[W.I.P] 20th anniversary map changes

[megakarlach]

20th anniversary map changes combined with Update specific changes (and few enhancements and bug fixes by me) is still being worked on, currently the maps below are complete but planned to be released somewhere in 2025. Changelogs will be released later when it's done.

The current reUpdate version has both 20th anniversary changes (and my own changes):
d1_trainstation_01 - d1_trainstation_06
d1_canals_01 - d1_canals_05
d2_coast_10

BETA 2 version (WORK IN PROGRESS):

d1_canals_06 to d1_canals_13 (Water Hazard)
d1_eli_0x (Black Mesa East)
d1_town_0x (Ravenholm)

[megakarlach]

Sneak peek of next BETA 2 version (featuring new bug fixes that both HL2 Update and HL2 anniversary lacked):

Basically, lightning sprite effect is now fixed so it will move alongside with the Airboat and not floating in the air.

Next version will also feature changes from Water Hazard to Ravenholm, but currently for now, Water Hazard is almost finished.

[megakarlach]

Water Hazard is nearly completed and soon, Black Mesa East. Here's the helicopter area comparison:

Update:

20th anniversary:

reUpdate:

The new reUpdate one, with both 20th anniversary and Update fog combined, makes the low-res ravenholm town texture on far distance looks more foggy. I also had to make adjustment (by turning Update's fog into a prop_dynamic model using Propper++ and change fog color there) since Update fog now looks like piss after adding new 20th anniversary fog.