Ideas:
- Bots are built only in Roboport (we have to deliver materials) and are integral part of it. It is impossible to take them into your inventory.
 - Roboport can provide only limited amount of bots (tier 1 = 1 stack).
 - Destruction or disassembly of the Roboport, causing the loss of his bots.
 - Each Roboport has its own bots that fly only within its range and range of connected Roboport.
 - Bots can be recharged in connected Roboport.
 - Roboport range can be adjusted between 1 and maximum range.
 - Roboports are connected only manually and only when their ranges are in contact. Bots outside the range are lost.
 - Roboport can be turned On and Off. When it is turned Off, all the bots come back immediately after delivery of cargo and remain inactive.
 





