Smart Factories and Sliders

[Telarin]

Building smart factories would require a new tech level of logistics. They would require the advanced factory, plus a few additional resources to build (maybe a couple advanced circuits and some miscellaneous bars).

* Smart factories would have slightly faster construction speed than advanced factories.
* You would be able to select how many batches worth of materials a smart factory would stockpile, rather than being stuck with the default of 2 batches worth of materials.
* You would be able to select an operating condition, similar to smart inserters if the smart factory was connected to a network
* Smart factories would transmit a NEGATIVE number of materials when they needed materials for their input stockpile. (Example: A factory that wanted to stockpile 50 iron plates would transmit 0 to the network when it had all 50 in stock, but would transmit -10 if it only had 40 plates). The idea behind this is to help simplify logistics in complex systems so that operating conditions of factories and inserters does not have to be changed every time a new factory is added.

Additionally, I would like to see finer control on the sliders for smart inserters. The progression from 10s to 100s to 1000s is handy for setting rough amounts, but it would be nice to have an optional text box that you can type a specific number into for the operating conditions.

[Pinkishu]

@ Smart Inserters: it works for fine amounts too; if you need 120, set it to 200 and connect another chest you stick 80 into ^^