Bot Walker AI

Questions & Answers
1

I’am writing a simple bot AI. Generaly is has few components, on of them is botWalker.

It main task is to deliver Enemy to target point:

	if(Vector3.Distance(transform.position, _target.transform.position) < walkRange)  {
		_target = null;	
		
		return;
	}
	
	
	
	Debug.DrawLine(transform.position, _target.transform.position, Color.red);
	
	
	
 	turnTo(_target.transform.position);
	

	transform.position += transform.forward * AI.walkSpeed * Time.deltaTime;

Everythig works fine exept that All Enemys can stant into same points (itno each other). Is it some simple way to make it right?

2

You need some kind of object avoidance…I would use a raycast.

on the enemy:

var avoidDistance : float = 5;

in the Update:

         var fwd = transform.TransformDirection (Vector3.forward);
        var targetDir = transform.TransformDirection(transform.position - _target.transform.position);
        var hit : RaycastHit;
        var hit2 : RaycastHit;
            if (Physics.Raycast (transform.position, fwd,hit, avoidDistance)) 
            if(hit.gameObject.tag == "enemy")
        {
         var relativePoint = transform.InverseTransformPoint(_target.transform.position);
                if(relativePoint > 0.0)
                transform.Rotate(Vector3.left * Time.deltaTime);
        else
         transform.Rotate(-Vector3.left * Time.deltaTime);
    
    }
            else if(Physics.Raycast (transform.position, targetDir,hit2, avoidDistance))
            if(hit2.gameObject.tag == "enemy")
              transform.position += transform.forward * AI.walkSpeed * Time.deltaTime; 
            else if (fwd != targetDir)
            {
         var targetRotation = Quaternion.LookRotation(_target.transform.position - transform.position, Vector3.up);
                    transform.rotation = Quaternion.Slerp(transform.rotation, targetRotation, Time.deltaTime * 2.0);    
        }
    else
transform.position += transform.forward * AI.walkSpeed * Time.deltaTime;

Untested…

3

Not yet :slight_smile: Will try it, thx

4

Seth Bergman, thx for your time, I got this code with your help

public void turnTo(Vector3 point) {
	Vector3 direction  = point - transform.position;

	// Rotate towards the target
    transform.rotation = Quaternion.Slerp (transform.rotation, Quaternion.LookRotation(direction), AI.rotationSpeed * Time.deltaTime);
	
	transform.eulerAngles = new Vector3(0, transform.eulerAngles.y, 0);
}

private void followHandler() {

	if(Vector3.Distance(transform.position, _target.transform.position) < walkRange)  {
		_target = null;	
		
		return;
	}

	Debug.DrawLine(transform.position, _target.transform.position, Color.red);
	
	Vector3 fwd = transform.TransformDirection (Vector3.forward);
    
	RaycastHit hit;
	
	if(Physics.Raycast(transform.position, fwd, out hit, avoidDistance)) {
		if(hit.collider.gameObject.tag == gameObject.tag) {
			
			transform.rotation = Quaternion.Slerp (transform.rotation, Quaternion.LookRotation(Vector3.left), AI.rotationSpeed * Time.deltaTime);
			transform.eulerAngles = new Vector3(0, transform.eulerAngles.y, 0);
			
		}
	} else {
		turnTo(_target.transform.position);
		transform.position += transform.forward * AI.walkSpeed * Time.deltaTime;
	}

}

followHandler starting every update. Just two problems left.

  1. Bot has always avoids the barrier on the left
  2. It realy slow choosing direction when a lot barrier’s ahead

The wy to fix it ray cast a lot of rays and chhose direction, but i Think that is not the best solution? probably some body has better ideas?