From be6de4e7e37063657bb6dbbbb0b7797f4c2acef2 Mon Sep 17 00:00:00 2001
From: Madeline Busig <madeline.busig@outlook.com>
Date: Wed, 6 Mar 2024 23:02:00 -0700
Subject: [PATCH] Add initial finite state machine implementation

---
 include/mtl/fsm.hpp | 42 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)
 create mode 100644 include/mtl/fsm.hpp

diff --git a/include/mtl/fsm.hpp b/include/mtl/fsm.hpp
new file mode 100644
index 0000000..c24054e
--- /dev/null
+++ b/include/mtl/fsm.hpp
@@ -0,0 +1,42 @@
+#pragma once
+
+#include <cstdint>
+
+namespace mtl {
+class fsm_event {
+private:
+public:
+};
+
+template <typename T>
+T fsm_state_instance;
+
+template <typename FSMType, typename InitState>
+class fsm {
+
+	FSMType* state = nullptr;
+
+protected:
+	virtual void react(const mtl::fsm_event& event) = 0;
+
+	virtual void entry() {}
+	virtual void exit() {}
+
+	template <typename T>
+	void change_state() {
+		state = &fsm_state_instance<T>;
+	}
+
+public:
+	fsm() {
+		state = &fsm_state_instance<InitState>;
+	}
+
+	template <typename T>
+	void dispatch(const T& event) {
+		state->react(event);
+	}
+};
+
+
+} // namespace mtl