Use array instead of Vec in UpgradeList

src/upgrade.rs

@@ -41,7 +41,6 @@ impl Plugin for UpgradePlugin {
         app.register_type::<UpgradeEvent>()
             .register_type::<UpgradeSequence>()
             .add_event::<UpgradeEvent>()
-            .init_resource::<UpgradeList>()
             .init_resource::<UpgradeUpdateSystems>()
             .add_systems(
                 OnEnter(AppState::EditorScreen),
@@ -247,23 +246,6 @@ fn run_installed_upgrades(world: &mut World) {
     }
 }
 
-#[derive(Resource, Default)]
-pub struct UpgradeList(pub Vec<Upgrade>);
-
-impl Index<UpgradeKind> for UpgradeList {
-    type Output = Upgrade;
-
-    fn index(&self, index: UpgradeKind) -> &Self::Output {
-        &self.0[index as usize]
-    }
-}
-
-impl IndexMut<UpgradeKind> for UpgradeList {
-    fn index_mut(&mut self, index: UpgradeKind) -> &mut Self::Output {
-        &mut self.0[index as usize]
-    }
-}
-
 #[derive(Resource, Reflect, Default)]
 #[reflect(Resource)]
 pub struct UpgradeSequence {
@@ -391,11 +373,28 @@ macro_rules! generate_upgrade_list {
             $(UpgradeKind::$enumname),+
         ];
 
+        #[derive(Resource)]
+        pub struct UpgradeList(pub [Upgrade; UpgradeKind::COUNT]);
+
+        impl Index<UpgradeKind> for UpgradeList {
+            type Output = Upgrade;
+
+            fn index(&self, index: UpgradeKind) -> &Self::Output {
+                &self.0[index as usize]
+            }
+        }
+
+        impl IndexMut<UpgradeKind> for UpgradeList {
+            fn index_mut(&mut self, index: UpgradeKind) -> &mut Self::Output {
+                &mut self.0[index as usize]
+            }
+        }
+
         /// A system that initializes and inserts the UpgradeList resource.
         fn load_upgrade_list($world: &mut World) {
             use UpgradeKind::*;
 
-            let upgrade_list = UpgradeList(vec![
+            let upgrade_list = UpgradeList([
                 $($upgrade),+
             ]);