memory setup

src/game/Global.cpp

@@ -0,0 +1,33 @@
+#include "Global.h"
+#include <cassert>
+
+namespace
+{
+  SharedData* SharedInstance = nullptr;
+  Game::GameInstance* GameInst = nullptr;
+}
+
+namespace Game
+{
+  SharedData& GetShared()
+  {
+    assert(SharedInstance != nullptr);
+    return *SharedInstance;
+  }
+
+  void SetShared(SharedData& instance)
+  {
+    SharedInstance = &instance;
+  }
+
+  GameInstance& GetInstance()
+  {
+    assert(GameInst != nullptr);
+    return *GameInst;
+  }
+
+  void SetInstance(Game::GameInstance& instance)
+  {
+    GameInst = &instance;
+  }
+}