Half-Life: Decay is the the third expansion pack for the award-winning game, Half-Life. It was included as part of the PS2 version of Half-Life. Decay returns to the setting and timeline of the original story, albeit portraying the story from the viewpoint of a different set of protagonists: two scientists working in the Black Mesa Research Facility. Decay is a cooperative multiplayer game, designed to be played by two people working together to pass through the game's levels.

Description

I manage to mix maps from "We've Got Hostiles" chapter from Half-Life 1, now instead of 5 maps, they are mixed in only 2. I wanted to make them all in one bit the engine could not handle it and it was almost impossible from map design.

Preview
"We've Got Hostile" - Merging
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drakonuid5
drakonuid5 - - 53 comments

This is replacement for standart campaign or just edited maps?

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Greenth-Mac Author
Greenth-Mac - - 442 comments

It does not replace it, the maps are named "hl_wgh01" and "hl_wgh02". At one part, it mixes some maps of the chapter, so instead of 5 you now have only 2, and from another part, each game (half-life, blue shift, opposing force, decay) has different encounters, so you won't repeat the exact same thing from to one. I hope you enjoy it! Check out also the trailer on youtube (unless you did).

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3037
3037 - - 489 comments

this is freaking cool. How can you manage this ?

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Greenth-Mac Author
Greenth-Mac - - 442 comments

2 things, decompile the maps and the "fgd" files for the games's tools. As for combining the maps, I just did a normal copy/paste.
I wish that you enjoyed the 2 maps in all 4 HL games!

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HEVScientist
HEVScientist - - 1,353 comments

I found easter egg in opposing force one, in freeze i found the traineer from boot camp

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Greenth-Mac Author
Greenth-Mac - - 442 comments

I hope you like it! Go and look into the same freeze in the other games too. My favorite is Blue Shift's

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HEVScientist
HEVScientist - - 1,353 comments

Okay but Sadly I don't have blue shift, Only half-life 2, half-life 2 episode 1, episode 2, half-life opposing force

And decay

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Greenth-Mac Author
Greenth-Mac - - 442 comments

In this case, I will make a video and show you the easter egg, or you can download a non-steam version of the game. Try to see Decay's. What about Half-Life 1's easter egg? There are 1 for each:" valve & valve_extra"
One last thing, can you look for something called "Bleen Shift"?

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HEVScientist
HEVScientist - - 1,353 comments

Sent me screen shot of easter egg the blue shift map (this addon)

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Guest
Guest - - 690,235 comments

Why are alot of the textures misaligned and why are some parts of the geometry either missing or sticking out?

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Greenth-Mac Author
Greenth-Mac - - 442 comments

That's because I decompiled the maps to merge them, and decompiling isn't 100% accurate. But I will release a better version by fixing some problems and textures with the addition of playable versions for some mods like "point of view" and "zombie edition"

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Greenth-Mac Author
Greenth-Mac - - 442 comments

If you meant by "geometry" that long ladder, I had to make it long, or else it would never have worked with the other map. Besides, this is just for fun.

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LTFD
LTFD - - 12 comments

it's great, but why doesn't it have a connection to c1a4?

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Greenth-Mac Author
Greenth-Mac - - 442 comments

Because I removed the trigger for the next map. This is just about the "We've Got Hostiles" chapter.

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LTFD
LTFD - - 12 comments

oh...nice then, but can you made a version with the connection?

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Greenth-Mac Author
Greenth-Mac - - 442 comments

This will require me to also add on the next map because it read the previous one as "c1a3" while I changed the name to "hl_wgh01"
But with the help of bspguy it is easy to do
I do have a better version with fixing most of the problems, I can't just find time to finish it

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LTFD
LTFD - - 12 comments

oof, well it would be great a Half-life without fewer loading screens, it would be a miracle and it would be enjoyed much more than it is enjoyed

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Greenth-Mac Author
Greenth-Mac - - 442 comments

I wanted to do this. I actually have mixed maps of "Anomalous Materials" and "On A Rail" (first 3 maps), but it was too hard to do it with decompiling.

You can still do it with bspguy, opening the "c1a4" map and change both landmark and changelevel trigger to match with the mixed maps name

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bxigxy
bxigxy - - 28 comments

colette doesnt even spawn in the decay one lol

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Greenth-Mac Author
Greenth-Mac - - 442 comments

I know, I figured out how to do it after I finish with this. I did put a file to instruct on how to spawn her, just load a normal Decay map and then load this one. Also, don't load it from the main menu because that way you are entering "singleplayer mode" which is obviously won't load 2 players, make sure to be in multiplayer to work.

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