This is Guard Duty. Put your feet in the shoes of Barney Calhoun, a security guard at the Black Mesa Research Facility who has no idea that the next few hours are going to change his life forever. Re-live the exciting adventure of Blue Shift, now re-created in the award winning Source engine.

Post news Report article RSS Feed Operation Black Mesa DEV.BLOG: Advanced AI

Our team proudly presents our new AI system we implement for our NPCs. Check out this for more information and a video.

Posted by MR.sugar on May 28th, 2013

Hello again!

It's time to uncover our promised AI presentation. This short presentation will showcase some of the new features of our new advanced AI. As mentioned in the last updates, it's only the CODE presentation. The content is placeholders and not created by Tripmine Studios. The presentation can be seen here.

Our goal is to bring you AI, that will be challenging yet not frustrating. The new behaviour our programmers are implementing is the result of these efforts. Enemies are now more flexible and can follow you through the environments. Obstacles that used to be insurmountable problem in the original games and still are in the most of the modern games are not problem anymore for our NPCs. Check out the video presentation to get an idea.

The new AI system will work with all the NPCs. That means that not only enemies are smarter, but also your fellow collegues and Black Mesa personell can take advantage of this new AI. Ladders are no more problem for scientists, yay :) !!

The other function of this system is not only to make the game more challenging, but also bring life to our NPCs. We can now make the behaviour of our NPCs very natural and believeable. Soldiers communicate with each other, scientists talk to each other, creatures search for food around the environments, sleep, patrol or protect their babies. This is hopefully next step how to make the world even more dynamic and realistic. We hope you like it! Don't forget to leave us your feedback and ideas you have for the AI.

Post comment Comments  (0 - 50 of 52)
notaclevername May 28 2013, 8:37am says:

Wow, good stuff guys! I Can't wait to see what you think up next. :)

+14 votes     reply to comment
CuervoSp May 28 2013, 8:46am says:

Really good work, looks pretty nice.

+6 votes     reply to comment
Raygoza May 28 2013, 9:25am says:

This is awesome, will this AI be restricted to this mod only by the way?

+1 vote     reply to comment
MR.sugar Author
MR.sugar May 28 2013, 9:26am replied:

It will be also used in Guard Duty, if it's what you are asking about.

+7 votes   reply to comment
KEEP_IT_UP! May 28 2013, 9:55am says:

love the cockroach ai ^^
cant wait to hunt them... :D

+3 votes     reply to comment
Seaal May 28 2013, 10:18am says:

The AI is amazing and terrifing!

+4 votes     reply to comment
CodeBlackNL May 28 2013, 10:41am says:

Unlike Black Mesa, will the Source Code be released once the full game is also released?

+3 votes     reply to comment
MR.sugar Author
MR.sugar May 28 2013, 11:43am replied:

We haven't discussed this yet. We will bother with this later on, probably after the release.

+1 vote   reply to comment
callmeSven May 28 2013, 2:03pm replied:

Please do!

+2 votes     reply to comment
MR.sugar Author
MR.sugar May 28 2013, 2:06pm replied:

We can't promise you this.

+1 vote   reply to comment
B.R.V May 28 2013, 11:16am says:

as far as i know, houndeye shockwave damage from pack size dependancy and cockroaches light sensitivity was implemented in original Half-Life, and wasnt done in Black Mesa (yet?), so bringing these things back is quite a good thingm i think.
Not so sure about grunts rappeling from ledges, though... do they rappel when there is no other convenient way down (stairs), or will they just every time they need to get somewhere lower? They also could end up in a place where they cant get back up, nor get the player who lured them there and went out by means only given to him(such as vents)?

+2 votes     reply to comment
MR.sugar Author
MR.sugar May 28 2013, 11:42am replied:

We can easily say where they can rappel down and where not, using things like tools brushes in Hammer and so on ;)

+2 votes   reply to comment
Phenixtri May 28 2013, 1:29pm replied:

would be cool if you code them to hunt the player "provided they know you went into a vent" while he is hiding in vents EG throwing nades or going in after you with their sidearms drawn kinda like the US tunnel rats did during Vietnam.

+4 votes     reply to comment
PurpleGaga27 May 28 2013, 1:22pm says:

I hope this AI will be better and more enhanced than Black Mesa.

+3 votes     reply to comment
CodeBlackNL May 28 2013, 1:44pm says:

Looks good though, only thing I would change is the walk and player stare thing at 1:33.In real life, I think you would fall.

+1 vote     reply to comment
Velancious May 28 2013, 2:11pm says:

People commonly forget that the AI is a massive part of any game-I'm glad you guys realized this.

+4 votes     reply to comment May 28 2013, 4:40pm replied:

We do what we can to put the AI the a higer level.

+3 votes     reply to comment
Dejected-Angel May 29 2013, 1:48am replied:

Most game developer just care for the action, like CoD: Ghost reveal, a new AI which is just fishes swimming away from you when you get close. And that has been made twenty years ago!
That's the reason why I'm excited about this mod.

+1 vote     reply to comment
Guest May 28 2013, 2:26pm says:

Quick question: Will you be remaking the Boot Camp prologue as well? It could add the opportunity to explore the characters and half-life world more, or just train nubs.

+3 votes     reply to comment
MR.sugar Author
MR.sugar May 28 2013, 2:45pm replied: +4 votes   reply to comment
Guest May 29 2013, 2:28am replied:

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SPTX May 28 2013, 3:08pm says:

It's cool and all, but I see they keep that bad habit the original AI has to stay under the player's crosshair. Did you plan on giving the reasoning creatures teh ability to properly seek for cover and/or dodge when they get damaged rather than eating it all up?

+1 vote     reply to comment
MR.sugar Author
MR.sugar May 28 2013, 4:24pm replied:

Yes, this will be fixed as well.

+3 votes   reply to comment
R0ADKILL May 28 2013, 4:00pm says:

Do cockroaches have their designated leader :D

+6 votes     reply to comment
theSixtyEight May 29 2013, 8:06am replied:

I am their father ;) :D

+3 votes     reply to comment
Lt.James May 28 2013, 4:02pm says:

Cool stuff guys.

+1 vote     reply to comment
dany14920 May 28 2013, 4:09pm says:

That's some epic AI's right there. I hope next time you'll be able to show the scientists climbing up/down the ladder as well as the Barneys :D.

Oh and one thing, will Scientists be finally be able to use weapons such as a pistol and Barneys using other weapons such as the AR or shotgun other than their revolver/pistol.

+2 votes     reply to comment
MR.sugar Author
MR.sugar May 28 2013, 4:25pm replied:

We will probably look into this. Sec.guards can already pick up some weapons, as for scientists, we don't know. They rly have no idea how to use weapons :P

+4 votes   reply to comment
Boomsicle May 28 2013, 11:07pm replied:

Some scientists

+2 votes     reply to comment
Hell_Diguner May 29 2013, 12:55pm replied:

You'd think the guys going to Zen in HEV suits would have insisted on a gun or two.

+1 vote     reply to comment
MR.sugar Author
MR.sugar May 29 2013, 1:20pm replied:

These are scientists from the "Survey team"... Not every scientist is part of it. Most of it is not.

+2 votes   reply to comment
StegoSigma May 28 2013, 5:48pm says:

You should add in some stuff for your npcs to retreat. That's one thing I've noticed that is really unrealistic about video games. The enemies ALWAYS fight to the death and never try to run away.

+1 vote     reply to comment
Dejected-Angel May 29 2013, 1:50am replied:

What about original Half Life's grunts AI?

+1 vote     reply to comment
theSixtyEight May 29 2013, 8:07am replied:

I am not sure but I think I saw in this video, if you shoot houndyeye, it will retreat for a while

+1 vote     reply to comment
TheRenegadist May 28 2013, 7:52pm says:

Finally I can fully evacuate scientists! :D

Also maybe giving the scientists the ability to fight but very poorly. such as a scientist getting a gun and having to struggle to use it maybe getting a few shots off. With this the scientist could learn how to use the weapon overtime getting skilled each second kept alive. They could also pick up blunt weapons, but would be weak.

Scientists weren't given much attention in Half-Life besides being killed and following you. enhanced scientists would truly brighten the game!

+3 votes     reply to comment
B.R.V May 29 2013, 3:40am replied:

...and you'l possibly end up with an army of mad labcoats clearing levels without you having to do anything.
Babysitting scientists was the one of major points of interacting with em in half life.
Barneys arent truly capable of warfare either, cause they are just guardsm checking people in and out, making sure labcoats dont break anything drunk and that there is no strangers passing by in restricted areas. When real **** is going down, Black Mesa, being govmnt facility, have to rely on army divisions (HECU), with barneys just there to provide SOME assistance.

+2 votes     reply to comment
MR.sugar Author
MR.sugar May 29 2013, 3:49am replied:

You got the point B.R.V.
We may added some SCRIPTED sequences, when they try to protect themselves, but that's it. I personaly like how frightened scientists are and changing this would be rly huge change to the game. Not sure if it would be the good change though.

+1 vote   reply to comment
B.R.V May 29 2013, 4:07am replied:

They could grab unused medkits and heal you when you are <100hp and there is no med around.
But again they can run off scared and get themself screwed, with medkit flying in a bottomless pit...
Just a suggestion\mindflow on this.

+2 votes     reply to comment
R0ADKILL May 29 2013, 3:45pm says:

Lab coat? Shoot on sight !!!

+1 vote     reply to comment
Dr.Scientist May 29 2013, 11:17pm says:

Just curious

Did you get the idea from these 2 videos?

Only asking

+1 vote     reply to comment
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Vcc2cc Jun 2 2013, 2:44pm says:

Just wow @ the Grunts AI. The taking advantage of explosives and rappelling is awesome.

+2 votes     reply to comment
Arkanium Jun 11 2013, 9:13pm says:

Good to see attention to detail in the AI; as you've already realised, this makes a big difference to immersion.

For the Grunts rappelling, would it be possible to have them attach the rope to the floor between their feet and have it go horizontally along the ground until it reaches the edge of the ledge they are on? At the moment the rope sometimes looks a little odd.

Edit: also, I love the cockroaches! Do the Houndeyes retreat intentionally? It didn't seem like it was just wonky pathfinding.

+1 vote     reply to comment Jun 12 2013, 3:50am replied:

Some Houndeyes are running away so they can attack you in the back. I know, it's not very clear in the video.

+2 votes     reply to comment
CmdrPenguin Jun 29 2013, 7:17pm says:

Big question! Will Shephard's Teammates behave the same way? I'd love to see your marine buddies rappelling down from catwalks while you take the high ground. That and the ability for Shephard himself to do the same.

+1 vote     reply to comment Jun 30 2013, 5:35pm replied:

Be patient :)

+1 vote     reply to comment
TheSleepingObama Jul 2 2013, 9:50pm says:

Don't have the new ai ability takeover the game

+2 votes     reply to comment
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dusmuvecis333 Aug 5 2013, 1:43pm says:

Will the player also be able to rappel, and work with them in squads? That would be very cool, like helping grunts in guard duty. Also, you could add some more things, like other campaign, or remake of OF mods nuclear winter and others. And also, the AI's could be smarter, by throwing nades into vents, taking cover, and other things.

+1 vote     reply to comment
PatrickGainher Aug 11 2013, 4:15am says:

Wow, this AI is looking REALLY, I mean, REALLY good!

This is something most games nowadays should focus on. It defineatly takes time, but just enhances experience. Defineatly looking foward to it, well done Tripmine!

Just saddens me, that I wished Black Mesa could do something like you guys are doing now.

+3 votes     reply to comment
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