fix bug

src/player.rs

@@ -6,7 +6,7 @@ use crate::{
 };
 use bevy::{
     input::mouse::AccumulatedMouseMotion, pbr::NotShadowCaster, prelude::*,
-    render::view::RenderLayers,
+    render::view::RenderLayers, window::PrimaryWindow,
 };
 
 #[derive(Debug, Component)]
@@ -24,7 +24,7 @@ impl Default for CameraSensitivity {
 struct WorldModelCamera;
 
 pub fn plugin(app: &mut App) {
-    app.add_systems(OnEnter(GameState::Playing), init_player)
+    app.add_systems(OnEnter(GameState::Playing), (init_player, hide_cursor))
         .add_systems(Update, move_camera.run_if(in_state(GameState::Playing)))
         .add_systems(
             RunFixedMainLoop,
@@ -97,9 +97,14 @@ pub fn init_player(
             ));
         });
 }
+fn hide_cursor(mut windows: Query<&mut Window, With<PrimaryWindow>>) {
+    // Query returns one window typically.
+    for mut window in windows.iter_mut() {
+        window.cursor_options.visible = false;
+    }
+}
 
-use std::f32::consts::FRAC_PI_2;
-const PITCH_LIMIT: f32 = FRAC_PI_2 - 0.01;
+const PITCH_LIMIT: f32 = std::f32::consts::FRAC_PI_2 - 0.01;
 
 pub fn move_camera(
     accumulated_mouse_motion: Res<AccumulatedMouseMotion>,