1

I have a sphere that I’m trying to move by swiping my finger across the screen, but I’m unable to figure it out. Any thoughts? I can’t get the sphere (called Ball) to move. I’m brand new to Unity, but here’s what I have so far:

using UnityEngine;
using System.Collections;

public class BallMover : MonoBehaviour{

private Vector2 startPos;
private Vector2 endPos;
private Vector2 touchPos;
private Rigidbody rb;
private Touch touch;

void Start(){
	rb = GetComponent<Rigidbody> ();
}

void FixedUpdate ()
{
	float speed = Time.time;
	float moveHorizontal;
	float moveVertical;

	// Check if user touches screen
	if (touch.phase == TouchPhase.Began)
	{
		// get the x and y coordinates of screen touch
		startPos = touch.position;
		endPos = touch.position;
		// set movement to 0
		moveHorizontal = 0.0f;
		moveVertical = 0.0f;
	}
	// Check if user removes finger from screen
	if (touch.phase == TouchPhase.Ended)
	{
		// get last finger touch coordinates
		endPos = touch.position;
		// record time it took to finish finger swipe
		//speed = Time.time - speed;
		// set movement to end touch minus begin touch for both x and y axis
		moveHorizontal = endPos.x - startPos.x;
		moveVertical = endPos.y - startPos.y;
		// create movement variable
		Vector3 movement = new Vector3(moveHorizontal, 0.0f, moveVertical);
		// add force to object
		rb.AddForce(movement * speed);
	}
}

}

2

You have declared a variable ‘touch’ and you are dealing with it a lot, but you didn’t define it!
At least you have to add this to your FixedUpdate():

FixedUpdate(){
    if(Input.touches.Length > 0){
        touch = Input.touches[0];
        
        //put your code inside the FixedUpdate() here
    }
}
3

That did it! You’re a life saver @jep7!!! Thanks!!!