implemented basic shader expressions

src/Engine/Platform/CMakeLists.txt

@@ -0,0 +1 @@
+add_subdirectory(Windows/)

src/Engine/Platform/Windows/CMakeLists.txt

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+target_sources(Engine
+    PRIVATE
+        GameInterface.h
+        GameInterface.cpp)
+
+
+target_sources(Engine
+    PUBLIC FILE_SET HEADERS
+        FILES
+            GameInterface.h)

src/Engine/Platform/Windows/GameInterface.cpp

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+#include "GameInterface.h"
+
+using namespace Seele;
+
+GameInterface::GameInterface(std::string dllPath)
+    : dllPath(dllPath)
+{
+}
+
+GameInterface::~GameInterface()
+{
+    
+}
+
+Game* GameInterface::getGame()
+{
+    return game;
+}
+
+void GameInterface::reload(AssetRegistry* registry)
+{
+    if(lib != NULL)
+    {
+        destroyInstance(game);
+        FreeLibrary(lib);
+    }
+    lib = LoadLibraryA(dllPath.c_str());
+    createInstance = (decltype(createInstance))GetProcAddress(lib, "createInstance");
+    destroyInstance = (decltype(destroyInstance))GetProcAddress(lib, "destroyInstance");
+    game = createInstance(registry);
+}

src/Engine/Platform/Windows/GameInterface.h

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+#pragma once
+#include "Game.h"
+#include "Windows.h"
+
+namespace Seele
+{
+class GameInterface
+{
+public:
+    GameInterface(std::string dllPath);
+    ~GameInterface();
+    Game* getGame();
+    void reload(AssetRegistry* registry);
+private:
+    HMODULE lib = NULL;
+    std::string dllPath;
+    Game* game;
+    Game* (*createInstance)(AssetRegistry*) = nullptr;
+    void (*destroyInstance)(Game*) = nullptr;
+};
+} // namespace Seele