Release input on focus loss

src/game/game.rs

@@ -11,6 +11,8 @@ pub struct Game {
 	pub player: Ship,
 	pub system: System,
 	pub camera: Camera,
+	paused: bool,
+	pub time_scale: f32,
 }
 
 impl Game {
@@ -24,6 +26,8 @@ impl Game {
 				zoom: 500.0,
 			},
 			system: System::new(&ct.systems[0]),
+			paused: false,
+			time_scale: 1.0,
 		}
 	}
 
@@ -39,8 +43,17 @@ impl Game {
 		self.input.process_scroll(delta, phase)
 	}
 
+	pub fn set_paused(&mut self, pause: bool) {
+		if pause {
+			self.paused = true;
+			self.input.release_all()
+		} else {
+			self.paused = false;
+		}
+	}
+
 	pub fn update(&mut self) {
-		let t: f32 = self.last_update.elapsed().as_secs_f32();
+		let t: f32 = self.last_update.elapsed().as_secs_f32() * self.time_scale;
 
 		if self.input.key_thrust {
 			self.player.physicsbody.thrust(50.0 * t);

src/game/inputstatus.rs

@@ -19,6 +19,12 @@ impl InputStatus {
 		}
 	}
 
+	pub fn release_all(&mut self) {
+		self.key_left = false;
+		self.key_right = false;
+		self.key_thrust = false;
+	}
+
 	pub fn process_key(&mut self, state: &ElementState, key: &VirtualKeyCode) {
 		let down = state == &ElementState::Pressed;
 		match key {

src/main.rs

@@ -54,6 +54,9 @@ async fn run(mut game: game::Game) -> Result<()> {
 				window_id,
 			} if window_id == gpu.window.id() => {
 				match event {
+					WindowEvent::Focused(state) => {
+						game.set_paused(!state);
+					}
 					WindowEvent::CloseRequested => *control_flow = ControlFlow::Exit,
 					WindowEvent::KeyboardInput {
 						input: