More major updates to tools, added map area volume, made gold manager network managed per player.

Assets/DefaultNetworkPrefabs.asset

@@ -13,4 +13,9 @@ MonoBehaviour:
   m_Name: DefaultNetworkPrefabs
   m_EditorClassIdentifier: Unity.Netcode.Runtime::Unity.Netcode.NetworkPrefabsList
   IsDefault: 1
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Assets/_Project/Levels/LevelAuthoring.cs

@@ -69,6 +69,11 @@ namespace TD.Levels
         [Tooltip("If true, GoalVolume gizmos draw whether or not the volume is selected.")]
         public bool alwaysShowGoals = false;
 
+        [Tooltip("If true, MapAreaVolume gizmos draw whether or not the volume is selected. " +
+                 "Defaults to true — the map boundary is generally useful to see while authoring " +
+                 "the rest of the map, not just when the MapAreaVolume itself is selected.")]
+        public bool alwaysShowMapArea = true;
+
         // -------------------------------------------------------------------
         // Bake API
         // -------------------------------------------------------------------

Assets/_Project/Levels/LevelData.cs

@@ -81,6 +81,13 @@ namespace TD.Levels
                  "Length = GridSize.x * GridSize.y.")]
         public PlayerSlot[] OwnerGrid;
 
+        [Tooltip("Per-tile map-area membership. True if the tile is part of the playable map " +
+                 "(inside any MapAreaVolume); false for void tiles outside the map. This is the " +
+                 "outermost gating layer — gameplay queries (placement, ownership, walkability) " +
+                 "are only meaningful for tiles where MapAreaGrid is true. Length = GridSize.x * " +
+                 "GridSize.y.")]
+        public bool[] MapAreaGrid;
+
         // -------------------------------------------------------------------
         // Per-zone and per-goal structures (populated by bake from volume data).
         // -------------------------------------------------------------------

Assets/_Project/Levels/MapAreaVolume.cs

@@ -0,0 +1,103 @@
+using UnityEngine;
+using TD.Core;
+
+#if UNITY_EDITOR
+using UnityEditor;
+#endif
+
+namespace TD.Levels
+{
+    /// <summary>
+    /// Authoring volume defining the playable map area — the bounds the builder can move within
+    /// and the camera can pan to. Has no gameplay payload (no owner, no placement validity, no
+    /// spawner data, no leak target). Multiple instances are allowed; their union defines the
+    /// "map area" as referenced in the per-tile data layering spec.
+    /// </summary>
+    /// <remarks>
+    /// Map area = where the player's attention can go.
+    /// Gameplay area = union of PlayerZone, Spawner, LeakExit, Goal volumes (where rules apply).
+    /// Buffer area = map area minus gameplay area (visible terrain, no gameplay, no building).
+    ///
+    /// Coverage rule: every gameplay volume's tiles must be a subset of the map area. The bake
+    /// validates this in Phase 5 (P5-12) and fails with a hard error if any gameplay volume
+    /// pokes outside the map area.
+    ///
+    /// Drawn as a thicker outline only (no fill) so it reads as a boundary marker rather than
+    /// as a translucent overlay on top of the gameplay volumes. The "always show" toggle on
+    /// LevelAuthoring defaults to true for this volume type because the map boundary is
+    /// generally useful to see during all authoring, not just when this volume is selected.
+    /// </remarks>
+    public class MapAreaVolume : VolumeBase
+    {
+        // Map area draws BELOW player zones (which sit at 0.05). Just above the LevelAuthoring
+        // map-bounds line (0.01) so it doesn't z-fight with that wireframe.
+        private const float FillYLevel = 0.02f;
+
+        protected override bool GetAlwaysShowToggle(LevelAuthoring authoring)
+        {
+            return authoring.alwaysShowMapArea;
+        }
+
+        private void OnDrawGizmosSelected()
+        {
+            DrawGizmosCore();
+        }
+
+        private void OnDrawGizmos()
+        {
+            if (ShouldDrawAlwaysOn())
+            {
+                DrawGizmosCore();
+            }
+        }
+
+        private void DrawGizmosCore()
+        {
+            Color baseColor = PlayerColors.MapArea;
+            DrawThickRectangularOutline(baseColor, yLevel: FillYLevel);
+
+#if UNITY_EDITOR
+            var col = Collider;
+            if (col != null)
+            {
+                Vector3 labelPos = new Vector3(col.bounds.center.x, FillYLevel + 0.1f, col.bounds.center.z);
+                Handles.Label(labelPos, "Map Area");
+            }
+#endif
+        }
+
+        // Draws the volume's tight tile rectangle as a thicker outline. Unity's Gizmos.DrawLine
+        // has no width parameter, so we approximate thickness by drawing the rectangle three
+        // times with small lateral offsets. The offsets are in tile units; 0.04 reads as a
+        // visibly thicker line at typical scene-view zoom without looking like multiple lines.
+        private void DrawThickRectangularOutline(Color outlineColor, float yLevel)
+        {
+            if (!TryGetTightTileRect(out Vector2Int minTile, out Vector2Int maxTile)) return;
+
+            const float thickness = 0.04f;
+            float halfTile = GridCoordinates.TILE_SIZE * 0.5f;
+
+            // Three concentric rectangles: the original edge, slightly inset, slightly outset.
+            DrawOutlineAtInset(minTile, maxTile, halfTile, yLevel, 0f, outlineColor);
+            DrawOutlineAtInset(minTile, maxTile, halfTile, yLevel, +thickness, outlineColor);
+            DrawOutlineAtInset(minTile, maxTile, halfTile, yLevel, -thickness, outlineColor);
+        }
+
+        private static void DrawOutlineAtInset(Vector2Int minTile, Vector2Int maxTile, float halfTile,
+                                               float yLevel, float inset, Color color)
+        {
+            Vector3 sw = new Vector3(minTile.x - halfTile - inset, yLevel, minTile.y - halfTile - inset);
+            Vector3 se = new Vector3(maxTile.x + halfTile + inset, yLevel, minTile.y - halfTile - inset);
+            Vector3 ne = new Vector3(maxTile.x + halfTile + inset, yLevel, maxTile.y + halfTile + inset);
+            Vector3 nw = new Vector3(minTile.x - halfTile - inset, yLevel, maxTile.y + halfTile + inset);
+
+            Color prev = Gizmos.color;
+            Gizmos.color = color;
+            Gizmos.DrawLine(sw, se);
+            Gizmos.DrawLine(se, ne);
+            Gizmos.DrawLine(ne, nw);
+            Gizmos.DrawLine(nw, sw);
+            Gizmos.color = prev;
+        }
+    }
+}

Assets/_Project/Levels/MapAreaVolume.cs.meta

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Assets/_Project/Scenes/Levels/Main.unity

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@@ -682,6 +610,7 @@ MonoBehaviour:
   alwaysShowSpawners: 1
   alwaysShowLeakExits: 1
   alwaysShowGoals: 1
+  alwaysShowMapArea: 1
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     Prefabs:
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Assets/_Project/Scenes/Levels/TestLevel_Thumbnail.png

@@ -1,3 +1,3 @@
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-oid sha256:9b13dafb78f7bc013cba5dd80719fd2e86d11f2601ad7103adc85bfd7aed067d
+oid sha256:62cfc398409e4285b50681d79ae4767183db364b3f9feb9072ddf9dd60ec07d9
-size 5198
+size 12253

Assets/_Project/Scripts/Core/PlayerColors.cs

@@ -31,6 +31,7 @@ namespace TD.Core
 
         // Non-player colors.
         private static readonly Color GoalGold = HexRGB(0xE0, 0xB0, 0x20);   // gold
+        private static readonly Color MapAreaCyan = HexRGB(0xB0, 0xD0, 0xE0);   // muted cyan (background)
         private static readonly Color ErrorPink = HexRGB(0xFF, 0x4A, 0xC8);   // diagnostic
 
         /// <summary>
@@ -60,6 +61,13 @@ namespace TD.Core
         /// <summary>The canonical color used for goal volumes. Not tied to any player.</summary>
         public static Color Goal => GoalGold;
 
+        /// <summary>
+        /// The canonical color used for MapAreaVolume gizmos. Muted cyan — distinct from any
+        /// player color and from goal gold. Intended to read as background context rather than
+        /// as a gameplay element.
+        /// </summary>
+        public static Color MapArea => MapAreaCyan;
+
         /// <summary>Diagnostic color used when a volume has an invalid/missing owner.</summary>
         public static Color Error => ErrorPink;
 

Assets/_Project/Scripts/Editor/Levels/LevelBakePipeline.cs

@@ -89,7 +89,8 @@ namespace TD.Levels.Editor
 
             Debug.Log($"[LevelBake] {outcome} — '{ctx.Authoring.mapName}' " +
                       $"({ctx.PlayerZoneVolumes.Count} player zones, {ctx.SpawnerVolumes.Count} spawners, " +
-                      $"{ctx.LeakExitVolumes.Count} leak exits, {ctx.GoalVolumes.Count} goals; " +
+                      $"{ctx.LeakExitVolumes.Count} leak exits, {ctx.GoalVolumes.Count} goals, " +
+                      $"{ctx.MapAreaVolumes.Count} map areas; " +
                       $"grid {ctx.GridSize.x}×{ctx.GridSize.y}; {report.WarningCount} warnings)");
 
             if (report.WarningCount > 0)
@@ -128,12 +129,14 @@ namespace TD.Levels.Editor
             ctx.SpawnerVolumes = rootTransform.GetComponentsInChildren<SpawnerVolume>(includeInactive: false).ToList();
             ctx.LeakExitVolumes = rootTransform.GetComponentsInChildren<LeakExitVolume>(includeInactive: false).ToList();
             ctx.GoalVolumes = rootTransform.GetComponentsInChildren<GoalVolume>(includeInactive: false).ToList();
+            ctx.MapAreaVolumes = rootTransform.GetComponentsInChildren<MapAreaVolume>(includeInactive: false).ToList();
 
             ctx.AllVolumes = new List<VolumeBase>();
             ctx.AllVolumes.AddRange(ctx.PlayerZoneVolumes);
             ctx.AllVolumes.AddRange(ctx.SpawnerVolumes);
             ctx.AllVolumes.AddRange(ctx.LeakExitVolumes);
             ctx.AllVolumes.AddRange(ctx.GoalVolumes);
+            ctx.AllVolumes.AddRange(ctx.MapAreaVolumes);
 
             // Full-scene scan: catch volumes that exist but aren't parented under _LevelAuthoring.
             var orphanCandidates = UnityEngine.Object.FindObjectsByType<VolumeBase>(FindObjectsInactive.Exclude);
@@ -152,6 +155,7 @@ namespace TD.Levels.Editor
             ctx.SpawnerVolumes.Sort((a, b) => string.CompareOrdinal(CanonicalPath(a, rootTransform), CanonicalPath(b, rootTransform)));
             ctx.LeakExitVolumes.Sort((a, b) => string.CompareOrdinal(CanonicalPath(a, rootTransform), CanonicalPath(b, rootTransform)));
             ctx.GoalVolumes.Sort((a, b) => string.CompareOrdinal(CanonicalPath(a, rootTransform), CanonicalPath(b, rootTransform)));
+            ctx.MapAreaVolumes.Sort((a, b) => string.CompareOrdinal(CanonicalPath(a, rootTransform), CanonicalPath(b, rootTransform)));
         }
 
         // Builds the canonical path string for a transform, relative to the root, with sibling
@@ -214,6 +218,17 @@ namespace TD.Levels.Editor
                 report.Error("P2-2", $"Found {ctx.GoalVolumes.Count} GoalVolume(s); LevelAuthoring expects {auth.expectedGoalCount}.");
             }
 
+            // P2-22: at least one MapAreaVolume is present.
+            // The map area is required (not inferred) so that gameplay bounds stay decoupled from
+            // visual geometry. See "Lessons Learned" — inferring playable bounds from terrain
+            // mesh extent was deliberately rejected.
+            if (ctx.MapAreaVolumes.Count == 0)
+            {
+                report.Error("P2-22", "No MapAreaVolume found. Every map must have at least one " +
+                                      "MapAreaVolume defining the playable bounds (where the builder " +
+                                      "can move and the camera can pan).");
+            }
+
             // P2-16: author non-empty (soft warning)
             if (string.IsNullOrWhiteSpace(auth.author))
             {
@@ -403,6 +418,7 @@ namespace TD.Levels.Editor
             ctx.PerVolumeTiles = new Dictionary<VolumeBase, HashSet<Vector2Int>>();
             ctx.PerOwnerZoneTiles = new Dictionary<PlayerSlot, HashSet<Vector2Int>>();
             ctx.PerGoalTiles = new List<HashSet<Vector2Int>>();
+            ctx.MapAreaTiles = new HashSet<Vector2Int>();
 
             bool initializedAggregate = false;
             int aggMinX = 0, aggMinY = 0, aggMaxX = 0, aggMaxY = 0;
@@ -461,6 +477,14 @@ namespace TD.Levels.Editor
                 {
                     ctx.PerGoalTiles.Add(tiles);
                 }
+
+                // Map area: union all MapAreaVolume tiles into a single set. The map area is the
+                // union of all MapAreaVolumes, so a tile is "in the map" if ANY MapAreaVolume
+                // covers it.
+                if (v is MapAreaVolume)
+                {
+                    foreach (var t in tiles) ctx.MapAreaTiles.Add(t);
+                }
             }
 
             if (!initializedAggregate)
@@ -498,12 +522,27 @@ namespace TD.Levels.Editor
             // 2D arrays during composition; flattened to 1D in Phase 6.
             ctx.PlacementGrid2D = new PlacementState[width, height];   // defaults to Outside (0)
             ctx.WalkabilityGrid2D = new bool[width, height];           // defaults to false
+            ctx.MapAreaGrid2D = new bool[width, height];               // defaults to false
+
+            // Map-area composition: a tile is "in map" iff any MapAreaVolume covers it. We have
+            // the union pre-computed in ctx.MapAreaTiles from Phase 3.
+            foreach (var t in ctx.MapAreaTiles)
+            {
+                int gx = t.x - ctx.GridOriginTile.x;
+                int gy = t.y - ctx.GridOriginTile.y;
+                ctx.MapAreaGrid2D[gx, gy] = true;
+            }
 
             // Volume-iterating algorithm: O(total tile-coverage) rather than O(grid * volumes).
             foreach (var v in ctx.AllVolumes)
             {
                 if (!ctx.PerVolumeTiles.TryGetValue(v, out var tiles)) continue;
 
+                // MapAreaVolume contributes ONLY to the map-area grid (handled above) — not to
+                // walkability or placement. Buffer tiles (in-map but not gameplay) must remain
+                // non-walkable so enemies cannot path through them.
+                if (v is MapAreaVolume) continue;
+
                 bool isInvalid = IsInvalidValidity(v);
                 bool isPlayerZone = v is PlayerZoneVolume;
 
@@ -774,6 +813,45 @@ namespace TD.Levels.Editor
                 report.Warning("P5-11", $"Walkability grid has {components} disconnected regions. " +
                                         "Some areas of the map are unreachable from others.");
             }
+
+            // P5-12: every gameplay volume's tiles must be a subset of the map area.
+            // Coverage rule from the design spec — gameplay can't poke outside the playable map.
+            // Skipped if no MapAreaVolume exists (P2-22 already errored; this would just spam).
+            if (ctx.MapAreaTiles.Count > 0)
+            {
+                ValidateGameplayContainedInMapArea(ctx, report);
+            }
+        }
+
+        // P5-12: each gameplay volume (PlayerZone, Spawner, LeakExit, Goal) must have all its
+        // tiles inside ctx.MapAreaTiles. Reports one error per offending volume with the count of
+        // out-of-map tiles to avoid drowning the report in per-tile errors.
+        private static void ValidateGameplayContainedInMapArea(BakeContext ctx, BakeReport report)
+        {
+            foreach (var v in ctx.AllVolumes)
+            {
+                if (v is MapAreaVolume) continue; // The map area itself doesn't need to contain itself.
+                if (!ctx.PerVolumeTiles.TryGetValue(v, out var tiles)) continue;
+
+                int outsideCount = 0;
+                Vector2Int firstOutside = Vector2Int.zero;
+                foreach (var t in tiles)
+                {
+                    if (!ctx.MapAreaTiles.Contains(t))
+                    {
+                        if (outsideCount == 0) firstOutside = t;
+                        outsideCount++;
+                    }
+                }
+
+                if (outsideCount > 0)
+                {
+                    report.Error("P5-12",
+                        $"{v.GetType().Name} '{v.name}' has {outsideCount} tile(s) outside the map area " +
+                        $"(first offender: {firstOutside}). Every gameplay volume must be fully contained " +
+                        "within the union of MapAreaVolumes.");
+                }
+            }
         }
 
         private static int CountWalkableComponents(HashSet<Vector2Int> walkable)
@@ -830,6 +908,7 @@ namespace TD.Levels.Editor
             data.PlacementGrid = new PlacementState[total];
             data.WalkabilityGrid = new bool[total];
             data.OwnerGrid = new PlayerSlot[total]; // defaults to PlayerSlot.None (=0)
+            data.MapAreaGrid = new bool[total];     // defaults to false
 
             for (int x = 0; x < width; x++)
             {
@@ -838,6 +917,7 @@ namespace TD.Levels.Editor
                     int idx = y * width + x;
                     data.PlacementGrid[idx] = ctx.PlacementGrid2D[x, y];
                     data.WalkabilityGrid[idx] = ctx.WalkabilityGrid2D[x, y];
+                    data.MapAreaGrid[idx] = ctx.MapAreaGrid2D[x, y];
                 }
             }
 
@@ -1018,13 +1098,15 @@ namespace TD.Levels.Editor
             var spawners = rootTransform.GetComponentsInChildren<SpawnerVolume>(includeInactive: false);
             var leakExits = rootTransform.GetComponentsInChildren<LeakExitVolume>(includeInactive: false);
             var goals = rootTransform.GetComponentsInChildren<GoalVolume>(includeInactive: false);
+            var mapAreas = rootTransform.GetComponentsInChildren<MapAreaVolume>(includeInactive: false);
 
             ctx.AllVolumes = new System.Collections.Generic.List<VolumeBase>(
-                playerZones.Length + spawners.Length + leakExits.Length + goals.Length);
+                playerZones.Length + spawners.Length + leakExits.Length + goals.Length + mapAreas.Length);
             ctx.AllVolumes.AddRange(playerZones);
             ctx.AllVolumes.AddRange(spawners);
             ctx.AllVolumes.AddRange(leakExits);
             ctx.AllVolumes.AddRange(goals);
+            ctx.AllVolumes.AddRange(mapAreas);
 
             // Match Phase 1's canonical sort exactly. The hash routine re-orders
             // by canonical path internally, but sorting AllVolumes here keeps
@@ -1240,6 +1322,7 @@ namespace TD.Levels.Editor
             target.PlacementGrid = src.PlacementGrid;
             target.WalkabilityGrid = src.WalkabilityGrid;
             target.OwnerGrid = src.OwnerGrid;
+            target.MapAreaGrid = src.MapAreaGrid;
             target.PlayerZones = src.PlayerZones;
             target.Goals = src.Goals;
 
@@ -1272,6 +1355,7 @@ namespace TD.Levels.Editor
         public List<SpawnerVolume> SpawnerVolumes;
         public List<LeakExitVolume> LeakExitVolumes;
         public List<GoalVolume> GoalVolumes;
+        public List<MapAreaVolume> MapAreaVolumes;
 
         // Phase 2 outputs
         public HashSet<PlayerSlot> ExpectedOwners;
@@ -1281,6 +1365,7 @@ namespace TD.Levels.Editor
         public Dictionary<VolumeBase, HashSet<Vector2Int>> PerVolumeTiles;
         public Dictionary<PlayerSlot, HashSet<Vector2Int>> PerOwnerZoneTiles;
         public List<HashSet<Vector2Int>> PerGoalTiles;
+        public HashSet<Vector2Int> MapAreaTiles;
         public Vector2Int MapMinTile;
         public Vector2Int MapMaxTile;
 
@@ -1289,6 +1374,7 @@ namespace TD.Levels.Editor
         public Vector2Int GridSize;
         public PlacementState[,] PlacementGrid2D;
         public bool[,] WalkabilityGrid2D;
+        public bool[,] MapAreaGrid2D;
 
         // Phase 5 outputs
         public HashSet<PlayerSlot> GoalAdjacentZones;

Assets/_Project/Scripts/Gameplay/GoldManager.cs

@@ -1,147 +0,0 @@
-using Unity.Netcode;
-using UnityEngine;
-
-namespace TD.Gameplay
-{
-    /// <summary>
-    /// GoldManager — canonical server-authoritative template for this project.
-    ///
-    /// Every gameplay system (towers, enemies, waves, damage) should follow
-    /// the same three-beat pattern demonstrated here:
-    ///   1. State lives in NetworkVariables, which only the server can write.
-    ///   2. Clients REQUEST changes via [Rpc(SendTo.Server, ...)] methods.
-    ///      They never change state directly.
-    ///   3. The server VALIDATES the request before applying it.
-    ///      Never trust the client.
-    ///
-    /// Cosmetic-only reactions (sounds, VFX, UI popups) can use
-    /// [Rpc(SendTo.ClientsAndHost)] or [Rpc(SendTo.NotServer)] to broadcast.
-    /// </summary>
-    public class GoldManager : NetworkBehaviour
-    {
-        // --- Tunables (editable in Inspector) -----------------------------
-
-        [Tooltip("How much gold every player starts with when the game begins.")]
-        [SerializeField] private int startingGold = 100;
-
-        // --- Networked state ----------------------------------------------
-
-        // A NetworkVariable<T> automatically syncs from server to clients.
-        // readPerm = Everyone: all clients can read the current value.
-        // writePerm = Server: only the server can change it.
-        private readonly NetworkVariable<int> currentGold = new NetworkVariable<int>(
-            value: 0,
-            readPerm: NetworkVariableReadPermission.Everyone,
-            writePerm: NetworkVariableWritePermission.Server
-        );
-
-        // Public read-only accessor for other scripts (UI, tower placement).
-        public int CurrentGold => currentGold.Value;
-
-        // --- Lifecycle ----------------------------------------------------
-
-        /// <summary>
-        /// OnNetworkSpawn runs on every peer (server + all clients) when this
-        /// NetworkBehaviour becomes active on the network. Replaces Start()
-        /// for networked setup.
-        /// </summary>
-        public override void OnNetworkSpawn()
-        {
-            Debug.Log($"[GoldManager] OnNetworkSpawn ran. IsServer={IsServer}, IsClient={IsClient}, IsHost={IsHost}");
-
-            currentGold.OnValueChanged += HandleGoldChanged;
-            Debug.Log($"[GoldManager] Subscribed to OnValueChanged. Current value before init: {currentGold.Value}");
-
-            if (IsServer)
-            {
-                currentGold.Value = startingGold;
-                Debug.Log($"[GoldManager] Server initialized gold. Current value after set: {currentGold.Value}");
-            }
-        }
-
-        public override void OnNetworkDespawn()
-        {
-            // Always unsubscribe to avoid callback leaks.
-            currentGold.OnValueChanged -= HandleGoldChanged;
-        }
-
-        private void HandleGoldChanged(int previous, int current)
-        {
-            // Fires on every peer whenever the value syncs. Use Log here so
-            // you can see syncing in the Console during development.
-            Debug.Log($"[GoldManager] Gold changed: {previous} -> {current}");
-        }
-
-        // --- Public API (called by client-side code) ----------------------
-
-        /// <summary>
-        /// Client-side entry point for spending gold. Called by gameplay code
-        /// like TowerPlacement when the local player clicks "build tower."
-        ///
-        /// The actual spending happens on the server via the Rpc.
-        /// </summary>
-        public void RequestSpendGold(int amount)
-        {
-            SpendGoldRpc(amount);
-        }
-
-        /// <summary>
-        /// Server-side entry point for awarding gold (wave clear, enemy kill).
-        /// Not Rpc-wrapped — this is called directly by server game logic in
-        /// response to server-authoritative events.
-        /// </summary>
-        public void AwardGold(int amount)
-        {
-            if (!IsServer)
-            {
-                Debug.LogError("[GoldManager] AwardGold called on a client! " +
-                               "Only server code should call this directly.");
-                return;
-            }
-
-            if (amount <= 0) return;
-            currentGold.Value += amount;
-        }
-
-        // --- Server-side RPC ----------------------------------------------
-
-        // [Rpc(SendTo.Server, ...)] means: a client calls this locally, but
-        // NGO routes the call and executes the method on the server.
-        //
-        // RequireOwnership = false lets any client call it (correct for a
-        // shared GoldManager). For per-player NetworkObjects you'd usually
-        // leave the default ownership requirement in place.
-        //
-        // Naming convention: methods with [Rpc] attributes must end with "Rpc".
-        // The source generator relies on this suffix.
-        [Rpc(SendTo.Server, RequireOwnership = false)]
-        private void SpendGoldRpc(int amount, RpcParams rpcParams = default)
-        {
-            // This method body runs on the server only.
-            // Validate everything — do not trust the client.
-
-            // Validation 1: reject non-positive amounts. A negative amount
-            // would let a malicious client GAIN gold if we just subtracted.
-            if (amount <= 0)
-            {
-                Debug.LogWarning($"[GoldManager] Rejected spend of {amount} " +
-                                 $"from client {rpcParams.Receive.SenderClientId}: " +
-                                 $"amount must be positive.");
-                return;
-            }
-
-            // Validation 2: can't spend more than current balance.
-            if (currentGold.Value < amount)
-            {
-                Debug.LogWarning($"[GoldManager] Rejected spend of {amount} " +
-                                 $"from client {rpcParams.Receive.SenderClientId}: " +
-                                 $"insufficient funds (have {currentGold.Value}).");
-                return;
-            }
-
-            // Server applies the change. NetworkVariable syncs to clients
-            // automatically at the next network tick.
-            currentGold.Value -= amount;
-        }
-    }
-}

Assets/_Project/Scripts/Gameplay/GoldManager.cs.meta

@@ -1,2 +0,0 @@
-fileFormatVersion: 2
-guid: d44ebdd0b2fc4144c8f8a181a714b738

Assets/_Project/Scripts/Gameplay/LevelLoader.cs

@@ -264,6 +264,23 @@ namespace TD.Gameplay
             return x >= 0 && x < level.GridSize.x && y >= 0 && y < level.GridSize.y;
         }
 
+        /// <summary>
+        /// True if <paramref name="tile"/> is part of the playable map area (inside any
+        /// MapAreaVolume at bake time). Returns false for out-of-bounds tiles and for in-bounds
+        /// "void" tiles outside the map area. This is the outermost gate — gameplay queries
+        /// (IsWalkable, GetPlacement, GetOwner) are only meaningful where IsInMap is true.
+        ///
+        /// Use this for: builder movement clamp, camera pan clamp, minimap rendering bounds.
+        /// </summary>
+        public bool IsInMap(Vector2Int tile)
+        {
+            if (!TryFlatIndex(tile, out int idx)) return false;
+            // Defensive: existing maps that haven't been re-baked since MapAreaGrid was added
+            // will have a null array. Treat that as "not in map" so callers don't false-positive.
+            if (level.MapAreaGrid == null || level.MapAreaGrid.Length == 0) return false;
+            return level.MapAreaGrid[idx];
+        }
+
         /// <summary>
         /// True if <paramref name="tile"/> is currently walkable. Returns
         /// false for out-of-bounds tiles. Reflects the runtime walkability

Assets/_Project/Scripts/Gameplay/PlayerGoldManager.cs

@@ -0,0 +1,178 @@
+using System.Collections.Generic;
+using Unity.Netcode;
+using UnityEngine;
+
+namespace TD.Gameplay
+{
+    /// <summary>
+    /// Per-player gold pool. One instance is spawned per connected client (via
+    /// <see cref="NetworkManager.PlayerPrefab"/>) and owned by that client.
+    ///
+    /// Replaces the earlier singleton-style GoldManager. Same server-authoritative
+    /// pattern (NetworkVariable + server-validated Rpc), but every player has their
+    /// own pool instead of sharing one.
+    ///
+    /// Three-beat pattern (unchanged from the original template):
+    ///   1. State lives in NetworkVariables (server-only writes).
+    ///   2. The owning client REQUESTS spends via a server-targeted Rpc.
+    ///   3. The server VALIDATES before applying.
+    /// </summary>
+    /// <remarks>
+    /// Lookup ergonomics: each instance registers itself in a static dictionary
+    /// keyed by OwnerClientId during OnNetworkSpawn and removes itself during
+    /// OnNetworkDespawn. Server code that needs to award gold to a specific
+    /// player can call <see cref="GetForClient(ulong)"/>.
+    ///
+    /// This component is expected to live on the Player Prefab assigned to
+    /// NetworkManager. NGO handles spawn-on-connect and ownership assignment
+    /// automatically.
+    /// </remarks>
+    public class PlayerGoldManager : NetworkBehaviour
+    {
+        // --- Static registry ---------------------------------------------
+
+        // Keyed by OwnerClientId. Populated on every peer when an instance
+        // spawns; the same client can be looked up on the server (for awards)
+        // and on clients (for UI). Kept private — access goes through GetForClient.
+        private static readonly Dictionary<ulong, PlayerGoldManager> s_byClientId
+            = new Dictionary<ulong, PlayerGoldManager>();
+
+        /// <summary>
+        /// Returns the PlayerGoldManager owned by the given client, or null if
+        /// none is currently spawned. Safe to call on server or client.
+        /// </summary>
+        public static PlayerGoldManager GetForClient(ulong clientId)
+        {
+            s_byClientId.TryGetValue(clientId, out var manager);
+            return manager;
+        }
+
+        /// <summary>
+        /// Convenience: the local client's own gold manager. Returns null on a
+        /// dedicated server or before the local player has spawned.
+        /// </summary>
+        public static PlayerGoldManager Local
+        {
+            get
+            {
+                var nm = NetworkManager.Singleton;
+                if (nm == null || !nm.IsClient) return null;
+                return GetForClient(nm.LocalClientId);
+            }
+        }
+
+        // --- Tunables ----------------------------------------------------
+
+        [Tooltip("How much gold this player starts with when the match begins.")]
+        [SerializeField] private int startingGold = 100;
+
+        // --- Networked state ---------------------------------------------
+
+        // readPerm = Everyone so any client can read any other player's gold
+        // (needed for scoreboard / opponent UI). writePerm = Server keeps
+        // authority where it belongs.
+        private readonly NetworkVariable<int> currentGold = new NetworkVariable<int>(
+            value: 0,
+            readPerm: NetworkVariableReadPermission.Everyone,
+            writePerm: NetworkVariableWritePermission.Server
+        );
+
+        public int CurrentGold => currentGold.Value;
+
+        // --- Lifecycle ---------------------------------------------------
+
+        public override void OnNetworkSpawn()
+        {
+            Debug.Log($"[PlayerGoldManager] OnNetworkSpawn. OwnerClientId={OwnerClientId}, " +
+                      $"IsOwner={IsOwner}, IsServer={IsServer}");
+
+            currentGold.OnValueChanged += HandleGoldChanged;
+            s_byClientId[OwnerClientId] = this;
+
+            if (IsServer)
+            {
+                currentGold.Value = startingGold;
+            }
+        }
+
+        public override void OnNetworkDespawn()
+        {
+            currentGold.OnValueChanged -= HandleGoldChanged;
+
+            // Only remove if the entry still points to this instance — guards
+            // against the (unlikely) case where a new instance for the same
+            // client has already overwritten the slot.
+            if (s_byClientId.TryGetValue(OwnerClientId, out var registered) && registered == this)
+            {
+                s_byClientId.Remove(OwnerClientId);
+            }
+        }
+
+        private void HandleGoldChanged(int previous, int current)
+        {
+            Debug.Log($"[PlayerGoldManager] Client {OwnerClientId} gold: {previous} -> {current}");
+        }
+
+        // --- Public API --------------------------------------------------
+
+        /// <summary>
+        /// Owning-client entry point for spending gold. Sends a server Rpc;
+        /// the server validates and applies. Calling this on a non-owning
+        /// client will be rejected by the Rpc's Owner permission.
+        /// </summary>
+        public void RequestSpendGold(int amount)
+        {
+            SpendGoldRpc(amount);
+        }
+
+        /// <summary>
+        /// Server-side entry point for awarding gold (wave clear, enemy kill).
+        /// Direct call — not Rpc-wrapped — because awards always originate
+        /// from server-authoritative game events.
+        /// </summary>
+        public void AwardGold(int amount)
+        {
+            if (!IsServer)
+            {
+                Debug.LogError("[PlayerGoldManager] AwardGold called on a client. " +
+                               "Only server code should call this directly.");
+                return;
+            }
+
+            if (amount <= 0) return;
+            currentGold.Value += amount;
+        }
+
+        // --- Server-side Rpc ---------------------------------------------
+
+        // InvokePermission = Owner: only the client that owns this NetworkObject
+        // can invoke the Rpc. NGO will reject calls from anyone else, so a
+        // malicious client can't spend another player's gold.
+        //
+        // This replaces the old "RequireOwnership = false" + the implicit
+        // shared-pool semantics. The deprecation warning is gone.
+        [Rpc(SendTo.Server, InvokePermission = RpcInvokePermission.Owner)]
+        private void SpendGoldRpc(int amount, RpcParams rpcParams = default)
+        {
+            // Validation 1: positive amount.
+            if (amount <= 0)
+            {
+                Debug.LogWarning($"[PlayerGoldManager] Rejected spend of {amount} " +
+                                 $"from client {rpcParams.Receive.SenderClientId}: " +
+                                 $"amount must be positive.");
+                return;
+            }
+
+            // Validation 2: sufficient funds.
+            if (currentGold.Value < amount)
+            {
+                Debug.LogWarning($"[PlayerGoldManager] Rejected spend of {amount} " +
+                                 $"from client {rpcParams.Receive.SenderClientId}: " +
+                                 $"insufficient funds (have {currentGold.Value}).");
+                return;
+            }
+
+            currentGold.Value -= amount;
+        }
+    }
+}

Assets/_Project/Scripts/Gameplay/PlayerGoldManager.cs.meta

@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 6b9796562d7cc274f832657f21a61cce