add msg to emit

src/event/event_manager.hpp

@@ -19,9 +19,9 @@ namespace VE
         hack::warn()("funs is empty");
         return;
       }
-      else
+      else if (!e.m_msg.empty())
       {
-        hack::warn()("run emit");
+        hack::warn()("EMIT MSG:", e.m_msg);
       }
 
       std::size_t i = 0;