The Meaning of Life, the Universe, and Everything.
TL;DR: Robots, Fun, RF power.
The Non-TL;DR version is more complicated:
There is a story to these bots, you have to learn how to make these, and as you discover the research in a new world generation, you learn a schematic. Each schematic eventually totals to each recipe needed to make the bots.
The types of bot pieces are listed in the spoiler below:
The Head: Which is the personality, behavior, and actions the bot does, each head can be programmed with a soldering table, and can be used to improve efficiency, and charging capabilities. So you could build this to operate on solar power, or go into a chamber and charge itself (provided the chamber has power to give the bot), otherwise the bot will sit in the chamber until it has charged fully. This piece is the AI of the entire bot, deciding if its a servant or a guard.
The Body: This is the charge/storage capacity, it is the core of the Bot. This means, everything works off of the body, tiered bodies have a complexity limit, so a tier 3 head that charges on solar power can't work on a wooden battery box shaped like a body, for example.
The Arm(s): This part is slightly different. You can have 1 or 2 arms, however, each have a power draw. So you could a tier 1 arm, and an empty slot on the other arm. This would save power, BUT reduce the damage(if you are using it as a guard) or the mining/harvesting speed (if you are using it as a servant)
The Legs: This controls speed, maneuverability, and ability. If it can work only on flat surfaces, go up 1 block, or can jump
up to reach other areas. This also controls Pathing, so it can choose the best course of motion depending on its ability given by the means of transportation
Plating: This is the health, the armor value of the bot, how much damage it can take, whether that means the plating generates a bubble shield at high tiers, as well as have solar panels on the shoulders that allow for small power generation, or have an extra layer of iron.
After you know some components, some flux-charged cogs, some circuitry, and some soldering with the soldering table, which is akin to the customization in the modular powersuits' tinkering table, and a displayed set of items that are in the table (that don't drop when you exit the table), You could start building a Bot! Once you craft a piece of the bot, you can put it into the corresponding slot in the "Assembly Table" that also displays the bits of the bot.
The World Generation Mentioned Earlier is in the Spoiler Below:
This will be generating around the world, uncommon, and it will have different tiers of difficulty, this means, that one might be super easy, run in, get the tier 2 blueprint and get out, and some, very difficult, with spawners of guardians and such in each, it will be interesting. There is also some dungeon loot in there somewhere...
Currently Implemented Items:
Repository of Knowledge: This is the manual to the mod, it will most likely have an Animated UI once its done. All things you discover, will be thrown into this tablet!
List to be expanded later...
This Mod is currently being made
Release Date: Unknown
If you would like to help, PM me and I will interview you