Initial.

src/main.rs

@@ -0,0 +1,87 @@
+use std::sync::Mutex;
+
+use bevy::prelude::*;
+use include_dir::{include_dir, Dir};
+use mlua::Lua;
+
+static DATA_DIR: Dir<'_> = include_dir!("data");
+
+fn main() {
+    App::new()
+        .add_plugins(DefaultPlugins)
+        .add_plugins(DuckPlugin)
+        .add_systems(Startup, setup)
+        .run();
+}
+
+trait Instance {
+    fn new() -> Self {
+        Self {}
+    }
+    fn destroy() {
+        
+    }
+    fn clone() {
+        
+    }
+}
+
+struct Part {
+    
+}
+
+impl Instance for Part {
+
+}
+
+struct DuckPlugin;
+
+impl Plugin for DuckPlugin {
+    fn build(&self, app: &mut App) {
+        commands.spawn()
+    }
+}
+
+// A scripting context, for threading and sandboxing scripts
+#[derive(Component)]
+struct DuckScriptContext {
+    lua: Lua
+}
+
+// 
+#[derive(Component)]
+struct DuckScript {
+    context: Entity
+}
+
+fn setup(
+    mut commands: Commands,
+    mut meshes: ResMut<Assets<Mesh>>,
+    mut materials: ResMut<Assets<StandardMaterial>>,
+) {
+    // circular base
+    commands.spawn((
+        Mesh3d(meshes.add(Circle::new(4.0))),
+        MeshMaterial3d(materials.add(Color::WHITE)),
+        Transform::from_rotation(Quat::from_rotation_x(-std::f32::consts::FRAC_PI_2)),
+    ));
+    // cube
+    commands.spawn((
+        Mesh3d(meshes.add(Cuboid::new(1.0, 1.0, 1.0))),
+        MeshMaterial3d(materials.add(Color::srgb_u8(124, 144, 255))),
+        Transform::from_xyz(0.0, 0.5, 0.0),
+    ));
+    // light
+    commands.spawn((
+        PointLight {
+            shadows_enabled: true,
+            ..default()
+        },
+        Transform::from_xyz(4.0, 8.0, 4.0),
+    ));
+    // camera
+    commands.spawn((
+        Camera3d::default(),
+        Transform::from_xyz(-2.5, 4.5, 9.0).looking_at(Vec3::ZERO, Vec3::Y),
+    ));
+}