add new struct and events

src/event/event_manager.hpp

@@ -0,0 +1,41 @@
+#pragma once
+
+#include <hack/patterns/singleton.hpp>
+#include <hack/logger/logger.hpp>
+
+#include "event.hpp"
+#include "utils/using.hpp"
+
+namespace VE
+{
+  struct event_manager : public hack::patterns::singleton<event_manager>
+  {
+    std::vector<event_fn<event>> m_funcs;
+
+    template<typename T>
+    void connect(T* obj, void (T::*method)(event)) 
+    {
+      m_funcs.push_back(std::bind(method, obj, std::placeholders::_1));
+    }
+
+    void emit(event e)
+    {
+      try
+      {
+        for (std::size_t i = 0; i < m_funcs.size(); ++i)
+        {
+          m_funcs[i](e);
+        }
+      }
+      catch(const std::exception& ex)
+      {
+        hack::error()(ex.what());
+        hack::log()("size funcs", m_funcs.size());
+      }
+      catch(...)
+      {
+        hack::error()("ooops...");
+      }
+    }
+  };
+}