bevy/examples/wasm/assets_wasm.rs
François b724a0f586 Down with the system! (#2496)
# Objective

- Remove all the `.system()` possible.
- Check for remaining missing cases.

## Solution

- Remove all `.system()`, fix compile errors
- 32 calls to `.system()` remains, mostly internals, the few others should be removed after #2446
2021-07-27 23:42:36 +00:00

68 lines
1.6 KiB
Rust

use bevy::{
asset::{AssetLoader, AssetServerSettings, LoadContext, LoadedAsset},
prelude::*,
reflect::TypeUuid,
utils::BoxedFuture,
};
fn main() {
App::new()
.insert_resource(AssetServerSettings {
asset_folder: "/".to_string(),
})
.add_plugins(DefaultPlugins)
.add_asset::<RustSourceCode>()
.init_asset_loader::<RustSourceCodeLoader>()
.add_startup_system(load_asset)
.add_system(print_asset)
.run();
}
struct State {
handle: Handle<RustSourceCode>,
printed: bool,
}
fn load_asset(mut commands: Commands, asset_server: Res<AssetServer>) {
commands.insert_resource(State {
handle: asset_server.load("assets_wasm.rs"),
printed: false,
});
}
fn print_asset(mut state: ResMut<State>, rust_sources: Res<Assets<RustSourceCode>>) {
if state.printed {
return;
}
if let Some(code) = rust_sources.get(&state.handle) {
info!("code: {}", code.0);
state.printed = true;
}
}
#[derive(Debug, TypeUuid)]
#[uuid = "1c3445ab-97d3-449c-ab35-16ba30e4c29d"]
pub struct RustSourceCode(pub String);
#[derive(Default)]
pub struct RustSourceCodeLoader;
impl AssetLoader for RustSourceCodeLoader {
fn load<'a>(
&'a self,
bytes: &'a [u8],
load_context: &'a mut LoadContext,
) -> BoxedFuture<'a, Result<(), anyhow::Error>> {
Box::pin(async move {
load_context.set_default_asset(LoadedAsset::new(RustSourceCode(String::from_utf8(
bytes.into(),
)?)));
Ok(())
})
}
fn extensions(&self) -> &[&str] {
&["rs"]
}
}