Started populating generated islands.

assets/Environment/grass.tscn

@@ -0,0 +1,5 @@
+[gd_scene load_steps=2 format=2]
+
+[ext_resource path="res://assets/KenneySurvivalKit/Models/grass.glb" type="PackedScene" id=1]
+
+[node name="grass" instance=ExtResource( 1 )]

assets/Environment/grassLarge.tscn

@@ -0,0 +1,8 @@
+[gd_scene load_steps=2 format=2]
+
+[ext_resource path="res://assets/KenneySurvivalKit/Models/grassLarge.glb" type="PackedScene" id=1]
+
+[node name="grassLarge" instance=ExtResource( 1 )]
+
+[node name="grassLarge" parent="." index="0"]
+transform = Transform( 1.5, 0, 0, 0, 1.5, 0, 0, 0, 1.5, 0, 0, 0 )

assets/Environment/rockA.tscn

@@ -0,0 +1,19 @@
+[gd_scene load_steps=3 format=2]
+
+[ext_resource path="res://assets/KenneySurvivalKit/Models/rockA.glb" type="PackedScene" id=1]
+
+[sub_resource type="CylinderShape" id=1]
+height = 0.736755
+radius = 0.4
+
+[node name="rockA" instance=ExtResource( 1 )]
+
+[node name="rockA" parent="." index="0"]
+transform = Transform( 2, 0, 0, 0, 2, 0, 0, 0, 2, 0, 0, 0 )
+
+[node name="StaticBody" type="StaticBody" parent="." index="1"]
+input_ray_pickable = false
+
+[node name="CollisionShape" type="CollisionShape" parent="StaticBody" index="0"]
+transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0.373712, 0 )
+shape = SubResource( 1 )

assets/Environment/rockB.tscn

@@ -0,0 +1,19 @@
+[gd_scene load_steps=3 format=2]
+
+[ext_resource path="res://assets/KenneySurvivalKit/Models/rockB.glb" type="PackedScene" id=1]
+
+[sub_resource type="CylinderShape" id=1]
+height = 0.679261
+radius = 0.4
+
+[node name="rockB" instance=ExtResource( 1 )]
+
+[node name="rockB" parent="." index="0"]
+transform = Transform( 1.5, 0, 0, 0, 1.5, 0, 0, 0, 1.6, 0, 0, 0 )
+
+[node name="StaticBody" type="StaticBody" parent="." index="1"]
+input_ray_pickable = false
+
+[node name="CollisionShape" type="CollisionShape" parent="StaticBody" index="0"]
+transform = Transform( 1, 0, 0, 0, 0.999997, -0.00240855, 0, 0.00240855, 0.999997, 0, 0.376176, 0 )
+shape = SubResource( 1 )

assets/Environment/rockC.tscn

@@ -0,0 +1,19 @@
+[gd_scene load_steps=3 format=2]
+
+[ext_resource path="res://assets/KenneySurvivalKit/Models/rockC.glb" type="PackedScene" id=1]
+
+[sub_resource type="CylinderShape" id=1]
+height = 1.38848
+radius = 0.4
+
+[node name="rockC" instance=ExtResource( 1 )]
+
+[node name="rockC" parent="." index="0"]
+transform = Transform( 1.7, 0, 0, 0, 1.7, 0, 0, 0, 1.7, 0, 0, 0 )
+
+[node name="StaticBody" type="StaticBody" parent="." index="1"]
+input_ray_pickable = false
+
+[node name="CollisionShape" type="CollisionShape" parent="StaticBody" index="0"]
+transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0.746043, 0 )
+shape = SubResource( 1 )

assets/KenneySurvivalKit/License.txt

@@ -0,0 +1,22 @@
+	
+
+	Survival Kit 1.1
+
+	Created/distributed by Kenney (www.kenney.nl)
+	Creation date: 25-05-2022 11:00
+
+			------------------------------
+
+	License: (Creative Commons Zero, CC0)
+	http://creativecommons.org/publicdomain/zero/1.0/
+
+	This content is free to use in personal, educational and commercial projects.
+	Support us by crediting Kenney or www.kenney.nl (this is not mandatory)
+
+			------------------------------
+
+	Donate:   http://support.kenney.nl
+	Patreon:  http://patreon.com/kenney/
+
+	Follow on Twitter for updates:
+	http://twitter.com/KenneyNL

materials/shader/IslandColorRampShader.gdshader

@@ -16,12 +16,10 @@ vec3 color_ramp(float h) {
 		return vec3(0.8, 0.8, 0.1);
 	} else if (h < 0.6){
 		return vec3(0, 0.6, 0);
-	} else if (h < 0.68){
+	} else if (h < 0.78){
 		return vec3(0, 0.4, 0);
-	} else if (h <= 0.78){
-		return vec3(0.6, 0.6, 0.6);
 	} else if (h < 1.0){
-		return vec3(0.8, 0.8, 0.8);
+		return vec3(0.5, 0.5, 0.4);
 	}
 	
 	return vec3(1.0);

materials/shader/IslandHeightmapFalloffShader.gdshader

@@ -18,12 +18,10 @@ vec3 color_ramp(float h) {
 		return vec3(0.8, 0.8, 0.1);
 	} else if (h < 0.65){
 		return vec3(0, 0.6, 0);
-	} else if (h < 0.75){
-		return vec3(0, 0.4, 0);
 	} else if (h <= 0.85){
-		return vec3(0.6, 0.6, 0.6);
+		return vec3(0, 0.4, 0);
 	} else if (h < 1.0){
-		return vec3(0.8, 0.8, 0.8);
+		return vec3(0.6, 0.6, 0.6);
 	}
 	
 	return vec3(1.0);

scenes/Game.tscn

@@ -199,7 +199,6 @@ margin_left = 10.0
 margin_top = 10.0
 margin_right = 110.0
 margin_bottom = 258.0
-alignment = 2
 script = ExtResource( 12 )
 
 [node name="HBoxContainer" type="HBoxContainer" parent="Generator Container/WorldGeneratorContainer"]
@@ -228,6 +227,7 @@ margin_bottom = 40.0
 text = "Generate"
 
 [node name="WorldTextureRect" type="TextureRect" parent="Generator Container/WorldGeneratorContainer"]
+visible = false
 margin_top = 44.0
 margin_right = 100.0
 margin_bottom = 144.0
@@ -236,6 +236,7 @@ stretch_mode = 1
 flip_v = true
 
 [node name="HeightTextureRect" type="TextureRect" parent="Generator Container/WorldGeneratorContainer"]
+visible = false
 margin_top = 148.0
 margin_right = 100.0
 margin_bottom = 248.0

scenes/TileWorld.cs

@@ -2,6 +2,8 @@ using Godot;
 using System;
 using System.Linq;
 using System.Diagnostics;
+using Godot.Collections;
+using Array = Godot.Collections.Array;
 using Vector2 = Godot.Vector2;
 using Vector3 = Godot.Vector3;
 
@@ -11,9 +13,14 @@ public class TileWorld : Spatial
     {
         Heightmap,
         Color,
+        Objects,
         Done
     }
 
+    // constants
+    private static readonly Color RockColor = new Color (0.5f, 0.5f, 0.4f, 1f);
+    private static readonly Color GrassColor = new Color (0, 0.4f, 0, 1f);
+    
     private GenerationState _currentGenerationState = GenerationState.Heightmap;
 
     // signals
@@ -34,7 +41,9 @@ public class TileWorld : Spatial
     private TextureRect _worldOffscreenTextureRect;
     private Viewport _heightmapOffscreenViewport;
     private TextureRect _heightmapOffscreenTextureRect;
-
+    private Array<Spatial> _rockAssets = new Array<Spatial>();
+    private Array<Spatial> _grassAssets = new Array<Spatial>();
+    private Spatial _environmentNode;
 
     // Called when the node enters the scene tree for the first time.
     public override void _Ready()
@@ -56,6 +65,21 @@ public class TileWorld : Spatial
         Debug.Assert(_heightmapOffscreenTextureRect != null);
         _heightmapOffscreenTextureRect.SetSize(new Vector2(Size, Size));
 
+        GetNode<Spatial>("Assets").Visible = false;
+        
+        foreach (Spatial asset in GetNode<Node>("Assets/Rocks").GetChildren())
+        {
+            _rockAssets.Add(asset);
+        }
+
+        foreach (Spatial asset in GetNode<Node>("Assets/Grass").GetChildren())
+        {
+            _grassAssets.Add(asset);
+        }
+
+        
+        _environmentNode = GetNode<Spatial>("Environment");
+        
         Generate(Size);
     }
 
@@ -66,6 +90,8 @@ public class TileWorld : Spatial
         Size = size;
         _worldOffscreenViewport.Size = new Vector2(size, size);
         _heightmapOffscreenViewport.Size = new Vector2(size, size);
+
+        OnMapGenerationStart();
         
         GenerateNoiseMap();
 //        GenerateDebugMap();
@@ -122,7 +148,14 @@ public class TileWorld : Spatial
         OnHeightMapChanged();
     }
 
-
+    private void OnMapGenerationStart()
+    {
+        foreach (Node child in _environmentNode.GetChildren())
+        {
+            child.QueueFree();
+        }
+    }
+    
     private void OnHeightMapChanged()
     {
         _currentGenerationState = GenerationState.Heightmap;
@@ -134,6 +167,62 @@ public class TileWorld : Spatial
         EmitSignal("WorldGenerated");
     }
 
+    Spatial SelectAsset(Vector2 offsetCoord, Array<Spatial> assets, Random randomGenerator, double probability)
+    {
+        if (randomGenerator.NextDouble() < 1.0 - probability)
+        {
+            return null;
+        }
+        
+        int assetIndex = randomGenerator.Next(assets.Count);
+        Spatial assetInstance = (Spatial) assets[assetIndex].Duplicate();
+        Transform assetTransform = Transform.Identity;
+        assetTransform.origin = GetTileWorldCenterFromOffset(offsetCoord);
+        assetTransform.origin.y += 1.2f;
+        assetTransform.basis = assetTransform.basis.Rotated(Vector3.Up, (float)(randomGenerator.NextDouble() * Mathf.Pi * 2));
+        assetInstance.Transform = assetTransform;
+
+        return assetInstance;
+    }
+
+    bool IsColorEqualApprox(Color colorA, Color colorB)
+    {
+        Vector3 colorDifference = new Vector3(colorA.r - colorB.r, colorA.g - colorB.g, colorA.b - colorB.b);
+        return colorDifference.LengthSquared() < 0.1 * 0.1;
+    }
+    
+    private void PopulateEnvironment()
+    {
+        Random environmentRandom = new Random(Seed);
+        
+        Colormap.Lock();
+        foreach (int coord_x in Enumerable.Range(0, Size))
+        {
+            foreach (int coord_y in Enumerable.Range(0, Size))
+            {
+                Vector2 offsetCoord = new Vector2(coord_x, coord_y);
+                Color colorValue = Colormap.GetPixel(coord_x, coord_y);
+
+                if (IsColorEqualApprox(colorValue, RockColor))
+                {
+                    Spatial rockAsset = SelectAsset(offsetCoord, _rockAssets, environmentRandom, 0.15);
+                    if (rockAsset != null)
+                    {
+                        _environmentNode.AddChild(rockAsset);
+                    }
+                } else if (IsColorEqualApprox(colorValue, GrassColor))
+                {
+                    Spatial grassAsset = SelectAsset(offsetCoord, _grassAssets, environmentRandom, 0.35);
+                    if (grassAsset != null)
+                    {
+                        _environmentNode.AddChild(grassAsset);
+                    } 
+                }
+            }
+        }
+        Colormap.Unlock();
+    }
+
     public override void _Process(float delta)
     {
         if (_currentGenerationState == GenerationState.Heightmap)
@@ -147,14 +236,17 @@ public class TileWorld : Spatial
         else if (_currentGenerationState == GenerationState.Color)
         {
             Colormap = new Image();
-            Colormap.Create(Size, Size, false, Image.Format.Rgba8);
+            Colormap.Create(Size, Size, false, Image.Format.Rgb8);
             Colormap.CopyFrom(_worldOffscreenViewport.GetTexture().GetData());
             Heightmap.Lock();
 
-            _currentGenerationState = GenerationState.Done;
+            _currentGenerationState = GenerationState.Objects;
+            
+            PopulateEnvironment();
 
             OnMapGenerationComplete();
         }
+        
     }
 
     public bool IsOffsetCoordValid(Vector2 offsetCoord)
@@ -223,9 +315,10 @@ public class TileWorld : Spatial
     {
         Vector2 tileCenter = _hexGrid.GetHexCenterFromOffset(offsetCoord);
 
+        // TODO: coordinates do not match for bigger maps
         return new Vector3(
-            tileCenter.x,
+            tileCenter.x - Size * 0.75f * 0.5f,
             GetHeightAtOffset(offsetCoord),
-            tileCenter.y);
+            tileCenter.y + (Mathf.Sqrt(3) / 2) * Size * 0.5f);
     }
 }

scenes/TileWorld.tscn

@@ -1,9 +1,13 @@
-[gd_scene load_steps=5 format=2]
+[gd_scene load_steps=9 format=2]
 
 [ext_resource path="res://scenes/TileWorld.cs" type="Script" id=1]
 [ext_resource path="res://icon.png" type="Texture" id=2]
 [ext_resource path="res://materials/IslandColorRampShader.tres" type="Material" id=3]
 [ext_resource path="res://materials/IslandHeightmapFalloffShader.tres" type="Material" id=4]
+[ext_resource path="res://assets/Environment/rockB.tscn" type="PackedScene" id=5]
+[ext_resource path="res://assets/Environment/rockC.tscn" type="PackedScene" id=6]
+[ext_resource path="res://assets/Environment/rockA.tscn" type="PackedScene" id=7]
+[ext_resource path="res://assets/Environment/grassLarge.tscn" type="PackedScene" id=8]
 
 [node name="TileWorld" type="Spatial"]
 script = ExtResource( 1 )
@@ -44,3 +48,20 @@ material = ExtResource( 4 )
 texture = ExtResource( 2 )
 
 [node name="Camera2D" type="Camera2D" parent="HeightmapOffscreenViewport"]
+
+[node name="Assets" type="Spatial" parent="."]
+visible = false
+
+[node name="Rocks" type="Spatial" parent="Assets"]
+
+[node name="rockA" parent="Assets/Rocks" instance=ExtResource( 7 )]
+
+[node name="rockB" parent="Assets/Rocks" instance=ExtResource( 5 )]
+
+[node name="rockC" parent="Assets/Rocks" instance=ExtResource( 6 )]
+
+[node name="Grass" type="Spatial" parent="Assets"]
+
+[node name="grassLarge" parent="Assets/Grass" instance=ExtResource( 8 )]
+
+[node name="Environment" type="Spatial" parent="."]