feat: enma parsing

wangan_sunrise/Cargo.toml

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+[package]
+name = "wangan_sunrise"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+bevy = { version = "0.13", features = ["wayland"] }

wangan_sunrise/src/assets/game_asset_reader.rs

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+use std::{env, fs::File, path::Path};
+
+use bevy::{
+    asset::io::{AssetReader, AssetReaderError, Reader},
+    utils::BoxedFuture,
+};
+
+struct GameAssetReader(Box<dyn AssetReader>);
+
+fn get_game_dir() -> String {
+    env::var("GAME_DIR").unwrap_or(".".to_string())
+}
+
+impl AssetReader for GameAssetReader {
+    fn read<'a>(
+        &'a self,
+        path: &'a Path,
+    ) -> BoxedFuture<'a, Result<Box<Reader<'a>>, AssetReaderError>> {
+        let full_path = path.join(get_game_dir());
+        self.0.read(&full_path)
+    }
+
+    fn read_meta<'a>(
+        &'a self,
+        path: &'a Path,
+    ) -> BoxedFuture<'a, Result<Box<Reader<'a>>, AssetReaderError>> {
+        todo!()
+    }
+
+    fn read_directory<'a>(
+        &'a self,
+        path: &'a Path,
+    ) -> BoxedFuture<'a, Result<Box<bevy::asset::io::PathStream>, AssetReaderError>> {
+        todo!()
+    }
+
+    fn is_directory<'a>(
+        &'a self,
+        path: &'a Path,
+    ) -> BoxedFuture<'a, Result<bool, AssetReaderError>> {
+        todo!()
+    }
+}

wangan_sunrise/src/assets/mod.rs

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+pub mod game_asset_reader;

wangan_sunrise/src/main.rs

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+mod assets;
+
+use bevy::{app::App, asset::io::AssetReader, DefaultPlugins};
+
+fn main() {
+    App::new().add_plugins(DefaultPlugins).run();
+}