Frontend menu + settings + saves foundation

Netcode frontend pattern: UITK main menu / pause / settings (MenuUi + controllers), on-demand world lifecycle (WorldLauncher/SessionRunner), GameBootstrap menu branch; Graphics/Audio settings (SettingsService/GameVolume); single-slot save foundation (SaveData/SaveService, born-correct load at director spawn, autosave on Siege->Calm + quit); RuntimePanelSettings + theme; BuildTool menu; 10 EditMode tests. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-06 15:05:36 -07:00
parent f3f65bccbf
commit f31ffe910b
56 changed files with 1744 additions and 8 deletions
@@ -0,0 +1,104 @@
+using ProjectM.Simulation;
+using Unity.Entities;
+using UnityEngine;
+using UnityEngine.UIElements;
+
+namespace ProjectM.Client
+{
+    /// <summary>
+    /// Drives the front-end main menu (UI Toolkit). Lives on a GameObject (with a <c>UIDocument</c>) in
+    /// MainMenu.unity — build index 0. On <see cref="Awake"/> it ENSURES a default "menu" world exists (the
+    /// bootstrap creates one on first boot, but on return-from-game <c>World.DisposeAllWorlds</c> left none and
+    /// <c>Initialize</c> does not re-run), ensures the EventSystem, and assigns the shared PanelSettings; on
+    /// enable it builds the menu. Single/Host/Join hand off to <see cref="WorldLauncher"/>.
+    /// </summary>
+    [RequireComponent(typeof(UIDocument))]
+    public class MainMenuController : MonoBehaviour
+    {
+        UIDocument _doc;
+        VisualElement _mainPanel;
+        VisualElement _settingsPanel;
+        TextField _ipField;
+
+        void Awake()
+        {
+            EnsureMenuWorld();
+            MenuUi.EnsureEventSystem();
+            _doc = GetComponent<UIDocument>();
+            if (_doc.panelSettings == null)
+                _doc.panelSettings = MenuUi.LoadPanelSettings();
+            // The menu owns the cursor.
+            UnityEngine.Cursor.lockState = CursorLockMode.None;
+            UnityEngine.Cursor.visible = true;
+        }
+
+        void OnEnable()
+        {
+            if (_doc == null) _doc = GetComponent<UIDocument>();
+            var root = _doc.rootVisualElement;
+            if (root == null) return;
+            root.Clear();
+            BuildMain(root);
+        }
+
+        static void EnsureMenuWorld()
+        {
+            var w = World.DefaultGameObjectInjectionWorld;
+            if (w == null || !w.IsCreated)
+                DefaultWorldInitialization.Initialize("MenuWorld", false);
+        }
+
+        void BuildMain(VisualElement root)
+        {
+            _mainPanel = MenuUi.FullScreenRoot(true);
+            var card = MenuUi.Card("PROJECT M");
+            card.Add(MenuUi.Caption("Frontier colony — co-op"));
+
+            card.Add(MenuUi.Button("Single Player", () => Launch(SessionMode.Single, false)));
+
+            if (SaveService.HasSave())
+                card.Add(MenuUi.Button("Continue", () => Launch(SessionMode.Single, true)));
+
+            card.Add(MenuUi.Button("Host Co-op (LAN)", () => Launch(SessionMode.Host, SaveService.HasSave())));
+
+            _ipField = new TextField("Join IP") { value = "127.0.0.1" };
+            _ipField.style.marginTop = 8;
+            card.Add(_ipField);
+            card.Add(MenuUi.Button("Join", () => Launch(SessionMode.Join, false)));
+
+            card.Add(MenuUi.Button("Settings", ShowSettings));
+            card.Add(MenuUi.Button("Quit", Quit));
+
+            _mainPanel.Add(card);
+            root.Add(_mainPanel);
+        }
+
+        void Launch(SessionMode mode, bool loadSave)
+        {
+            string ip = _ipField != null ? _ipField.value : "127.0.0.1";
+            WorldLauncher.StartSession(mode, ip, loadSave);
+        }
+
+        void ShowSettings()
+        {
+            _mainPanel.style.display = DisplayStyle.None;
+            _settingsPanel = SettingsScreen.Build(HideSettings);
+            _doc.rootVisualElement.Add(_settingsPanel);
+        }
+
+        void HideSettings()
+        {
+            if (_settingsPanel != null) { _settingsPanel.RemoveFromHierarchy(); _settingsPanel = null; }
+            _mainPanel.style.display = DisplayStyle.Flex;
+        }
+
+        static void Quit()
+        {
+#if UNITY_EDITOR
+            UnityEditor.EditorApplication.isPlaying = false;
+#else
+            Application.Quit();
+#endif
+        }
+    }
+}
@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: bb953c16db2c778418e6c1c049c003aa
@@ -0,0 +1,118 @@
+using System;
+using UnityEngine;
+using UnityEngine.EventSystems;
+using UnityEngine.InputSystem.UI;
+using UnityEngine.UIElements;
+
+namespace ProjectM.Client
+{
+    /// <summary>
+    /// Shared UI Toolkit helpers for the code-built menu / settings / pause screens — a small palette + styled
+    /// element factories (so every screen reads in one visual language) plus runtime plumbing: loading the
+    /// shared <c>PanelSettings</c> (from Resources) and ensuring an <c>EventSystem</c> with an
+    /// <c>InputSystemUIInputModule</c> exists. Runtime UITK receives pointer/click events THROUGH the
+    /// EventSystem, and this project uses the Input System (1.19.0), so the module must be the Input-System one,
+    /// not the legacy StandaloneInputModule — without it the buttons are silently dead.
+    /// </summary>
+    public static class MenuUi
+    {
+        public static readonly Color Bg = new(0.04f, 0.05f, 0.07f, 0.96f);
+        public static readonly Color PanelBg = new(0.09f, 0.11f, 0.15f, 0.98f);
+        public static readonly Color Accent = new(0.30f, 0.85f, 1f, 1f);   // Aether cyan
+        public static readonly Color TextCol = new(0.86f, 0.92f, 0.97f, 1f);
+        public static readonly Color SubCol = new(0.60f, 0.68f, 0.76f, 1f);
+
+        public static PanelSettings LoadPanelSettings()
+            => Resources.Load<PanelSettings>("RuntimePanelSettings");
+
+        public static void EnsureEventSystem()
+        {
+            if (UnityEngine.Object.FindFirstObjectByType<EventSystem>() != null) return;
+            var go = new GameObject("EventSystem");
+            go.AddComponent<EventSystem>();
+            go.AddComponent<InputSystemUIInputModule>();
+        }
+
+        public static VisualElement FullScreenRoot(bool dim)
+        {
+            var root = new VisualElement();
+            root.style.position = Position.Absolute;
+            root.style.left = 0; root.style.right = 0; root.style.top = 0; root.style.bottom = 0;
+            root.style.alignItems = Align.Center;
+            root.style.justifyContent = Justify.Center;
+            if (dim) root.style.backgroundColor = Bg;
+            return root;
+        }
+
+        public static VisualElement Card(string titleText)
+        {
+            var card = new VisualElement();
+            card.style.backgroundColor = PanelBg;
+            card.style.paddingLeft = 28; card.style.paddingRight = 28;
+            card.style.paddingTop = 22; card.style.paddingBottom = 22;
+            card.style.minWidth = 380;
+            card.style.alignItems = Align.Stretch;
+            Round(card, 10);
+            Border(card, new Color(Accent.r, Accent.g, Accent.b, 0.25f), 1);
+            if (!string.IsNullOrEmpty(titleText)) card.Add(Title(titleText));
+            return card;
+        }
+
+        public static Label Title(string text)
+        {
+            var l = new Label(text);
+            l.style.unityFontStyleAndWeight = FontStyle.Bold;
+            l.style.fontSize = 26;
+            l.style.color = Accent;
+            l.style.unityTextAlign = TextAnchor.MiddleCenter;
+            l.style.marginBottom = 16;
+            return l;
+        }
+
+        public static Label Caption(string text)
+        {
+            var l = new Label(text);
+            l.style.fontSize = 13;
+            l.style.color = SubCol;
+            l.style.unityTextAlign = TextAnchor.MiddleCenter;
+            l.style.marginTop = 8; l.style.marginBottom = 6;
+            return l;
+        }
+
+        public static Button Button(string text, Action onClick)
+        {
+            var b = new Button(onClick) { text = text };
+            b.style.height = 40;
+            b.style.fontSize = 16;
+            b.style.marginTop = 5; b.style.marginBottom = 5;
+            b.style.color = TextCol;
+            b.style.backgroundColor = new Color(0.16f, 0.20f, 0.27f, 1f);
+            b.style.unityFontStyleAndWeight = FontStyle.Bold;
+            Round(b, 6);
+            Border(b, new Color(0f, 0f, 0f, 0f), 0);
+            return b;
+        }
+
+        public static Button SmallButton(string text, Action onClick)
+        {
+            var b = Button(text, onClick);
+            b.style.width = 36; b.style.height = 30;
+            b.style.marginLeft = 4; b.style.marginRight = 4;
+            return b;
+        }
+
+        public static void Round(VisualElement e, float r)
+        {
+            e.style.borderTopLeftRadius = r; e.style.borderTopRightRadius = r;
+            e.style.borderBottomLeftRadius = r; e.style.borderBottomRightRadius = r;
+        }
+
+        public static void Border(VisualElement e, Color c, float w)
+        {
+            e.style.borderLeftWidth = w; e.style.borderRightWidth = w;
+            e.style.borderTopWidth = w; e.style.borderBottomWidth = w;
+            e.style.borderLeftColor = c; e.style.borderRightColor = c;
+            e.style.borderTopColor = c; e.style.borderBottomColor = c;
+        }
+    }
+}
@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: f2a83d2b10895944492bb7441e8308e1
@@ -0,0 +1,87 @@
+using UnityEngine;
+using UnityEngine.UIElements;
+
+namespace ProjectM.Client
+{
+    /// <summary>
+    /// In-game pause overlay (UI Toolkit), spawned by <see cref="PauseMenuSystem"/> in the client world. Esc
+    /// toggles it; Resume / Settings / Quit-to-Menu / Quit-to-Desktop. Quit-to-Menu hands off to
+    /// <see cref="WorldLauncher.TeardownToMenu"/> (autosave + dispose worlds + load MainMenu). Builds its own
+    /// UIDocument in code (shared PanelSettings from Resources) above the HUD; the scene swap on Quit-to-Menu
+    /// destroys it.
+    /// </summary>
+    public class PauseMenuController : MonoBehaviour
+    {
+        UIDocument _doc;
+        VisualElement _root;
+        VisualElement _pausePanel;
+        VisualElement _settingsPanel;
+        bool _open;
+        /// <summary>True while the pause overlay is shown (BuildSendSystem suspends build-clicks while paused).</summary>
+        public static bool Open;
+
+        void Awake()
+        {
+            MenuUi.EnsureEventSystem();
+            _doc = gameObject.AddComponent<UIDocument>();
+            _doc.panelSettings = MenuUi.LoadPanelSettings();
+            _doc.sortingOrder = 100; // above the in-game HUD
+        }
+
+        void Start()
+        {
+            _root = _doc.rootVisualElement;
+            Build();
+            SetOpen(false);
+        }
+
+        void Update()
+        {
+            var kb = UnityEngine.InputSystem.Keyboard.current;
+            if (kb != null && kb.escapeKey.wasPressedThisFrame)
+                SetOpen(!_open);
+        }
+
+        void Build()
+        {
+            _pausePanel = MenuUi.FullScreenRoot(false);
+            _pausePanel.style.backgroundColor = new Color(0.02f, 0.03f, 0.05f, 0.72f);
+            var card = MenuUi.Card("PAUSED");
+            card.Add(MenuUi.Button("Resume", () => SetOpen(false)));
+            card.Add(MenuUi.Button("Settings", ShowSettings));
+            card.Add(MenuUi.Button("Quit to Menu", WorldLauncher.TeardownToMenu));
+            card.Add(MenuUi.Button("Quit to Desktop", Quit));
+            _pausePanel.Add(card);
+            _root.Add(_pausePanel);
+        }
+
+        void SetOpen(bool open)
+        {
+            _open = open;
+            Open = open;
+            if (_pausePanel != null) _pausePanel.style.display = open ? DisplayStyle.Flex : DisplayStyle.None;
+            if (!open && _settingsPanel != null) { _settingsPanel.RemoveFromHierarchy(); _settingsPanel = null; }
+            if (open) { UnityEngine.Cursor.lockState = CursorLockMode.None; UnityEngine.Cursor.visible = true; }
+        }
+
+        void ShowSettings()
+        {
+            _pausePanel.style.display = DisplayStyle.None;
+            _settingsPanel = SettingsScreen.Build(() =>
+            {
+                if (_settingsPanel != null) { _settingsPanel.RemoveFromHierarchy(); _settingsPanel = null; }
+                _pausePanel.style.display = DisplayStyle.Flex;
+            });
+            _root.Add(_settingsPanel);
+        }
+
+        static void Quit()
+        {
+#if UNITY_EDITOR
+            UnityEditor.EditorApplication.isPlaying = false;
+#else
+            Application.Quit();
+#endif
+        }
+    }
+}
@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 76b9e91f569010b4aaf703ce756a4b1c
@@ -0,0 +1,26 @@
+using Unity.Entities;
+using Unity.NetCode;
+using UnityEngine;
+
+namespace ProjectM.Client
+{
+    /// <summary>
+    /// Client-only bootstrap that ensures the in-game pause overlay (Esc) exists once a session is running.
+    /// Mirrors how HudSystem creates its UI at runtime — spawns one <see cref="PauseMenuController"/> GameObject
+    /// in the active (Game) scene; the scene swap on Quit-to-Menu destroys it, and a fresh session's new client
+    /// world spawns a new one. Client world only, so the menu's plain default world never spawns a pause overlay.
+    /// </summary>
+    [WorldSystemFilter(WorldSystemFilterFlags.ClientSimulation)]
+    [UpdateInGroup(typeof(PresentationSystemGroup))]
+    public partial class PauseMenuSystem : SystemBase
+    {
+        bool _spawned;
+
+        protected override void OnUpdate()
+        {
+            if (_spawned) return;
+            _spawned = true;
+            new GameObject("~PauseMenu").AddComponent<PauseMenuController>();
+        }
+    }
+}
@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 0bbe1a1c153da4c4499841a023262e9e
@@ -0,0 +1,32 @@
+using System.Collections;
+using UnityEngine;
+
+namespace ProjectM.Client
+{
+    /// <summary>
+    /// Persistent (<c>DontDestroyOnLoad</c>) MonoBehaviour that hosts the world-lifecycle coroutines for
+    /// <see cref="WorldLauncher"/>. World create/dispose + scene loads must run at a FRAME BOUNDARY (never
+    /// inside an ECS system update — that crashes), and must survive the MainMenu&lt;-&gt;Game scene swap, so a
+    /// single long-lived runner owns them. Created lazily on first use.
+    /// </summary>
+    public class SessionRunner : MonoBehaviour
+    {
+        static SessionRunner _instance;
+
+        static SessionRunner Instance
+        {
+            get
+            {
+                if (_instance == null)
+                {
+                    var go = new GameObject("~SessionRunner");
+                    DontDestroyOnLoad(go);
+                    _instance = go.AddComponent<SessionRunner>();
+                }
+                return _instance;
+            }
+        }
+
+        public static void Run(IEnumerator routine) => Instance.StartCoroutine(routine);
+    }
+}
@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: e2af19327c034684da1997a5478f7e31
@@ -0,0 +1,128 @@
+using System;
+using UnityEngine;
+using UnityEngine.UIElements;
+
+namespace ProjectM.Client
+{
+    /// <summary>
+    /// Code-built UI Toolkit settings panel (Graphics + Audio) shared by the main menu and the in-game pause
+    /// overlay. Binds to <see cref="SettingsService"/>: edits a working copy, previews audio live, and persists
+    /// + applies on Apply/Back. Enum settings use compact "&lt; value &gt;" cycle rows (robust, no dropdown-popup
+    /// theming); volumes use sliders with a live percentage readout.
+    /// </summary>
+    public static class SettingsScreen
+    {
+        public static VisualElement Build(Action onBack)
+        {
+            var working = SettingsService.Current;
+
+            var root = MenuUi.FullScreenRoot(true);
+            var card = MenuUi.Card("SETTINGS");
+            card.style.minWidth = 480;
+            root.Add(card);
+
+            // ---------------- Graphics ----------------
+            card.Add(MenuUi.Caption("— GRAPHICS —"));
+
+            var resolutions = Screen.resolutions;
+            int resIndex = FindResIndex(resolutions, working.ResWidth, working.ResHeight);
+            card.Add(CycleRow("Resolution",
+                () => resolutions.Length > 0 ? ResLabel(resolutions[Mathf.Clamp(resIndex, 0, resolutions.Length - 1)]) : $"{working.ResWidth}x{working.ResHeight}",
+                dir =>
+                {
+                    if (resolutions.Length == 0) return;
+                    resIndex = Wrap(resIndex + dir, resolutions.Length);
+                    var r = resolutions[resIndex];
+                    working.ResWidth = r.width;
+                    working.ResHeight = r.height;
+                    working.RefreshHz = Mathf.RoundToInt((float)r.refreshRateRatio.value);
+                }));
+
+            string[] modes = { "Exclusive", "Borderless", "Maximized", "Windowed" };
+            card.Add(CycleRow("Display Mode",
+                () => modes[Mathf.Clamp(working.FullScreenMode, 0, 3)],
+                dir => working.FullScreenMode = Wrap(working.FullScreenMode + dir, 4)));
+
+            var qnames = QualitySettings.names;
+            card.Add(CycleRow("Quality",
+                () => qnames.Length > 0 ? qnames[Mathf.Clamp(working.QualityLevel, 0, qnames.Length - 1)] : "—",
+                dir => { if (qnames.Length > 0) working.QualityLevel = Wrap(working.QualityLevel + dir, qnames.Length); }));
+
+            string[] vsync = { "Off", "On", "Half" };
+            card.Add(CycleRow("V-Sync",
+                () => vsync[Mathf.Clamp(working.VSync, 0, 2)],
+                dir => working.VSync = Wrap(working.VSync + dir, 3)));
+
+            // ---------------- Audio ----------------
+            card.Add(MenuUi.Caption("— AUDIO —"));
+            card.Add(VolumeRow("Master", working.Master, v => { working.Master = v; AudioListener.volume = v; }));
+            card.Add(VolumeRow("Music", working.Music, v => { working.Music = v; GameVolume.Music = v; }));
+            card.Add(VolumeRow("SFX", working.Sfx, v => { working.Sfx = v; GameVolume.Sfx = v; }));
+
+            // ---------------- Buttons ----------------
+            var apply = MenuUi.Button("Apply", () => SettingsService.SaveAndApply(working));
+            apply.style.backgroundColor = new Color(0.12f, 0.30f, 0.22f, 1f);
+            card.Add(apply);
+            card.Add(MenuUi.Button("Back", () =>
+            {
+                SettingsService.SaveAndApply(working);
+                onBack?.Invoke();
+            }));
+
+            return root;
+        }
+
+        static VisualElement CycleRow(string name, Func<string> getValue, Action<int> onCycle)
+        {
+            var row = Row(name);
+            var val = new Label(getValue());
+            val.style.flexGrow = 1;
+            val.style.unityTextAlign = TextAnchor.MiddleCenter;
+            val.style.color = MenuUi.TextCol;
+            val.style.fontSize = 15;
+            var dec = MenuUi.SmallButton("<", () => { onCycle(-1); val.text = getValue(); });
+            var inc = MenuUi.SmallButton(">", () => { onCycle(+1); val.text = getValue(); });
+            row.Add(dec); row.Add(val); row.Add(inc);
+            return row;
+        }
+
+        static VisualElement VolumeRow(string name, float initial, Action<float> onChange)
+        {
+            var row = Row(name);
+            var slider = new Slider(0f, 1f) { value = initial };
+            slider.style.flexGrow = 1;
+            var pct = new Label(Pct(initial));
+            pct.style.minWidth = 52;
+            pct.style.unityTextAlign = TextAnchor.MiddleRight;
+            pct.style.color = MenuUi.TextCol;
+            slider.RegisterValueChangedCallback(evt => { onChange(evt.newValue); pct.text = Pct(evt.newValue); });
+            row.Add(slider); row.Add(pct);
+            return row;
+        }
+
+        static VisualElement Row(string name)
+        {
+            var row = new VisualElement();
+            row.style.flexDirection = FlexDirection.Row;
+            row.style.alignItems = Align.Center;
+            row.style.marginTop = 4; row.style.marginBottom = 4;
+            var label = new Label(name);
+            label.style.minWidth = 120;
+            label.style.color = MenuUi.SubCol;
+            label.style.fontSize = 14;
+            row.Add(label);
+            return row;
+        }
+
+        static string ResLabel(Resolution r) => $"{r.width} x {r.height} @ {Mathf.RoundToInt((float)r.refreshRateRatio.value)}";
+        static string Pct(float v) => Mathf.RoundToInt(v * 100f) + "%";
+        static int Wrap(int i, int n) => n <= 0 ? 0 : ((i % n) + n) % n;
+
+        static int FindResIndex(Resolution[] all, int w, int h)
+        {
+            for (int i = 0; i < all.Length; i++)
+                if (all[i].width == w && all[i].height == h) return i;
+            return Mathf.Max(0, all.Length - 1); // default to the highest available
+        }
+    }
+}
@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 8cd9f577a41c1974796661abc14266d6
@@ -0,0 +1,176 @@
+using System;
+using System.Collections;
+using ProjectM.Simulation;
+using Unity.Entities;
+using Unity.NetCode;
+using UnityEngine;
+using UnityEngine.SceneManagement;
+
+namespace ProjectM.Client
+{
+    public enum SessionMode { Single, Host, Join }
+
+    /// <summary>
+    /// The SINGLE funnel for netcode world lifecycle driven by the menu, so a connection/handshake fix lives in
+    /// one place. <see cref="StartSession"/> creates the right worlds (Single/Host = server+client, Join =
+    /// client-only) via the public <c>ClientServerBootstrap.Create*World</c> helpers (which register the
+    /// ServerWorld/ClientWorld statics), seeds the existing <see cref="ConnectionConfig"/> request component,
+    /// optionally stages a save (Continue), then loads Game.unity worlds-first (the subscene-streaming
+    /// invariant). <see cref="TeardownToMenu"/> autosaves (host), disposes all worlds, and returns to MainMenu.
+    /// Every dispose/scene step runs at a frame boundary on <see cref="SessionRunner"/> — never in an ECS system.
+    /// </summary>
+    public static class WorldLauncher
+    {
+        public const ushort Port = 7979;
+        const string GameScene = "Game";
+        const string MenuScene = "MainMenu";
+        const string Loopback = "127.0.0.1";
+
+        public static bool Busy { get; private set; }
+
+        public static void StartSession(SessionMode mode, string joinIp, bool loadSave)
+        {
+            if (Busy) return;
+            Busy = true;
+            SessionRunner.Run(StartRoutine(mode, joinIp, loadSave));
+        }
+
+        public static void TeardownToMenu()
+        {
+            if (Busy) return;
+            Busy = true;
+            SessionRunner.Run(TeardownRoutine());
+        }
+
+        static IEnumerator StartRoutine(SessionMode mode, string joinIp, bool loadSave)
+        {
+            // Dispose the idle menu world so a netcode world can own DefaultGameObjectInjectionWorld (the
+            // subscene then streams into the netcode worlds, exactly as in the always-on bootstrap flow).
+            World.DisposeAllWorlds();
+            yield return null;
+
+            World server = null;
+            World client = ClientServerBootstrap.CreateClientWorld("ClientWorld");
+
+            if (mode == SessionMode.Join)
+            {
+                Seed(client, ConnectionMode.Join, string.IsNullOrWhiteSpace(joinIp) ? Loopback : joinIp.Trim(), Port);
+            }
+            else
+            {
+                server = ClientServerBootstrap.CreateServerWorld("ServerWorld");
+                string bind = mode == SessionMode.Single ? Loopback : "0.0.0.0"; // Single binds loopback (no firewall)
+                Seed(server, ConnectionMode.Host, bind, Port);
+                Seed(client, ConnectionMode.Join, Loopback, Port);
+                if (loadSave) StagePendingSave(server);
+            }
+
+            World.DefaultGameObjectInjectionWorld = server ?? client;
+
+            // Worlds exist -> loading Game.unity streams its SubScene into them.
+            SceneManager.LoadScene(GameScene, LoadSceneMode.Single);
+            Busy = false;
+        }
+
+        static IEnumerator TeardownRoutine()
+        {
+            var server = ClientServerBootstrap.ServerWorld;
+            if (server is { IsCreated: true })
+                TrySaveFromServer(server);
+
+            yield return null;
+            World.DisposeAllWorlds();
+            yield return null;
+
+            SceneManager.LoadScene(MenuScene, LoadSceneMode.Single);
+            Busy = false;
+        }
+
+        static void Seed(World world, ConnectionMode mode, string address, ushort port)
+        {
+            if (world is not { IsCreated: true }) return;
+            var em = world.EntityManager;
+            using var q = em.CreateEntityQuery(ComponentType.ReadWrite<ConnectionConfig>());
+            Entity e = q.IsEmptyIgnoreFilter ? em.CreateEntity(typeof(ConnectionConfig)) : q.GetSingletonEntity();
+            em.SetComponentData(e, new ConnectionConfig
+            {
+                Mode = mode,
+                Address = address,
+                Port = port,
+                Requested = true,
+            });
+        }
+
+        static void StagePendingSave(World server)
+        {
+            var data = SaveService.Load();
+            if (data == null) return;
+            var em = server.EntityManager;
+            var e = em.CreateEntity();
+            em.AddComponentData(e, new PendingSave { GoalCharge = data.GoalCharge, GoalTarget = data.GoalTarget, HasData = 1 });
+            var buf = em.AddBuffer<PendingSaveLedgerRow>(e);
+            if (data.Ledger != null)
+                foreach (var row in data.Ledger)
+                    buf.Add(new PendingSaveLedgerRow { ItemId = (ushort)row.ItemId, Count = row.Count });
+
+            // M7: stage player-built structures on a SEPARATE carrier (BaseRestoreSystem owns its lifecycle; the
+            // PendingSave entity above is consumed + destroyed by CycleDirectorSpawnSystem at director spawn).
+            if (data.Structures != null && data.Structures.Length > 0)
+            {
+                var se = em.CreateEntity();
+                var sbuf = em.AddBuffer<PendingStructure>(se);
+                foreach (var s in data.Structures)
+                    sbuf.Add(new PendingStructure
+                    {
+                        Type = s.Type, CellX = s.CellX, CellZ = s.CellZ, Direction = s.Direction,
+                        RemainingTicks = s.RemainingTicks, ConveyorResId = s.ConveyorResId, ConveyorCount = s.ConveyorCount,
+                    });
+                var iobuf = em.AddBuffer<PendingStructureIo>(se);
+                if (data.StructureIo != null)
+                    foreach (var io in data.StructureIo)
+                        iobuf.Add(new PendingStructureIo { StructureIndex = io.StructureIndex, Slot = io.Slot, ResourceId = io.ResourceId, Count = io.Count });
+            }
+        }
+
+        static void TrySaveFromServer(World server)
+        {
+            try
+            {
+                var em = server.EntityManager;
+                em.CompleteAllTrackedJobs();
+                using var q = em.CreateEntityQuery(ComponentType.ReadOnly<ResourceLedger>());
+                if (q.IsEmptyIgnoreFilter) return;
+                var dir = q.GetSingletonEntity();
+                var goal = em.HasComponent<GoalProgress>(dir) ? em.GetComponentData<GoalProgress>(dir) : default;
+                var buffer = em.GetBuffer<StorageEntry>(dir, true);
+                var rows = new LedgerRow[buffer.Length];
+                for (int i = 0; i < buffer.Length; i++)
+                    rows[i] = new LedgerRow { ItemId = buffer[i].ItemId, Count = buffer[i].Count };
+
+                // M7: also persist player-built structures (same shared scan as the autosave path).
+                uint nowTick = 0;
+                using (var tq = em.CreateEntityQuery(ComponentType.ReadOnly<NetworkTime>()))
+                    if (!tq.IsEmptyIgnoreFilter)
+                    {
+                        var st = tq.GetSingleton<NetworkTime>().ServerTick;
+                        if (st.IsValid) nowTick = st.TickIndexForValidTick;
+                    }
+                SaveStructureScan.Collect(em, nowTick, out var structures, out var structureIo);
+
+                SaveService.Save(new SaveData
+                {
+                    GoalCharge = goal.Charge,
+                    GoalTarget = goal.Target,
+                    Ledger = rows,
+                    Structures = structures,
+                    StructureIo = structureIo,
+                    SavedAtMs = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds(),
+                });
+            }
+            catch (Exception e)
+            {
+                Debug.LogWarning($"[WorldLauncher] Quit-to-menu save skipped: {e.Message}");
+            }
+        }
+    }
+}
@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 96a2c416d0d434a419db03355c08ffea