From 9a262fcffc2022e330785c6e0b1b6d1159bca01a Mon Sep 17 00:00:00 2001
From: Robert Garrett <robertgarrett404@gmail.com>
Date: Mon, 11 Aug 2025 23:33:56 -0500
Subject: [PATCH] Move `Lifetime` component to machinery module

---
 src/lib.rs       | 15 ++-------------
 src/machinery.rs | 16 ++++++++++++++++
 src/objects.rs   |  3 ++-
 3 files changed, 20 insertions(+), 14 deletions(-)

diff --git a/src/lib.rs b/src/lib.rs
index 6880f3c..9135198 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -22,6 +22,7 @@ use bevy_rapier2d::{
     prelude::*,
     render::RapierDebugRenderPlugin,
 };
+use machinery::Lifetime;
 use resources::{GameAssets, Lives, Score, WorldSize};
 
 pub struct AsteroidPlugin;
@@ -64,7 +65,7 @@ impl Plugin for AsteroidPlugin {
                 physics::collision_listener,
                 // TODO: Remove debug printing
                 debug_collision_event_printer,
-                tick_lifetimes,
+                machinery::tick_lifetimes,
             )
                 .run_if(in_state(GameState::Playing)),
         )
@@ -98,9 +99,6 @@ pub enum GameState {
     GameOver,    // Game has ended. Present game over dialogue and await user restart
 }
 
-#[derive(Component)]
-struct Lifetime(Timer);
-
 fn spawn_camera(mut commands: Commands) {
     commands.spawn(Camera2d);
 }
@@ -196,12 +194,3 @@ fn spawn_ui(mut commands: Commands, score: Res<Score>, lives: Res<Lives>) {
         TextFont::from_font_size(25.0),
     ));
 }
-
-fn tick_lifetimes(mut commands: Commands, time: Res<Time>, query: Query<(Entity, &mut Lifetime)>) {
-    for (e, mut life) in query {
-        life.0.tick(time.delta());
-        if life.0.just_finished() {
-            commands.entity(e).despawn();
-        }
-    }
-}
diff --git a/src/machinery.rs b/src/machinery.rs
index 57dbd00..6fab66f 100644
--- a/src/machinery.rs
+++ b/src/machinery.rs
@@ -76,3 +76,19 @@ pub fn tick_asteroid_manager(
         events.write(SpawnAsteroid { pos, vel, size });
     }
 }
+
+#[derive(Component)]
+pub struct Lifetime(pub Timer);
+
+pub fn tick_lifetimes(
+    mut commands: Commands,
+    time: Res<Time>,
+    query: Query<(Entity, &mut Lifetime)>,
+) {
+    for (e, mut life) in query {
+        life.0.tick(time.delta());
+        if life.0.just_finished() {
+            commands.entity(e).despawn();
+        }
+    }
+}
diff --git a/src/objects.rs b/src/objects.rs
index 5f4b1df..8875539 100644
--- a/src/objects.rs
+++ b/src/objects.rs
@@ -21,9 +21,10 @@ use bevy::{
 use bevy_rapier2d::prelude::{ActiveCollisionTypes, ActiveEvents, Collider, Sensor};
 
 use crate::{
-    AngularVelocity, GameAssets, GameState, Lifetime, Lives,
+    AngularVelocity, GameAssets, GameState, Lives,
     config::ASTEROID_LIFETIME,
     events::{AsteroidDestroy, BulletDestroy, ShipDestroy, SpawnAsteroid},
+    machinery::Lifetime,
     physics::{Velocity, Wrapping},
 };