AI "Collision" solutions.

[primeKeymaster]

If you haven’t already, please do. Contact Jester directly.

[emmcd3Participant]

Hello @Prime,

Did a resolution get posted that I missed on this one? I have a group of the attackers and of course they are all more or less in single file. I was hoping the “Avoidance” would help me to keep them spread out and more realistic.

[primeKeymaster]

Haven’t had a chance to take a look yet. I’ll see if I can get to it tonight.

[emmcd3Participant]

Excellent … thanks

[primeKeymaster]

Has this issue been resolved? I often can’t match projects I receive to the forum posts here.

[emmcd3Participant]

Well, I read that you were going to check for something regarding “Avoidance”. (?)

[CodersExpoParticipant]

Hey Redofpaw,
The video tutorial, you linked to above, was an old one I did with RAIN {indie}. Since the upgrade stuff has changed quite a bit. Try this code here. I’m assuming you (and anyone reading this..) will have already watched the basic tutorial videos Prime did. Anyway, basic behavior tree setup with a parallel node. Add the detect and custom action child nodes. Be sure the object doing the running away has a sensor. Add an aspect to your character (the one he is running from

using UnityEngine;
using System.Collections;
using System.Collections.Generic;
using RAIN.Core;
using RAIN.Action;
//using RAIN.BehaviorTrees;
using RAIN.Entities.Aspects;
//using RAIN.Minds;
//using RAIN.Memory;

[RAINAction]
public class PlayerAvoidance : RAINAction
{
private const float MINIMUM_DISTANCE = 3f;

private Vector3 _target;
private IList<RAINAspect> _targetsToAvoid;

public PlayerAvoidance()
{
actionName = “PlayerAvoidance”;
}

public override void Start(AI ai)
{
_targetsToAvoid = ai.Senses.Match(“Visual”, “HeroAspect”);
base.Start(ai);
}

public override ActionResult Execute(AI ai)
{
if(_targetsToAvoid != null)
{
foreach(var aspect in _targetsToAvoid)
{
if(isToClose(ai,aspect))
{
doAvoidance(ai, aspect);
}
}
}

return ActionResult.SUCCESS;
}

public override void Stop(AI ai)
{
base.Stop(ai);
}

#region
private void doAvoidance(AI ai, RAINAspect aspect)
{
var direction = ai.Kinematic.Position - aspect.Position;
//direction.Normalize();
ai.Motor.MoveTo(ai.Kinematic.Position + direction);
}

private bool isToClose(AI ai, RAINAspect aspect)
{
var dist = Vector3.Distance(ai.Kinematic.Position, aspect.Position);

if(dist <= MINIMUM_DISTANCE)
return true;

return false;
}
#endregion
}

[CodersExpoParticipant]

Just wanted to add a line to keep the target facing you…..

if(dist <= MINIMUM_DISTANCE)
return true;

_target = aspect.Entity.Form.transform;

ai.Motor.FaceAt(_target.position);

return false;

[Author]

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