Initial support for Event Hooks.

src/Battling/EventHooks/EventHook.hpp

@@ -0,0 +1,25 @@
+#ifndef CREATURELIB_EVENTHOOK_HPP
+#define CREATURELIB_EVENTHOOK_HPP
+
+#include <vector>
+#include "EventData.hpp"
+
+#define EVENT_HOOK_FUNC(name) void (*name)(const EventData*)
+
+namespace CreatureLib::Battling {
+    /// The Event Hook class allows users to write consumers for the battle events, for example to write User Interfaces
+    /// for it.
+    class EventHook {
+        std::vector<EVENT_HOOK_FUNC()> _listeners;
+
+    public:
+        void RegisterListener(EVENT_HOOK_FUNC(func)) { _listeners.push_back(func); }
+
+        void TriggerEvent(EventData* eventData) {
+            for (auto listener : _listeners) {
+                listener(eventData);
+            }
+        }
+    };
+}
+#endif // CREATURELIB_EVENTHOOK_HPP