get cursor position

client/src/main.rs

@@ -3,6 +3,7 @@ use std::{collections::HashMap, net::UdpSocket, time::SystemTime};
 use bevy::{
     diagnostic::{FrameTimeDiagnosticsPlugin, LogDiagnosticsPlugin},
     prelude::*,
+    render::camera::RenderTarget,
 };
 
 use bevy_egui::{EguiContext, EguiPlugin};
@@ -18,6 +19,9 @@ use daggmask_shared::{
 
 use renet_visualizer::{RenetClientVisualizer, RenetVisualizerStyle};
 
+#[derive(Component)]
+struct MainCamera;
+
 #[derive(Component)]
 struct ControlledPlayer;
 
@@ -77,6 +81,7 @@ fn main() {
     app.insert_resource(NetworkMapping::default());
 
     app.add_system(player_input);
+    app.add_system(cursor_system);
     app.add_system(client_send_input.with_run_criteria(run_if_client_connected));
     app.add_system(client_send_player_commands.with_run_criteria(run_if_client_connected));
     app.add_system(client_sync_players.with_run_criteria(run_if_client_connected));
@@ -133,6 +138,30 @@ fn player_input(
     }
 }
 
+fn cursor_system(
+    wnds: Res<Windows>,
+    q_camera: Query<(&Camera, &GlobalTransform), With<MainCamera>>,
+) {
+    let (camera, camera_transform) = q_camera.single();
+
+    let wnd = if let RenderTarget::Window(id) = camera.target {
+        wnds.get(id).unwrap()
+    } else {
+        wnds.get_primary().unwrap()
+    };
+
+    // check if the cursor is inside the window and get its position
+    if let Some(screen_pos) = wnd.cursor_position() {
+        let window_size = Vec2::new(wnd.width() as f32, wnd.height() as f32);
+        let ndc = (screen_pos / window_size) * 2.0 - Vec2::ONE;
+        let ndc_to_world = camera_transform.compute_matrix() * camera.projection_matrix().inverse();
+        let world_pos = ndc_to_world.project_point3(ndc.extend(-1.0));
+        let world_pos: Vec2 = world_pos.truncate();
+
+        info!("World coords: {}/{}", world_pos.x, world_pos.y);
+    }
+}
+
 fn client_send_input(player_input: Res<PlayerInput>, mut client: ResMut<RenetClient>) {
     let input_message = bincode::serialize(&*player_input).unwrap();
 
@@ -247,5 +276,7 @@ fn client_sync_players(
 }
 
 fn setup_camera(mut commands: Commands) {
-    commands.spawn_bundle(Camera2dBundle::default());
+    commands
+        .spawn_bundle(Camera2dBundle::default())
+        .insert(MainCamera);
 }

server/src/main.rs

@@ -6,7 +6,8 @@ use bevy::{
 };
 
 use bevy_egui::{EguiContext, EguiPlugin};
-use bevy_rapier2d::{prelude::*, rapier::prelude::CollisionEventFlags};
+use bevy_rapier2d::prelude::*;
+
 use bevy_renet::{
     renet::{RenetServer, ServerAuthentication, ServerConfig, ServerEvent},
     RenetServerPlugin,