add event bus

src/Event.h

@@ -0,0 +1,47 @@
+#ifndef ALAI_EVENT_H
+#define ALAI_EVENT_H
+
+#include <Godot.hpp>
+#include <Node.hpp>
+
+namespace alai
+{
+    /**
+     * @brief This class provides an event bus for the project.
+     * 
+     * @details This class should be an auto-loaded singleton for the project.
+     * To use this use Event.connect() and Event.emit_signal() to have global signals.
+     */
+    class Event : public godot::Node
+    {
+        GODOT_CLASS(Event, godot::Node)
+        public:
+            /**
+             * @brief This method registers classes with Godot.
+             * 
+             * @details This method registers methods, properties, and signals with the Godot engine.
+             */
+            static void _register_methods();
+
+            /**
+             * @brief Construct a new Event object.
+             * 
+             */
+            Event();
+
+            /**
+             * @brief Destroy the Event object.
+             * 
+             */
+            ~Event();
+
+            /**
+             * @brief Initialize the class from Godot.
+             * 
+             * @details This method is called just once when the Godot engine connects to the instance of the class.
+             */
+            void _init();
+    };
+}
+
+#endif