DECOHACK-Defined Sprite Translucency

[OpenRift412]

I've mentioned this before in the Woof channel in the Chocolate Doom Discord, but I'll put it here so it can be tracked.

In Legacy of Rust, certain sprites have a transparency effect applied to them (Ghoul projectile, Vassago Flame, Incinerator Flame, and Heatwave Ripper) which are defined in the WAD's DECOHACK lump. I don't know how much work would need to be done to implement DECOHACK support, but I think it will be ultimately worth it in regards to having author-definable transparency for specific sprites.

[rfomin]

DECOHACK is translated to standard DEHACKED using DoomTools. The Transluencsy flag in DEHACKED is a Boom feature that is supported in Woof. The difference is that Boom/Woof defines most projectiles as translucent, while the KEX port does not.