"Basic" entity component system. Almost.

Escape-the-Dawn/ComponentFactory.h

@@ -0,0 +1,50 @@
+#ifndef ComponentFactory_h__
+#define ComponentFactory_h__
+
+#include <string>
+#include <functional>
+#include <map>
+
+#include "Component.h"
+
+#define REGISTER_COMPONENT(NAME, TYPE) \
+	static ComponentRegistrar<TYPE> registrar(NAME);
+
+template<class T>
+class ComponentRegistrar
+{
+public:
+	ComponentRegistrar(std::string name)
+	{
+		ComponentFactory::Instance()->Register(name, [](void) -> std::shared_ptr<Component> { return new T() });
+	}
+};
+
+class ComponentFactory
+{
+public:
+	static ComponentFactory* Instance()
+	{
+		static ComponentFactory factory;
+		return &factory;
+	}
+
+	void Register(std::string name, std::function<std::shared_ptr<Component>(void)> factoryFunction)
+	{
+		m_FactoryFunctions[name] = factoryFunction;
+	}
+
+	std::shared_ptr<Component> Create(std::string name)
+	{
+		auto it = m_FactoryFunctions.find(name);
+		if (it != m_FactoryFunctions.end())
+			return it->second();
+		else
+			return nullptr;
+	}
+
+private:
+	std::map<std::string, std::function<std::shared_ptr<Component>(void)>> m_FactoryFunctions;
+};
+
+#endif // ComponentFactory_h__