Add Asset system

- Add Abstract Asset class which defines Assets
- Add AssetManager class to keep track of all the Asset
- Add AssetFile class to cache the asset without loading it
- Add UUID class to uniquely identify assets
- Add MetaFile class to load meta asset files

CopiumEngine/src/copium/core/Application.cpp

@@ -3,6 +3,7 @@
 #include "copium/core/Vulkan.h"
 #include "copium/mesh/Vertex.h"
 #include "copium/mesh/VertexPassthrough.h"
+#include "copium/asset/AssetManager.h"
 
 #include <glm/gtc/matrix_transform.hpp>
 
@@ -49,6 +50,8 @@ namespace Copium
   Application::~Application()
   {
     vkDeviceWaitIdle(Vulkan::GetDevice());
+    AssetManager::UnloadAsset(texture2D);
+    AssetManager::UnloadAsset(texture2D2);
   }
 
   bool Application::Update()
@@ -81,8 +84,8 @@ namespace Copium
 
   void Application::InitializeTextureSampler()
   {
-    texture2D = std::make_unique<Texture2D>("res/textures/texture.png");
-    texture2D2 = std::make_unique<Texture2D>("res/textures/texture2.png");
+    texture2D = AssetManager::LoadAsset("fox.meta");
+    texture2D2 = AssetManager::LoadAsset("fox2.meta");
   }
 
   void Application::InitializeDescriptorSets()
@@ -90,7 +93,7 @@ namespace Copium
     descriptorPool = std::make_unique<DescriptorPool>();
 
     descriptorSet = graphicsPipeline->CreateDescriptorSet(*descriptorPool, 0);
-    descriptorSet->SetSampler(*texture2D, 1);
+    descriptorSet->SetSampler(AssetManager::GetAsset<Texture2D>(texture2D), 1);
 
     descriptorSetPassthrough = graphicsPipelinePassthrough->CreateDescriptorSet(*descriptorPool, 0);
     descriptorSetPassthrough->SetSampler(framebuffer->GetColorAttachment(), 0);
@@ -144,8 +147,8 @@ namespace Copium
         renderer->Quad(glm::vec2{-1 + x * 0.2 + 0.05, -1 + y * 0.2 + 0.05}, glm::vec2{0.1, 0.1}, glm::vec3{x * 0.1, y * 0.1, 1.0});
       }
     }
-    renderer->Quad(glm::vec2{-0.9, -0.4}, glm::vec2{0.8, 0.8}, *texture2D);
-    renderer->Quad(glm::vec2{ 0.1, -0.4}, glm::vec2{0.8, 0.8}, *texture2D2);
+    renderer->Quad(glm::vec2{-0.9, -0.4}, glm::vec2{0.8, 0.8}, AssetManager::GetAsset<Texture2D>(texture2D));
+    renderer->Quad(glm::vec2{ 0.1, -0.4}, glm::vec2{0.8, 0.8}, AssetManager::GetAsset<Texture2D>(texture2D2));
     renderer->End();
 
     framebuffer->Unbind(*commandBuffer);

CopiumEngine/src/copium/core/Application.h

@@ -1,12 +1,12 @@
 #pragma once
 
+#include "copium/asset/AssetMeta.h"
 #include "copium/buffer/Framebuffer.h"
 #include "copium/mesh/Mesh.h"
 #include "copium/pipeline/DescriptorPool.h"
 #include "copium/pipeline/DescriptorSet.h"
 #include "copium/pipeline/Pipeline.h"
 #include "copium/renderer/Renderer.h"
-#include "copium/sampler/Texture2D.h"
 
 namespace Copium
 {
@@ -16,8 +16,8 @@ namespace Copium
   private:
     std::unique_ptr<Renderer> renderer;
     std::unique_ptr<Framebuffer> framebuffer;
-    std::unique_ptr<Texture2D> texture2D;
-    std::unique_ptr<Texture2D> texture2D2;
+    AssetHandle texture2D;
+    AssetHandle texture2D2;
     std::unique_ptr<DescriptorPool> descriptorPool;
     std::unique_ptr<DescriptorSet> descriptorSet;
     std::unique_ptr<DescriptorSet> descriptorSetPassthrough;

CopiumEngine/src/copium/core/Vulkan.cpp

@@ -1,5 +1,7 @@
 #include "copium/core/Vulkan.h"
 
+#include "copium/asset/AssetManager.h"
+
 namespace Copium
 {
   std::unique_ptr<Instance> Vulkan::instance;
@@ -10,13 +12,19 @@ namespace Copium
   void Vulkan::Initialize()
   {
     instance = std::make_unique<Instance>("Copium Engine");
-    window = std::make_unique<Window>( "Copium Engine", 1920, 1080, Window::Mode::Windowed);
+    window = std::make_unique<Window>("Copium Engine", 1920, 1080, Window::Mode::Windowed);
     device = std::make_unique<Device>();
     swapChain = std::make_unique<SwapChain>();
+
+    // TODO: Make the working directory always be relative to the assets folder
+    //       By looking at where the executable is, since that should always be in the bin folder (it currently isn't though)
+    AssetManager::RegisterAssetDir("assets/");
   }
 
   void Vulkan::Destroy()
   {
+    AssetManager::UnregisterAssetDir("assets/");
+    AssetManager::Cleanup();
     swapChain.reset();
     device.reset();
     window.reset();