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

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
         // -------------------------------------------------------------------
@@ -242,4 +247,4 @@ namespace TD.Levels
             Gizmos.color = prev;
         }
     }
-}
+}

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).
         // -------------------------------------------------------------------
@@ -141,4 +148,4 @@ namespace TD.Levels
         [Tooltip("Full tile coverage of the goal volume.")]
         public Vector2Int[] TileArea;
     }
-}
+}

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

@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: bacb3662546735544bc6c56b5bf5830a