问使用与用户关联的rails创建“构建队列”

EN

build_in_progress = BuildQueue.where(queue_type: 'build', kingdom_id: current_kingdom.id)

# It means that the building queue is empty
if build_in_progress.empty?

  build_time = time(building)
  new_queue = BuildQueue.create(queue_type: 'build', build: building, kingdom_id: current_kingdom.id, build_time: build_time)

  Thread.start do
    sleep build_time

    # [...] Here I update the building concerned
    new_queue.destroy
  end
else
  build_in_progress_id = build_in_progress.last.id
  new_queue = BuildQueue.create(queue_type: 'build', build: building, kingdom_id: current_kingdom.id)

  Thread.start do
    build_in_progress = BuildQueue.find_by_id(build_in_progress_id)
    until build_in_progress.nil?
      sleep 1
      build_in_progress = BuildQueue.find_by_id(build_in_progress_id)
    end

    # We check that the player still has the necessary resources
    cost = cost(building)

    if can_upgrade?(cost)
      build_time = time(building)
      new_queue.build_time = build_time
      new_queue.save

      sleep build_time

      # [...] Here I update the building concerned
      Notification.create(kingdom_id: current_kingdom.id, notif_type: 'build', message: "The construction of #{t("buildings.#{building}")} is finished", icon: 'gavel')
    end

    new_queue.destroy
  end
end