transform position y value

Unity Engine
1

Hi there, I have a basic script that simply makes a game object move towards an empty game object. The only problem is that I only want it to move towards it on the x and z axis. I tried making a ne vector with the x and z values of the empty game object and the y value of the character game object but for some reason it still points to the y axis. I’ll past snippets of my code and also the whole lot hopefully one of you can help. I thought maybe a vector 2 would do the trick but that actually takes the x and y positions not x and z which is what I need.

// this would be the new vector of the combined transform positions
Vector3 dirxz = new Vector3( path[currentPoint].position.x, transform.position.y, path[currentPoint].position.z);


// this is the movement part of the script only instead of the second value being path[currentPoint].position I would add the new vector I made
   if (Quaternion.Angle(transform.rotation, targetRotaion) <= 0.1f && move)
        {
            // turned = true;
            transform.position = Vector3.MoveTowards(transform.position, path[currentPoint].position, Time.deltaTime * speed);
        }

here’s the full code ignore the fact that it’s all over the place I’ll tidy it all up when I’m done.

public class R2D2_logic : MonoBehaviour {

    public Transform[] path;
    public float speed = 5.0f;
    public float rotspeed = 0.1f;
    public float reachDist = 1.0f;
    public int currentPoint = 0;
    public float rotation;
    public int complete = 0;
    public bool turned = false;
    public bool move = true;
    public AudioClip R2D2;


    Quaternion targetRotaion;

    private void Start()
    {
        //var R2D2: audio
    }



    // Update is called once per frame
    void Update () {



        float dist = Vector3.Distance(path[currentPoint].position, transform.position); // get distance between refernce and current pos
        //Debug.Log ("distance " + dist);


        Vector3 dir = path[currentPoint].position - transform.position;  // get target vector for pointing dirrection
       //Vector3 dirxz = new Vector3( path[currentPoint].position.x, transform.position.y, path[currentPoint].position.z);
        targetRotaion = Quaternion.LookRotation(dir); // gets quanterian vector dir
        transform.rotation = Quaternion.Lerp(transform.rotation, targetRotaion, Time.deltaTime * rotspeed); // turns R2D2 in dirrection of next point


        if (Quaternion.Angle(transform.rotation, targetRotaion) <= 0.1f && move)
        {
            // turned = true;
            transform.position = Vector3.MoveTowards(transform.position, path[currentPoint].position, Time.deltaTime * speed);
        }
    

        if (dist <= reachDist)
        {
            currentPoint++;
            AudioSource.PlayClipAtPoint(R2D2, transform.position, 1f);
            // Debug.Log("position" + currentPoint);
        }

        if (currentPoint >= path.Length)
        {
            currentPoint = 0;
            //Debug.Log("position" + currentPoint);
        }

    }

    void R2D2Events()
    {
        move = false;
    }

    void OnDrawGizmos()
    {
       
        if (path.Length > 0) {
            for (int i = 0; i < path.Length; i++)
            {
               
                if (path[i] != null)
                {
                   
                    Gizmos.DrawSphere(path[i].position, reachDist);
                }
            }
        }
   
    }
}
2

You find a point with the character y, but you don’t use it in the MoveTowards method.

  transform.position = Vector3.MoveTowards(transform.position, dirxz, Time.deltaTime * speed);

It’s probably the lookRotation that is causing the problem, though.

Vector3 dir = dirxz - transform.position;
 targetRotaion = Quaternion.LookRotation(dir);
3

Sorry I should have made it more clear, I took the new vector out of the MoveTowards as it was broken but when testing I had it in there. It was in my comments should have mentioned that part of the explanation was in there. Also WOW I can’t believe I overlooked that, this is almost definitely the problem good spot :slight_smile: I’ll get back to you and let you know if that does the trick.

4

Thanks a bunch this has solved the problem which means now my code will work on uneven ground if I ever need to do so. I’ll post the amended code below thanks again.

Let me know if you know of a better way of doing what I’m doing, I’m brand new to unity so still learning. Just doing it for fun and I’m open to all suggestions.

Vector3 dirxz = new Vector3( path[currentPoint].position.x, transform.position.y, path[currentPoint].position.z) - transform.position;
        targetRotaion = Quaternion.LookRotation(dirxz); // gets quanterian vector dir
5

Glad it worked out.

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