save on exit

src/main.rs

@@ -3,8 +3,8 @@
 
 mod utils;
 
-use bevy::prelude::*;
-use bevy::window::WindowResolution;
+use bevy::window::{ClosingWindow, WindowResolution};
+use bevy::{prelude::*, window::WindowCloseRequested};
 use helpers::grid::{Flag, GridPlugin, Revealed, Tile, TileClickEvent, TileOffset, TileType};
 use serde::{Deserialize, Serialize};
 
@@ -249,14 +249,13 @@ fn load_game(mut commands: Commands, asset_server: Res<AssetServer>) {
     });
 }
 
-fn save_and_exit(
-    input: Res<ButtonInput<KeyCode>>,
+fn save_on_exit(
     world: &World,
     type_registry: Res<AppTypeRegistry>,
+    mut close_request: EventReader<WindowCloseRequested>,
 ) {
-    if !input.just_pressed(KeyCode::Escape) {
-        return;
-    }
+    for _ in close_request.read() {
+        println!("Saving");
 
         let type_registry = type_registry.read();
 
@@ -294,6 +293,7 @@ fn save_and_exit(
             eprintln!("Unable to write save file: {:?}", e);
         }
     }
+}
 
 fn main() {
     // use imageproc::drawing::Canvas;
@@ -338,7 +338,8 @@ fn main() {
                     resolution: WindowResolution::new(1280.0, 720.0),
                     ..Default::default()
                 }),
-                ..default()
+                exit_condition: bevy::window::ExitCondition::OnAllClosed,
+                close_when_requested: true,
             }),
             // bevy_inspector_egui::quick::WorldInspectorPlugin::new(),
         ))
@@ -349,6 +350,6 @@ fn main() {
         .init_resource::<FontHandle>()
         .add_plugins(GridPlugin)
         .add_systems(Startup, (load_game, setup_camera))
-        .add_systems(Update, (tile_clicked, save_and_exit))
+        .add_systems(Update, (tile_clicked, save_on_exit))
         .run();
 }