feat: event sketch

include/event.h

@@ -0,0 +1,35 @@
+#pragma once
+#ifndef EVENT_H_
+#define EVENT_H_
+
+#include <stdbool.h>
+#include <stddef.h>
+
+enum class EventType {
+	INPUT,
+};
+
+struct Event {
+public:
+	Event();
+	virtual ~Event() = default;
+
+public:
+	virtual EventType GetType() const = 0;
+
+public:
+	void Handle();
+	size_t Id() const;
+
+public:
+	bool IsHandled() const;
+
+private:
+	bool m_handled;
+	size_t m_id;
+
+private:
+	static size_t s_id_counter;
+};
+
+#endif // EVENT_H_

include/event/input.h

@@ -0,0 +1,16 @@
+#pragma once
+#ifndef H_INPUT_EVENT_
+#define H_INPUT_EVENT_
+
+#include "event.h"
+
+struct InputEvent : public Event {
+public:
+	InputEvent() = default;
+	~InputEvent() = default;
+
+public:
+	EventType GetType() const override;
+};
+
+#endif // H_INPUT_EVENT_