Ayyy, got 2d sprites loading! With tweaks!

Now to get it to reload...

assets/martian.tweak.toml

@@ -92,3 +92,24 @@ post_saturation = 1.0
 [display3d.ssao]
 # Options: Off, Low, Medium, High, Ultra
 quality_level = "Off"
+
+###
+# Display 2D tweaks
+###
+[display2d.sprites]
+# Sprite file path inside the `assets` folder
+file = "images/sprites.png"
+# Size of each tile [x,y] (they have to be the same size)
+tile_size = [16, 16]
+columns = 8
+rows = 1
+# The order of each sprite left-to-right, top-to-bottom
+sprite_order = [ "LightTile"
+               , "DarkTile"
+               , "RedQueen"
+               , "RedDrone"
+               , "RedPawn"
+               , "BlueQueen"
+               , "BlueDrone"
+               , "BluePawn"
+               ]

src/display2d.rs

@@ -17,7 +17,12 @@ pub(crate) struct Display2dPlugin;
 impl Plugin for Display2dPlugin {
     fn build(&self, app: &mut App) {
         app.add_systems(Startup, (initialize_camera, set_background))
-            .add_systems(OnEnter(GameState::Loading), load_spritesheet)
+            .add_systems(
+                Update,
+                load_spritesheet
+                    .run_if(on_event::<AssetEvent<Tweakfile>>())
+                    .run_if(in_state(GameState::Loading)),
+            )
             .add_systems(OnExit(GameState::Loading), initialize_board)
             .add_systems(
                 Update,
@@ -65,6 +70,7 @@ pub(crate) struct Display2d;
 struct BackgroundImage;
 
 /// All possible sprites
+/// Necessary because individual components of Piece, Side, and Light/Dark are not homogeneous
 #[derive(Debug, Deserialize, Component, Clone, PartialEq)]
 pub(crate) enum GameSprite {
     RedQueen,
@@ -123,19 +129,23 @@ fn load_spritesheet(
     tweaks: Res<Assets<tweak::Tweakfile>>,
     mut commands: Commands,
 ) {
+    info!("Loading spritesheet");
     let handle: Handle<tweak::Tweakfile> = server.load("martian.tweak.toml");
+    info!("Handle: {:?}", handle);
     let tweak = tweaks.get(&handle).expect("Load tweakfiles");
+    info!("Tweak: {:?}", tweak);
     let atlas = TextureAtlas::from_grid(
         server.load(tweak.display2d.sprites.file.clone()),
         Vec2::new(
-            tweak.display2d.sprites.tile_size.x,
-            tweak.display2d.sprites.tile_size.y,
+            tweak.display2d.sprites.tile_size[0] as f32,
+            tweak.display2d.sprites.tile_size[1] as f32,
         ),
         tweak.display2d.sprites.columns,
         tweak.display2d.sprites.rows,
         None,
         None,
     );
+    info!("Atlas: {:?}", atlas);
     commands.insert_resource(SpriteSheet {
         handle: texture_atlases.add(atlas),
     });
@@ -414,7 +424,7 @@ pub(crate) mod tweaks {
         #[serde(default)]
         pub file: String,
         #[serde(default)]
-        pub tile_size: Vec2,
+        pub tile_size: [u8; 2],
         #[serde(default)]
         pub columns: usize,
         #[serde(default)]