1 files changed, 63 insertions, 0 deletions
diff --git a/engine/include/core/priority.hpp b/engine/include/core/priority.hpp
new file mode 100644
index 0000000..7a23803
--- /dev/null
+++ b/engine/include/core/priority.hpp
@@ -0,0 +1,63 @@
+#pragma once
+
+#include <set>
+
+namespace flat
+{
+    namespace core
+    {
+        enum class prior_t : unsigned 
+        {
+            max = 0,
+            higher = 1,
+            high = 2,
+            none = 3,
+            low = 4,
+            lower = 5,
+            min = 6,
+        };
+
+        class prioritized
+        {
+            const prior_t m_priority;
+
+        public:
+
+            prioritized(prior_t m_priority = prior_t::none) : m_priority(m_priority) {}
+
+            const prior priority() const
+            {
+                return m_priority;
+            }
+        };
+       
+        struct prior_criteria
+        {
+            bool operator()(const prioritized& a, const prioritized& b) const
+            {
+                return a.priority() < b.priority();
+            }
+        };
+
+        /* Compiler will complain if don't pass a non prioritized object */
+
+        template <class T>
+        using prior_set = std::set<T, prior_criteria>;
+
+
+        /* Equivalent but with pointers */
+
+        struct prior_ptr_criteria
+        {
+            bool operator()(const prioritized* a, const prioritized* b) const
+            {
+                return a->priority() < b->priority();
+            }
+        };
+
+        /* Compiler will complain if don't pass a non prioritized object */
+
+        template <class T>
+        using prior_ptr_set = std::set<T*, prior_criteria>;
+    }
+};