From ce926c5f170b6f475af2b1c3ba3b84967d0ef585 Mon Sep 17 00:00:00 2001
From: Dominic Masters <dominic@domsplace.com>
Date: Fri, 17 Nov 2023 17:28:41 -0600
Subject: [PATCH] evt

---
 src/dawn/event/Event.hpp | 28 ++++++++++++++++++++++++----
 1 file changed, 24 insertions(+), 4 deletions(-)

diff --git a/src/dawn/event/Event.hpp b/src/dawn/event/Event.hpp
index 6fce0ba9..50bea65f 100644
--- a/src/dawn/event/Event.hpp
+++ b/src/dawn/event/Event.hpp
@@ -7,14 +7,34 @@
 #include "dawnlibs.hpp"
 
 namespace Dawn {
-  template<typename T>
+  template<typename ...A>
   class Event {
     private:
+      int32_t nextId = 0;
+      std::unordered_map<int32, std::function<void(A...)>> listeners;
 
     public:
-      Event() {}
-      virtual ~Event() {}
+      Event() {
 
-      virtual void operator()(T &t) = 0;
+      }
+
+      void emit(A ...args) {
+        auto copy = listeners;
+        for(auto &pair : copy) {
+          pair.second(args...);
+        }
+      }
+
+      std::function<void()> listen(const std::function<void(A...)> listener) {
+        int32_t id = nextId++;
+        listeners[id] = listener;
+        return [this, id]() {
+          listeners.erase(id);
+        };
+      }
+
+      virtual ~Event() {
+        listeners.clear();
+      }
   }
 }
\ No newline at end of file