From eab4f32a256a9881e262fc62971b26e8098d1be0 Mon Sep 17 00:00:00 2001
From: RandomityGuy <31925790+RandomityGuy@users.noreply.github.com>
Date: Fri, 4 Jun 2021 23:36:32 +0530
Subject: [PATCH] skybox test

---
 src/MarbleWorld.hx    | 11 ++++++-
 src/ResourceLoader.hx | 13 ++++++++
 src/Sky.hx            | 69 +++++++++++++++++++++++++++++++++++++++++++
 src/Util.hx           | 10 +++++++
 4 files changed, 102 insertions(+), 1 deletion(-)
 create mode 100644 src/Sky.hx

diff --git a/src/MarbleWorld.hx b/src/MarbleWorld.hx
index 7dd6b9cd..c52250f6 100644
--- a/src/MarbleWorld.hx
+++ b/src/MarbleWorld.hx
@@ -1,5 +1,7 @@
 package src;
 
+import src.Sky;
+import h3d.scene.Mesh;
 import src.InstanceManager;
 import h3d.scene.MeshBatch;
 import src.DtsObject;
@@ -22,13 +24,18 @@ class MarbleWorld {
 	public var dtsObjects:Array<DtsObject> = [];
 
 	public var currentTime:Float = 0;
+	public var sky:Sky;
 
-	var scene:Scene;
+	public var scene:Scene;
 
 	public function new(scene:Scene) {
 		this.collisionWorld = new CollisionWorld();
 		this.scene = scene;
 		this.instanceManager = new InstanceManager(scene);
+		this.sky = new Sky();
+		sky.dmlPath = "data/skies/sky_day.dml";
+		sky.init(cast this);
+		scene.addChild(sky);
 	}
 
 	public function addInterior(obj:InteriorObject) {
@@ -69,6 +76,8 @@ class MarbleWorld {
 		marble.level = cast this;
 		if (marble.controllable) {
 			this.scene.addChild(marble.camera);
+			// Ugly hack
+			sky.follow = marble;
 		}
 		this.collisionWorld.addMovingEntity(marble.collider);
 		this.scene.addChild(marble);
diff --git a/src/ResourceLoader.hx b/src/ResourceLoader.hx
index 737d8e7e..95205c35 100644
--- a/src/ResourceLoader.hx
+++ b/src/ResourceLoader.hx
@@ -1,5 +1,6 @@
 package src;
 
+import hxd.res.Image;
 import h3d.mat.Texture;
 import h3d.scene.Object;
 import sys.FileSystem;
@@ -17,6 +18,7 @@ class ResourceLoader {
 	static var interiorResources:Map<String, Dif> = new Map();
 	static var dtsResources:Map<String, DtsFile> = new Map();
 	static var textureCache:Map<String, Texture> = new Map();
+	static var imageCache:Map<String, Image> = new Map();
 
 	public static function loadInterior(path:String) {
 		if (interiorResources.exists(path))
@@ -50,6 +52,17 @@ class ResourceLoader {
 		return null;
 	}
 
+	public static function getImage(path:String) {
+		if (imageCache.exists(path))
+			return imageCache.get(path);
+		if (fileSystem.exists(path)) {
+			var tex = loader.load(path).toImage();
+			imageCache.set(path, tex);
+			return tex;
+		}
+		return null;
+	}
+
 	public static function clearInteriorResources() {
 		interiorResources = new Map();
 	}
diff --git a/src/Sky.hx b/src/Sky.hx
new file mode 100644
index 00000000..3434a145
--- /dev/null
+++ b/src/Sky.hx
@@ -0,0 +1,69 @@
+package src;
+
+import src.Util;
+import src.MarbleWorld;
+import hxd.BitmapData;
+import h3d.shader.CubeMap;
+import h3d.mat.Texture;
+import haxe.io.Path;
+import sys.io.File;
+import src.ResourceLoader;
+import h3d.scene.Object;
+
+class Sky extends Object {
+	public var dmlPath:String;
+
+	public function new() {
+		super();
+	}
+
+	public function init(level:MarbleWorld) {
+		var texture = createSkyboxCubeTextured(this.dmlPath);
+		var sky = new h3d.prim.Sphere(300, 128, 128);
+		sky.addNormals();
+		var skyMesh = new h3d.scene.Mesh(sky, this);
+		skyMesh.material.mainPass.culling = Front;
+		skyMesh.material.mainPass.addShader(new h3d.shader.CubeMap(texture));
+		skyMesh.material.shadows = false;
+		skyMesh.culled = false;
+	}
+
+	function createSkyboxCubeTextured(dmlPath:String) {
+		if (ResourceLoader.fileSystem.exists(dmlPath)) {
+			var dmlFile = File.getContent(dmlPath);
+			var dmlDirectory = Path.directory(dmlPath);
+			var lines = dmlFile.split('\n').map(x -> x.toLowerCase());
+			var skyboxImages = [];
+
+			var skyboxIndices = [3, 1, 2, 0, 4, 5];
+
+			for (i in 0...6) {
+				var line = lines[i];
+				var filenames = ResourceLoader.getFullNamesOf(dmlDirectory + '/' + line);
+				if (filenames.length == 0) {
+					skyboxImages.push(new BitmapData(128, 128));
+				} else {
+					var image = ResourceLoader.getImage(filenames[0]).toBitmap();
+					skyboxImages.push(image);
+				}
+			}
+			var maxwidth = 0;
+			var maxheight = 0;
+			for (texture in skyboxImages) {
+				if (texture.height > maxheight)
+					maxheight = texture.height;
+				if (texture.width > maxwidth)
+					maxwidth = texture.width;
+			}
+
+			Util.rotateImage(skyboxImages[0], Math.PI / 2);
+
+			var cubemaptexture = new Texture(maxheight, maxwidth, [Cube]);
+			for (i in 0...6) {
+				cubemaptexture.uploadBitmap(skyboxImages[skyboxIndices[i]], 0, i);
+			}
+			return cubemaptexture;
+		}
+		return null;
+	}
+}
diff --git a/src/Util.hx b/src/Util.hx
index 987e7f6c..d68fc1f5 100644
--- a/src/Util.hx
+++ b/src/Util.hx
@@ -1,5 +1,6 @@
 package src;
 
+import hxd.BitmapData;
 import h3d.Vector;
 
 class Util {
@@ -32,4 +33,13 @@ class Util {
 	public static function lerpThreeVectors(v1:Vector, v2:Vector, t:Float) {
 		return new Vector(lerp(v1.x, v2.x, t), lerp(v1.y, v2.y, t), lerp(v1.z, v2.z, t));
 	}
+
+	public static function rotateImage(bitmap:BitmapData, angle:Float) {
+		// var bmp = new Bitmap(Tile.fromBitmap(bitmap));
+		// bmp.rotate(angle);
+		// var output = new Texture(bitmap.width, bitmap.height, [TextureFlags.Target]);
+		// bmp.drawTo(output);
+		// var pixels = output.capturePixels();
+		// bitmap.setPixels(pixels);
+	}
 }