Noise based map generation, movement component uses height.

GodotComponentTest.csproj

@@ -6,6 +6,8 @@
     <!-- See https://www.reddit.com/r/godot/comments/l0naqg/comment/gjwfspm/ -->
     <!-- And https://github.com/godotengine/godot/issues/42271#issuecomment-751423827 -->
 		<CopyLocalLockFileAssemblies>true</CopyLocalLockFileAssemblies>
+
+		<DefaultItemExcludes>$(DefaultItemExcludes);script_templates/*</DefaultItemExcludes>
 	</PropertyGroup>
 
 	<ItemGroup>

HexCell.cs

@@ -16,7 +16,10 @@ public class HexCell : Resource
     public static readonly Array DIR_ALL = new Array()
         { DIR_N, DIR_NE, DIR_SE, DIR_S, DIR_SW, DIR_NW };
 
-    public HexCell() { }
+    public HexCell()
+    {
+    }
+
     public HexCell(float cubeX, float cubeY, float cubeZ)
     {
         CubeCoords = RoundCoords(new Vector3(cubeX, cubeY, cubeZ));
@@ -43,18 +46,17 @@ public class HexCell : Resource
     }
 
     private Vector3 _cubeCoords;
+
     public Vector3 CubeCoords
     {
-        get
+        get { return _cubeCoords; }
-        {
-            return _cubeCoords;
-        }
         set
         {
             if (Mathf.Abs(value.x + value.y + value.z) > 0.0001)
             {
                 GD.Print("Warning: Invalid cube coordinates for hex (x + y + z != 0): ", value.ToString());
             }
+
             _cubeCoords = RoundCoords(value);
         }
     }
@@ -63,10 +65,7 @@ public class HexCell : Resource
     {
         get => new Vector2(CubeCoords.x, CubeCoords.y);
 
-        set
+        set { CubeCoords = AxialToCubeCoords(value); }
-        {
-            CubeCoords = AxialToCubeCoords(value);
-        }
     }
 
     public Vector2 OffsetCoords

HexGrid.cs

@@ -13,18 +13,16 @@ public class HexGrid : Resource
     {
         get { return _hexSize; }
     }
+
     public Vector2 HexScale
     {
-        get
+        get { return _hexScale; }
-        {
-            return _hexScale;
-        }
         set
         {
             _hexScale = value;
             _hexSize = _baseHexSize * _hexScale;
             _hexTransform = new Transform2D(
-                new Vector2(_hexSize.x * 3/4, -_hexSize.y / 2),
+                new Vector2(_hexSize.x * 3 / 4, -_hexSize.y / 2),
                 new Vector2(0, -_hexSize.y),
                 new Vector2(0, 0)
             );
@@ -62,5 +60,4 @@ public class HexGrid : Resource
         HexCell result = new HexCell(_hexTransformInv * planeCoord);
         return result;
     }
-
 }

components/MovableComponent.cs

@@ -42,7 +42,6 @@ public class MovableComponent : Node
 
             if (currentAngle < Mathf.Pi && targetAngle > Mathf.Pi)
             {
-			    
             }
 
             if (targetAngle - currentAngle > Mathf.Pi)
@@ -57,7 +56,8 @@ public class MovableComponent : Node
 
         if (Mathf.Abs(currentAngularVelocity) > 0.1 || Mathf.Abs(targetAngle - currentAngle) > 0.01)
         {
-		    var springDamperResult = _angleSpringDamper.Calc(currentAngle, currentAngularVelocity, targetAngle, delta);
+            var springDamperResult =
+                _angleSpringDamper.Calc(currentAngle, currentAngularVelocity, targetAngle, delta);
 
             currentAngle = springDamperResult.Item1;
             currentAngularVelocity = springDamperResult.Item2;
@@ -65,11 +65,12 @@ public class MovableComponent : Node
             EmitSignal("OrientationUpdated", this.currentAngle);
         }
 
-	    if (( Mathf.Abs(currentAngularVelocity) < 5 && Mathf.Abs(targetAngle - currentAngle) < 0.3) 
+        if ((Mathf.Abs(currentAngularVelocity) < 5 && Mathf.Abs(targetAngle - currentAngle) < 0.3)
             && (targetPosition - currentPosition).LengthSquared() > 0.01)
         {
             var springDamperResult =
-			    _positionSpringDamper.CalcClampedSpeed(currentPosition, currentVelocity, targetPosition, delta, maxSpeed);
+                _positionSpringDamper.CalcClampedSpeed(currentPosition, currentVelocity, targetPosition, delta,
+                    maxSpeed);
 
             currentPosition = springDamperResult.Item1;
             currentVelocity = springDamperResult.Item2;

components/WorldInfoComponent.cs

@@ -0,0 +1,21 @@
+using Godot;
+using System;
+
+public class WorldInfoComponent : Node
+{
+    [Export] public NodePath World;
+
+    private HexTile3D _currentHexTile3D;
+    public TileWorld TileWorld;
+
+    // Called when the node enters the scene tree for the first time.
+    public override void _Ready()
+    {
+        TileWorld = GetNode<TileWorld>(World);
+    }
+
+    public void SetWorld(TileWorld tileWorld)
+    {
+        TileWorld = tileWorld;
+    }
+}

entities/Player.cs

@@ -3,8 +3,11 @@ using System;
 
 public class Player : KinematicBody
 {
+    // other members
     private MovableComponent _movable;
     private Spatial _geometry;
+    private WorldInfoComponent _worldInfo;
+    private Vector2 _offsetCoord = Vector2.Zero;
 
     // Called when the node enters the scene tree for the first time.
     public override void _Ready()
@@ -17,10 +20,29 @@ public class Player : KinematicBody
         }
 
         _geometry = (Spatial)FindNode("Geometry", false);
+
+        _worldInfo = (WorldInfoComponent)FindNode("WorldInfo", false);
     }
 
-    private void OnPositionUpdated(Vector3 newPosition)
+    public void OnPositionUpdated(Vector3 newPosition)
     {
+        if (_worldInfo != null)
+        {
+            Vector2 new_offset_coord = _worldInfo.TileWorld.WorldToOffsetCoords(newPosition);
+            if (_offsetCoord != new_offset_coord)
+            {
+                GD.Print("New offset coord " + new_offset_coord);
+                _offsetCoord = new_offset_coord;
+
+            }
+
+            if (_movable != null)
+            {
+                _movable.targetPosition.y  = _worldInfo.TileWorld.GetHeightAtOffset(new_offset_coord);
+                
+            }
+        }
+
         Transform transform = Transform;
         transform.origin = newPosition;
         Transform = transform;
@@ -28,6 +50,6 @@ public class Player : KinematicBody
 
     private void OnOrientationUpdated(float newOrientation)
     {
-        _geometry.Transform = new Transform (new Quat(Vector3.Up, newOrientation), Vector3.Zero);
+        _geometry.Transform = new Transform(new Quat(Vector3.Up, newOrientation), Vector3.Zero);
     }
 }

materials/UndefinedTile.tres

@@ -0,0 +1,4 @@
+[gd_resource type="SpatialMaterial" format=2]
+
+[resource]
+albedo_color = Color( 1, 0, 1, 1 )

project.godot

@@ -9,17 +9,17 @@
 config_version=4
 
 _global_script_classes=[ {
-"base": "Node",
+"base": "Reference",
 "class": "ClickableComponent",
 "language": "GDScript",
 "path": "res://components/ClickableComponent.gd"
 }, {
-"base": "KinematicBody2D",
+"base": "Reference",
 "class": "CollisionLine",
 "language": "GDScript",
 "path": "res://utils/CollisionLine.gd"
 }, {
-"base": "Node",
+"base": "Reference",
 "class": "ColorComponent",
 "language": "GDScript",
 "path": "res://components/ColorComponent.gd"
@@ -54,7 +54,7 @@ _global_script_classes=[ {
 "language": "GDScript",
 "path": "res://utils/SpringDamper.gd"
 }, {
-"base": "Sprite",
+"base": "Reference",
 "class": "TintedSpriteComponent",
 "language": "GDScript",
 "path": "res://components/TintedSpriteComponent.gd"

scenes/AdaptiveWorldStream.cs

@@ -1,6 +1,8 @@
 using Godot;
 using System;
+using System.Diagnostics;
 using System.Linq;
+using GoDotLog;
 using Dictionary = Godot.Collections.Dictionary;
 using Array = Godot.Collections.Array;
 
@@ -15,6 +17,7 @@ public class AdaptiveWorldStream : Spatial
     private Label _mouseTileLabel;
     private Label _numCoordsAddedLabel;
     private Label _numCoordsRemovedLabel;
+    private TextureRect _worldTextureRect;
 
     // scene nodes
     private Spatial _tileHighlight;
@@ -23,6 +26,7 @@ public class AdaptiveWorldStream : Spatial
     private Area _streamContainerArea;
     private Spatial _streamContainerActiveTiles;
     private Player _player;
+    private TileWorld _tileWorld;
 
     // Resources
     private PackedScene _tileHighlightScene;
@@ -45,6 +49,7 @@ public class AdaptiveWorldStream : Spatial
         _mouseTileLabel = GetNode<Label>("Control/HBoxContainer/GridContainer/mouse_tile_label");
         _numCoordsAddedLabel = GetNode<Label>("Control/HBoxContainer/GridContainer/num_coords_added_label");
         _numCoordsRemovedLabel = GetNode<Label>("Control/HBoxContainer/GridContainer/num_coords_removed_label");
+        _worldTextureRect = GetNode<TextureRect>("Control/WorldTextureRect");
 
         // scene nodes
         _tileHighlight = GetNode<Spatial>("TileHighlight");
@@ -53,6 +58,9 @@ public class AdaptiveWorldStream : Spatial
         _streamContainerArea = GetNode<Area>("StreamContainer/Area");
         _streamContainerActiveTiles = GetNode<Spatial>("StreamContainer/ActiveTiles");
         _player = GetNode<Player>("Player");
+        _tileWorld = GetNode<TileWorld>("TileWorld");
+
+        Debug.Assert(_tileWorld != null);
 
         // resources        
         _tileHighlightScene = GD.Load<PackedScene>("utils/TileHighlight.tscn");
@@ -63,10 +71,23 @@ public class AdaptiveWorldStream : Spatial
         _currentTileOffset = new Vector2();
         _hexGrid = new HexGrid();
 
+        // update data
+        _worldTextureRect.RectSize = _tileWorld.Size;
+        
         // connect signals
         _streamContainerArea.Connect("input_event", this, nameof(OnAreaInputEvent));
         _streamContainer.Connect("TileSelected", this, nameof(OnTileSelected));
+        _tileWorld.Connect("WorldGenerated", this, nameof(OnWorldGenerated));
         
+        // perform dependency injection
+        //_streamContainer.SetWorld(_tileWorld);
+        WorldInfoComponent worldInfoComponent = _player.GetNode<WorldInfoComponent>("WorldInfo");
+        if (worldInfoComponent != null)
+        {
+            worldInfoComponent.SetWorld(_tileWorld);
+        }
+        
+        _tileWorld.Generate();
         UpdateCurrentTile();
         _streamContainer.SetCenterTile(_currentTile);
     }
@@ -101,10 +122,10 @@ public class AdaptiveWorldStream : Spatial
         _tileLabel.Text = playerTransform.ToString();
         _tileOffsetLabel.Text = _currentTile.OffsetCoords.ToString();
 
-        //playerTransform.origin += new Vector3(-0.1f, 0, 1) * delta;
         _player.Transform = playerTransform;
     }
 
+
     public override void _Process(float delta)
     {
         _framesPerSecondLabel.Text = Engine.GetFramesPerSecond().ToString();
@@ -121,7 +142,6 @@ public class AdaptiveWorldStream : Spatial
         if (_currentTile.CubeCoords != _lastTile.CubeCoords)
         {
             _streamContainer.SetCenterTile(_currentTile);
-//            CreateStreamActiveTiles();
 
             _numTilesLabel.Text = _streamContainerActiveTiles.GetChildCount().ToString();
             _numCoordsAddedLabel.Text = _streamContainer.AddedCoords.Count.ToString();
@@ -129,7 +149,9 @@ public class AdaptiveWorldStream : Spatial
         }
     }
 
-    public void OnAreaInputEvent(Node camera, InputEvent inputEvent, Vector3 position, Vector3 normal, int shapeIndex)
+
+    public void OnAreaInputEvent(Node camera, InputEvent inputEvent, Vector3 position, Vector3 normal,
+        int shapeIndex)
     {
         HexCell cellAtCursor = _hexGrid.GetHexAt(new Vector2(position.x, position.z));
         Transform highlightTransform = Transform.Identity;
@@ -140,15 +162,15 @@ public class AdaptiveWorldStream : Spatial
 
         _mouseWorldLabel.Text = position.ToString();
         _mouseTileLabel.Text = cellAtCursor.OffsetCoords.ToString();
-
         _mouseTileHighlight.Transform = highlightTransform;
 
-        if (inputEvent is InputEventMouseButton)
+        if (inputEvent is InputEventMouseButton && ((InputEventMouseButton) inputEvent).Pressed)
         {
-            _player.Transform = highlightTransform;
+            _streamContainer.EmitSignal("TileSelected", _streamContainer.GetTile3dAt(cellAtCursor.OffsetCoords));
         }
     }
 
+
     public void OnTileSelected(HexTile3D tile)
     {
         if (_player == null)
@@ -164,4 +186,17 @@ public class AdaptiveWorldStream : Spatial
 
         movableComponent.targetPosition = tile.Transform.origin;
     }
+
+
+    public void OnWorldGenerated()
+    {
+        GD.Print("Using new map");
+        ImageTexture new_world_texture = new ImageTexture();
+        
+        _tileWorld.Heightmap.Unlock();
+        new_world_texture.CreateFromImage(_tileWorld.Heightmap);
+        _tileWorld.Heightmap.Lock();
+
+        _worldTextureRect.Texture = new_world_texture;
+    }
 }

scenes/AdaptiveWorldStream.tscn

@@ -1,13 +1,14 @@
-[gd_scene load_steps=14 format=2]
+[gd_scene load_steps=15 format=2]
 
 [ext_resource path="res://scenes/AdaptiveWorldStream.cs" type="Script" id=1]
 [ext_resource path="res://assets/CreatusPiratePack/characters/Pirate1final_0.01.glb" type="PackedScene" id=2]
-[ext_resource path="res://scenes/World.gd" type="Script" id=3]
+[ext_resource path="res://components/WorldInfoComponent.cs" type="Script" id=3]
 [ext_resource path="res://scenes/StreamContainer.cs" type="Script" id=4]
 [ext_resource path="res://entities/Player.cs" type="Script" id=5]
 [ext_resource path="res://scenes/DebugCamera.gd" type="Script" id=6]
 [ext_resource path="res://utils/TileHighlight.tscn" type="PackedScene" id=7]
 [ext_resource path="res://components/MovableComponent.cs" type="Script" id=8]
+[ext_resource path="res://scenes/TileWorld.cs" type="Script" id=9]
 
 [sub_resource type="CubeMesh" id=1]
 size = Vector3( 1, 1, 1 )
@@ -32,13 +33,14 @@ radial_segments = 16
 script = ExtResource( 1 )
 
 [node name="TileHighlight" parent="." instance=ExtResource( 7 )]
+visible = false
 
 [node name="MouseTileHighlight" parent="." instance=ExtResource( 7 )]
 
-[node name="World" type="Spatial" parent="."]
+[node name="TileWorld" type="Spatial" parent="."]
-script = ExtResource( 3 )
+script = ExtResource( 9 )
 
-[node name="DirectionalLight" type="DirectionalLight" parent="World"]
+[node name="DirectionalLight" type="DirectionalLight" parent="TileWorld"]
 transform = Transform( 0.328059, -0.878387, 0.347583, 0, 0.367946, 0.929847, -0.944657, -0.305045, 0.120708, 0, 6.59293, 1.20265 )
 shadow_enabled = true
 directional_shadow_mode = 0
@@ -178,9 +180,16 @@ margin_right = 127.0
 margin_bottom = 158.0
 text = "0"
 
+[node name="WorldTextureRect" type="TextureRect" parent="Control"]
+margin_left = 1.0
+margin_top = 300.0
+margin_right = 101.0
+margin_bottom = 400.0
+
 [node name="StreamContainer" type="Spatial" parent="."]
 script = ExtResource( 4 )
 Dimensions = Vector2( 18, 17 )
+World = NodePath("../TileWorld")
 
 [node name="ActiveTiles" type="Spatial" parent="StreamContainer"]
 
@@ -222,3 +231,7 @@ script = ExtResource( 8 )
 
 [node name="Pirate1final_001" parent="Player/Geometry" instance=ExtResource( 2 )]
 transform = Transform( 0.4, 0, 0, 0, 0.4, 0, 0, 0, 0.4, 0, 0, 0 )
+
+[node name="WorldInfo" type="Node" parent="Player"]
+script = ExtResource( 3 )
+World = NodePath("../../TileWorld")

scenes/HexTile3D.cs

@@ -4,10 +4,12 @@ public class HexTile3D : Spatial
 {
     public enum TileType
     {
+        Undefined,
         Sand,
         Grass,
         DeepGrass
     }
+
     static public TileType[] ValidTileTypes = { TileType.Sand, TileType.Grass, TileType.DeepGrass };
 
     // scene nodes
@@ -19,6 +21,7 @@ public class HexTile3D : Spatial
     delegate void TileSelected(HexTile3D tile3d);
 
     // other member variables
+    private SpatialMaterial _undefinedMaterial;
     private SpatialMaterial _sandMaterial;
     private SpatialMaterial _grassMaterial;
     private SpatialMaterial _deepGrassMaterial;
@@ -31,10 +34,7 @@ public class HexTile3D : Spatial
 
     public Vector2 OffsetCoords
     {
-        get
+        get { return Cell.OffsetCoords; }
-        {
-            return Cell.OffsetCoords;
-        }
 
         set
         {
@@ -48,12 +48,10 @@ public class HexTile3D : Spatial
     }
 
     private TileType _type;
+
     public TileType Type
     {
-        get
+        get { return _type; }
-        {
-            return _type;
-        }
 
         set
         {
@@ -61,11 +59,17 @@ public class HexTile3D : Spatial
 
             switch (_type)
             {
-                case TileType.Sand: _mesh.SetSurfaceMaterial(0, _sandMaterial);
+                case TileType.Undefined:
+                    _mesh.SetSurfaceMaterial(0, _undefinedMaterial);
                     break;                    
-                case TileType.Grass: _mesh.SetSurfaceMaterial(0, _grassMaterial);
+                case TileType.Sand:
+                    _mesh.SetSurfaceMaterial(0, _sandMaterial);
                     break;
-                case TileType.DeepGrass: _mesh.SetSurfaceMaterial(0, _deepGrassMaterial);
+                case TileType.Grass:
+                    _mesh.SetSurfaceMaterial(0, _grassMaterial);
+                    break;
+                case TileType.DeepGrass:
+                    _mesh.SetSurfaceMaterial(0, _deepGrassMaterial);
                     break;
                 default:
                     GD.Print("Invalid tile type: " + value.ToString());
@@ -89,15 +93,17 @@ public class HexTile3D : Spatial
         _area.Connect("mouse_entered", this, nameof(OnAreaMouseEntered));
         _area.Connect("mouse_exited", this, nameof(OnAreaMouseExited));
 
+        _undefinedMaterial = GD.Load<SpatialMaterial>("res://materials/UndefinedTile.tres");
         _sandMaterial = GD.Load<SpatialMaterial>("res://materials/SandTile.tres");
         _grassMaterial = GD.Load<SpatialMaterial>("res://materials/GrassTile.tres");
         _deepGrassMaterial = GD.Load<SpatialMaterial>("res://materials/DeepGrassTile.tres");
 
-        this.Type = TileType.Grass;
+        this.Type = TileType.Undefined;
     }
 
 
-    public void OnAreaInputEvent(Node camera, InputEvent inputEvent, Vector3 position, Vector3 normal, int shapeIndex)
+    public void OnAreaInputEvent(Node camera, InputEvent inputEvent, Vector3 position, Vector3 normal,
+        int shapeIndex)
     {
         if (IsMouseOver && inputEvent is InputEventMouseButton)
         {
@@ -131,4 +137,3 @@ public class HexTile3D : Spatial
 //      
 //  }
 }
-

scenes/HexTile3D.tscn

@@ -1,7 +1,7 @@
 [gd_scene load_steps=5 format=2]
 
 [ext_resource path="res://scenes/HexTile3D.cs" type="Script" id=1]
-[ext_resource path="res://materials/DeepGrassTile.tres" type="Material" id=2]
+[ext_resource path="res://materials/UndefinedTile.tres" type="Material" id=2]
 
 [sub_resource type="CylinderMesh" id=6]
 top_radius = 0.5

scenes/StreamContainer.cs

@@ -5,20 +5,20 @@ using System.Diagnostics;
 using System.Linq;
 using GoDotLog;
 
-//using Dictionary = Godot.Collections.Dictionary;
-
 public class StreamContainer : Spatial
 {
     // scene nodes
     private MeshInstance _bounds;
     private Spatial _activeTiles;
     private Queue<HexTile3D> _unusedTiles;
+    private TileWorld _tileWorld;
 
     // resources
     private PackedScene _hexTileScene = GD.Load<PackedScene>("res://scenes/HexTile3D.tscn");
 
     // exports
     [Export] public Vector2 Dimensions = new Vector2(8, 4);
+    [Export] public NodePath World;
 
     [Signal]
     delegate void TileSelected(HexTile3D tile3d);
@@ -28,7 +28,6 @@ public class StreamContainer : Spatial
     private Rect2 _currentOffsetCoordRect;
     private Rect2 _oldOffsetCoordRect;
     private HexGrid _hexGrid;
-    private Random _tileTypeRandom;
 
     private Dictionary<Vector2, HexTile3D> _coordToTile = new Dictionary<Vector2, HexTile3D>();
     public List<Vector2> RemovedCoords = new List<Vector2>();
@@ -39,19 +38,25 @@ public class StreamContainer : Spatial
         get { return _currentOffsetCoordRect; }
     }
 
+    public void SetWorld(TileWorld tileWorld)
+    {
+        _tileWorld = tileWorld;
+    }
+    
     // Called when the node enters the scene tree for the first time.
     public override void _Ready()
     {
         _unusedTiles = new Queue<HexTile3D>();
         _bounds = GetNode<MeshInstance>("Bounds");
         _activeTiles = GetNode<Spatial>("ActiveTiles");
-        _tileTypeRandom = new Random();
 
         _hexGrid = new HexGrid();
 
         Transform boundsTransform = Transform.Identity;
         boundsTransform = boundsTransform.Scaled(new Vector3(Dimensions.x, 1, Dimensions.y));
         _bounds.Transform = boundsTransform;
+
+        _tileWorld = GetNode<TileWorld>(World);
     }
 
 
@@ -131,6 +136,7 @@ public class StreamContainer : Spatial
                 if (isInOld && !isInCurrent && _coordToTile.Keys.Contains(coord))
                 {
                     HexTile3D tile3D = _coordToTile[coord];
+                    tile3D.Type = HexTile3D.TileType.Undefined;
                     _unusedTiles.Enqueue(tile3D);
                     _coordToTile.Remove(coord);
                     RemovedCoords.Add(coord);
@@ -163,6 +169,11 @@ public class StreamContainer : Spatial
                 {
                     HexTile3D tile3D = _unusedTiles.Dequeue();
                     tile3D.OffsetCoords = coord;
+                    tile3D.Type = _tileWorld.GetTileTypeAtOffset(coord);
+                    Transform tileTransform = tile3D.Transform;
+                    tileTransform.origin.y = _tileWorld.GetHeightAtOffset(coord);
+                    tile3D.Transform = tileTransform;
+                    
                     _coordToTile[coord] = tile3D;
                 }
             }
@@ -180,10 +191,10 @@ public class StreamContainer : Spatial
             tile3D.Connect("TileSelected", this, nameof(OnTileClicked));
 
             Transform tileTransform = tile3D.Transform;
-            tileTransform.origin.y = GD.Randf() * 0.2f;
+            tileTransform.origin.y = _tileWorld.GetHeightAtOffset(offsetCoords);
             tile3D.Transform = tileTransform;
+            tile3D.Type = _tileWorld.GetTileTypeAtOffset(offsetCoords);
             
-            tile3D.Type = HexTile3D.ValidTileTypes[_tileTypeRandom.Next(HexTile3D.ValidTileTypes.Length)];
             _coordToTile[offsetCoords] = tile3D;
         }
 

scenes/TileWorld.cs

@@ -0,0 +1,125 @@
+using Godot;
+using System;
+using System.Linq;
+
+public class TileWorld : Spatial
+{
+    // signals
+    [Signal]
+    delegate void WorldGenerated();
+
+    // public members
+    public Image Heightmap;
+    public Vector2 Size = new Vector2(100, 100);
+    public float HeightScale = 10;
+
+    // private members
+    private HexGrid _hexGrid;
+    private Random _tileTypeRandom;
+
+    // Called when the node enters the scene tree for the first time.
+    public override void _Ready()
+    {
+        _hexGrid = new HexGrid();
+        _tileTypeRandom = new Random();
+    }
+
+
+    public void Generate()
+    {
+        // GenerateSimpleMap();
+        GenerateNoiseMap();
+
+        EmitSignal("WorldGenerated");
+    }
+
+
+    private void GenerateSimpleMap()
+    {
+        Heightmap = new Image();
+        Heightmap.Create((int)Size.x, (int)Size.y, false, Image.Format.Rf);
+        Heightmap.Lock();
+
+        foreach (int coord_x in Enumerable.Range(0, (int)Size.x))
+        {
+            foreach (int coord_y in Enumerable.Range(0, (int)Size.y))
+            {
+                SetHeightAtOffset(new Vector2(coord_x, coord_y), 0.5f);
+            }
+        }
+    }
+    
+
+    private void GenerateNoiseMap()
+    {
+        Heightmap = new Image();
+        Heightmap.Create((int)Size.x, (int)Size.y, false, Image.Format.Rf);
+        
+        NoiseTexture noise_texture = new NoiseTexture();
+        OpenSimplexNoise noise_generator = new OpenSimplexNoise();
+
+        noise_generator.Seed = -1626828106;
+        noise_generator.Octaves = 3;
+        noise_generator.Period = 5;
+        noise_generator.Persistence = 0.5f;
+        noise_generator.Lacunarity = 2;
+        
+        Heightmap.CopyFrom(noise_generator.GetImage((int)Size.x, (int)Size.y, null));
+    }
+
+
+    private void ApplyHeightMap()
+    {
+        
+    }
+    
+    public bool IsOffsetCoordValid(Vector2 offset_coord)
+    {
+        return ((int)Math.Clamp(offset_coord.x, 0, Size.x) == (int)offset_coord.x
+                && (int)Math.Clamp(offset_coord.y, 0, Size.y) == (int)offset_coord.y);
+    }
+
+
+    public HexTile3D.TileType GetTileTypeAtOffset(Vector2 offset_coord)
+    {
+        if (!IsOffsetCoordValid(offset_coord))
+        {
+            return HexTile3D.TileType.Undefined;
+        }
+
+        return HexTile3D.ValidTileTypes[_tileTypeRandom.Next(HexTile3D.ValidTileTypes.Length)];
+    }
+
+
+    public void SetHeightAtOffset(Vector2 offset_coord, float height)
+    {
+        if (!IsOffsetCoordValid(offset_coord))
+        {
+            return;
+        }
+        
+        Heightmap.SetPixel((int) offset_coord.x, (int) offset_coord.y, new Color(height / HeightScale, 0f, 0f));
+    }
+
+    public float GetHeightAtOffset(Vector2 offset_coord)
+    {
+        if (!IsOffsetCoordValid(offset_coord))
+        {
+            return -0.1f;
+        }
+
+        return Heightmap.GetPixel((int)offset_coord.x, (int)offset_coord.y).r * HeightScale - HeightScale * 0.5f ;
+    }
+
+
+    public Vector2 WorldToOffsetCoords(Vector3 world_coord)
+    {
+        return _hexGrid.GetHexAt(new Vector2(world_coord.x, world_coord.z)).OffsetCoords;
+    }
+
+//  // Called every frame. 'delta' is the elapsed time since the previous frame.
+//  public override void _Process(float delta)
+//  {
+//      
+//  }
+}

tests/HexGridTests.cs

@@ -17,7 +17,7 @@ public class HexGridTests : TestClass
 
         Debug.Assert(grid.GetHexAt(new Vector2(0, 0)).AxialCoords == new Vector2(0, 0));
         Debug.Assert(grid.GetHexAt(new Vector2(w / 2 - 0.01f, 0)).AxialCoords == new Vector2(0, 0));
-        Debug.Assert(grid.GetHexAt(new Vector2(w / 2 - 0.01f, -h/2)).AxialCoords == new Vector2(1, 0));
+        Debug.Assert(grid.GetHexAt(new Vector2(w / 2 - 0.01f, -h / 2)).AxialCoords == new Vector2(1, 0));
-        Debug.Assert(grid.GetHexAt(new Vector2(w / 2 - 0.01f, h/2)).AxialCoords == new Vector2(1, -1));
+        Debug.Assert(grid.GetHexAt(new Vector2(w / 2 - 0.01f, h / 2)).AxialCoords == new Vector2(1, -1));
     }
 }