Setup basic resources

src/main.rs

@@ -1,12 +1,21 @@
 mod components;
+mod plugins;
+mod resources;
 mod systems;
 
-use bevy::prelude::*;
-use systems::*;
+mod prelude {
+    pub use crate::components::*;
+    pub use crate::plugins::*;
+    pub use crate::resources::*;
+    pub use crate::systems::*;
+    pub use bevy::prelude::*;
+}
+
+use prelude::*;
 
 fn main() {
     App::build()
-        .add_startup_system(add_player.system())
-        .add_system(greet_player.system())
+        .add_plugins(DefaultPlugins)
+        .add_plugin(PlayerPlugin)
         .run();
 }

src/plugins/mod.rs

@@ -0,0 +1,11 @@
+use crate::prelude::*;
+
+pub struct PlayerPlugin;
+
+impl Plugin for PlayerPlugin {
+    fn build(&self, app: &mut AppBuilder) {
+        app.insert_resource(GreetTimer(Timer::from_seconds(2.0, true)))
+            .add_startup_system(add_player.system())
+            .add_system(greet_player.system());
+    }
+}

src/resources/mod.rs

@@ -0,0 +1,3 @@
+use crate::prelude::*;
+
+pub struct GreetTimer(pub Timer);

src/systems/mod.rs

@@ -1,5 +1,4 @@
-use crate::components::{Name, Player};
-use bevy::prelude::*;
+use crate::prelude::*;
 
 pub fn add_player(mut commands: Commands) {
     commands
@@ -8,8 +7,14 @@ pub fn add_player(mut commands: Commands) {
         .insert(Name("Player 1".to_string()));
 }
 
-pub fn greet_player(query: Query<&Name, With<Player>>) {
-    for name in query.iter() {
-        println!("Hello, {}!", name.0);
+pub fn greet_player(
+    query: Query<&Name, With<Player>>,
+    time: Res<Time>,
+    mut timer: ResMut<GreetTimer>,
+) {
+    if timer.0.tick(time.delta()).just_finished() {
+        for name in query.iter() {
+            println!("Hello, {}!", name.0);
+        }
     }
 }