Started development of BECS - the basic ECS system for the engine

These files are probably nothing of great importance to our
development and thus have no business showing up in our git status

.gitmodules

@@ -4,12 +4,14 @@
 [submodule "glm"]
 	path = libs/glm
 	url = https://github.com/nigelbarink/glm.git
+	ignore = untracked
 [submodule "spdlog"]
 	path = libs/spdlog
 	url = https://github.com/nigelbarink/spdlog.git
 [submodule "tinygltf"]
 	path = libs/tinygltf
 	url = https://github.com/syoyo/tinygltf.git
+	ignore = untracked
 [submodule "GorrillaAudio"]
 	path = libs/GorillaAudio
 	url = https://github.com/mewspring/gorilla-audio.git
@@ -22,6 +24,7 @@
 [submodule "libs/steam-audio"]
 	path = libs/steam-audio
 	url = https://github.com/ValveSoftware/steam-audio.git
+	ignore = untracked
 [submodule "libs/physx"]
 	path = libs/physx
 	url = https://git.barink.dev/Nigel/PhysX.git

.vscode/settings.json

@@ -1,6 +0,0 @@
-{
-    "cmake.configureOnOpen": true,
-    "files.associations": {
-        "iosfwd": "cpp"
-    }
-}

BarinkEngine/Include/AssetManager/ModelImporter.h

@@ -1,7 +1,8 @@
 #pragma once
-#define TINYGLTF_IMPLEMENTATION
 #define STB_IMAGE_IMPLEMENTATION
 #define STB_IMAGE_WRITE_IMPLEMENTATION
+
+#define TINYGLTF_IMPLEMENTATION
 #define TINYGLTF_NO_EXTERNAL_IMAGE
 
 #include "Graphics/Mesh.h"
@@ -9,18 +10,25 @@
 #include <assimp/scene.h>
 #include <assimp/postprocess.h> 
 #include <string>
+#include "Scene/SceneNodeTypes.h"
 
+void ProcessVertices(aiMesh* mesh, std::vector<BarinkEngine::Vertex>& out_vertices);
+void ProcessIndices(aiMesh* mesh, std::vector<unsigned int>& out_indices);
+
+namespace BarinkEngine {
 	class ModelImporter {
+
+	public:
+
+		SceneObject* Import(const std::string path);
+
+
 	private:
-	void ImportFBX(std::string path); 
-	void ImportBlend(std::string path);
-	void ImportGLTF(std::string path);
-	void ImportOBJ(std::string path);
+
 		static BarinkEngine::Mesh ModelImporter::processMesh(aiMesh* mesh, const aiScene* scene);
 		static std::vector<BarinkEngine::Mesh> ModelImporter::processNode(aiNode* node, const aiScene* scene);
 
-public:
-	void Import(std::string path);
 
-	static std::vector<BarinkEngine::Mesh> Test();
+
 	};
+}

BarinkEngine/Include/ECS/Component.h

@@ -0,0 +1,7 @@
+#pragma once
+namespace BECS {
+
+	struct Component {
+
+	};
+}

BarinkEngine/Include/ECS/Entity.h

@@ -0,0 +1,13 @@
+#pragma once
+#include <vector>
+#include "Component.h"
+
+
+namespace BECS {
+
+	typedef unsigned long int Entity;
+
+
+
+
+}

BarinkEngine/Include/ECS/System.h

@@ -0,0 +1,7 @@
+#pragma once
+namespace BECS {
+
+	struct System {
+
+	};
+}

BarinkEngine/Include/ECS/World.h

@@ -0,0 +1,17 @@
+#pragma once
+#include "System.h"
+#include <vector>
+#include "Component.h"
+#include "Entity.h"
+
+
+namespace BECS {
+	struct World {
+	
+	private:
+		std::vector<System> systems;
+		std::vector<Component> components;
+		std::vector<Entity> entities;
+
+	};
+}

BarinkEngine/Include/Graphics/Buffer.h

@@ -1,6 +1,6 @@
 #pragma once
 #include <glad/glad.h>
-class Buffer {
+class GpuBuffer {
 private:
 	unsigned int id;
 public:

BarinkEngine/Include/Graphics/Mesh.h

@@ -1,10 +1,11 @@
 #pragma once
 #include <vector>
 #include <glm/glm.hpp>
+#include "VertexArray.h"
+#include "Buffer.h"
 
 namespace BarinkEngine{
 
-
 	struct Vertex {
 		glm::vec3 vertices;
 		glm::vec2 uv;
@@ -15,6 +16,11 @@ namespace BarinkEngine{
 		std::vector<Vertex> vertices;
 		std::vector<unsigned int> elements;
 	
+	private:
+		GpuBuffer vertexBuffer;
+		GpuBuffer elementBuffer;
+		VertexArray VAO;
+		unsigned int UV_id;
 	};
 
 }

BarinkEngine/Include/Graphics/RenderSurface.h

@@ -20,8 +20,8 @@ private:
 	std::vector<unsigned int > indices;
 
 
-	Buffer vertexBuffer;
-	Buffer elementBuffer;
+	GpuBuffer vertexBuffer;
+	GpuBuffer elementBuffer;
 
 	VertexArray VAO;
 

BarinkEngine/Include/Graphics/Renderable.h

@@ -1,37 +1,23 @@
 #pragma once
 #include <vector>
 #include "Mesh.h"
-#include "Buffer.h"
+
 #include "Material.h"
 #include "Texture.h"
-#include "VertexArray.h"
+
 #include "Scene.h"
 
+namespace BarinkEngine {
 
-class Renderable  : public SceneNode {
+	class Renderable {
 	public:
-	/*
-	* NOTE: Should combine into a Mesh!!
-	*/
-	Buffer vertexBuffer;
-	Buffer elementBuffer;
-	//Buffer uv;
-	VertexArray VAO;
-
-
-	GLuint UV_id;
+		Mesh mesh;
 		Material* material;
 		Texture* texture;
 
-	
 		Shader* shader;
 
-	~Renderable();
-
-	static Renderable* Load();
-	void Draw();
-
-private:
-	std::vector<BarinkEngine::Mesh> meshes;
 		Renderable();
+		~Renderable();
 	};
+}

BarinkEngine/Include/Graphics/Transform.h

@@ -0,0 +1,11 @@
+#pragma once
+#include <glm/glm.hpp>
+struct Transform {
+	glm::vec3 Position;
+	glm::vec3 Rotation;
+	glm::vec3 Scale;
+
+	glm::mat4 ModelMatrix;
+};
+
+

BarinkEngine/Include/PerfCounter.h

@@ -3,13 +3,13 @@
 #include <imgui.h>
 
  struct EngineStatistics {
-	uint32_t lastSampleTime;
+	long long lastSampleTime;
 	float frameTime;
 	uint32_t verts;
 	uint32_t DC;
 
-	uint64_t frames;
-	uint64_t  FPS;
+	long long frames;
+	long long  FPS;
 };
 extern EngineStatistics* ES;
 
@@ -25,8 +25,8 @@ inline void SamplePerformance(void) {
 	ES->frames++; 
 	ES->DC = 0; 
 	ES->verts = 0; 
-	unsigned int  now = std::chrono::duration_cast<std::chrono::milliseconds>(std::chrono::high_resolution_clock::now().time_since_epoch()).count(); 
-	unsigned int MilliSecondsPast = now - ES->lastSampleTime; 
+	unsigned long long  now = std::chrono::duration_cast<std::chrono::milliseconds>(std::chrono::high_resolution_clock::now().time_since_epoch()).count(); 
+	unsigned long long MilliSecondsPast = now - ES->lastSampleTime; 
 	if (MilliSecondsPast >= 1000) {
 			
 			ES->frameTime = (float)1000 / ES->frames; 

BarinkEngine/Include/Scene.h

@@ -2,46 +2,22 @@
 #include <string>
 #include <vector>
 
-#include "glm/glm.hpp"
-
+#include "Graphics/Transform.h"
+#include "Scene/Node.h"
 /*
 *	Scene should be a description of a game world 
 */
-
-struct Transform {
-	glm::vec3 Position;
-	glm::vec3 Rotation;
-	glm::vec3 Scale;
-
-	glm::mat4 ModelMatrix;
-};
-
-
-class SceneNode {
-public: 
-	std::string name;
-	Transform transform;
-	SceneNode* parent;
-	std::vector<SceneNode*> children;
-
-
-	void addChild(SceneNode& node);
-
-};
-
-
 class Scene {
 
 public:
-	SceneNode& GetSceneNode(std::string);
-	SceneNode& GetRoot();
+	Node& GetSceneNode(std::string);
+	Node& GetRoot();
 
-	Scene(std::string SceneName = "Default Scene");
+	Scene(const std::string& sceneName = "Default Scene");
 	~Scene();
 
-
 private:
-	SceneNode* root;
+	Node* root;
 		
 };
 

BarinkEngine/Include/Scene/Node.h

@@ -0,0 +1,24 @@
+#pragma once
+#include <string>
+#include <vector>
+#include "Graphics/Transform.h"
+
+class Node {
+	public:
+		Node(const std::string& name);
+		std::string name;
+		Node* parent;
+		std::vector<Node*> children;
+
+		void addChild(Node& node);
+
+};
+
+
+
+class Group : public Node {
+public:
+	Group(const std::string& name);
+	Transform& transform;
+
+};

BarinkEngine/Include/Scene/SceneBuilder.h

@@ -0,0 +1,15 @@
+#pragma once
+#include "Graphics/Renderable.h"
+#include "Scene/SceneNodeTypes.h"
+
+#include <glm/glm.hpp>
+#include "../../src/Scene/SceneNodeTypes.cpp"
+/*
+* Define a helper class to more easily build a proper scene 
+*/
+static class SceneBuilder {
+
+	static Group* AddGroup(std::string name);
+	static BarinkEngine::SceneObject* AddVisual(std::string name, BarinkEngine::Renderable& object, glm::vec3 position );
+
+};

BarinkEngine/Include/Scene/SceneManager.h

@@ -0,0 +1,17 @@
+#pragma once
+#include <string>
+#include <map>
+#include "Scene.h"
+class SceneManager {
+
+public:
+	static Scene* CreateScene(const std::string& name );
+	static Scene& GetScene(const std::string& name);
+
+	static void LoadScene(Scene& scene);
+
+private:
+	static Scene* CurrentScene;
+	static std::map<std::string, Scene*> Scenes;
+
+};

BarinkEngine/Include/Scene/SceneNodeTypes.h

@@ -0,0 +1,22 @@
+#pragma once
+#include "Graphics/Camera.h"
+#include "Graphics/Renderable.h"
+#include "Scene/Node.h"
+
+namespace BarinkEngine {
+	class SceneCamera : public Group
+	{
+	public:
+		Camera& camera;
+		SceneCamera();
+	};
+
+
+	class SceneObject : public Group
+	{
+	public:
+		SceneObject(std::string name, Renderable* visual);
+		~SceneObject();
+		Renderable* renderable;
+	};
+}

BarinkEngine/Scene.cpp

@@ -1,52 +0,0 @@
-#include "Scene.h"
-
-
-SceneNode* SearchInChildren(SceneNode* root, std::string name ) {
-	
-	if (root->name == name)
-		return root;
-
-	SceneNode* found = nullptr;
-	for (auto child : root->children) {
-		found = SearchInChildren(child, name);
-	}
-	return found;
-}
-
-
-SceneNode& Scene::GetSceneNode(std::string name)
-{
-	return *SearchInChildren(root, name);
-}
-
-
-
-SceneNode& Scene::GetRoot()
-{
-	return *root;
-}
-
-Scene::Scene(std::string sceneName)
-{
-	// Create a root node
-	root = new SceneNode();
-	root->name = sceneName;
-	root->transform = Transform();
-
-	root->transform.Position	= glm::vec3(0);
-	root->transform.Rotation	= glm::vec3(0);
-	root->transform.Scale		= glm::vec3(0);
-
-	root->transform.ModelMatrix = glm::mat4(0);
-
-}
-
-Scene::~Scene()
-{	
-	// Destruct scene!
-}
-
-void SceneNode::addChild(SceneNode& node)
-{
-	children.push_back(&node);
-}

BarinkEngine/graphics/ModelImporter.cpp

@@ -1,133 +0,0 @@
-#include "AssetManager/ModelImporter.h"
-
-
-void ModelImporter::ImportFBX(std::string path)
-{
-    //spdlog::warn("ImportFBX not implemented!");
-}
-
-void ModelImporter::ImportBlend(std::string path)
-{
-    //spdlog::warn("ImportBlend not implemented!");
-}
-
-void ModelImporter::ImportGLTF(std::string path)
-{
-    //spdlog::warn("ImportGLTF not implemented!");
-}
-
-void ModelImporter::ImportOBJ(std::string path)
-{
-    //spdlog::warn("ImportOBJ not implemented!");
-}
-
-void ModelImporter::Import(std::string path)
-{
-    //spdlog::warn("Import not implemented!");
-}
-
-std::vector<BarinkEngine::Mesh> ModelImporter::Test() {
-   
-    /*
-    spdlog::info("====== Tiny GLTF ======");
-    tinygltf::Model loadedModel;
-    tinygltf::TinyGLTF loader;
-    std::string error;
-    std::string warn;
-    bool ret = loader.LoadASCIIFromFile(&loadedModel, &error, &warn, "./Build/SandboxApplication/Debug/sponza.gltf");
-
-    if (!warn.empty())
-        spdlog::warn("TinyGLTF Warning: {}", warn);
-    if (!error.empty())
-        spdlog::error("TinyGLTF Error: {}", error);
-    if (!ret) {
-        spdlog::error("TinyGLTF Error: Failed to parse glTF");
-        exit(-1);
-    }
-
-    spdlog::info("Meshes in model: {}", loadedModel.meshes.size());
-    spdlog::info("Primitives in mesh: {}", loadedModel.meshes[0].primitives.size());
-
-    */
-    
-   
-    //spdlog::info("======= Assimp ======");
-
-    Assimp::Importer importer;
-    const aiScene* scene = importer.ReadFile("build/SandboxApplication/Debug/Models/Cube.obj", aiProcess_Triangulate | aiProcess_FlipUVs);
-    
-    aiNode* currentNode = scene->mRootNode;
-
-   return processNode(currentNode, scene);
-
-
-}
-
-std::vector<BarinkEngine::Mesh> ModelImporter::processNode(aiNode* node, const aiScene* scene) {
-    std::vector<BarinkEngine::Mesh> meshes;
-    for (unsigned int i = 0; i < node->mNumMeshes; i++) {
-        aiMesh* mesh = scene->mMeshes[node->mMeshes[i]];
-        meshes.push_back(processMesh(mesh, scene));
-    }
-
-    for (unsigned int i = 0; i < node->mNumChildren; i++) {
-       auto m2 =  processNode(node->mChildren[i], scene);
-
-       for(auto m : m2) {
-           meshes.push_back(m);
-       }
-    }
-
-    return meshes;
-}
-
-BarinkEngine::Mesh ModelImporter::processMesh(aiMesh* mesh, const aiScene* scene) {
-    std::vector<unsigned int> indices;
-    std::vector<BarinkEngine::Vertex> vertices;
-
-    // Process vertices
-    for (unsigned int i = 0; i < mesh->mNumVertices; i++) {
-        BarinkEngine::Vertex v{};
-        glm::vec3 vector;
-        vector.x = mesh->mVertices[i].x;
-        vector.y = mesh->mVertices[i].y;
-        vector.z = mesh->mVertices[i].z;
-        
-        v.vertices = vector;
-        
-        if (mesh->mTextureCoords[0]) {
-
-            glm::vec2 texCoord;
-
-            texCoord.x = mesh->mTextureCoords[0][i].x;
-            texCoord.y = mesh->mTextureCoords[0][i].y;
-
-            v.uv = texCoord;
-
-        }
-    
-        vertices.push_back(v);
-    }
-
-    // Process Indices
-    for (unsigned int i = 0; i < mesh->mNumFaces; i++) {
-        aiFace face = mesh->mFaces[i];
-        if (face.mNumIndices < 3)
-            continue;
-        for (unsigned int j = 0; j < face.mNumIndices; j++) {
-            indices.push_back(face.mIndices[j]);
-        }
-    }
-
-    
-
-    BarinkEngine::Mesh result;
-    
-
-    result.vertices = vertices;
-    result.elements = indices;
-
-
-    return result;
-
-}

BarinkEngine/graphics/Renderable.cpp

@@ -1,62 +0,0 @@
-#include "Graphics/Renderable.h"
-#include "AssetManager/ModelImporter.h"
-#include "PerfCounter.h"
-
-
-Renderable* Renderable::Load()
-{
-    return new Renderable();
-}
-
-Renderable::Renderable()
-{
-    meshes = ModelImporter::Test();
-
-    transform.Scale = glm::vec3(1.0f);
-    transform.Rotation = glm::vec3(0.0f, 0.0f, 0.0f);
-    transform.Position = glm::vec3(0.0f, 0.0f, 0.0f);
-
-    VAO.Create();
-    VAO.Bind();
-
-
-    vertexBuffer.createBuffer();
-    vertexBuffer.Bind(false);
-    vertexBuffer.setBufferData(&meshes[0].vertices[0], meshes[0].vertices.size() * sizeof(BarinkEngine::Vertex), false);   
-
-    elementBuffer.createBuffer();
-    elementBuffer.Bind(true);
-    elementBuffer.setBufferData(&meshes[0].elements[0], meshes[0].elements.size() * sizeof(unsigned int), true);
-
-    VAO.AttachAttribute(0, 3, sizeof(BarinkEngine::Vertex));
-
-   glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, sizeof(BarinkEngine::Vertex),(void* )offsetof(BarinkEngine::Vertex, vertices));
-   glEnableVertexAttribArray(1);
-    
-   vertexBuffer.Unbind(false);
-  
-   VAO.Unbind();
-
-
-}
-
-Renderable::~Renderable()
-{
-    glDeleteBuffers(1, &UV_id);
-}
-
-void Renderable::Draw()
-{
-    VAO.Bind();
-    elementBuffer.Bind(true);
-
-    glActiveTexture(GL_TEXTURE0);
-    glUniform1i(glGetUniformLocation(shader->id, "Texture"), GL_TEXTURE0);
-    texture->Bind();
-
-    ES->verts = meshes[0].vertices.size();
-    ES->DC++;
-    glDrawElements(GL_TRIANGLES, static_cast<unsigned int>(meshes[0].elements.size()), GL_UNSIGNED_INT, NULL);
-    VAO.Unbind();
-
-}

BarinkEngine/premake5.lua

@@ -52,10 +52,10 @@ project "BarinkEngine"
   files {
     "../libs/glad/src/glad.c",
 
-    "./*.cpp",
-    "./*.h",
-    "./**/*.cpp",
-    "./**/*.h"
+    "./src/*.cpp",
+    "./Include/*.h",
+    "./src/**/*.cpp",
+    "./Include/**/*.h"
   }
 
 

BarinkEngine/src/Graphics/Buffer.cpp

@@ -1,15 +1,15 @@
 #include "Graphics/Buffer.h"
 
 
-int Buffer::getBufferID() {
+int GpuBuffer::getBufferID() {
 	return id;
 }
 
-void Buffer::createBuffer() {
+void GpuBuffer::createBuffer() {
 	glGenBuffers(1, (GLuint*) &id);
 }
 
-void Buffer::setBufferData(void* data, size_t dataSize, bool elementBuffer = false ) {
+void GpuBuffer::setBufferData(void* data, size_t dataSize, bool elementBuffer = false ) {
 	
 	if (elementBuffer) {
 		glBufferData(GL_ELEMENT_ARRAY_BUFFER, dataSize, data, GL_STATIC_DRAW);
@@ -21,7 +21,7 @@ void Buffer::setBufferData(void* data, size_t dataSize, bool elementBuffer = fal
 
 }
 
-void Buffer::Bind(bool elementBuffer = false ) {
+void GpuBuffer::Bind(bool elementBuffer = false ) {
 	if (elementBuffer) {
 		glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, id);
 
@@ -32,7 +32,7 @@ void Buffer::Bind(bool elementBuffer = false ) {
 	}
 }
 
-void Buffer::Unbind(bool elementBuffer = false) {
+void GpuBuffer::Unbind(bool elementBuffer = false) {
 	if (elementBuffer) {
 		glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
 	}
@@ -42,6 +42,6 @@ void Buffer::Unbind(bool elementBuffer = false) {
 	}
 }
 
-void Buffer::Delete() {
+void GpuBuffer::Delete() {
 	glDeleteBuffers(1, (GLuint*) &id);
 }

BarinkEngine/src/Graphics/ModelImporter.cpp

@@ -0,0 +1,94 @@
+#include "AssetManager/ModelImporter.h"
+
+
+BarinkEngine::SceneObject* BarinkEngine::ModelImporter::Import(const std::string path)
+{
+    
+    SceneObject* root = new SceneObject(std::string(path), nullptr);
+
+    Assimp::Importer importer;
+    const aiScene* scene = importer.ReadFile(path, aiProcess_Triangulate | aiProcess_FlipUVs);
+
+    aiNode* currentNode = scene->mRootNode;
+
+    std::vector<BarinkEngine::Mesh> meshes =  processNode(currentNode, scene);
+
+    return root;
+
+}
+
+std::vector<BarinkEngine::Mesh> BarinkEngine::ModelImporter::processNode(aiNode* node, const aiScene* scene) 
+{
+
+    std::vector<BarinkEngine::Mesh> meshes;
+
+    for (unsigned int i = 0; i < node->mNumMeshes; i++) {
+        aiMesh* mesh = scene->mMeshes[node->mMeshes[i]];
+        meshes.push_back(processMesh(mesh, scene));
+    }
+
+    for (unsigned int i = 0; i < node->mNumChildren; i++) {
+       auto m2 =  processNode(node->mChildren[i], scene);
+
+       for(auto m : m2) {
+           meshes.push_back(m);
+       }
+    }
+
+    return meshes;
+}
+
+BarinkEngine::Mesh BarinkEngine::ModelImporter::processMesh(aiMesh* mesh, const aiScene* scene) {
+    std::vector<unsigned int> indices;
+    std::vector<BarinkEngine::Vertex> vertices;
+
+    ProcessVertices(mesh, vertices);
+    
+    ProcessIndices(mesh, indices);
+
+    BarinkEngine::Mesh result;
+    result.vertices = vertices;
+    result.elements = indices;
+
+
+    return result;
+
+}
+
+void ProcessVertices(aiMesh* mesh, std::vector<BarinkEngine::Vertex>& out_vertices) {
+    // Process vertices
+    for (unsigned int i = 0; i < mesh->mNumVertices; i++) {
+        BarinkEngine::Vertex v{};
+        glm::vec3 vector;
+        vector.x = mesh->mVertices[i].x;
+        vector.y = mesh->mVertices[i].y;
+        vector.z = mesh->mVertices[i].z;
+
+        v.vertices = vector;
+
+        if (mesh->mTextureCoords[0]) {
+
+            glm::vec2 texCoord;
+
+            texCoord.x = mesh->mTextureCoords[0][i].x;
+            texCoord.y = mesh->mTextureCoords[0][i].y;
+
+            v.uv = texCoord;
+
+        }
+
+        out_vertices.push_back(v);
+    }
+}
+
+void ProcessIndices(aiMesh* mesh, std::vector<unsigned int>& out_indices) {
+    // Process Indices
+    for (unsigned int i = 0; i < mesh->mNumFaces; i++) {
+        aiFace face = mesh->mFaces[i];
+        if (face.mNumIndices < 3)
+            continue;
+        for (unsigned int j = 0; j < face.mNumIndices; j++) {
+            out_indices.push_back(face.mIndices[j]);
+        }
+    }
+}

BarinkEngine/src/Graphics/Renderable.cpp

@@ -0,0 +1,53 @@
+#include "Graphics/Renderable.h"
+#include "AssetManager/ModelImporter.h"
+#include "PerfCounter.h"
+
+
+BarinkEngine::Renderable::Renderable()
+{
+    /*
+    
+        VAO.Create();
+        VAO.Bind();
+
+    
+        vertexBuffer.createBuffer();
+        vertexBuffer.Bind(false);
+        vertexBuffer.setBufferData(&meshes[0].vertices[0], meshes[0].vertices.size() * sizeof(BarinkEngine::Vertex), false);   
+
+        elementBuffer.createBuffer();
+        elementBuffer.Bind(true);
+        elementBuffer.setBufferData(&meshes[0].elements[0], meshes[0].elements.size() * sizeof(unsigned int), true);
+
+        VAO.AttachAttribute(0, 3, sizeof(BarinkEngine::Vertex));
+    
+        glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, sizeof(BarinkEngine::Vertex),(void* )offsetof(BarinkEngine::Vertex, vertices));
+        glEnableVertexAttribArray(1);
+    
+        //vertexBuffer.Unbind(false);
+  
+        VAO.Unbind();
+    */
+
+}
+
+BarinkEngine::Renderable::~Renderable()
+{
+   // glDeleteBuffers(1, &UV_id);
+}
+
+// Draw call Example !!
+/*
+        VAO.Bind();
+        elementBuffer.Bind(true);
+
+        glActiveTexture(GL_TEXTURE0);
+        glUniform1i(glGetUniformLocation(shader->id, "Texture"), GL_TEXTURE0);
+        texture->Bind();
+
+        ES->verts = meshes[0].vertices.size();
+        ES->DC++;
+        glDrawElements(GL_TRIANGLES, static_cast<unsigned int>(meshes[0].elements.size()), GL_UNSIGNED_INT, NULL);
+        VAO.Unbind();
+    */
+    

BarinkEngine/src/Graphics/Renderer.cpp

@@ -14,7 +14,7 @@ void BarinkEngine::Renderer::Render()
 {
 
 	for (auto model : models) {
-		model->Draw();
+		//model->Draw();
 	}
 
 }

BarinkEngine/src/Scene.cpp

@@ -0,0 +1,66 @@
+#include "Scene.h"
+#include "Scene.h"
+#include "Scene/Node.h"
+void DeleteSubGraph(Node* tree);
+
+Scene::Scene(const std::string& sceneName)
+{
+	// Create a root node
+	root = new Group(sceneName);
+}
+
+Scene::~Scene()
+{
+	// Delete all nodes in the graph.
+	DeleteSubGraph(root);
+
+}
+
+
+Node* SearchInChildren(Node* root, const std::string name ) {
+	
+	if (root->name == name)
+		return root;
+
+	Node* found = nullptr;
+	for (auto child : root->children) {
+		found = SearchInChildren(child, name);
+	}
+	return found;
+}
+
+
+Node& Scene::GetSceneNode(std::string name)
+{
+	return *SearchInChildren(root, name);
+}
+
+
+
+Node& Scene::GetRoot()
+{
+	return *root;
+}
+
+
+
+void Node::addChild(Node& node)
+{
+	children.push_back(&node);
+}
+
+
+void DeleteSubGraph(Node* tree)
+{
+	if (tree->children.size() == 0) {
+		delete tree;
+		return;
+	}
+
+	for (auto child : tree->children) {
+		if (child->children.size() > 0) {
+			DeleteSubGraph(child);
+		}
+	}
+
+}

BarinkEngine/src/Scene/Node.cpp

@@ -0,0 +1,7 @@
+#include "Scene/Node.h"
+
+Node::Node(const std::string& name) 
+	: name(name), parent(nullptr), children(std::vector<Node*>()) {}
+
+Group::Group(const std::string& name ) 
+	: Node(name), transform(Transform()) {}

BarinkEngine/src/Scene/SceneManager.cpp

@@ -0,0 +1,22 @@
+#include "Scene/SceneManager.h"
+
+Scene* SceneManager::CreateScene(const std::string& name) 
+{
+	/*
+	Scenes = std::map<std::string, Scene*>();
+	SceneManager::Scenes[name] = new Scene(name);
+	*/
+
+	return new Scene(name);
+}
+
+Scene& SceneManager::GetScene(const std::string& name) 
+{
+	return Scene();
+	//return *SceneManager::Scenes[name];
+}
+
+void SceneManager::LoadScene( Scene& scene) 
+{
+	//SceneManager::CurrentScene = &scene;
+}

BarinkEngine/src/Scene/SceneNodeTypes.cpp

@@ -0,0 +1,12 @@
+#include "Scene/SceneNodeTypes.h"
+
+BarinkEngine::SceneCamera::SceneCamera()
+	: Group(std::string("Camera")), camera(Camera(glm::vec3(0.0f), glm::vec3(0.0f), 0))
+{}
+
+BarinkEngine::SceneObject::SceneObject(std::string name, Renderable* visual)
+	: Group(name), renderable(visual)
+{}
+
+BarinkEngine::SceneObject::~SceneObject() 
+{}

SandboxApplication/GUI.cpp

@@ -1,5 +1,35 @@
 #include "GUI.h"
 
+void SceneExplorer(Scene& scene, std::string PanelName) {
+    if (ImGui::Begin(PanelName.c_str())) {
+        ImGui::ListBoxHeader("##ObjectList");
+
+        Node& current = scene.GetRoot();
+
+        Node* next = &current;
+
+        // Show first node
+        ImGui::Selectable(next->name.c_str(), true);
+
+        ImGui::Indent();
+
+        if (next->children.size() != 0) {
+            for (auto child : next->children)
+            {
+                std::string& name = child->name;
+                ImGui::Selectable(name.c_str(), false);
+            }
+        }
+
+        ImGui::ListBoxFooter();
+
+      
+    }  
+    ImGui::End();
+
+    
+}
+
 void CameraTool(Camera* cam) {
 
     ImGui::Begin("Camera");

SandboxApplication/GUI.h

@@ -6,3 +6,4 @@ void CameraTool(Camera* camera);
 void ScriptingTool(char* code);
 void transformWindow(Transform& transform, std::string PanelName);
 void materialWindow(Material& material, std::string PanelName);
+void SceneExplorer(Scene& scene, std::string PanelName);

SandboxApplication/Sandbox.cpp

@@ -1,4 +1,8 @@
 #include "BarinkEngine.h"
+#include "Scene\SceneManager.h"
+#include "Scene\SceneNodeTypes.h"
+#include "AssetManager/ModelImporter.h"
+
 #include "imgui.h"
 #include "GUI.h"
 #include "Util.h"
@@ -7,86 +11,50 @@
 * Define globals
 */
 Camera* cam;
-
-
 Shader* shader;
 
-Renderable* Cube;
-Material* matCube;
-Texture* textureCube;
-
-Renderable* Cube2;
-Material* matCube2;
-
 char* code = new char[254];
 
-
 const std::string vertexShaderSource = "build/SandboxApplication/Debug/test.vs";
 const std::string fragmentShaderSource = "build/SandboxApplication/Debug/test.fs";
 
+BarinkEngine::ModelImporter* MI = new BarinkEngine::ModelImporter();
 
+Scene* Level1;
 
 /*
 * Runs once at startup 
 * - USe to initialize the game/sandbox/demo
 */
 void Start() {
+    // Build a basic test scene 
+    // NOTE: This will later be done through an editor 
 
-    /*
-        Building a very basic scene graph
-    */
-    SceneNode MyCube = SceneNode();
-    MyCube.name = "MyCube";
+    // Create a level and load it as the current level
+    std::string levelName("Test Level");
+    Level1 = SceneManager::CreateScene(levelName);
+    SceneManager::LoadScene(*Level1);
 
-    SceneNode MyBaby = SceneNode();
-    MyBaby.name = "Baby";
+    // Create a cube node
    
-    SceneNode MySecondCube = SceneNode();
-    MySecondCube.name = "MySecondCube";
+    // Load a model 
+    // *(MI->Import("build/SandboxApplication/Debug/Models/Cube.obj"))
 
+    std::string groupName("Nested-Group");
+    auto testGroup = new Group(groupName);
+    Level1->GetRoot().addChild( *testGroup);
 
-    MyCube.addChild(MyBaby);
-
-    
-    Scene scene = Scene("My awesome Game Scene");
-    scene.GetRoot().addChild(MyCube);
-    scene.GetRoot().addChild(MySecondCube);
-
+    std::string group2Name("Nested-Group2");
+    auto testGroup2 = new Group(group2Name);
+    Level1->GetRoot().addChild(*testGroup2);
 
     // Walk scene graph
-    PrintSceneTree(scene.GetRoot(),0);
+    PrintSceneTree(Level1->GetRoot(),0);
 
     shader = new Shader(vertexShaderSource, fragmentShaderSource);
-
-    textureCube = new Texture("build/SandboxApplication/Debug/Textures/wall.jpg");
-
-    matCube = new Material(*shader);
-    matCube->Color = glm::vec3(1.0, 0.0, 0.0);
-
-    matCube2 = new Material(*shader);
-    matCube2->Color = glm::vec3(0.0, 1.0f, 0.0);
-
-    /*
-    * load meshes 
-    */
-    Cube = Renderable::Load();
-    Cube2 = Renderable::Load();
-    Cube->addChild(*Cube2);
-
-    Cube->shader = shader;
-    Cube2->shader = shader;
-
-    Cube->texture = textureCube;
-    Cube2->texture = textureCube;
-
-    Cube2->transform.Position = glm::vec3(-9.0f, 0.0f, 0.0f);
-
-    Cube->transform.Position = glm::vec3(-8.0f, 0.0f, -2.0f);
-
     cam = new Camera(glm::vec3(0.0f, 1.5f, 0.0f), glm::vec3(0.0f, 0.0f, 0.0f), 90.0f);
 
     memset(code, '\0', 254);
-
 }
 
 
@@ -101,24 +69,14 @@ void ImmediateGraphicsDraw() {
     // at possible GUI elements to use
     ImGui::ShowDemoWindow();
 
-
     // Show internal BarinkEngine stats
     ShowStats();
 
-
     // Show different tooling for this specific sandbox
     CameraTool(cam);
     ScriptingTool(code);
 
-    transformWindow(Cube->transform, "Transform (Cube)");
-
-    transformWindow(Cube2->transform, "Transform (Cube2)");
-
-    materialWindow(*matCube, "Material Cube");
-    materialWindow(*matCube2, "Material Cube2");
-
-
-
+    SceneExplorer(*Level1, "Scene Explorer");
 }
 
 /*
@@ -127,8 +85,6 @@ void ImmediateGraphicsDraw() {
 */
 void Update()
 {
-
-
     /*
     * NOTE: this needs to move to the renderer
     * Render code should not appear in the sandbox file
@@ -139,16 +95,16 @@ void Update()
 
     shader->Use();
     shader->setUniformMat4("P", projection);
-    shader->setUniformMat4("M", CalculateModelMat(Cube->transform));
+    //shader->setUniformMat4("M", CalculateModelMat(Cube->transform));
     shader->setUniformMat4("V", cam->GetViewMatrix());
-    matCube->Apply();
+    //matCube->Apply();
 
-    Cube->Draw();
+    //Cube->Draw();
 
-    shader->setUniformMat4("M", CalculateModelMat(Cube2->transform));
-    matCube2->Apply();
+    //shader->setUniformMat4("M", CalculateModelMat(Cube2->transform));
+   // matCube2->Apply();
 
-    Cube2->Draw();
+    //Cube2->Draw();
 
 }
 
@@ -157,18 +113,6 @@ void Update()
 * - Meant for cleanup
 */
 void Stop() {
-    // Cleanup
-    Cube->VAO.Delete();
-    Cube->elementBuffer.Delete();
-
-    Cube2->VAO.Delete();
-    Cube2->elementBuffer.Delete();
-
-    delete Cube2;
-    delete Cube;
-
-    delete matCube;
-    delete matCube2;
-
+    delete MI;
     delete shader;
 }

SandboxApplication/Util.cpp

@@ -1,6 +1,6 @@
 #include "Util.h"
 
-void PrintSceneTree(SceneNode& node, int depth) {
+void PrintSceneTree(Node& node, int depth) {
     // Indent name based on depth
     std::cout << " ";
     for (int i = 0; i < depth; i++) {

SandboxApplication/Util.h

@@ -1,6 +1,6 @@
 #pragma once
 #include "BarinkEngine.h"
 
-void PrintSceneTree(SceneNode& node, int depth);
+void PrintSceneTree(Node& node, int depth);
 
 glm::mat4 CalculateModelMat(Transform& transform);