Unreal Engine 4 Tutorial - AI EQS Part 2 - Hiding from the Player 

In the new year for Patrons, a new AI series will be released. I like to alternate series with ai based ones. So look out for more AI stuff in the near future on my Patreon and a little further on on RU-vid.

I totally would love to see this! This is the core of a survival game I'm working on.

Sounds interesting. These are elements I'd like to later add to my game. I'm curious what all you've come up with to simulate these behaviors.

In your Character BP (or code) create a condition that is true/false depending on the state of the camouflage ability - set the condition when the character activates/deactivates camouflage. Then in the behavior tree, create a task that casts into your character file and grabs the state of the camouflage condition and stores it to a blackboard key that can later be used when determining if the character is using camouflage. Some of the earlier videos in this series cover flow control.

So this was an intro. I know do so series that show how to use this system in particular contexts. For example the shooter ai series. More AI series are on their way

@@RyanLaley nice thats perfect, i need me some bullets.

No idea. Probably not until UE5 now. But, it's mostly listed as experimental because it has no documentation and the UI is still too confusing.

Pretty sure it was 4.26

I'm working on the same thing. We need a test to make sure that the AI doesn't pick any points behind itself or the player so that it doesn't run towards the player. I'll let you know if I find a solution.

@@simenandrehadi2557 I think I found a solution, it is however a bit hard to test. The idea is that you can adjust the navmesh using custom collision. This is the principle: * Create two special 'object channels', "pray" and "hunter", via the project settings, under collision! * Add a special mesh - say a box or a cylinder - to the player character. * Make the box invisible in the game - you can have it as "text transparent" material in the editor. * Set the collision of that box to collision block 'objects type' pray, where it self is 'object type' hunter. * Finally make the CapsuleComponent of the AI (and your AI Pawn, or make a special AI-Pray-pawn) a "pray" type... Ones you get it right, you can see that the navmesh is generated so the AI can not go near a player. Then it is just a question of getting the right size/shape of the invisible mesh right. There may be ways of making a special mesh with debug options... I think i need to explain this a bit more and make a post in the UE4 forums. But check the net for ways to use 'object channel' and the navmesh... or perhaps there is an even better way?

@@PerFeldvoss I solved it aswell with the help of SparkyMcSparks, here's his quote: "Dot test, Line A from the player to your Querier (the deer), and Line B from the Querier to the Item A second dot with Line A being rotation of Querier, and Line B from Querier to Item. Set a clamp min to something tight like 0.7 and the scoring factor to 0.5"

@@simenandrehadi2557 Thanks - that works MUCH better (setting the score-only)! I did/do not know enough about the DOT test, and I also need to readup on EnvQueryContext... the EnvQueryContext_Item is what makes this operation work! (so I need to throw out what I made, or use it for an other purpose..!)

I am seeing the "running into player dangerously close" issue as well.

Hi, You Can possible Do this in many ways but from what i understand and the path i will take is as follows. Make A bool/Float(if you want slightly or fully visible part) inside the player Actor and use volumes On Light Entities, if the player enters the volume the Light Should Line Trace towards the Player(To see if the player is behind any object or not) and get the distance between the Player and Light Source, Depending on that distance you can toggle the Bool(IsVisible) ON or OFF. After That when you make Behavior Trees you can then tell the AI to Cast to the player and Check if Player's IsVisible True Or False, if True you can do the pervious tutorials about AI which Explains AI chasing and Attacking player. Hope That helps, I dont have much experince with UE4 but i have been modding and using other engines for a while So take me method as a prototype, Not sure what will be the performance impact or if it is Network friendly or not.

It was kind of broken into different sub series to tackle specific uses. For example the shooter so series. Currently patrons are getting the melee AI series and will then get a flying and a pet based series.

looks like he got bored

Nah, it was just fine. It's obvious what the tests do by their effect on the weighting. Far better than, say, CodeLikeMe's tutorial on the same topic.