General

How do I ask an Agent if he's reached his close enough distance to his PathManager's move target?

jcrouch — Thu, 09 Feb 2022 11:00:51 -0700

I have the following code in my scripts:

PathManager pathMan = gameObject.GetComponent().Agent.PathManager;
Vector3 dirToTarget = pathMan.moveTarget.TransformTarget.transform.position - gameObject.transform.position;
if ( dirToTarget.magnitude <= pathMan.closeEnoughDistance ) {
// we made it!
}

however, we never make it. The agent stops slightly before the close enough distance. (for example: my C.E.D. is 0.1 but the dirToTarget.magnitude is 0.233f).

Is there a handy callback or otherway to identify when the agent gets to his target location and stops?

Also, I tried placing the code above in a [code][/code] to no avail. Mind mentioning the correct syntax?

Activating/Running AI Behavior Tree

imranhoshimi — Thu, 02 Feb 2023 02:27:00 -0700

Hey Guys,

I have setup a basic behavior tree mind with behavior tree and seq node and action nodes in it. Now how can I activate/run it to do my logic which I wrote in classes which I mentioned in action nodes?

Things I have tried.

1) BTActivationManager
my code runs inside InitBehavior and PreAction inside my derived BTActivationManager class but how to activate the behavior tree now so that my code runs inside the derived Action class referenced in the action nodes in tree. i.e. in Start, Execute, Stop

Help needed.

Imran Hashmi,
Dubai Police

Does rain support moving platforms

CapelaGames — Mon, 12 Dec 2022 03:03:01 -0700

The AI in my game need to jump between various moving platforms in a 3d environment. Is it possible to path on moving platforms with rain?

Generate NavGrid at runtime?

austin — Sun, 20 Nov 2022 16:57:31 -0700

I have an idea for a procedurally generated game, just walls and floors kinda like a rogue-like, anyway I was wondering if it's possible to generate a navgrid at runtime? Has anyone tried this?

Does Rain work with Terrain 4 Mobile

DavidRivera — Wed, 16 Nov 2022 10:26:08 -0700

Hello,

I'm working on iPhone/iPad (and at a later date Android) game. Rain{One} looks like a good solution for our game, however, I have a few questions.

1. Will Rain work with Terrain 4 Mobile (particularly with uneven terrain)?

2. Will Rain work with a Mesh (there are instances where I use a mesh as a terrain)?

I looked at your tutorials and I am really impressed, but there are always limitation in what you can do on a mobile platform, and I need mobs to chase my character thru an uneven landscape.

Thanks,
Dave

Use for vehicle AI?

flahertyj — Mon, 12 Sep 2022 20:05:22 -0700

I'm looking into using an AI framework for a game I'm developing and I plan to have people (civilians and enemies) as well as cars (friendlies, enemies, and civilians). From the videos it looks like RainOne is well suited for people, but I didn't see to much on using it with vehicles.

Also, I am using physics dynamics (forces) to move the vehicles, not just adjusting the position

Would RainOne be a good solution for this? If so, could I get a link showing this?

Thanks in advance,
-John F.

Using RainOne tool in game mode

flahertyj — Tue, 13 Sep 2022 20:55:13 -0700

I'm looking to build a level editor for a game and I plan on using RainOne for a good amount of the AI. I would like to use the tools with RainOne such as plotting paths in the level editor which would actually be running a "game" and want to make sure I could have access to the tools in this.

Thanks in advance,
-John Flaherty

Tutorials?

klokker — Sun, 11 Sep 2022 21:53:31 -0700

Is there any video tutorials on its way.I read that there was going be, a video tutorial about the
gob and the tree-editor...and from what i can see ,the tutorials are behind RAIN 1.041.

regards Ahrens

Do RAIN supports IOS?

cremean — Fri, 22 Jul 2022 12:25:25 -0700

And how about the performance?

RAIN integration with Mixamo Animation

dilbertian — Wed, 27 Jul 2022 14:40:28 -0700

Would there be any issues integrating RAIN with the Mixamo characters?

Dynamic waypoints and navmesh

dkoontz — Mon, 25 Jul 2022 18:28:28 -0700

I have a dynamically generated terrain (using the Unity terrain system + a plane to represent the ocean), and I need to set up a pathfinding system to allow navigation on the surface plane around the terrain. My questions are:

1. Can waypoint placement and navmesh generation be done programatically and at runtime?
2. If I don't have information about the complete path between two points (I have dynamically placed cities), can Rain {One} generate a path based soley on a ground plane mesh? Specifically I have a plane that is my water surface (navigable), and the terrain is the non-navigable area of land. Currently I raycast to create a 100x100 grid of navigable/non-navigable points and use A* to generate a path around them.
3. Can I weight areas of my navmesh to give them a higher cost. I want ships to stay some distance away from the coastline instead of hugging it as closely as possible on turns.

documentation questions

nab477 — Sat, 06 Aug 2022 13:54:16 -0700

hi,
I'd like to begin by saying that I like everything I saw so far of Rain{one}.
& sadly, I still didn't buy it, but I've been reading the documentation so far, & I have a few questions
(I'll buy the plugin & try the different features, so some of these questions may be obvious for current owners)

anyway, on to the questions.
1) I noticed that in the documentation there's no mention of how to use the "Goal Action Mind", is this feature ready for use & lacks documentation ? or is it a planned feature ?

2) in the behavior trees, does the root node get called again after the full tree have been traversed ? or does it stop executing ?

3) for the node , attribute "tiebreaker" it states in the manual that it's used to reach a decision in case "succeed" & "fail" were both set to any & got a conflict because of that.
my question is what about if both were set to "all" & got triggered.
(I thought about it as there might be 2 possibilities, & therefore I'm asking about it & recommed you put the answer in the documentation (p.33) cause assumption is not something anybody should do while designing an A.I. behavior)
will it do:
a) count how many were successful & how many failed & return the one with higher count
b) return the result in the attribute "tiebreaker"

edit:
4) Steering behaviors are not mentioned in the documentation at all (or the video tutorials), I only read about them in another post (& maybe in the features page), any chance to explain what they are & when to use them in the near future ? (preferably, they should be added to the manual, even as a reference)

thanks

Framework questions

nab477 — Sat, 06 Aug 2022 14:05:58 -0700

hi,
I'm new to implementing A.I., & I intend to create small bits of A.I. based on known games to get familiar with the different approaches & to gain experience on how to implement my own A.I. depending on current projects.
so, I'd like to start by apologizing if the questions don't seem related (as part of only 1 game)

1) can I use a custom collider for the sensor ?
example: the sight range in Commandoes games & Metal gear solid, it's always triangle shaped & not box collider (with the tip being the eyes of the enemy)
so, I'm thinking that this can be implemented with a triangle mesh (with height) that has a mesh collider with "convex" set to true, but does the framework allow me to use the mesh/convex collider ?

2) along with GoTo(Y) in the path finding, is there a way to GetDistance(Y) first ?
example: if i have a character in Point X & he wants to go to the kitchen, but i have 2 kitchens at points Y, Z.
how do i determine which one has less walking distance ?
note: there's always the possibility that the closer one has a longer path to get to !!

3) in RTS games, when a group moves to the same point, will they avoid colliding with each other ? & will they stop near the point ?
note: I seem to remember some games giving each a group member a different point near the target, so I'm assuming that I'd have to do that part manually. (but I'd like to confirm)

Grafical Editor?

klokker — Tue, 09 Aug 2022 23:11:08 -0700

Hi vould like to know if the grafical editor for the behavior tree is to be released soon ,
or if IM going to wait for while yet,because im not the big programmer and im really looking forward to use this tool proberly

regards Ahrens

Is this AI suitable for a specific control setup.

runonthespot — Mon, 25 Jul 2022 09:23:43 -0700

I'm writing a 2.5d starship game similar to Star Control / Space wars / Asteroids. The rigidbody is Locked Y position, Locked X/Z rotation, to constrain it to a plane. Control consists of changing the rotation of the ship in place (not using torque, but a simple standard rotation that can be faster or slower depending on the ship type), and simply applying Force in the direction the ship is facing via a "thruster" control.

My question is, are the AI controller parts of your setup easy to customize, as I'm interested in the behavioural aspects of your system, but want my enemy AI to be operating under the same constraints that the player would have in terms of controlling the ship. Direct manipulation of the rigidbody for example, would not be suitable unless it could be manipulating the same controls that button-presses would manipulate.

Is this a suitable solution for that kind of customization, or would I be better off writing it myself?

License question

jaren — Mon, 01 Aug 2022 12:30:03 -0700

Is the licensing per seat? per project? per studio?

RAIN{one} Released!!!

prime — Thu, 21 Jul 2022 15:46:33 -0700

RAIN{one} is now available on the Unity Asset Store. And we at Rival Theory are here to help with any questions, requests, concerns, or comments you have. Here we go!

Performance Question

schneebly — Mon, 25 Jul 2022 21:55:39 -0700

What kind of performance can one expect to get out of Rain{one}? The tutorial video shows 1 AI but how many can you get going on a stress test keeping a good frame rate? Maybe a video demonstrating X amount of AI's doing various tasks/path finding?

Also side question ... Is the 100$ price firm or is that an early adopter price that will go up at a later time?

Sorry if these questions were answered already somewhere else. Thanx!

AI LOD?

cremean — Tue, 26 Jul 2022 18:07:55 -0700

Can I implement some kind of "AI LOD" with Rain One? eg,
I have several branches of behavior tree, when player is close to the AI controlled NPC, I want both branches executed;When player os far away from the NPC I want only limited or none of the branches executed to save some performance.

Is there beta program available?

cremean — Thu, 21 Jul 2022 22:21:47 -0700

If so, really like to get involved. :)

FSM (Finite state machine) support?

cremean — Thu, 21 Jul 2022 22:48:06 -0700

Is there FSM base AI support in Rain? Or you guys think Behavior Tree/Goal be superior than FSM on most cases?

Thanks.

BehaviorTree Editor?

cremean — Thu, 21 Jul 2022 22:18:30 -0700

Browsing the documentation, I notices the BTLoader class inside RAIN.BehaviorTrees package which will "load an xml file loader for AI behavior tree definitions". Is there an editor for building the behavior tree xml visually?