How to avoid enemies walk up in the air

Question

Hi everyone, I have a little problem that got stucked in a different question posted earlier t$$anonymous$$s week. I have an enemy that follows the player when he's at a certain distance. The t$$anonymous$$ng is that when the enemy is chasing the player, if he jumps, the Ai start to walk in the Y axis trying to reach the player in the air. How can I make the enemy follow the player, without walking in the air, keeping $$anonymous$$m on the ground, no matter if the player jumps or not?

Thanks!

Here's the script so far:

var LookAtTarget:Transform; var speed = 3.0; var proximity = 3.0; var maxDistance = 1.0;

function Start () { animation.wrapMode = WrapMode.Loop; }

function Update(){ var dist = Vector3.Distance(LookAtTarget.transform.position, transform.position);

     //check whether you are wit$$anonymous$$n target proximity
 if ( dist &lt; proximity &amp;&amp; dist &gt; maxDistance) {
     animation.CrossFade("threaten");
     transform.LookAt (LookAtTarget); //you look at player with t$$anonymous$$s
     transform.Translate (0,0,speed*Time.deltaTime);

//moves with speed in local z and you are looking toward $$anonymous$$m so you move toward the player //write other codes here } else if (dist < maxDistance) { animation.CrossFade("attack"); transform.LookAt (LookAtTarget); transform.Translate (0,0,0); } else { animation.CrossFade("idle"); } }

Answer 1

Best Answer

Answer by Bunny83 · Jan 25, 2011 at 07:58 PM

Like Scribe mentioned you should eliminate the y-part of the direction. That way your enemy turns just around the y-axis. I don't know what kind of game you try the make 2D sidescroll or 3D but anyway, it would be better to move your enemy with a charactercontroller or rigidbody. As far as i know if you set the position directly via Transform you bypass any collision detection. Add a characterController and use it's Move() function (works similar to Transform.Translate()). That would apply gravity to your enemy and it can walk ramps up and down.

edit

transform.LookAt(Vector3(LookAtTarget.position.x, transform.position.y, LookAtTarget.position.z));

instead of

transform.LookAt(Vector3(LookAtTarget.position.x, 0, LookAtTarget.position.z));

edit

transform.LookAt(Vector3(LookAtTarget.position.x, transform.position.y, LookAtTarget.position.z));
transform.localEulerAngles = Vector3(0,transform.localEulerAngles.y,0);

The second line just eliminates the rotation around x and z. Now it's impossible for the enemy to rotate around these axes.

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El ChiNo · Jan 25, 2011 at 08:50 PM 0

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Sorry for not being clear with my question, the game is a 3d, the player has a third person controller, and the script posted above is for the enemy.

El ChiNo · Jan 26, 2011 at 02:28 PM 0

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Thanks Scribe and Bunny83. It's working better than before. The Ai doesn't walk in the air anymore!. However, if the player jumps and stays over the enemy (like being stand on his head), the Ai still gets laydown on the ground, facing upward (being the player on top of him). I do not know how to avoid this.

Bunny83 · Jan 28, 2011 at 09:01 PM 0

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Ok, i guess you want to rotate you enemy just around y-axis, right? I will edit the answer to avoid rotation around x ans z

Answer 2

Answer by rasheedqw · Sep 15, 2013 at 07:01 AM

var target:Transform;

var rotationSpeed:int=2;

function Awake(){ myTransform = transform;

}

var lookPos = target.position - transform.position; lookPos.y = 0; var rotation = Quaternion.LookRotation(lookPos); transform.rotation = Quaternion.Slerp(transform.rotation, rotation, Time.deltaTime * rotationSpeed);

what you want is the character to stop rotating on the y axis the y is up z is back and forth and x is side to side i had the same problem t$$anonymous$$s solved it 100 percent

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How to avoid enemies walk up in the air

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