Also populate chunks with entities when chunks are being generated.

HexGrid.cs

@@ -6,31 +6,33 @@ using AxialCoordDirectionPair = System.Tuple<Godot.Vector2, Godot.Vector3>;
 
 public class HexGrid : Resource
 {
-    private Vector2 _baseHexSize = new(1, Mathf.Sqrt(3) / 2);
+    private readonly Vector2 _baseHexSize = new(1, Mathf.Sqrt(3) / 2);
-    private Vector2 _hexSize = new(1, Mathf.Sqrt(3) / 2);
+    private Rect2 _boundsAxialCoords;
     private Vector2 _hexScale = new(1, 1);
+    private Vector2 _hexSize = new(1, Mathf.Sqrt(3) / 2);
     private Transform2D _hexTransform;
     private Transform2D _hexTransformInv;
-    private HexCell _minCoords = new();
     private HexCell _maxCoords = new();
-    private Rect2 _boundsAxialCoords;
+    private HexCell _minCoords = new();
+
+    public Dictionary<(Vector2, Vector3), float> Barriers = new();
+    public int FindPathCheckedCellCount;
 
     public Dictionary<Vector2, float> Obstacles = new();
 
-    public Dictionary<(Vector2, Vector3), float> Barriers = new();
-
 
     public float PathCostDefault = 1;
-    public int FindPathCheckedCellCount;
 
-    public Vector2 HexSize
+    public HexGrid()
     {
-        get { return _hexSize; }
+        HexScale = new Vector2(1, 1);
     }
 
+    public Vector2 HexSize => _hexSize;
+
     public Vector2 HexScale
     {
-        get { return _hexScale; }
+        get => _hexScale;
         set
         {
             _hexScale = value;
@@ -45,11 +47,6 @@ public class HexGrid : Resource
         }
     }
 
-    public HexGrid()
-    {
-        HexScale = new Vector2(1, 1);
-    }
-
     public Vector2 GetHexCenter(HexCell cell)
     {
         return _hexTransform * cell.AxialCoords;
@@ -57,21 +54,29 @@ public class HexGrid : Resource
 
     public Vector2 GetHexCenterFromOffset(Vector2 offsetCoord)
     {
-        HexCell cell = new HexCell();
+        var cell = new HexCell();
         cell.OffsetCoords = offsetCoord;
         return GetHexCenter(cell);
     }
 
+    public Vector3 GetHexCenterVec3FromOffset(Vector2 offsetCoord)
+    {
+        var cell = new HexCell();
+        cell.OffsetCoords = offsetCoord;
+        var hexCenter = GetHexCenter(cell);
+        return new Vector3(hexCenter.x, 0, hexCenter.y);
+    }
+
     public HexCell GetHexAtOffset(Vector2 offsetCoord)
     {
-        HexCell cell = new HexCell();
+        var cell = new HexCell();
         cell.OffsetCoords = offsetCoord;
         return cell;
     }
 
     public HexCell GetHexAt(Vector2 planeCoord)
     {
-        HexCell result = new HexCell(_hexTransformInv * planeCoord);
+        var result = new HexCell(_hexTransformInv * planeCoord);
         return result;
     }
 
@@ -85,12 +90,12 @@ public class HexGrid : Resource
         _minCoords = minCell;
         _maxCoords = maxCell;
         _boundsAxialCoords = new Rect2(_minCoords.AxialCoords,
-            (_maxCoords.AxialCoords - _minCoords.AxialCoords) + Vector2.One);
+            _maxCoords.AxialCoords - _minCoords.AxialCoords + Vector2.One);
     }
 
     public void SetBounds(HexCell center, int size)
     {
-        Vector2 centerOffset = center.OffsetCoords;
+        var centerOffset = center.OffsetCoords;
         SetBounds(GetHexAtOffset(centerOffset - Vector2.One * size / 2),
             GetHexAtOffset(centerOffset + Vector2.One * size / 2));
     }
@@ -123,10 +128,7 @@ public class HexGrid : Resource
 
     public void RemoveBarrier(HexCell cell, Vector3 directionCube)
     {
-        if (Barriers.ContainsKey((cell.AxialCoords, directionCube)))
+        if (Barriers.ContainsKey((cell.AxialCoords, directionCube))) Barriers.Remove((cell.AxialCoords, directionCube));
-        {
-            Barriers.Remove((cell.AxialCoords, directionCube));
-        }
     }
 
     public float GetHexCost(HexCell cell)
@@ -136,10 +138,7 @@ public class HexGrid : Resource
 
     public float GetHexCost(Vector2 axialCoords)
     {
-        if (!_boundsAxialCoords.HasPoint(axialCoords))
+        if (!_boundsAxialCoords.HasPoint(axialCoords)) return 0;
-        {
-            return 0;
-        }
 
         float value;
         return Obstacles.TryGetValue(axialCoords, out value) ? value : PathCostDefault;
@@ -147,29 +146,20 @@ public class HexGrid : Resource
 
     public float GetMoveCost(Vector2 axialCoords, Vector3 directionCube)
     {
-        HexCell startCell = new HexCell(axialCoords);
+        var startCell = new HexCell(axialCoords);
-        HexCell targetCell = new HexCell(startCell.CubeCoords + directionCube);
+        var targetCell = new HexCell(startCell.CubeCoords + directionCube);
 
-        float cost = GetHexCost(axialCoords);
+        var cost = GetHexCost(axialCoords);
-        if (cost == 0)
+        if (cost == 0) return 0;
-        {
-            return 0;
-        }
 
         cost = GetHexCost(targetCell.AxialCoords);
-        if (cost == 0)
+        if (cost == 0) return 0;
-        {
-            return 0;
-        }
 
         float barrierCost;
         if (Barriers.ContainsKey((axialCoords, directionCube)))
         {
             barrierCost = Barriers[(axialCoords, directionCube)];
-            if (barrierCost == 0)
+            if (barrierCost == 0) return 0;
-            {
-                return 0;
-            }
 
             cost += barrierCost;
         }
@@ -177,10 +167,7 @@ public class HexGrid : Resource
         if (Barriers.ContainsKey((targetCell.AxialCoords, -directionCube)))
         {
             barrierCost = Barriers[(targetCell.AxialCoords, -directionCube)];
-            if (barrierCost == 0)
+            if (barrierCost == 0) return 0;
-            {
-                return 0;
-            }
 
             cost += barrierCost;
         }
@@ -193,30 +180,28 @@ public class HexGrid : Resource
     {
         if (GetHexCost(toCell) == 0)
         {
-            HexCell[] line = fromCell.LineTo(toCell);
+            var line = fromCell.LineTo(toCell);
 
-            foreach (int i in Enumerable.Range(1, line.Length))
+            foreach (var i in Enumerable.Range(1, line.Length))
-            {
                 if (GetHexCost(line[i]) == 0)
                 {
                     toCell = line[i - 1];
                     break;
                 }
         }
-        }
 
         return toCell;
     }
 
     public List<HexCell> FindPath(HexCell startHex, HexCell goalHex)
     {
-        Vector2 goalAxialCoords = goalHex.AxialCoords;
+        var goalAxialCoords = goalHex.AxialCoords;
 
-        SimplePriorityQueue<Vector2, float> frontier = new SimplePriorityQueue<Vector2, float>();
+        var frontier = new SimplePriorityQueue<Vector2, float>();
         frontier.Enqueue(startHex.AxialCoords, 0);
-        Dictionary<Vector2, Vector2> cameFrom =
+        var cameFrom =
             new Dictionary<Vector2, Vector2>();
-        Dictionary<Vector2, float> costSoFar =
+        var costSoFar =
             new Dictionary<Vector2, float>();
 
         cameFrom.Add(startHex.AxialCoords, startHex.AxialCoords);
@@ -227,20 +212,17 @@ public class HexGrid : Resource
         while (frontier.Any())
         {
             FindPathCheckedCellCount++;
-            HexCell currentHex = new HexCell(frontier.Dequeue());
+            var currentHex = new HexCell(frontier.Dequeue());
-            Vector2 currentAxial = currentHex.AxialCoords;
+            var currentAxial = currentHex.AxialCoords;
 
-            if (currentHex == goalHex)
+            if (currentHex == goalHex) break;
+
+            foreach (var nextHex in currentHex.GetAllAdjacent())
             {
-                break;
+                var nextAxial = nextHex.AxialCoords;
-            }
+                var nextCost = GetMoveCost(currentAxial, new HexCell(nextAxial - currentHex.AxialCoords).CubeCoords);
 
-            foreach (HexCell nextHex in currentHex.GetAllAdjacent())
+                if (nextHex == goalHex && GetHexCost(nextAxial) == 0)
-            {
-                Vector2 nextAxial = nextHex.AxialCoords;
-                float nextCost = GetMoveCost(currentAxial, new HexCell(nextAxial - currentHex.AxialCoords).CubeCoords);
-
-                if ((nextHex == goalHex) && (GetHexCost(nextAxial) == 0))
                 {
                     // Goal ist an obstacle
                     cameFrom[nextHex.AxialCoords] = currentHex.AxialCoords;
@@ -248,16 +230,13 @@ public class HexGrid : Resource
                     break;
                 }
 
-                if (nextCost == 0)
+                if (nextCost == 0) continue;
-                {
-                    continue;
-                }
 
                 nextCost += costSoFar[currentHex.AxialCoords];
                 if (!costSoFar.ContainsKey(nextHex.AxialCoords) || nextCost < costSoFar[nextHex.AxialCoords])
                 {
                     costSoFar[nextHex.AxialCoords] = nextCost;
-                    float priority = nextCost + nextHex.DistanceTo(goalHex);
+                    var priority = nextCost + nextHex.DistanceTo(goalHex);
 
                     frontier.Enqueue(nextHex.AxialCoords, priority);
                     cameFrom[nextHex.AxialCoords] = currentHex.AxialCoords;
@@ -267,19 +246,16 @@ public class HexGrid : Resource
 
         // GD.Print("Checked Cell Count: " + FindPathCheckedCellCount);
 
-        List<HexCell> result = new List<HexCell>();
+        var result = new List<HexCell>();
         if (!cameFrom.ContainsKey(goalHex.AxialCoords))
         {
             GD.Print("Failed to find path from " + startHex + " to " + goalHex);
             return result;
         }
 
-        if (GetHexCost(goalAxialCoords) != 0)
+        if (GetHexCost(goalAxialCoords) != 0) result.Add(goalHex);
-        {
-            result.Add(goalHex);
-        }
 
-        HexCell pathHex = goalHex;
+        var pathHex = goalHex;
         while (pathHex != startHex)
         {
             pathHex = new HexCell(cameFrom[pathHex.AxialCoords]);
@@ -292,20 +268,20 @@ public class HexGrid : Resource
 
     public List<HexCell> GetCellsForLine(Vector2 fromPlane, Vector2 toPlane)
     {
-        List<HexCell> result = new List<HexCell>();
+        var result = new List<HexCell>();
 
-        float distance = (toPlane - fromPlane).Length();
+        var distance = (toPlane - fromPlane).Length();
-        Vector2 direction = (toPlane - fromPlane) / distance;
+        var direction = (toPlane - fromPlane) / distance;
 
-        Vector2 currentPointPlane = fromPlane;
+        var currentPointPlane = fromPlane;
-        HexCell currentCell = GetHexAt(currentPointPlane);
+        var currentCell = GetHexAt(currentPointPlane);
         float currentDistance = 0;
 
         do
         {
             result.Add(currentCell);
             GetHexCenter(currentCell);
-            Vector2 currentPointLocal = currentPointPlane - GetHexCenter(currentCell);
+            var currentPointLocal = currentPointPlane - GetHexCenter(currentCell);
 
             int neighbourIndex;
             float boundaryPlaneDistance;

export_presets.cfg

@@ -2,7 +2,7 @@
 
 name="PirateGame3D"
 platform="Android"
-runnable=true
+runnable=false
 custom_features=""
 export_filter="all_resources"
 include_filter=""
@@ -15,7 +15,7 @@ script_encryption_key=""
 
 custom_template/debug=""
 custom_template/release=""
-custom_build/use_custom_build=true
+custom_build/use_custom_build=false
 custom_build/export_format=0
 custom_build/min_sdk=""
 custom_build/target_sdk=""

project.godot

@@ -132,5 +132,7 @@ common/enable_pause_aware_picking=true
 
 [rendering]
 
-quality/shadows/filter_mode.mobile=1
+quality/directional_shadow/size.mobile=512
+quality/shadow_atlas/size.mobile=1024
+quality/subsurface_scattering/quality=0
 environment/default_environment="res://default_env.tres"

scenes/Game.tscn

@@ -1,4 +1,4 @@
-[gd_scene load_steps=19 format=2]
+[gd_scene load_steps=24 format=2]
 
 [ext_resource path="res://scenes/StreamContainer.tscn" type="PackedScene" id=1]
 [ext_resource path="res://entities/Player.tscn" type="PackedScene" id=2]
@@ -15,6 +15,11 @@
 [ext_resource path="res://assets/Environment/HexTileMesh.tres" type="CylinderMesh" id=13]
 [ext_resource path="res://entities/Axe.tscn" type="PackedScene" id=14]
 [ext_resource path="res://systems/InteractionSystem.cs" type="Script" id=15]
+[ext_resource path="res://entities/rockA.tscn" type="PackedScene" id=16]
+[ext_resource path="res://entities/rockC.tscn" type="PackedScene" id=17]
+[ext_resource path="res://entities/rockB.tscn" type="PackedScene" id=18]
+[ext_resource path="res://entities/Tree.tscn" type="PackedScene" id=19]
+[ext_resource path="res://assets/Environment/grassLarge.tscn" type="PackedScene" id=20]
 
 [sub_resource type="Animation" id=25]
 resource_name = "FlashLabel"
@@ -35,7 +40,9 @@ tracks/0/keys = {
 [sub_resource type="AnimationNodeStateMachinePlayback" id=26]
 
 [sub_resource type="MultiMesh" id=27]
+color_format = 1
 transform_format = 1
+custom_data_format = 1
 visible_instance_count = 0
 mesh = ExtResource( 13 )
 
@@ -351,9 +358,6 @@ script = ExtResource( 15 )
 [node name="Player" parent="." instance=ExtResource( 2 )]
 TileWorldNode = NodePath("../TileWorld")
 
-[node name="Skeleton" parent="Player/Geometry/Armature" index="0"]
-bones/4/bound_children = [  ]
-
 [node name="ToolAttachement" parent="Player/Geometry/Armature/Skeleton" index="5"]
 transform = Transform( 1, 8.68458e-08, -1.04308e-07, 1.74623e-07, -1, -1.30385e-07, 1.41561e-07, 1.50874e-07, -1, -0.72, 0.45, 3.28113e-08 )
 
@@ -382,6 +386,26 @@ World = NodePath("..")
 transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, -2.5, 0 )
 multimesh = SubResource( 27 )
 
+[node name="Assets" type="Spatial" parent="World"]
+transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, -5, 0 )
+visible = false
+
+[node name="Rocks" type="Spatial" parent="World/Assets"]
+
+[node name="rockA" parent="World/Assets/Rocks" instance=ExtResource( 16 )]
+
+[node name="rockB" parent="World/Assets/Rocks" instance=ExtResource( 18 )]
+
+[node name="rockC" parent="World/Assets/Rocks" instance=ExtResource( 17 )]
+
+[node name="Grass" type="Spatial" parent="World/Assets"]
+
+[node name="grassLarge" parent="World/Assets/Grass" instance=ExtResource( 20 )]
+
+[node name="Trees" type="Spatial" parent="World/Assets"]
+
+[node name="tree" parent="World/Assets/Trees" instance=ExtResource( 19 )]
+
 [connection signal="toggled" from="DebugContainer/DebugStatsContainer/DebugMenuButton" to="DebugContainer/DebugStatsContainer" method="_on_DebugMenuButton_toggled"]
 [connection signal="value_changed" from="Generator Container/WorldGeneratorContainer/HBoxContainer/WorldSizeSlider" to="Generator Container/WorldGeneratorContainer" method="_on_HSlider_value_changed"]
 [connection signal="toggled" from="Generator Container/WorldGeneratorContainer/ShowTexturesCheckButton" to="Generator Container/WorldGeneratorContainer" method="_on_ShowTexturesCheckButton_toggled"]

scenes/TileInstanceManager.cs

@@ -142,6 +142,7 @@ public class TileInstanceManager : Spatial
             foreach (var j in Enumerable.Range(0, chunkSize))
             {
                 var tile3D = (HexTile3D)_hexTile3DScene.Instance();
+                tile3D.Cell.OffsetCoords = new Vector2(chunkIndex * global::World.ChunkSize + new Vector2(i, j));
 
                 var tileTransform = Transform.Identity;
                 var centerPlaneCoord = HexGrid.GetHexCenterFromOffset(new Vector2(i, j));
@@ -181,7 +182,7 @@ public class TileInstanceManager : Spatial
 
                 var tileOrientation = new Basis(Vector3.Up, 90f * Mathf.Pi / 180f);
 
-                GD.Print("Updating transforms for instances of chunk " + value);
+                GD.Print("Updating transforms for instances of chunk " + value + " origin: " + chunkTransform.origin);
 
                 foreach (var i in Enumerable.Range(0, TileInstanceIndices.Count))
                 {
@@ -190,6 +191,7 @@ public class TileInstanceManager : Spatial
 
                     var tilePlaneCoord =
                         HexGrid.GetHexCenterFromOffset(new Vector2(column, row));
+
                     _multiMeshInstance.Multimesh.SetInstanceTransform(TileInstanceIndices[i],
                         new Transform(tileOrientation,
                             chunkTransform.origin + new Vector3(tilePlaneCoord.x, 0, tilePlaneCoord.y)));

scenes/World.cs

@@ -17,16 +17,18 @@ public class World : Spatial
     }
 
     // constants
-    public const int ChunkSize = 16;
+    public const int ChunkSize = 10;
     public const int NumChunkRows = 3;
     public const int NumChunkColumns = NumChunkRows;
+    private static readonly Color RockColor = new(0.5f, 0.5f, 0.4f);
+    private static readonly Color GrassColor = new(0, 0.4f, 0);
+    private static readonly Color DarkGrassColor = new(0.05882353f, 0.5411765f, 0.05882353f);
+    private static readonly Color LightWaterColor = new(0.05882353f, 0.05882353f, 0.8627451f);
+
     private readonly List<Vector2> _addedChunkIndices = new();
     private readonly Godot.Collections.Dictionary<Vector2, WorldChunk> _cachedWorldChunks;
-
     private readonly Image _heightmapImage = new();
-
     private readonly List<Vector2> _removedChunkIndices = new();
-
     private readonly Image _tileTypeMapImage = new();
 
     // referenced scenes
@@ -39,10 +41,13 @@ public class World : Spatial
 
     // other members
     private Vector2 _centerPlaneCoord;
+    private Array<Spatial> _grassAssets;
     private ImageTexture _heightmapTexture;
 
     private OpenSimplexNoise _noiseGenerator = new();
+    private Array<Spatial> _rockAssets;
     private TileInstanceManager _tileInstanceManager;
+    private Array<Spatial> _treeAssets;
     private ImageTexture _viewTileTypeTexture;
     public Vector2 CenterChunkIndex = Vector2.Zero;
     public Spatial Chunks;
@@ -71,6 +76,17 @@ public class World : Spatial
 
         InitNoiseGenerator();
 
+        GetNode<Spatial>("Assets").Visible = false;
+
+        _rockAssets = new Array<Spatial>();
+        foreach (Spatial asset in GetNode<Node>("Assets/Rocks").GetChildren()) _rockAssets.Add(asset);
+
+        _grassAssets = new Array<Spatial>();
+        foreach (Spatial asset in GetNode<Node>("Assets/Grass").GetChildren()) _grassAssets.Add(asset);
+
+        _treeAssets = new Array<Spatial>();
+        foreach (Spatial asset in GetNode<Node>("Assets/Trees").GetChildren()) _treeAssets.Add(asset);
+
         SetCenterPlaneCoord(Vector2.Zero);
     }
 
@@ -129,6 +145,78 @@ public class World : Spatial
         return result;
     }
 
+
+    private bool IsColorEqualApprox(Color colorA, Color colorB)
+    {
+        var colorDifference = new Vector3(colorA.r - colorB.r, colorA.g - colorB.g, colorA.b - colorB.b);
+        return colorDifference.LengthSquared() < 0.1 * 0.1;
+    }
+
+    private Spatial SelectAsset(Vector2 offsetCoord, Array<Spatial> assets, Random randomGenerator, double probability)
+    {
+        if (randomGenerator.NextDouble() < 1.0 - probability) return null;
+
+        var assetIndex = randomGenerator.Next(assets.Count);
+        var assetInstance = (Spatial)assets[assetIndex].Duplicate();
+        var assetTransform = Transform.Identity;
+        assetTransform.origin = HexGrid.GetHexCenterVec3FromOffset(offsetCoord);
+        // TODO: assetTransform.origin.y = GetHeightAtOffset(offsetCoord);
+        assetTransform.origin.y = 0;
+        assetTransform.basis =
+            assetTransform.basis.Rotated(Vector3.Up, (float)(randomGenerator.NextDouble() * Mathf.Pi * 2));
+        assetInstance.Transform = assetTransform;
+
+        return assetInstance;
+    }
+
+    private void PopulateChunk(WorldChunk chunk)
+    {
+        var environmentRandom = new Random(Seed);
+
+        var tileTypeImage = chunk.TileTypeOffscreenViewport.GetTexture().GetData();
+        tileTypeImage.Lock();
+
+        foreach (var textureCoordU in Enumerable.Range(0, chunk.Size))
+        foreach (var textureCoordV in Enumerable.Range(0, chunk.Size))
+        {
+            var colorValue = tileTypeImage.GetPixel(textureCoordU, textureCoordV);
+            var textureCoord = new Vector2(textureCoordU, textureCoordV);
+            var offsetCoord = chunk.ChunkIndex * ChunkSize + textureCoord;
+
+            if (IsColorEqualApprox(colorValue, RockColor))
+            {
+                var rockAsset = SelectAsset(offsetCoord, _rockAssets, environmentRandom, 0.15);
+                if (rockAsset != null) chunk.Entities.AddChild(rockAsset);
+                // TODO: MarkCellUnwalkable(cell);
+            }
+            else if (IsColorEqualApprox(colorValue, GrassColor) || IsColorEqualApprox(colorValue, DarkGrassColor))
+            {
+                var grassAsset = SelectAsset(offsetCoord, _grassAssets, environmentRandom, 0.15);
+                if (grassAsset != null) chunk.Entities.AddChild(grassAsset);
+
+                var treeAsset = SelectAsset(offsetCoord, _treeAssets, environmentRandom, 0.05);
+                if (treeAsset != null) chunk.Entities.AddChild(treeAsset);
+                // TODO: MarkCellUnwalkable(cell);
+                //                else if (environmentRandom.NextDouble() < 0.01)
+//                {
+//                    var chestAsset = (Chest)_chestScene.Instance();
+//                    var assetTransform = Transform.Identity;
+//                    assetTransform.origin = GetHexCenterFromOffset(offsetCoord);
+//                    assetTransform.origin.y = GetHeightAtOffset(offsetCoord);
+//                    chestAsset.Transform = assetTransform;
+//                    Entities.AddChild(chestAsset);
+//                    MarkCellUnwalkable(cell);
+//                }
+            }
+//            else if (IsColorWater(colorValue))
+//            {
+//                MarkCellUnwalkable(cell);
+//            }
+        }
+
+        tileTypeImage.Unlock();
+    }
+
     public void UpdateCenterChunkFromPlaneCoord(Vector2 planeCoord)
     {
         if (State != GenerationState.Done)
@@ -338,6 +426,8 @@ public class World : Spatial
         else if (State == GenerationState.Objects)
         {
             // generate objects
+            foreach (var chunkIndex in _addedChunkIndices) PopulateChunk(_cachedWorldChunks[chunkIndex]);
+
             State = GenerationState.Done;
         }
     }

scenes/WorldChunk.cs

@@ -4,16 +4,16 @@ using Godot;
 
 public class WorldChunk : Spatial
 {
+    private readonly SpatialMaterial _rectMaterial = new();
     private Sprite _heightmapSprite;
     private TextureRect _heightmapTextureRect;
     private Sprite _noiseMask;
 
     private Sprite _noiseSprite;
-
-    private readonly SpatialMaterial _rectMaterial = new();
     private bool _showTextureOverlay;
     [Export] public Vector2 ChunkIndex;
     public Color DebugColor = Colors.White;
+    [Export] public Spatial Entities;
     [Export] public Texture HeightMap;
     public int HeightMapFrameCount;
 
@@ -91,6 +91,9 @@ public class WorldChunk : Spatial
         TileTypeOffscreenViewport.Size = Vector2.One * Size;
         Debug.Assert(TileTypeOffscreenViewport != null);
 
+        Entities = (Spatial)FindNode("Entities");
+        Debug.Assert(Entities != null);
+
         SetSize(World.ChunkSize);
     }