Rotation with Input.Touches

Questions & Answers
1

Hello,
I was looking for a way to rotate my object, based on the touch screen.
If I touch the right side of the screen, my character has to turn to the right until I press, in contrast to the left.
I tried that but it does not seem to work:

void Update(){
		ruota = this.transform.rotation;
		if(Input.GetTouch(0).position.x > Screen.width-100){
			ruota.y -= 0.2f;
			this.transform.rotation = ruota;
		}
		if(Input.GetTouch(0).position.x < 100){
			ruota.y += 0.2f;
			this.transform.rotation = ruota;
		}
		
			
	}

ruota is a quaternion.

2

You don’t want to be assigning or manipulating individual components (x,y,z,w) of a Quaternion. Quaternions are 4D constructs that are not intuitive. Unity gives you a variety of ways of dealing with rotations (some with pitfalls), besides directly manipulating a Quaternion. For what your are doing here, I’d use Transform.Rotate():

public class RotateScript: MonoBehaviour  {

public float speed = 45.0f;

 void Update(){
       if(Input.GetTouch(0).position.x > Screen.width-100){
         transform.Rotate(0.0f, Time.deltaTime * speed, 0.0f);
       }
       if(Input.GetTouch(0).position.x < 100){
         transform.Rotate(0.0f, -Time.deltaTime * speed, 0.0f);
       }
    }
}

‘speed’ will be the degrees per second the object will rotate. You want to scale your rotations by Time.deltaTime (as I’ve done here) to keep your rotation frame rate independent.