Created a base engine class and let it handle all creeps.

include/Engine.hpp

@@ -0,0 +1,58 @@
+#ifndef DOUWCO_HIVEMIND_ENGINE_HPP
+#define DOUWCO_HIVEMIND_ENGINE_HPP
+
+#include <vector>
+#include <Screeps/JS.hpp>
+#include <Screeps/Game.hpp>
+#include <Screeps/Creep.hpp>
+
+#include "Constants.hpp"
+#include "Creeps/Harvester.hpp"
+
+namespace DouwcoHivemind
+{
+    class Creep;
+    class Structure;
+
+    class Engine
+    {
+    private:
+        std::vector<std::unique_ptr<Creep>> creeps;
+        // std::vector<std::unique_ptr<Structure>> structure;
+
+    public:
+        Engine()
+        {
+            ReadOutCreeps();
+        }
+        ~Engine() {}
+
+        void loop() {
+            for(auto &creep : creeps){
+                creep->loop();
+            }
+        }
+
+    private:
+        void ReadOutCreeps()
+        {
+            auto src_creeps = Screeps::Game.creeps();
+            for (auto &creep : src_creeps)
+            {
+                Roles role = creep.second.memory()["role"];
+                switch (role)
+                {
+                case Roles::HARVESTER:
+                    creeps.push_back(std::make_unique<HarvesterRole>(creep.second));
+                    break;
+                case Roles::UNEMPLOYED:
+                default:
+                    EM_ASM({console.log('Undefined role for creep' + $0)}, creep.first.c_str());
+                    break;
+                }
+            }
+        }
+    };
+}
+
+#endif // DOUWCO_HIVEMIND_ENGINE_HPP