[TF2] Add support for MvM-specific Spy Masks + Disguise Portraits (assets linked in post)

[rabscootle]

This PR adds a new 'MvMTexture' proxy to allow for texture swaps while playing Mann vs Machine.

The 'MvMTexture' proxy supports swapping textures with a specified asset while in MvM:

An optional 'enemyDisguiseOnly' parameter is included to support robot mask textures only drawing when disguised as the enemy team in MvM.

This material proxy is intended to be used for the following features:

Spy Disguise Masks

mvm_spy_masks.mov

Spy Disguise Portraits (Disguise UI + 2D Player Class HUD)

mvm_disguise_portraits.mov

Assets (Steam Workshop)

Assets can be found here: https://steamcommunity.com/sharedfiles/filedetails/?id=3779034311

Submission includes the following:

• MvM Robot Mask Assets (Robot Engineer Mask VTFs/TGAs + updated VMTs)
• MvM Robot Disguise Portraits (VTFs, TGAs, updated VMTs)
• MvM Robot Class HUD Portraits (VTFs, TGAs, updated VMTs)
• MvM Disguise UI Icon (VTFs, TGAs, updated VMT)

Credits

rabscootle - code + implementation aid
badasscook - assets

[alexanderjuliao]

This is pretty cool.

[Pygargue00fr]

This needs to get in. It just does.

[Chickenman456]

This would be a very welcome quality of life addition, especially since the MVM update is so soon! I think Valve would be shooting themselves in the foot by not merging this.

[TheShermanTanker]

This would be a very welcome quality of life addition, especially since the MVM update is so soon! I think Valve would be shooting themselves in the foot by not merging this.

It's been ages since I've heard of the MVM update, where was it stated it's coming soon?

[Professor-Heavy]

This would be a very welcome quality of life addition, especially since the MVM update is so soon! I think Valve would be shooting themselves in the foot by not merging this.

It's been ages since I've heard of the MVM update, where was it stated it's coming soon?

https://www.teamfortress.com/post.php?id=276354
Here- on the TF2 blog a month ago. They didn't say it was coming "soon", but confirmed progress on it.

[TheShermanTanker]

This would be a very welcome quality of life addition, especially since the MVM update is so soon! I think Valve would be shooting themselves in the foot by not merging this.

It's been ages since I've heard of the MVM update, where was it stated it's coming soon?

https://www.teamfortress.com/post.php?id=276354 Here- on the TF2 blog a month ago. They didn't say it was coming "soon", but confirmed progress on it.

Nice, thanks for the link, glad to hear it's coming along at least. If only I could get my changes merged as part of the update too :(