Lightyear setup (#55)

crates/server/src/server.rs

@@ -0,0 +1,45 @@
+use bevy::prelude::*;
+use lightyear::prelude::{
+    server::{NetcodeConfig, NetcodeServer, ServerUdpIo},
+    *,
+};
+use shared::utils::commands::IsServer;
+use std::net::{IpAddr, Ipv4Addr, SocketAddr};
+
+pub fn plugin(app: &mut App) {
+    app.init_resource::<IsServer>();
+
+    app.add_systems(Startup, start_server);
+    app.add_observer(handle_new_client);
+}
+
+fn handle_new_client(
+    trigger: Trigger<OnAdd, Connected>,
+    mut commands: Commands,
+    id: Query<&PeerAddr>,
+) -> Result {
+    let id = id.get(trigger.target())?;
+
+    info!("Client connected on IP: {}", id.ip());
+
+    commands
+        .entity(trigger.target())
+        .insert(ReplicationSender::default());
+
+    Ok(())
+}
+
+fn start_server(mut commands: Commands) -> Result {
+    let server_addr = SocketAddr::new(IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 25565);
+
+    commands
+        .spawn((
+            Name::from("Server"),
+            LocalAddr(server_addr),
+            ServerUdpIo::default(),
+            NetcodeServer::new(NetcodeConfig::default()),
+        ))
+        .trigger(server::Start);
+
+    Ok(())
+}