From 0748cbd5d487084648fdc439963e73cdf2afc6c0 Mon Sep 17 00:00:00 2001
From: Greg Shuflin <greg@everydayimshuflin.com>
Date: Wed, 8 Jan 2025 02:44:23 -0800
Subject: [PATCH] Time resource

---
 src/main.rs | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/src/main.rs b/src/main.rs
index 84b2ee1..e1fe3d3 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -6,6 +6,9 @@ struct Person;
 #[derive(Component)]
 struct Name(String);
 
+#[derive(Resource)]
+struct GreetTimer(Timer);
+
 fn add_people(mut commands: Commands) {
     commands.spawn((Person, Name("Lars Larson".to_string())));
     commands.spawn((Person, Name("Cedric Fagbottom".to_string())));
@@ -18,9 +21,11 @@ fn gamarjoba() {
     println!("Gamarjoba, munde!");
 }
 
-fn greet_people(query: Query<&Name, With<Person>>) {
-    for name in &query {
-        println!("'sup {}", name.0);
+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!("'sup {}", name.0);
+        }
     }
 }
 
@@ -36,8 +41,10 @@ fn update_people(mut query: Query<&mut Name, With<Person>>) {
 
 fn main() {
     App::new()
+        .insert_resource(GreetTimer(Timer::from_seconds(2.0, TimerMode::Repeating)))
         .add_plugins(DefaultPlugins)
         .add_systems(Startup, add_people)
-        .add_systems(Update, (gamarjoba, (update_people, greet_people).chain()))
+        //.add_systems(Update, (gamarjoba, (update_people, greet_people).chain()))
+        .add_systems(Update, (update_people, greet_people).chain())
         .run();
 }