The trait bound GetAssetServer is not satisfied for load_embedded_assets! macro.

[vanleefxp]

When I want to embed all my assets into my bevy program so that I can pack my program as a single executable, I started using the embedded_assets! macro to embed assets.

I want to use my embedded assets in the very same binary crate as I defined them. However When I tried to load these embedded assets:

fn setup(mut commands: Commands, asset_server: Res<AssetServer>) {
    // ...
    load_embedded_asset!(&asset_server, "image/player/idle.png");
    // ...
}

I got an error:

the trait bound `bevy::bevy_ecs::change_detection::Res<'_, bevy::bevy_asset::AssetServer>: GetAssetServer` is not satisfied
the trait `GetAssetServer` is not implemented for `bevy::bevy_ecs::change_detection::Res<'_, bevy::bevy_asset::AssetServer>`

What should I do?

[vanleefxp]

I've found that App has an implementation of GetAssetsServer, so I tried to load embeded assets in the main function where the App was created. However the program panicked.

thread 'main' (32164) panicked at D:\Program Files\Rust\.cargo\registry\src\rsproxy.cn-e3de039b2554c837\bevy_asset-0.18.1\src\io\embedded\mod.rs:155:14:
Requested resource bevy_asset::server::AssetServer does not exist in the `World`.
                Did you forget to add it using `app.insert_resource` / `app.init_resource`?
                Resources are also implicitly added via `app.add_message`,
                and can be added by plugins.
stack backtrace:
   0: std::panicking::panic_handler
             at /rustc/20de910db49d3476ccf49ea79a4b22e2b5dface0/library\std\src\panicking.rs:689
   1: core::panicking::panic_fmt
             at /rustc/20de910db49d3476ccf49ea79a4b22e2b5dface0/library\core\src\panicking.rs:80
   2: bevy_ecs::world::World::resource<bevy_asset::server::AssetServer>
             at D:\Program Files\Rust\.cargo\registry\src\rsproxy.cn-e3de039b2554c837\bevy_ecs-0.18.1\src\world\mod.rs:2087
   3: bevy_asset::io::embedded::impl$2::get_asset_server
             at D:\Program Files\Rust\.cargo\registry\src\rsproxy.cn-e3de039b2554c837\bevy_asset-0.18.1\src\io\embedded\mod.rs:155
   4: bevy_asset::io::embedded::impl$1::get_asset_server
             at D:\Program Files\Rust\.cargo\registry\src\rsproxy.cn-e3de039b2554c837\bevy_asset-0.18.1\src\io\embedded\mod.rs:149
   5: staircase_escape::main
             at .\src\main.rs:47
   6: core::ops::function::FnOnce::call_once<void (*)(),tuple$<> >
             at D:\Program Files\Rust\.rustup\toolchains\nightly-x86_64-pc-windows-msvc\lib\rustlib\src\rust\library\core\src\ops\function.rs:250
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
error: process didn't exit successfully: `target\debug\staircase-escape.exe` (exit code: 101)

It seems that AssetsServer has not yet been created at the moment the App object was created.

I've also tired to pass App as an argument of system functions. But It seems that App cannot be an argument of a valid system function.

[vanleefxp]

So how on earth should I load embedded assets? I am totally confused.

[vanleefxp]

I am using the latest version i.e. 0.18.1 of Bevy