+  }
+}
+
+// Macro for expanding syntax form into a struct
 macro_rules! definition {
   {@build ($n:ident structure) ($($t:tt)*) null () } => {
+    #[derive(Display)]
     struct $n ($($t)*);
   };
   {@build ($n:ident enumeration new ($($f:tt)*) ($m:ident($($mt:tt)*)$($r:tt)*)) () null ()} => {
@@ -18,6 +62,7 @@ macro_rules! definition {
     definition!{@build ($n enumeration filter ($($e)*$m,) ($($t)*))}
   };
   {@build ($n:ident enumeration filter ($($e:tt)*) ())} => {
+    #[derive(Display)]
     enum $n {
       $($e)*
     }
@@ -53,7 +98,7 @@ macro_rules! definition {
     definition!{@build $m ($($t)*) $i ($($a)*$n) ($($b)*) $($r)*}
   };
 }
-
+// Macro for expanding syntax form into an implementation of trait Parse
 macro_rules! implement {
   {@begin $n:ident structure $($t:tt)*} => {
     implement!{@build (state result) (structure $n) {} {} $($t)*}
@@ -197,7 +242,6 @@ macro_rules! implement {
     }
   };
 }
-
 macro_rules! class {
   ($i:ident($($t:tt)*)) => {
     definition!{@build ($i structure) () null () $($t)*}
@@ -224,35 +268,130 @@ trait Parse {
 }
 
 impl Parse for Name {
-  fn consume(state: &str) -> Result<(Self, &str), Error>
+  fn consume(_state: &str) -> Result<(Self, &str), Error>
   where
     Self: Sized
   {
-    todo!()
+    let state = _state.trim_start();
+    let mut chars = state.chars();
+    let mut end = 1;
+    match state.chars().next() {
+      None => {
+        return Err("Expected identifier".into())
+      }
+      Some(c) => {
+        if !(c.is_alphabetic() || c == '_') {
+          return Err("Identifier must begin with alphabetic character".into())
         }
       }
-impl Parse for String {
-  fn consume(state: &str) -> Result<(Self, &str), Error>
-  where
-    Self: Sized
-  {
-    todo!()
+    };
+    end += state.chars().take_while(|c| { c.is_alphanumeric() || *c == '_' }).count();
+    Ok((Name(state[..end].into()), &state[end..]))
   }
 }
 
 impl Parse for Number {
-  fn consume(state: &str) -> Result<(Self, &str), Error>
+  fn consume(_state: &str) -> Result<(Self, &str), Error>
   where
     Self: Sized
   {
-    todo!()
+    let state = _state.trim_start();
+    let error = Err("Could not parse number".into());
+    if state.starts_with("0x") {
+      let end = state[2..].chars().take_while(|c| c.is_digit(16)).count()+2;
+      if end == 0 {
+        error
+      } else {
+        Ok((Number(state[..end].into()),&state[end..]))
+      }
+    } else {
+      let end = state.chars().take_while(|c| c.is_digit(10) || *c == '.').count();
+      if end == 0 {
+        error
+      } else {
+        Ok((Number(state[..end].into()),&state[end..]))
+      }
+    }
   }
 }
 
-parser!(
-  Block2 ( {Statement} [Return] );
-);
+impl Parse for String {
+  fn consume(_state: &str) -> Result<(Self, &str), Error>
+  where
+    Self: Sized,
+  {
+    let state = _state.trim_start();
+    let chars: &mut std::str::Chars = &mut state.chars();
+    let mut string = String::new();
+    let term1: char;
+    let term2: Option<char>;
+    match chars.next() {
+      Some('"') => {
+        term1 = '"';
+        term2 = None;
+      },
+      Some('\'') => {
+        term1 = '\'';
+        term2 = None;
+      }
+      Some('[') if chars.next().is_some_and(|it| it == '[') => {
+        term1 = ']';
+        term2 = Some(']');
+      }
+      _ => {
+        return Err("Could not parse string".into())
+      }
+    }
+    loop {
+      match chars.next() {
+        Some(c) => {
+          match c {
+            '\\' => {
+              match chars.next() {
+                Some(c) => {
+                  match c {
+                    'n' => string.push('\n'),
+                    'r' => string.push('\r'),
+                    't' => string.push('\t'),
+                    '"' => string.push('"'),
+                    '\'' => string.push('\''),
+                    '\\' => string.push('\\'),
+                    it => {
+                      string.push(it);
+                    }
+                  }
+                }
+                None => {}
+              }
+            }
+            '\r' => {} // todo: ?
+            '\n' if term2.is_none() => {
+              return Err("Found newline while parsing string".into())
+            }
+            term if term == term1 => {
+              // If the second terminator exists and is the next char, or there is no second terminator
+              if !term2.is_some() || chars.next().is_some_and(|it| it == term2.unwrap()) {
+                return Ok((string,chars.as_str()))
+              // There is a second terminator and it wasn't the next char
+              } else {
+                string.push(term)
+              }
+            }
+            _ => {
+              string.push(c);
+            }
+          }
+        }
+        None => {
+          return Err("Found EOF while parsing string".into())
+        }
+      }
+    }
+  }
+}
 
+// todo: reimplement attrib here
+// https://www.lua.org/manual/5.5/manual.html#9
 parser! {
   // LiteralString -> "..."
   // LiteralNumber -> 0x... 123.456

src/lib.rs

@@ -1,482 +1,2 @@
-#![recursion_limit = "256"]
+pub mod engine;
 mod lang;
-mod neural;
-
-// Credit of most code to https://sotrh.github.io/learn-wgpu/ since I come from OpenGl not wgpu
-use std::sync::Arc;
-
-#[cfg(target_arch = "wasm32")]
-use wasm_bindgen::prelude::*;
-use winit::dpi::PhysicalPosition;
-#[cfg(target_arch = "wasm32")]
-use winit::platform::web::EventLoopExtWebSys;
-use winit::{
-    application::ApplicationHandler,
-    event::*,
-    event_loop::{ActiveEventLoop, EventLoop},
-    keyboard::{KeyCode, PhysicalKey},
-    window::Window,
-};
-
-// This will store the state of our game
-pub struct State {
-    surface: wgpu::Surface<'static>,
-    device: wgpu::Device,
-    queue: wgpu::Queue,
-    config: wgpu::SurfaceConfiguration,
-    is_surface_configured: bool,
-    window: Arc<Window>,
-    render_pipeline1: wgpu::RenderPipeline,
-    render_pipeline2: wgpu::RenderPipeline,
-    other_pipeline: bool,
-    sky: wgpu::Color,
-}
-
-impl State {
-    // We don't need this to be async right now,
-    // but we will in the next tutorial
-    pub async fn new(window: Arc<Window>) -> anyhow::Result<Self> {
-        let size = window.inner_size();
-
-        // The instance is a handle to our GPU
-        // BackendBit::PRIMARY => Vulkan + Metal + DX12 + Browser WebGPU
-        let instance = wgpu::Instance::new(wgpu::InstanceDescriptor {
-            #[cfg(not(target_arch = "wasm32"))]
-            backends: wgpu::Backends::PRIMARY,
-            #[cfg(target_arch = "wasm32")]
-            backends: wgpu::Backends::GL,
-            flags: Default::default(),
-            memory_budget_thresholds: Default::default(),
-            backend_options: Default::default(),
-            display: None,
-        });
-
-        let surface = instance.create_surface(window.clone()).unwrap();
-
-        let adapter = instance
-            .request_adapter(&wgpu::RequestAdapterOptions {
-                power_preference: wgpu::PowerPreference::default(),
-                compatible_surface: Some(&surface),
-                force_fallback_adapter: false,
-            })
-            .await?;
-
-        let (device, queue) = adapter
-            .request_device(&wgpu::DeviceDescriptor {
-                label: None,
-                required_features: wgpu::Features::empty(),
-                experimental_features: wgpu::ExperimentalFeatures::disabled(),
-                // WebGL doesn't support all of wgpu's features, so if
-                // we're building for the web we'll have to disable some.
-                required_limits: if cfg!(target_arch = "wasm32") {
-                    wgpu::Limits::downlevel_webgl2_defaults()
-                } else {
-                    wgpu::Limits::default()
-                },
-                memory_hints: Default::default(),
-                trace: wgpu::Trace::Off,
-            })
-            .await?;
-
-        let surface_caps = surface.get_capabilities(&adapter);
-        // Shader code in this tutorial assumes an sRGB surface texture. Using a different
-        // one will result in all the colors coming out darker. If you want to support non
-        // sRGB surfaces, you'll need to account for that when drawing to the frame.
-        let surface_format = surface_caps
-            .formats
-            .iter()
-            .find(|f| f.is_srgb())
-            .copied()
-            .unwrap_or(surface_caps.formats[0]);
-        let config = wgpu::SurfaceConfiguration {
-            usage: wgpu::TextureUsages::RENDER_ATTACHMENT,
-            format: surface_format,
-            width: size.width,
-            height: size.height,
-            present_mode: surface_caps.present_modes[0],
-            alpha_mode: surface_caps.alpha_modes[0],
-            view_formats: vec![],
-            desired_maximum_frame_latency: 2,
-        };
-
-        let shader1 = device.create_shader_module(wgpu::include_wgsl!("shader.wgsl"));
-
-        let render_pipeline_layout1 =
-            device.create_pipeline_layout(&wgpu::PipelineLayoutDescriptor {
-                label: Some("Render Pipeline Layout"),
-                bind_group_layouts: &[],
-                immediate_size: 0,
-            });
-
-        let render_pipeline1 = device.create_render_pipeline(&wgpu::RenderPipelineDescriptor {
-            label: Some("Render Pipeline"),
-            layout: Some(&render_pipeline_layout1),
-            vertex: wgpu::VertexState {
-                module: &shader1,
-                entry_point: Some("vs_main"), // 1.
-                buffers: &[],                 // 2.
-                compilation_options: wgpu::PipelineCompilationOptions::default(),
-            },
-            fragment: Some(wgpu::FragmentState {
-                // 3.
-                module: &shader1,
-                entry_point: Some("fs_main"),
-                targets: &[Some(wgpu::ColorTargetState {
-                    // 4.
-                    format: config.format,
-                    blend: Some(wgpu::BlendState::REPLACE),
-                    write_mask: wgpu::ColorWrites::ALL,
-                })],
-                compilation_options: wgpu::PipelineCompilationOptions::default(),
-            }),
-            primitive: wgpu::PrimitiveState {
-                topology: wgpu::PrimitiveTopology::TriangleList, // 1.
-                strip_index_format: None,
-                front_face: wgpu::FrontFace::Ccw, // 2.
-                cull_mode: Some(wgpu::Face::Back),
-                // Setting this to anything other than Fill requires Features::NON_FILL_POLYGON_MODE
-                polygon_mode: wgpu::PolygonMode::Fill,
-                // Requires Features::DEPTH_CLIP_CONTROL
-                unclipped_depth: false,
-                // Requires Features::CONSERVATIVE_RASTERIZATION
-                conservative: false,
-            },
-            depth_stencil: None, // 1.
-            multisample: wgpu::MultisampleState {
-                count: 1,                         // 2.
-                mask: !0,                         // 3.
-                alpha_to_coverage_enabled: false, // 4.
-            },
-            multiview_mask: None, // 5.
-            cache: None,          // 6.
-        });
-
-        let shader2 = device.create_shader_module(wgpu::include_wgsl!("shader2.wgsl"));
-
-        let render_pipeline_layout2 =
-            device.create_pipeline_layout(&wgpu::PipelineLayoutDescriptor {
-                label: Some("Render Pipeline Layout"),
-                bind_group_layouts: &[],
-                immediate_size: 0,
-            });
-
-        let render_pipeline2 = device.create_render_pipeline(&wgpu::RenderPipelineDescriptor {
-            label: Some("Render Pipeline"),
-            layout: Some(&render_pipeline_layout2),
-            vertex: wgpu::VertexState {
-                module: &shader2,
-                entry_point: Some("vs_main"), // 1.
-                buffers: &[],                 // 2.
-                compilation_options: wgpu::PipelineCompilationOptions::default(),
-            },
-            fragment: Some(wgpu::FragmentState {
-                // 3.
-                module: &shader2,
-                entry_point: Some("fs_main"),
-                targets: &[Some(wgpu::ColorTargetState {
-                    // 4.
-                    format: config.format,
-                    blend: Some(wgpu::BlendState::REPLACE),
-                    write_mask: wgpu::ColorWrites::ALL,
-                })],
-                compilation_options: wgpu::PipelineCompilationOptions::default(),
-            }),
-            primitive: wgpu::PrimitiveState {
-                topology: wgpu::PrimitiveTopology::TriangleList, // 1.
-                strip_index_format: None,
-                front_face: wgpu::FrontFace::Ccw, // 2.
-                cull_mode: Some(wgpu::Face::Back),
-                // Setting this to anything other than Fill requires Features::NON_FILL_POLYGON_MODE
-                polygon_mode: wgpu::PolygonMode::Fill,
-                // Requires Features::DEPTH_CLIP_CONTROL
-                unclipped_depth: false,
-                // Requires Features::CONSERVATIVE_RASTERIZATION
-                conservative: false,
-            },
-            depth_stencil: None, // 1.
-            multisample: wgpu::MultisampleState {
-                count: 1,                         // 2.
-                mask: !0,                         // 3.
-                alpha_to_coverage_enabled: false, // 4.
-            },
-            multiview_mask: None, // 5.
-            cache: None,          // 6.
-        });
-
-        Ok(Self {
-            surface,
-            device,
-            queue,
-            config,
-            is_surface_configured: false,
-            window,
-            render_pipeline1,
-            render_pipeline2,
-            other_pipeline: false,
-            sky: wgpu::Color {
-                r: 0.1,
-                g: 0.2,
-                b: 0.3,
-                a: 1.0,
-            },
-        })
-    }
-
-    pub fn resize(&mut self, width: u32, height: u32) {
-        if width > 0 && height > 0 {
-            let max = 2048;
-            self.config.width = width.min(max);
-            self.config.height = height.min(max);
-            self.surface.configure(&self.device, &self.config);
-            self.is_surface_configured = true;
-        }
-    }
-
-    fn update(&mut self) {
-        // ...
-    }
-
-    fn render(&mut self) -> anyhow::Result<()> {
-        self.window.request_redraw();
-
-        // We can't render unless the surface is configured
-        if !self.is_surface_configured {
-            return Ok(());
-        }
-
-        let output = match self.surface.get_current_texture() {
-            wgpu::CurrentSurfaceTexture::Success(surface_texture) => surface_texture,
-            wgpu::CurrentSurfaceTexture::Suboptimal(surface_texture) => {
-                self.surface.configure(&self.device, &self.config);
-                surface_texture
-            }
-            wgpu::CurrentSurfaceTexture::Timeout
-            | wgpu::CurrentSurfaceTexture::Occluded
-            | wgpu::CurrentSurfaceTexture::Validation => {
-                // Skip this frame
-                return Ok(());
-            }
-            wgpu::CurrentSurfaceTexture::Outdated => {
-                self.surface.configure(&self.device, &self.config);
-                return Ok(());
-            }
-            wgpu::CurrentSurfaceTexture::Lost => {
-                // You could recreate the devices and all resources
-                // created with it here, but we'll just bail
-                anyhow::bail!("Lost device");
-            }
-        };
-        let view = output
-            .texture
-            .create_view(&wgpu::TextureViewDescriptor::default());
-        let mut encoder = self
-            .device
-            .create_command_encoder(&wgpu::CommandEncoderDescriptor {
-                label: Some("Render Encoder"),
-            });
-        {
-            let mut render_pass = encoder.begin_render_pass(&wgpu::RenderPassDescriptor {
-                label: Some("Render Pass"),
-                color_attachments: &[Some(wgpu::RenderPassColorAttachment {
-                    view: &view,
-                    resolve_target: None,
-                    depth_slice: None,
-                    ops: wgpu::Operations {
-                        load: wgpu::LoadOp::Clear(self.sky),
-                        store: wgpu::StoreOp::Store,
-                    },
-                })],
-                depth_stencil_attachment: None,
-                occlusion_query_set: None,
-                timestamp_writes: None,
-                multiview_mask: None,
-            });
-
-            if self.other_pipeline {
-                render_pass.set_pipeline(&self.render_pipeline1);
-            } else {
-                render_pass.set_pipeline(&self.render_pipeline2);
-            }
-            render_pass.draw(0..3, 0..1); // 3.
-        }
-
-        // submit will accept anything that implements IntoIter
-        self.queue.submit(std::iter::once(encoder.finish()));
-        output.present();
-
-        Ok(())
-    }
-
-    fn handle_key(&mut self, event_loop: &ActiveEventLoop, code: KeyCode, is_pressed: bool) {
-        match (code, is_pressed) {
-            (KeyCode::Escape, true) => event_loop.exit(),
-            (KeyCode::Space, true) => {
-                self.other_pipeline = !self.other_pipeline;
-            }
-            _ => {}
-        }
-    }
-
-    fn handle_mouse_moved(&mut self, position: PhysicalPosition<f64>) {
-        self.sky = wgpu::Color {
-            r: 0.3,
-            g: position.x / 1000.0,
-            b: position.y / 1000.0,
-            a: 1.0,
-        }
-    }
-}
-
-pub struct App {
-    #[cfg(target_arch = "wasm32")]
-    proxy: Option<winit::event_loop::EventLoopProxy<State>>,
-    state: Option<State>,
-}
-
-impl App {
-    pub fn new(#[cfg(target_arch = "wasm32")] event_loop: &EventLoop<State>) -> Self {
-        #[cfg(target_arch = "wasm32")]
-        let proxy = Some(event_loop.create_proxy());
-        Self {
-            state: None,
-            #[cfg(target_arch = "wasm32")]
-            proxy,
-        }
-    }
-}
-
-impl ApplicationHandler<State> for App {
-    fn resumed(&mut self, event_loop: &ActiveEventLoop) {
-        #[allow(unused_mut)]
-        let mut window_attributes = Window::default_attributes();
-
-        #[cfg(target_arch = "wasm32")]
-        {
-            use wasm_bindgen::JsCast;
-            use winit::platform::web::WindowAttributesExtWebSys;
-
-            const CANVAS_ID: &str = "canvas";
-
-            let window = wgpu::web_sys::window().unwrap_throw();
-            let document = window.document().unwrap_throw();
-            let canvas = document.get_element_by_id(CANVAS_ID).unwrap_throw();
-            let html_canvas_element = canvas.unchecked_into();
-            window_attributes = window_attributes.with_canvas(Some(html_canvas_element));
-        }
-
-        let window = Arc::new(event_loop.create_window(window_attributes).unwrap());
-
-        #[cfg(not(target_arch = "wasm32"))]
-        {
-            // If we are not on web we can use pollster to
-            // await the window creation
-            self.state = Some(pollster::block_on(State::new(window)).unwrap());
-        }
-
-        #[cfg(target_arch = "wasm32")]
-        {
-            // Run the future asynchronously and use the
-            // proxy to send the results to the event loop
-            if let Some(proxy) = self.proxy.take() {
-                wasm_bindgen_futures::spawn_local(async move {
-                    assert!(
-                        proxy
-                            .send_event(
-                                State::new(window)
-                                    .await
-                                    .expect("Unable to create canvas!!!")
-                            )
-                            .is_ok()
-                    )
-                });
-            }
-        }
-    }
-
-    #[allow(unused_mut)]
-    fn user_event(&mut self, _event_loop: &ActiveEventLoop, mut event: State) {
-        // This is where proxy.send_event() ends up
-        #[cfg(target_arch = "wasm32")]
-        {
-            event.window.request_redraw();
-            event.resize(
-                event.window.inner_size().width,
-                event.window.inner_size().height,
-            );
-        }
-        self.state = Some(event);
-    }
-
-    fn window_event(
-        &mut self,
-        event_loop: &ActiveEventLoop,
-        _window_id: winit::window::WindowId,
-        event: WindowEvent,
-    ) {
-        let state = match &mut self.state {
-            Some(canvas) => canvas,
-            None => return,
-        };
-
-        match event {
-            WindowEvent::CloseRequested => event_loop.exit(),
-            WindowEvent::Resized(size) => state.resize(size.width, size.height),
-            WindowEvent::RedrawRequested => {
-                state.update();
-                match state.render() {
-                    Ok(_) => {}
-                    Err(e) => {
-                        // Log the error and exit gracefully
-                        log::error!("{e}");
-                        event_loop.exit();
-                    }
-                }
-            }
-            WindowEvent::CursorMoved { position: pos, .. } => state.handle_mouse_moved(pos),
-            WindowEvent::KeyboardInput {
-                event:
-                    KeyEvent {
-                        physical_key: PhysicalKey::Code(code),
-                        state: key_state,
-                        ..
-                    },
-                ..
-            } => state.handle_key(event_loop, code, key_state.is_pressed()),
-            _ => {}
-        }
-    }
-}
-
-pub fn run() -> anyhow::Result<()> {
-    #[cfg(not(target_arch = "wasm32"))]
-    {
-        env_logger::init();
-    }
-    #[cfg(target_arch = "wasm32")]
-    {
-        console_log::init_with_level(log::Level::Info).unwrap_throw();
-    }
-
-    let event_loop = EventLoop::with_user_event().build()?;
-    #[cfg(not(target_arch = "wasm32"))]
-    {
-        let mut app = App::new();
-        event_loop.run_app(&mut app)?;
-    }
-    #[cfg(target_arch = "wasm32")]
-    {
-        let app = App::new(&event_loop);
-        event_loop.spawn_app(app);
-    }
-
-    Ok(())
-}
-
-#[cfg(target_arch = "wasm32")]
-#[wasm_bindgen(start)]
-pub fn run_web() -> Result<(), wasm_bindgen::JsValue> {
-    console_error_panic_hook::set_once();
-    run().unwrap_throw();
-
-    Ok(())
-}

src/main.rs

@@ -1,6 +1,6 @@
 #![recursion_limit = "256"]
 
-use game::run;
+use game::engine::run;
 
 fn main() {
     run().unwrap();