physnet: initial project scaffold (#107)

Cargo.toml

@@ -2,6 +2,8 @@
 resolver = "2"
 members = [
 	"apps/legacy_web/backend",
+	"apps/networked_physics_demo/client",
+	"apps/networked_physics_demo/server",
 	"apps/legacy_web/frontend",
 	"apps/rvid/client",
 	"apps/rvid/server",

apps/networked_physics_demo/README.md

@@ -0,0 +1,15 @@
+# Networked Physics in VR
+
+An implementation of [this excellent GafferOnGames article][article] about
+writing netcode for a distributed physics simulation in VR.
+
+Unlike the original article, this demo will be utilizing WebTransport for its
+networking and will not be as focused on hyper-optimized message payload sizes
+like in the original article.
+
+
+## Project Status
+
+WIP / active development.
+
+[article]: https://gafferongames.com/post/networked_physics_in_virtual_reality/

apps/networked_physics_demo/client/Cargo.toml

@@ -0,0 +1,18 @@
+[package]
+name = "physnet_client"
+version.workspace = true
+license.workspace = true
+repository.workspace = true
+edition.workspace = true
+rust-version.workspace = true
+description = "A demo for Networked Physics in VR"
+publish = false
+
+[lib]
+crate-type = ["cdylib", "rlib"]
+
+[dependencies]
+bevy.workspace = true
+bevy_oxr.workspace = true
+color-eyre.workspace = true
+openxr.workspace = true

apps/networked_physics_demo/client/src/lib.rs

@@ -0,0 +1,77 @@
+use bevy::{
+	app::{App, Startup},
+	asset::Assets,
+	core_pipeline::core_3d::Camera3dBundle,
+	diagnostic::{FrameTimeDiagnosticsPlugin, LogDiagnosticsPlugin},
+	ecs::system::{Commands, ResMut},
+	log::info,
+	math::{
+		primitives::{Cuboid, Plane3d},
+		Vec3,
+	},
+	pbr::{PbrBundle, PointLight, PointLightBundle, StandardMaterial},
+	prelude::{bevy_main, default},
+	render::{
+		color::Color,
+		mesh::{Mesh, Meshable},
+	},
+	transform::components::Transform,
+};
+use bevy_oxr::DefaultXrPlugins;
+
+const APP_NAME: &str = env!("CARGO_PKG_NAME");
+
+#[bevy_main]
+pub fn main() {
+	color_eyre::install().unwrap();
+
+	info!("Running {}", APP_NAME);
+	App::new()
+		.add_plugins(DefaultXrPlugins {
+			app_info: bevy_oxr::graphics::XrAppInfo {
+				name: env!("CARGO_PKG_NAME").to_string(),
+			},
+			..default()
+		})
+		.add_plugins(LogDiagnosticsPlugin::default())
+		.add_plugins(FrameTimeDiagnosticsPlugin)
+		.add_systems(Startup, setup)
+		// .add_systems(Update, hands)
+		.run();
+}
+
+// set up a simple 3D scene
+fn setup(
+	mut commands: Commands,
+	mut meshes: ResMut<Assets<Mesh>>,
+	mut materials: ResMut<Assets<StandardMaterial>>,
+) {
+	// plane
+	commands.spawn(PbrBundle {
+		mesh: meshes.add(Plane3d::new(Vec3::Y).mesh().size(5.0, 5.0)),
+		material: materials.add(StandardMaterial::from(Color::rgb(0.3, 0.5, 0.3))),
+		..default()
+	});
+	// cube
+	commands.spawn(PbrBundle {
+		mesh: meshes.add(Mesh::from(Cuboid::from_size(Vec3::splat(0.1)))),
+		material: materials.add(StandardMaterial::from(Color::rgb(0.8, 0.7, 0.6))),
+		transform: Transform::from_xyz(0.0, 0.5, 0.0),
+		..default()
+	});
+	// light
+	commands.spawn(PointLightBundle {
+		point_light: PointLight {
+			intensity: 1500.0,
+			shadows_enabled: true,
+			..default()
+		},
+		transform: Transform::from_xyz(4.0, 8.0, 4.0),
+		..default()
+	});
+	// camera
+	commands.spawn((Camera3dBundle {
+		transform: Transform::from_xyz(-2.0, 2.5, 5.0).looking_at(Vec3::ZERO, Vec3::Y),
+		..default()
+	},));
+}

apps/networked_physics_demo/client/src/main.rs

@@ -0,0 +1,3 @@
+fn main() {
+	physnet_client::main()
+}

apps/networked_physics_demo/server/Cargo.toml

@@ -0,0 +1,11 @@
+[package]
+name = "physnet_server"
+version.workspace = true
+license.workspace = true
+repository.workspace = true
+edition.workspace = true
+rust-version.workspace = true
+description = "A demo for Networked Physics in VR"
+publish = false
+
+[dependencies]

apps/networked_physics_demo/server/src/lib.rs

@@ -0,0 +1 @@
+