ecson 0.2.2

ECS-driven stateful bidirectional server framework for Rust
Documentation 
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use ecson::prelude::*;

fn broadcast_system(
    mut ev_received: MessageReader<MessageReceived>,
    mut ev_send: MessageWriter<SendMessage>,
    client_query: Query<Entity, With<ClientId>>,
) {
    for msg in ev_received.read() {
        // テキストメッセージのみを処理対象とする
        let NetworkPayload::Text(text) = &msg.payload else {
            continue;
        };

        // 「誰が発言したか」を分かりやすくフォーマット
        let broadcast_text = format!("User {}: {}", msg.client_id, text);
        let payload = NetworkPayload::Text(broadcast_text);

        // クエリで取得した全クライアント（エンティティ）に対してSendMessageイベントを発行
        for target_entity in client_query.iter() {
            ev_send.write(SendMessage {
                target: target_entity,
                payload: payload.clone(),
            });
        }
    }
}

fn main() {
    EcsonApp::new()
        .add_plugins((
            EcsonWebSocketPlugin::new("127.0.0.1:8080"),
            EcsonWebTransportDevPlugin::new("127.0.0.1:4433"),
        ))
        .add_systems(Update, broadcast_system)
        .run();
}