Trigononometric Oil

is a light rework of the oil processing chain designed to include a few more byproducts and things to deal with.

No, it's not based on actual trigonometry, though some processes are a bit more mathematically complex.

Disclaimer

This mod is still quite in development, but now in a state I can somewhat release and get some better feedback with regards to balancing numbers.

Given the above statements, it's !! VERY LIKELY TO ALMOST CERTAIN !! you will encounter issues with any content changing mods like SE/IR3, 248k, etc
While I have locally tested with Rate Calculator, Factory Planner, Editor Extensions, and so on and so on, I've likely missed some critical interactions. If in doubt, I probably broke it, sorry!

If you would like to report a bug, offer suggestions on balancing, or contact me for whatever other reason, the best way would be on Discord (sinewave#6423).

Information

All forms of main crude processing return heavy oils, light gasoils, carbon dioxide, and asphalt (a solid waste)
Heavy Oil, Light Oil and Petroleum Gas have been changed to slightly different analogs
Light gasoils contain a dirty mix of sulfur compounds and other valuable hydrocarbons
Heavy oils and light gasoils are still similar in function to their original fluids; petroleum gas has been turned into ethylene, a flammable gas that can be used to make plastic
Carbon dioxide and other unwanted or unusable gasses may be vented or flared at the cost of extra pollution.
Light oil may also be used to make liquid fuel, used for power generation and smelting
The role of solid fuel has been moved to petroleum coke
- Petroleum coking also releases carbon dioxide
- Required for rocket fuel production alongside liquid fuel
Hydrogen sulfide and ethylene now both exist as a result from hydrocracking light gasoil
However, both must be processed additionally to purify the resulting product further
- Sulfur is now a two-step process. After hydrocracking, sulfur can be extracted from the hydrogen sulfide byproduct
- Plastic is a three-step process. Ethylene must first be polymerized, and then molded into bars.
Also adds in a vacuum pressure fluid analog to reflect more modern processing techniques.

Roadmap

More uses for intermediates, such as napalm flamethrower ammunition
Improved icon graphics, and custom graphics for the vacuum pump
Pending balance: a focused asphalt recipe to avoid wasteful production of other oils
Special pipes for acidic fluids (if possible in engine)
Integrated and adjusted version of Wreckage Pollution
~~More integration-friendly with other mods~~ Addressed in 1.1.0 and 2.0.0, but always an effort. Contact me if something is broken please!
~~Asphalt pavement tiles, to aid with excess asphalt~~ Compatibiliy with Asphalt Paving has been added in 2.0.0
Migrations

Compatibility

Trigonometric Oil is compatible with:

AAI Industry
Asphalt Paving
BZ Lead
Cargo Ships
Freight Forwarding
Fracking
FF and Fracking may not be compatible together, however
Wreckage Pollution

It is not compatible with:

BZ Gas
Planned compatibility in the future
Space Exploration, Angel's Petrochem, Bob's Intermediates, Krastorio 2, Industrial Revolution, pYmods, etc
These include their own changes to oil processing and many other addressed changes

Attributions

Krastor, Linver, and Raiguard for some modified Krastorio 2† assets
GotLag for their Flare Stack mod‡ assets and code
Schorty for their Air Filtering mod+ assets
Brevven‡ for some minor data utils to re-add productivity modules to recipes

I would be happy to re-code and rig sprites if they are not OK with this. Thank you to all parties for generously releasing assets to be used and modified!

Please consult the GNU LGPL v3†, MIT‡ and Beer-Ware+ licenses for more information.

In addition, thank you to: Xorimuth for actually getting me to make this, and others in the Factorio discord for suggestions and mod-making help! I couldn't do this without the amazing work Wube and co. has put in to their API and game documentation.