feat: embed atlas.json via phf instead of runtime parsing

src/asset.rs

@@ -12,8 +12,6 @@ pub enum Asset {
     Wav3,
     Wav4,
     Atlas,
-    AtlasJson,
-    // Add more as needed
 }
 
 impl Asset {
@@ -26,7 +24,6 @@ impl Asset {
             Wav3 => "sound/waka/3.ogg",
             Wav4 => "sound/waka/4.ogg",
             Atlas => "atlas.png",
-            AtlasJson => "atlas.json",
         }
     }
 }
@@ -36,6 +33,7 @@ mod imp {
     use crate::error::AssetError;
     use crate::platform::get_platform;
 
+    /// Returns the raw bytes of the given asset.
     pub fn get_asset_bytes(asset: Asset) -> Result<Cow<'static, [u8]>, AssetError> {
         get_platform().get_asset_bytes(asset)
     }

src/game/state.rs

@@ -20,6 +20,8 @@ use crate::{
     },
 };
 
+include!(concat!(env!("OUT_DIR"), "/atlas_data.rs"));
+
 /// The `GameState` struct holds all the essential data for the game.
 ///
 /// This includes the score, map, entities (Pac-Man, ghosts, items),
@@ -68,8 +70,10 @@ impl GameState {
                 GameError::Texture(TextureError::LoadFailed(e.to_string()))
             }
         })?;
-        let atlas_json = get_asset_bytes(Asset::AtlasJson)?;
-        let atlas_mapper: AtlasMapper = serde_json::from_slice(&atlas_json)?;
+
+        let atlas_mapper = AtlasMapper {
+            frames: ATLAS_FRAMES.into_iter().map(|(k, v)| (k.to_string(), *v)).collect(),
+        };
         let atlas = SpriteAtlas::new(atlas_texture, atlas_mapper);
 
         let mut map_tiles = Vec::with_capacity(35);

src/platform/desktop.rs

@@ -72,7 +72,6 @@ impl Platform for DesktopPlatform {
             Asset::Wav3 => Ok(Cow::Borrowed(include_bytes!("../../assets/game/sound/waka/3.ogg"))),
             Asset::Wav4 => Ok(Cow::Borrowed(include_bytes!("../../assets/game/sound/waka/4.ogg"))),
             Asset::Atlas => Ok(Cow::Borrowed(include_bytes!("../../assets/game/atlas.png"))),
-            Asset::AtlasJson => Ok(Cow::Borrowed(include_bytes!("../../assets/game/atlas.json"))),
         }
     }
 }