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Materials Matter

Wha! It's just like in the real life! WTF !

It should work in future versions. 1.6+

About the downside stuff: Isn't the value going up when you build it from higher value materials and therefor raids are becoming stronger?
It is also an opportunity cost not to spend the high value materials on their respective use and fill them into interior instead.

Sure thing if you are building into the blue on low difficulty there is no downside.

@OP Your mod throws a batch of errors on launch trying to patch materials that aren't loaded. You need to add a MayRequire [rimworldwiki.com] check for each material set outside of Core materials to stop them from trying to load if someone doesn't have the DLC/mod loaded.

@SaladSnake I love the ideas and feedback, thanks!
Unfortunately I haven't found a built-in way to modify the power usage nor breakdown rate.
Perhaps in the future I might look into creating a mod with code and not just xml to do what you mentioned.

@LZIM Great idea, and I think that might be doable with just xml. I'll have a look :-)

imagine if it also had quality

So it's not really a trade-off, it's just "how much faster would I like things to go"? Even the basic, vanilla version is 110 percent of vanilla. I don't really understand the reasoning, it just kinda breaks the balance of the game without any downsides. Personally I'd think that, instead of flat boosts, it should be more like below:

Steel is just vanilla

Silver/Gold have vanilla workspeed but add a beauty bonus, use less power (they're very conductive, silver could be 30 percent less and gold 75 percent less) and a greater breakdown chance (they're weak materials) with lower HP

Uranium should decrease workspeed (maybe -15 percent) but have no chance to break down, very high hp, and add a bonus cover rating for pawns hiding behind it

Plasteel should be 120 percent, add a room cleanliness bonus, and have a 50 percent breakdown rate

Bioferrite should increase room security for anomaly containment and have a 105 percent work speed bonus.