Implement frame advance

src/window/game.rs

@@ -86,6 +86,7 @@ impl GameWindow {
             let is_ready = self.client.sim_state(self.sim_id) == SimState::Ready;
             let can_pause = is_ready && state == EmulatorState::Running;
             let can_resume = is_ready && state == EmulatorState::Paused;
+            let can_frame_advance = is_ready && state != EmulatorState::Debugging;
             if state == EmulatorState::Running {
                 if ui.add_enabled(can_pause, Button::new("Pause")).clicked() {
                     self.client.send_command(EmulatorCommand::Pause);
@@ -100,6 +101,14 @@ impl GameWindow {
                     .send_command(EmulatorCommand::Reset(self.sim_id));
                 ui.close_menu();
             }
+            ui.separator();
+            if ui
+                .add_enabled(can_frame_advance, Button::new("Frame Advance"))
+                .clicked()
+            {
+                self.client.send_command(EmulatorCommand::FrameAdvance);
+                ui.close_menu();
+            }
         });
         ui.menu_button("Options", |ui| self.show_options_menu(ctx, ui));
         ui.menu_button("Multiplayer", |ui| {