Camera controller, basic test scene

hello-world/src/main.rs

@@ -1,14 +1,41 @@
 use bevy::prelude::*;
 
+mod orbit_cam;
 mod people;
+mod test_scene;
+
+use orbit_cam::{OrbitCam, OrbitCamPlugin};
+use test_scene::TestScenePlugin;
 
 fn main() {
+    #[cfg(target_arch = "wasm32")]
+    console_error_panic_hook::set_once();
+
     App::new()
-        .add_plugins((DefaultPlugins, people::Plugin))
+        .add_plugins((
+            DefaultPlugins,
+            people::Plugin,
+            OrbitCamPlugin,
+            TestScenePlugin,
+        ))
         .add_systems(Startup, hello_world)
+        .add_systems(Update, draw_world_axes.after(orbit_cam::pan_orbit_camera))
         .run();
 }
 
 fn hello_world() {
-    println!("Hello, world!");
+    info!("Hello, world!");
+}
+
+fn draw_world_axes(mut gizmos: Gizmos, q: Query<&OrbitCam>) {
+    let &OrbitCam { focus, radius, .. } = q.single();
+
+    let mut draw_axis = |direction: Vec3, color: Color| {
+        let end = focus + direction * radius / 15.;
+        gizmos.line(focus, end, color);
+    };
+
+    draw_axis(Vec3::X, Color::RED);
+    draw_axis(Vec3::Y, Color::GREEN);
+    draw_axis(Vec3::Z, Color::BLUE);
 }