Import / Export Meshes

Editor/src/AssetManagement/Asset.h

@@ -0,0 +1,47 @@
+#pragma once
+#include <string>
+#include "../../YoggieEngine/src/Graphics/Primitives/Mesh.h"
+#include "../../YoggieEngine/src/Graphics/Primitives/Texture.h"
+#include "../../../YoggieEngine/src/Scene/UUID.h"
+typedef uint64_t ASSET_UUID ;
+
+enum class ASSET_TYPE {
+	Unknown = -1,
+	Mesh,
+	Texture,
+	Material
+};
+
+class Asset {
+public:
+	Asset(const char* name): ID(UUID::Generate()), name(std::string(name)) {}
+	virtual ASSET_TYPE GetType() = 0;
+protected:
+	std::string& name;
+	ASSET_UUID ID;
+
+};
+
+class MeshAsset : Asset {
+public:
+	MeshAsset(YoggieEngine::Mesh mesh) : Asset("New MeshAsset"), mesh(mesh) {}
+	ASSET_TYPE  GetType() override { return ASSET_TYPE::Mesh; }
+private:
+	YoggieEngine::Mesh& mesh;
+};
+
+class TextureAsset : Asset {
+public:
+	TextureAsset (YoggieEngine::Texture texture): Asset("New TextureAsset"), texture(texture) {}
+	ASSET_TYPE GetType() override { return ASSET_TYPE::Texture; }
+private:
+	YoggieEngine::Texture& texture;
+};
+
+class MaterialAsset : Asset {
+public:
+	MaterialAsset ()  : Asset("New MaterialAsset"){}
+	ASSET_TYPE GetType() override { return ASSET_TYPE::Material; }
+private:
+
+};

Editor/src/AssetManagement/AssetManager.h

@@ -0,0 +1,118 @@
+#pragma once
+#include <filesystem>
+#include <fstream>
+
+#include "../../../YoggieEngine/src/Graphics/Renderable.h"
+#include "../../../YoggieEngine/src/AssetManager/ModelImporter.h"
+#include <spdlog/spdlog.h>
+#include <iostream>
+
+class AssetManager {
+public:
+
+	static YoggieEngine::Mesh* LoadFromAssetFile(const std::filesystem::path assetPath )
+	{
+		YoggieEngine::Mesh imported;
+
+		std::ifstream AssetFile;
+		AssetFile.open(assetPath, std::ios::binary);
+		if (AssetFile.is_open()) {
+
+			char* Header = (char*) malloc(8);
+			unsigned long long  Vsize = 0;
+			uint32_t Vnum = 0;
+			uint32_t Enum = 0;
+
+			// Read header 
+			AssetFile.read(Header, 8);
+			AssetFile.read((char*)&Vsize, sizeof(unsigned long long ));
+			AssetFile.read((char*)&Vnum, sizeof(uint32_t));
+			AssetFile.read((char*)&Enum, sizeof(uint32_t));
+
+			// print Header info 
+			std::cout << "File has header: " << Header << std::endl;
+			std::cout << "Vertex size: " << Vsize << std::endl;
+			std::cout << "Number of Vertices: " << Vnum << std::endl;
+			std::cout << "Number of Elements: " << Enum << std::endl;
+			free(Header);
+
+			// Load Vertices (Vertex + UV )
+			imported.vertices = std::vector < YoggieEngine::Vertex>();
+			for (int i = 0; i < Vnum; i++) 
+			{
+				YoggieEngine::Vertex data = YoggieEngine::Vertex();
+				AssetFile.read((char*) & data, Vsize);
+
+				imported.vertices.push_back(data);
+			
+			}
+
+			// skip x bytes 
+			AssetFile.ignore(sizeof(char) * 3);
+
+			// Load Elements
+			imported.elements = std::vector<unsigned int>();
+			for (int i = 0; i < Enum; i++) {
+				unsigned int data = 0;
+				AssetFile.read((char*)&data, sizeof(unsigned int));
+				imported.elements.push_back(data);
+			}
+
+		}
+		else {
+			std::cout << "Failed ot open mesh " << std::endl;
+		}
+
+
+		return nullptr;
+
+
+	}
+
+	static YoggieEngine::Renderable* LoadFromSource(const std::filesystem::path srcPath , const std::filesystem::path assetFolder ) {
+		auto model = (YoggieEngine::ModelImporter()).Import(srcPath.string());
+		YoggieEngine::Mesh* exportMesh = model->renderable->mesh;
+		std::filesystem::path MeshFileName = assetFolder / srcPath.filename().replace_extension( ".mesh");
+		std::cout << "Save path: " << MeshFileName << std::endl;
+
+		std::ofstream meshAsset;
+		meshAsset.open(MeshFileName, std::ios::binary );
+		if (meshAsset.is_open()) {
+
+			// write a header
+			static const char* HEADER = "MESH";
+			meshAsset.write(HEADER, sizeof(HEADER));
+			auto Vsize = sizeof(YoggieEngine::Vertex);
+			std::cout << "size of vertex: " << Vsize << std::endl;
+			std::cout << "Addr of vSize: " << &Vsize << std::endl;
+			auto Vnum = exportMesh->vertices.size();
+			auto Enum = exportMesh->elements.size();
+
+			meshAsset.write((char*) & Vsize, sizeof(unsigned long long ) );
+			meshAsset.write((char*)&Vnum, sizeof(uint32_t));
+			meshAsset.write((char*)&Enum, sizeof(uint32_t));
+			// write all vertices 
+			for (auto vertice : exportMesh->vertices)
+			{
+				meshAsset.write((char*)&vertice, sizeof(vertice));
+			}
+
+			// write 3 x 0 byte
+			meshAsset.write((const char*)"\0\0\0", sizeof(char) * 3);
+
+			// write all indices 
+			for (auto index : exportMesh->elements) {
+				meshAsset.write((char*)&index, sizeof(index));
+			}
+
+
+			meshAsset.close();
+		}
+		else {
+			spdlog::error("Failed to create/open mesh file.");
+		}
+
+		return model->renderable;
+
+	}
+};

Editor/src/app.cpp

@@ -10,10 +10,11 @@
 #include <glm/gtc/matrix_transform.hpp>
 
 #include "UI/Widgets.h"
-#include "Project.h"
+#include "Project/Project.h"
 #include "SceneSerializer.h"
 #include "EditorContext.h"
 #include "SceneRuntime.h"
+#include "AssetManagement/AssetManager.h"
 
 const unsigned int MS_PER_UPDATE = 2;
 
@@ -23,7 +24,6 @@ public:
     void Run() override
     {
         BarinkWindow mainWindow = BarinkWindow(1200, 700);
-        
         InputSystem = new InputManager();
         renderer = new Renderer();
 
@@ -46,6 +46,7 @@ public:
             previous = current;
             lag += elapsed;
 
+
             InputSystem->PollEvents();
 
             while (lag >= MS_PER_UPDATE) 
@@ -213,10 +214,44 @@ public:
 
             }
 
-            if (ImGui::MenuItem("Add Entity")) {
+            if (ImGui::MenuItem("Add Entity"))
+            {
                 activeRuntime.MainScene.AddEntity("New Entity");
             }
 
+            if (ImGui::MenuItem("Import Model")) 
+            {
+                auto result = NFD_OpenDialog(  "obj,fbx,gltf" , NULL, &modelImportPath);
+                switch (result) {
+                case(NFD_OKAY):
+                    // Import Model
+                    AssetManager::LoadFromSource(modelImportPath, ".");
+                    break;
+                case(NFD_CANCEL):
+                    break;
+                case(NFD_ERROR):
+                    std::cout << "NFD_Error: " << NFD_GetError() << std::endl;
+                    break;
+                }
+            }
+
+            if (ImGui::MenuItem("Import MeshAsset (temp)")) 
+            {
+                auto result = NFD_OpenDialog("mesh", NULL, &modelImportPath);
+                switch (result) {
+                case(NFD_OKAY):
+                    AssetManager::LoadFromAssetFile(modelImportPath);
+                    break;
+                case(NFD_CANCEL):
+                    break;
+                case(NFD_ERROR):
+                    break;
+                }
+
+            }
+
+
+
             ImGui::EndMenu();
         }
 
@@ -252,6 +287,7 @@ private:
     char* savePath = nullptr;
     char* scenePath = nullptr;
     char* openScenePath = nullptr;
+    char* modelImportPath = nullptr;
 
 
 };