void CLevel::DeleteRemovedEntities()
{
    // If there's no entities to remove.
    if (m_RemovedEntities.size() == 0) return;

    // Loops over all entities to be removed.
    for (auto entity : m_RemovedEntities)
    {
        if (!entity) continue;
        DeleteEntity(entity);
    }

    // Clears the list as all the entities are removed above.
    m_RemovedEntities.clear();
}