Added systems

It's now officially an ECS, yay!


Former-commit-id: e2aacaa5c9fd362921cf3d064e346d11f942bd59

SDK/include/NDK/Algorithm.inl

@@ -19,9 +19,27 @@ namespace Ndk
 		return componentId;
 	}
 
+	template<unsigned int N>
+	SystemId BuildSystemId(const char (&id)[N])
+	{
+		static_assert(N-1 <= sizeof(ComponentId), "ID too long for this size of component id");
+
+		ComponentId componentId = 0;
+		for (int i = 0; i < N; ++i)
+			componentId |= static_cast<ComponentId>(id[i]) << i*8;
+
+		return componentId;
+	}
+
 	template<typename ComponentType>
 	constexpr ComponentId GetComponentId()
 	{
 		return ComponentType::ComponentId;
 	}
+
+	template<typename SystemType>
+	constexpr SystemId GetSystemId()
+	{
+		return SystemType::SystemId;
+	}
 }