client/src/args.rs

@@ -1,8 +1,7 @@
-use bevy::ecs::resource::Resource;
 use clap::{Parser, Subcommand};
 use common::network::{DEFAULT_ADDRESS, DEFAULT_PORT};
 
-#[derive(Resource, Parser, Default, Debug)]
+#[derive(Parser, Default, Debug)]
 #[command(version, about)]
 pub struct Args {
     #[command(subcommand)]
@@ -46,22 +45,24 @@ impl Args {
         use bevy::log::error;
         use web_sys::{UrlSearchParams, window};
 
-        let params = window()
+        let Some(window) = window() else {
-            .and_then(|window| window.location().search().ok())
+            return Self::default();
-            .and_then(|search| UrlSearchParams::new_with_str(&search).ok());
+        };
-
+        let Ok(search) = window.location().search() else {
-        if let Some(params) = params {
+            return Self::default();
-            if let Some(address) = params.get("connect") {
+        };
-                if let Some(digest) = params.get("digest") {
+        let Ok(params) = UrlSearchParams::new_with_str(&search) else {
-                    return Self {
+            return Self::default();
-                        mode: Some(Mode::Connect { address, digest }),
+        };
-                    };
+        let Some(address) = params.get("connect") else {
-                } else {
+            return Self::default();
-                    error!("Missing 'digest' parameter.");
+        };
-                }
+        let Some(digest) = params.get("digest") else {
-            }
+            error!("Missing 'digest' parameter.");
+            return Self::default();
+        };
+        Self {
+            mode: Some(Mode::Connect { address, digest }),
         }
-
-        Self::default()
     }
 }

client/src/block.rs

@@ -0,0 +1,31 @@
+use bevy::prelude::*;
+
+pub use common::block::*;
+
+#[derive(Resource)]
+pub struct BlockResources {
+    mesh: Handle<Mesh>,
+    material: Handle<StandardMaterial>,
+}
+
+pub fn setup_blocks(
+    mut commands: Commands,
+    mut meshes: ResMut<Assets<Mesh>>,
+    mut materials: ResMut<Assets<StandardMaterial>>,
+) {
+    commands.insert_resource(BlockResources {
+        mesh: meshes.add(Cuboid::new(1.0, 1.0, 1.0)),
+        material: materials.add(Color::srgb_u8(124, 144, 255)),
+    });
+}
+
+pub fn add_block_visuals(
+    add: On<Add, Block>,
+    mut commands: Commands,
+    resources: Res<BlockResources>,
+) {
+    commands.entity(add.entity).insert((
+        Mesh3d(resources.mesh.clone()),
+        MeshMaterial3d(resources.material.clone()),
+    ));
+}

client/src/block_assets.rs

@@ -1,39 +0,0 @@
-use bevy::prelude::*;
-use common::prelude::*;
-
-pub fn plugin(app: &mut App) {
-    app.add_observer(insert_block_visuals);
-    app.load_resource::<BlockAssets>();
-}
-
-#[derive(Resource, Asset, Reflect, Clone)]
-#[reflect(Resource)]
-pub struct BlockAssets {
-    #[dependency]
-    mesh: Handle<Mesh>,
-    #[dependency]
-    material: Handle<StandardMaterial>,
-}
-
-impl FromWorld for BlockAssets {
-    fn from_world(world: &mut World) -> Self {
-        let assets = world.resource::<AssetServer>();
-        Self {
-            mesh: assets.add(Cuboid::new(1.0, 1.0, 1.0).into()),
-            material: assets.add(Color::srgb_u8(124, 144, 255).into()),
-        }
-    }
-}
-
-/// Observer which automatically inserts block visuals (mesh and
-/// material) when an entity has the `Block` component added to it.
-fn insert_block_visuals(
-    add: On<Add, Block>,
-    mut commands: Commands,
-    block_assets: Res<BlockAssets>,
-) {
-    commands.entity(add.entity).insert((
-        Mesh3d(block_assets.mesh.clone()),
-        MeshMaterial3d(block_assets.material.clone()),
-    ));
-}

client/src/camera.rs

@@ -1,8 +1,7 @@
 use std::f32::consts::TAU;
 
-use bevy::prelude::*;
-
 use bevy::input::mouse::AccumulatedMouseMotion;
+use bevy::prelude::*;
 use bevy::window::{CursorGrabMode, CursorOptions};
 
 pub fn cursor_grab(
@@ -158,11 +157,9 @@ pub fn noclip_controller(
         if key_input.pressed(noclip.key_back   ) { movement.z -= 1.0; }
         if key_input.pressed(noclip.key_right  ) { movement.x += 1.0; }
         if key_input.pressed(noclip.key_left   ) { movement.x -= 1.0; }
-        movement = movement.clamp_length_max(1.0);
+        if key_input.pressed(noclip.key_up     ) { movement.y += 1.0; }
-        // Movement along the Y (up/down) axis shouldn't be clamped.
+        if key_input.pressed(noclip.key_down   ) { movement.y -= 1.0; }
-        if key_input.pressed(noclip.key_up  ) { movement.y += 1.0; }
+        movement.clamp_length_max(1.0) * noclip.speed
-        if key_input.pressed(noclip.key_down) { movement.y -= 1.0; }
-        movement * noclip.speed
     };
 
     if movement != Vec3::ZERO {

client/src/loading.rs

@@ -1,20 +0,0 @@
-use bevy::prelude::*;
-
-use common::asset_loading::ResourceHandles;
-
-use crate::Screen;
-
-pub fn plugin(app: &mut App) {
-    app.add_systems(
-        Update,
-        enter_gameplay_screen.run_if(in_state(Screen::Loading).and(all_assets_loaded)),
-    );
-}
-
-fn enter_gameplay_screen(mut next_screen: ResMut<NextState<Screen>>) {
-    next_screen.set(Screen::Gameplay);
-}
-
-fn all_assets_loaded(resource_handles: Res<ResourceHandles>) -> bool {
-    resource_handles.is_all_done()
-}

client/src/main.rs

@@ -1,95 +1,70 @@
 use bevy::prelude::*;
-use common::prelude::network::*;
+use common::network::*;
-use common::prelude::*;
 
-use bevy::asset::AssetMetaCheck;
 use bevy::window::WindowResolution;
 use lightyear::prelude::server::Started;
 
 mod args;
-mod block_assets;
+mod block;
 mod camera;
-mod loading;
 mod placement;
 
 use args::*;
+use block::*;
 use camera::*;
 use placement::*;
 
-#[derive(States, Clone, Copy, PartialEq, Eq, Hash, Debug)]
+#[rustfmt::skip]
-pub enum Screen {
-    Loading,
-    Gameplay,
-}
-
 fn main() -> Result {
+    let cli = Args::parse();
     let mut app = App::new();
 
-    app.add_plugins(
+    app.add_plugins(DefaultPlugins.set(WindowPlugin {
-        DefaultPlugins
+        primary_window: Some(Window {
-            .set(WindowPlugin {
+            title: "bevy-bloxel-classic".into(),
-                primary_window: Some(Window {
+            // Steam Deck: DPI appears pretty high, causing everything to be scaled up.
-                    title: "bevy-bloxel-classic".into(),
+            //             Setting `scale_factor_override` prevents this from happening.
-                    // Steam Deck: DPI appears pretty high, causing everything to be scaled up.
+            resolution: WindowResolution::new(1280, 720).with_scale_factor_override(1.0),
-                    //             Setting `scale_factor_override` prevents this from happening.
+            // WEB: Fit canvas to parent element, so `Window` resizes automatically.
-                    resolution: WindowResolution::new(1280, 720).with_scale_factor_override(1.0),
+            fit_canvas_to_parent: true,
-                    // WEB: Fit canvas to parent element, so `Window` resizes automatically.
+            // WEB: Don't override default event handling like browser hotkeys while focused.
-                    fit_canvas_to_parent: true,
+            prevent_default_event_handling: false,
-                    // WEB: Don't override default event handling like browser hotkeys while focused.
+            ..default()
-                    prevent_default_event_handling: false,
+        }),
-                    ..default()
+        ..default()
-                }),
+    }));
-                ..default()
+
-            })
+    // Fixes issue on web where the cursor isn't ungrabbed properly.
-            .set(AssetPlugin {
+    app.add_plugins(bevy_fix_cursor_unlock_web::FixPointerUnlockPlugin);
-                // WEB: Don't check for `.meta` files since we don't use them.
+
-                meta_check: AssetMetaCheck::Never,
+    app.add_plugins(common::network::ServerPlugin);
-                ..default()
+    app.add_plugins(common::network::ClientPlugin);
-            }),
-    );
-
-    app.add_plugins((
-        bevy_fix_cursor_unlock_web::FixPointerUnlockPlugin,
-        ServerPlugin,
-        ClientPlugin,
-        common::asset_loading::plugin,
-        block_assets::plugin,
-        loading::plugin,
-    ));
 
-    app.insert_resource(Args::parse());
+    app.add_systems(Startup, setup_crosshair);
-    app.insert_state(Screen::Loading);
+    app.add_systems(Startup, setup_blocks);
-
+    app.add_systems(Startup, setup_scene.after(setup_blocks));
-    app.add_systems(
+
-        OnEnter(Screen::Gameplay),
+    app.add_systems(Update, cursor_grab);
-        (setup_crosshair, setup_scene, start_server_or_connect),
+    app.add_systems(Update, update_crosshair_visibility.after(cursor_grab));
-    );
+    app.add_systems(Update, camera_look.after(cursor_grab).run_if(is_cursor_grabbed));
-
+    app.add_systems(Update, noclip_controller.after(camera_look).run_if(is_cursor_grabbed));
-    // TODO: Create and configure `SystemSet`s for gameplay, input, etc.
-    app.add_systems(
-        Update,
-        (
-            cursor_grab,
-            update_crosshair_visibility.after(cursor_grab),
-            camera_look.after(cursor_grab).run_if(is_cursor_grabbed),
-            noclip_controller
-                .after(camera_look)
-                .run_if(is_cursor_grabbed),
-        )
-            .run_if(in_state(Screen::Gameplay)),
-    );
 
     // `place_break_blocks` requires the camera's `GlobalTransform`.
     // For a most up-to-date value, run it after that's been updated.
-    app.add_systems(
+    app.add_systems(PostUpdate, place_break_blocks.after(TransformSystems::Propagate));
-        PostUpdate,
+
-        place_break_blocks
-            .after(TransformSystems::Propagate)
-            .run_if(in_state(Screen::Gameplay).and(is_cursor_grabbed)),
-    );
-
-    // TODO: Move this to a more general world generation module.
     app.add_observer(spawn_initial_blocks);
+    app.add_observer(add_block_visuals);
+
+    let mut commands = app.world_mut().commands();
+    match cli.mode.unwrap_or_default() {
+        Mode::Local => commands.queue(StartLocalServerCommand),
+        #[cfg(not(target_family = "wasm"))]
+        Mode::Host { port } => commands.queue(StartWebTransportServerCommand::new(port)),
+        Mode::Connect { address, digest } => commands.queue(ConnectWebTransportCommand::new(&address, digest)?),
+    }
+    // NOTE: When setting up a local server, a host-client is automatically
+    //       connected to it thanks to the `autoconnect_host_client` observer.
 
     app.run();
     Ok(())
@@ -119,23 +94,3 @@ fn spawn_initial_blocks(_event: On<Add, Started>, mut blocks: Blocks) {
         }
     }
 }
-
-fn start_server_or_connect(args: Res<Args>, mut commands: Commands) -> Result {
-    let mode = args.mode.as_ref();
-    let default = Mode::default();
-    match mode.unwrap_or(&default) {
-        Mode::Local => {
-            commands.queue(StartLocalServerCommand);
-        }
-        #[cfg(not(target_family = "wasm"))]
-        Mode::Host { port } => {
-            commands.queue(StartWebTransportServerCommand::new(*port));
-        }
-        Mode::Connect { address, digest } => {
-            commands.queue(ConnectWebTransportCommand::new(&address, digest.clone())?);
-        }
-    }
-    // NOTE: When setting up a local server, a host-client is automatically
-    //       connected to it thanks to the `autoconnect_host_client` observer.
-    Ok(())
-}

client/src/placement.rs

@@ -1,9 +1,7 @@
 use bevy::prelude::*;
-use common::prelude::*;
-
 use bevy::window::{CursorGrabMode, CursorOptions};
 
-// TODO: Use picking system instead of manually raycasting.
+use crate::block::*;
 
 pub fn place_break_blocks(
     mut commands: Commands,

common/src/asset_loading.rs

@@ -1,72 +0,0 @@
-//! A high-level way to load collections of asset handles as resources.
-// Taken from: https://github.com/TheBevyFlock/bevy_new_2d/blob/main/src/asset_tracking.rs
-
-use std::collections::VecDeque;
-
-use bevy::prelude::*;
-
-pub fn plugin(app: &mut App) {
-    app.init_resource::<ResourceHandles>();
-    app.add_systems(PreUpdate, load_resource_assets);
-}
-
-pub trait LoadResource {
-    /// This will load the [`Resource`] as an [`Asset`]. When all of its asset dependencies
-    /// have been loaded, it will be inserted as a resource. This ensures that the resource only
-    /// exists when the assets are ready.
-    fn load_resource<T: Resource + Asset + Clone + FromWorld>(&mut self) -> &mut Self;
-}
-
-impl LoadResource for App {
-    fn load_resource<T: Resource + Asset + Clone + FromWorld>(&mut self) -> &mut Self {
-        self.init_asset::<T>();
-        let world = self.world_mut();
-        let value = T::from_world(world);
-        let assets = world.resource::<AssetServer>();
-        let handle = assets.add(value);
-        let mut handles = world.resource_mut::<ResourceHandles>();
-        handles
-            .waiting
-            .push_back((handle.untyped(), |world, handle| {
-                let assets = world.resource::<Assets<T>>();
-                if let Some(value) = assets.get(handle.id().typed::<T>()) {
-                    world.insert_resource(value.clone());
-                }
-            }));
-        self
-    }
-}
-
-/// A function that inserts a loaded resource.
-type InsertLoadedResource = fn(&mut World, &UntypedHandle);
-
-#[derive(Resource, Default)]
-pub struct ResourceHandles {
-    // Use a queue for waiting assets so they can be cycled through and moved to
-    // `finished` one at a time.
-    waiting: VecDeque<(UntypedHandle, InsertLoadedResource)>,
-    finished: Vec<UntypedHandle>,
-}
-
-impl ResourceHandles {
-    /// Returns true if all requested [`Asset`]s have finished loading and are available as [`Resource`]s.
-    pub fn is_all_done(&self) -> bool {
-        self.waiting.is_empty()
-    }
-}
-
-fn load_resource_assets(world: &mut World) {
-    world.resource_scope(|world, mut resource_handles: Mut<ResourceHandles>| {
-        world.resource_scope(|world, assets: Mut<AssetServer>| {
-            for _ in 0..resource_handles.waiting.len() {
-                let (handle, insert_fn) = resource_handles.waiting.pop_front().unwrap();
-                if assets.is_loaded_with_dependencies(&handle) {
-                    insert_fn(world, &handle);
-                    resource_handles.finished.push(handle);
-                } else {
-                    resource_handles.waiting.push_back((handle, insert_fn));
-                }
-            }
-        });
-    });
-}

common/src/lib.rs

@@ -1,11 +1,2 @@
-pub mod asset_loading;
 pub mod block;
 pub mod network;
-
-// This is mostly just re-exportings things for now, but in the future
-// we might want to limit what gets exposed by the `prelude` module.
-pub mod prelude {
-    pub use super::asset_loading::LoadResource;
-    pub use super::block::*;
-    pub use super::network;
-}

common/src/network/client.rs

@@ -14,6 +14,7 @@ impl Plugin for ClientPlugin {
             app.add_plugins(super::ProtocolPlugin);
         }
 
+        app.add_observer(on_connecting);
         app.add_observer(on_connected);
         app.add_observer(on_disconnected);
 
@@ -34,6 +35,14 @@ fn autoconnect_host_client(event: On<Add, server::Started>, mut commands: Comman
         .trigger(|entity| Connect { entity });
 }
 
+fn on_connecting(event: On<Add, Connecting>, clients: Query<(), With<Client>>) {
+    let client = event.entity;
+    if !clients.contains(client) {
+        return; // Not a client we started. (server-side?)
+    };
+    info!("Client '{client}' connecting ...");
+}
+
 fn on_connected(event: On<Add, Connected>, clients: Query<(), With<Client>>) {
     let client = event.entity;
     if !clients.contains(client) {

common/src/network/server.rs

@@ -32,11 +32,9 @@ pub struct StartLocalServerCommand;
 
 impl Command for StartLocalServerCommand {
     fn apply(self, world: &mut World) {
-        world.spawn((
+        world
-            Server::default(),
+            .spawn((Server::default(), Name::from("Server"), RawServer))
-            Name::from("LocalServer"),
+            .trigger(|entity| Start { entity });
-            Started, // yeah it's started, alright
-        ));
     }
 }
 

common/src/network/server_webtransport.rs

@@ -43,18 +43,18 @@ impl Command for StartWebTransportServerCommand {
     }
 }
 
-pub(super) fn print_certificate_digest(
+pub(crate) fn print_certificate_digest(
-    event: On<Add, WebTransportServerIo>,
+    event: On<Add, Started>,
     servers: Query<&WebTransportServerIo>,
-) {
+) -> Result {
     let server = event.entity;
-
+    let certificate = &servers.get(server)?.certificate;
-    // SAFETY: Event guarantees the component exists on the entity.
+    let certificate_hash = certificate.certificate_chain().as_slice()[0].hash();
-    let certificate = &servers.get(server).unwrap().certificate;
-    let certificate_hash = &certificate.certificate_chain().as_slice()[0].hash();
     let certificate_digest = certificate_hash.to_string().replace(':', "");
 
     info!("== Certificate Digest ==");
     info!("  {certificate_digest}");
     info!("  (Clients use this to securely connect to the server.)");
+
+    Ok(())
 }