init

src/lib_server/net.rs

@@ -0,0 +1,55 @@
+use bevy::{
+	prelude::*,
+	tasks::{TaskPool, TaskPoolBuilder},
+};
+use bevy_eventwork::{
+	tcp::{NetworkSettings, TcpProvider},
+	EventworkPlugin, EventworkRuntime, Network, NetworkEvent,
+};
+
+use crate::lib_server::player::{remove_player, spawn_player};
+
+use super::{display::RenderUpdate, player::Player};
+
+pub struct NetPlugin;
+
+impl Plugin for NetPlugin {
+	fn build(&self, app: &mut App) {
+		app.add_plugins(EventworkPlugin::<TcpProvider, TaskPool>::default())
+			.insert_resource(EventworkRuntime(TaskPoolBuilder::new().num_threads(2).build()))
+			.insert_resource(NetworkSettings::default())
+			.add_systems(Update, handle_net_event)
+			.add_systems(Startup, do_listen);
+	}
+}
+
+fn handle_net_event(
+	mut cmd: Commands,
+	mut events: EventReader<NetworkEvent>,
+	mut render_update: EventWriter<RenderUpdate>,
+	players: Query<(Entity, &Player)>,
+) {
+	for event in events.read() {
+		match event {
+			NetworkEvent::Connected(conn_id) => {
+				println!("New connection, {conn_id:?}.");
+				spawn_player(&mut cmd, *conn_id, IVec2::ZERO);
+				render_update.send(RenderUpdate(IVec2::ZERO));
+			}
+			NetworkEvent::Disconnected(conn_id) => {
+				println!("Lost connection, {conn_id:?}.");
+				remove_player(&mut cmd, *conn_id, &players);
+			}
+			NetworkEvent::Error(network_error) => println!("Network failure '{network_error}'."),
+		}
+	}
+}
+
+fn do_listen(
+	mut net: ResMut<Network<TcpProvider>>,
+	settings: Res<NetworkSettings>,
+	task_pool: Res<EventworkRuntime<TaskPool>>,
+) {
+	net.listen(([0, 0, 0, 0], 9000).into(), &task_pool.0, &settings)
+		.unwrap();
+}