rotate towards touch position around Z

Discussion in 'Android Development' started by jister, Apr 29, 2012.

  1. jister

    jister

    Member

    Joined:
    Oct 9, 2009
    Messages:
    890
    hey, i'm making my first android game and got a bit stuck at what i tought was going to be fairly simple.

    i got a game object that always moves forward and i want it to rotate smoothly towards the touch position so that it makes a nice curve.

    I'm only coding for a good 6 months learning from a friend at work bit by bit so i still get a bit confussed with all this quaternion stuff.
    anyway this is what i got so far, it does sometimes what i want :)

    Code (csharp):
    1. using UnityEngine;
    2. using System.Collections;
    3.  
    4. public class Controller : MonoBehaviour {
    5.  
    6.     public float speed;
    7.     public Vector3 axis;
    8.    
    9.    
    10.     void Update () {
    11.        
    12.           int i = 0;
    13.         while (i < Input.touchCount ) {
    14.            
    15.             if (Input.GetTouch(i).phase == TouchPhase.Began){
    16.                
    17.                 Vector3 touchPosition = Input.GetTouch(0).position;
    18.                 Vector3 relativeTP = touchPosition - transform.position;
    19.                 Quaternion targetRotation =  Quaternion.Euler (0,0,relativeTP.x + relativeTP.y );
    20.                 transform.rotation = Quaternion.Slerp(transform.rotation, targetRotation, Time.deltaTime * speed);
    21.  
    22.             }
    23.  
    24.            
    25.             ++i;
    26.         }
    27.     }
    28.  
    29.     void FixedUpdate () {
    30.      float autospeed = 5f;
    31.         transform.Translate(axis * (Time.deltaTime * autospeed));
    32.        
    33.     }
    34. }
    Last edited: Apr 29, 2012
  2. jister

    jister

    Member

    Joined:
    Oct 9, 2009
    Messages:
    890
    come on it can't be that hard for one off you guys to look at this and see whats wrong... ;-)