bevy_fallible

一个简单的插件，用于将可失败系统安装到bevy

API

库提供两个主要组件：#[fallible_system] 属性宏和 SystemErrorEvent 结构体。本质上，每个 fallible_system 如果产生错误，都会生成一个 SystemErrorEvent 事件，这就是全部。

为了简化使用，有一个 fallibleSystemPlugin 来注册接收错误事件所需的所有内容。

示例

// Some system that might fail
#[fallible_system]
fn system(asset_server: Res<AssetServer>) -> anyhow::Result<()> {
    let handle: Handle<Texture> = asset_server.load("texture")?;
}

// Let's make another system to read every event about other
// systems failures and report !
#[derive(Default)]
struct ReportSystemState{ reader: EventReader<SystemErrorEvent> }
fn report_system(mut state: Local<ReportSystemState>, mut events: ResMut<Events<SystemErrorEvent>>) {
    for event in state.reader.iter(&mut events) {
        println!("Error in {}: {}", event.system_name, event.error); 
    }
}

fn main() {
    App::build()
        .add_plugin(fallibleSystemPlugin)
        .add_startup_system(system.system())
        .add_system(report_system.system())
        .run();
}