feat: add input handler & quitting with 'q'

1 files changed, 16 insertions, 0 deletions

diff --git a/src/interfaces/observable.hpp b/src/interfaces/observable.hpp
new file mode 100644
index 0000000..ca8ffda
--- /dev/null
+++ b/src/interfaces/observable.hpp
@@ -0,0 +1,16 @@
+#pragma once
+
+#include <functional>
+
+using Callback = std::function<void()>;
+
+template <typename Event>
+class IObservable
+{
+public:
+	virtual void listen() const = 0;
+
+	virtual void attach(const Event &event, Callback callback) = 0;
+
+	virtual void notify(const Event &event) const = 0;
+};