Begin work on Snow::Manager

src/snow/manager.cpp

@@ -0,0 +1,11 @@
+#include "manager.h"
+#include <memory>
+
+namespace Snow {
+
+Manager::Manager() = default;
+
+void Manager::NewSnow() { std::make_unique<Snow>(); }
+void Manager::Update() {}
+
+} // namespace Snow

src/snow/manager.h

@@ -1,3 +1,17 @@
+#include "snow.h"
+#include <memory>
+#include <vector>
+
 namespace Snow {
-class Manager {};
+class Manager {
+public:
+  Manager();
+  void NewSnow();
+  void Update();
+  void Draw();
+  ~Manager();
+
+private:
+  std::vector<std::unique_ptr<Snow>> snows;
+};
 } // namespace Snow