From 69584a302d132dc2bcc3837437e7347a3e0a5114 Mon Sep 17 00:00:00 2001
From: Alexander Foremny <aforemny@posteo.de>
Date: Thu, 14 Mar 2024 06:43:53 +0100
Subject: feat: players can teleport

---
 src/server.rs | 83 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 83 insertions(+)
 create mode 100644 src/server.rs

(limited to 'src/server.rs')

diff --git a/src/server.rs b/src/server.rs
new file mode 100644
index 0000000..3a7dd40
--- /dev/null
+++ b/src/server.rs
@@ -0,0 +1,83 @@
+use crate::protocol::*;
+use crate::server::network::*;
+use crate::shared::*;
+use bevy::prelude::*;
+use bevy::utils::HashMap;
+use lightyear::prelude::*;
+use rand::Rng;
+
+mod network;
+
+#[derive(Resource, Default)]
+struct EntityMap(HashMap<ClientId, Entity>);
+
+pub fn main(transport: TransportConfig) {
+    App::new()
+        .add_plugins(MinimalPlugins)
+        .add_plugins(ServerPlugin { transport })
+        .run();
+}
+
+struct ServerPlugin {
+    pub transport: TransportConfig,
+}
+
+impl Plugin for ServerPlugin {
+    fn build(&self, app: &mut App) {
+        app.insert_resource(EntityMap::default())
+            .add_plugins(NetworkPlugin {
+                transport: self.transport.clone(),
+            })
+            .add_systems(Update, connections)
+            .add_systems(FixedUpdate, player_input);
+    }
+}
+
+fn connections(
+    mut commands: Commands,
+    mut connects: EventReader<server::ConnectEvent>,
+    mut disconnects: EventReader<server::DisconnectEvent>,
+    mut entity_map: ResMut<EntityMap>,
+) {
+    let mut rng = rand::thread_rng();
+    for connection in connects.read() {
+        let client_id = connection.context();
+        info!("connected: {:?}", client_id);
+        let position = Vec2::new(
+            50. * rng.gen_range(-2..=2) as f32,
+            50. * rng.gen_range(-2..=2) as f32,
+        );
+        let color = Color::hsl(360. * rng.gen_range(0..=15) as f32 / 16., 0.95, 0.7);
+        let entity = commands.spawn(PlayerBundle::new(*client_id, position, color));
+        entity_map.0.insert(*client_id, entity.id());
+    }
+    for connection in disconnects.read() {
+        let client_id = connection.context();
+        info!("disconnected: {:?}", client_id);
+        if let Some(entity_id) = entity_map.0.remove(client_id) {
+            commands.entity(entity_id).despawn();
+        }
+    }
+}
+
+fn player_input(
+    entity_map: Res<EntityMap>,
+    mut input_reader: EventReader<server::InputEvent<Inputs>>,
+    mut positions: Query<&mut PlayerPosition>,
+) {
+    for input in input_reader.read() {
+        let client_id = input.context();
+        if let Some(input) = input.input() {
+            if let Some(entity_id) = entity_map.0.get(client_id) {
+                match input {
+                    Inputs::Teleport(new_position) => {
+                        if let Ok(mut position) = positions.get_mut(*entity_id) {
+                            position.0 = *new_position;
+                        }
+                    }
+                    _ => {}
+                }
+            }
+        }
+    }
+}
-- 
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