Cherry-pick upstream's master

[braem]

Closes #85

Taking over from #93 as that hasn't seen traction in awhile. This only includes changes in master, not spen's dev branch. Last commit being on January 12, 2022.

Changes intentionally not included:

• TeamSpen210@391737e - We don't want this dirtying the FGD, and doesn't break older maps anyways
• TeamSpen210@8f6d90c and TeamSpen210@4b4f11e - I imagine P2CE probably wants these so will keep under HL2_Entities. They can change that if they want.
• TeamSpen210@00440f4 - We actually do have this. I'm not sure if the code path is dead but keeping it around anyway.
• TeamSpen210@4493a16 & TeamSpen210@366dff5 & TeamSpen210@cedbf5d - Sixense

Things we already have

• TeamSpen210@dccba7a
• TeamSpen210@e19f246
• TeamSpen210@00528cd

Now I see that there are a couple commits (TeamSpen210@b76fd5f & TeamSpen210@7fbaedc) that seem to suggest studioprop is mainly for older games.. if that is the case we should replace them all with studio?

A big commit I skipped over that needs special mention is one adding mapbase stuff TeamSpen210@e800a03. We should add this to Chaos at some point (if mapbase is compatible with our license???)

[braem]

Also worth noting that this reverts the readme to that on spen's repo. We haven't had a Chaos-specific readme anyways. We need to write one!

[tmob03]

A big commit I skipped over that needs special mention is one adding mapbase stuff TeamSpen210@e800a03. We should add this to Chaos at some point (if mapbase is compatible with our license???)

https://docs.momentum-mod.org/entity/mapbase_enhancements/
Some mapbase things are already in momentum

[TeamSpen210]

studioprop() isn't for older things, basically you want studioprop() for props representing the "real" appearance of ents, studio() for editor helpers and the like. studio() doesn't include the model in the bounding box, and some other things like that.

[braem]

A big commit I skipped over that needs special mention is one adding mapbase stuff TeamSpen210@e800a03. We should add this to Chaos at some point (if mapbase is compatible with our license???)

https://docs.momentum-mod.org/entity/mapbase_enhancements/ Some mapbase things are already in momentum

Yup and we have the things we do have in FGDs currently. We just need to pull in the newer mapbase stuff at some point.

[braem]

studioprop() isn't for older things, basically you want studioprop() for props representing the "real" appearance of ents, studio() for editor helpers and the like. studio() doesn't include the model in the bounding box, and some other things like that.

Ah thanks for the heads up! <3

[AWildErin]

Unrelated to what the PR is bringing in, but I noticed it brought over changes for fgd/bases/BMBaseHelicopter.fgd, do we even need this file? It seems to a Black Mesa Source related thing

[braem]

Unrelated to what the PR is bringing in, but I noticed it brought over changes for fgd/bases/BMBaseHelicopter.fgd, do we even need this file? It seems to a Black Mesa Source related thing

Oh yeah I dont see any entity basing off it as well so I will remove here

[AWildErin]

From a quick glance this seems fine to me

[braem]

From a quick glance this seems fine to me

Yeah a lot of minor tweaks. Not really a need to go into the new comp entities or scripts that spen's working on nor any of the materials.