circle time

src/main.rs

@@ -1,38 +1,29 @@
-use bevy::prelude::*;
+use bevy::{
+    prelude::*,
+    sprite::{MaterialMesh2dBundle, Mesh2dHandle},
+};
 
 fn main() {
-    App::new().add_plugins((DefaultPlugins, HelloPlugin)).run();
+    App::new()
+        .add_plugins(DefaultPlugins)
+        .add_systems(Startup, setup)
+        .run();
 }
 
-#[derive(Component)]
-struct Person;
+fn setup(
+    mut commands: Commands,
+    mut meshes: ResMut<Assets<Mesh>>,
+    mut materials: ResMut<Assets<ColorMaterial>>,
+) {
+    commands.spawn(Camera2dBundle::default());
 
-#[derive(Component)]
-struct Name(String);
+    let circle_mesh = Mesh2dHandle(meshes.add(Circle { radius: 50. }));
+    let color = Color::hsl(75., 0.95, 0.7);
 
-fn add_people(mut commands: Commands) {
-    commands.spawn((Person, Name("Elaina Proctor".to_string())));
-    commands.spawn((Person, Name("Renzo Hume".to_string())));
-    commands.spawn((Person, Name("Zayna Nieves".to_string())));
-}
-
-#[derive(Resource)]
-struct GreetTimer(Timer);
-
-fn greet_people(time: Res<Time>, mut timer: ResMut<GreetTimer>, query: Query<&Name, With<Person>>) {
-    if timer.0.tick(time.delta()).just_finished() {
-        for name in &query {
-            println!("hello {}!", name.0);
-        }
-    }
-}
-
-pub struct HelloPlugin;
-
-impl Plugin for HelloPlugin {
-    fn build(&self, app: &mut App) {
-        app.insert_resource(GreetTimer(Timer::from_seconds(2.0, TimerMode::Repeating)))
-            .add_systems(Startup, add_people)
-            .add_systems(Update, greet_people);
-    }
+    commands.spawn(MaterialMesh2dBundle {
+        mesh: circle_mesh,
+        material: materials.add(color),
+        transform: Transform::from_xyz(0., 0., 0.),
+        ..default()
+    });
 }