From 29f0a5d647c9674cbda8a083785a498acfb4cba4 Mon Sep 17 00:00:00 2001
From: Joachim Schoeberl <joachim.schoeberl@tuwien.ac.at>
Date: Tue, 16 Jan 2024 10:17:19 +0100
Subject: [PATCH] simple signal without smart pointers

---
 libsrc/core/signal.hpp | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/libsrc/core/signal.hpp b/libsrc/core/signal.hpp
index 082dd32b..bd9cd6f0 100644
--- a/libsrc/core/signal.hpp
+++ b/libsrc/core/signal.hpp
@@ -2,6 +2,7 @@
 #define NGCORE_SIGNALS_HPP
 
 #include <list>
+#include <map>
 #include <functional>
 
 namespace ngcore
@@ -43,6 +44,36 @@ namespace ngcore
     }
     inline bool GetEmitting() const { return is_emitting; }
   };
+
+
+
+
+  class SimpleSignal
+  {
+  private:
+    std::map<void*,std::function<void()>> funcs;
+  public:
+    SimpleSignal() = default;
+
+    template<typename FUNC>
+    void Connect(void* var, FUNC f)
+    {
+      funcs[var] = f;
+    }
+
+    void Remove(void* var)
+    {
+      funcs.erase(var);
+    }
+
+    inline void Emit()
+    {
+      for (auto [key,f] : funcs)
+        f();
+    }
+  };
+
+  
 } // namespace ngcore
 
 #endif // NGCORE_SIGNALS_HPP