Script offset problem \(>.<)/

[FEARCOOKIE]

I’m making a 2d platformer where a player is controlled by the arrow keys , so far he can go left and right. I’m using a sprite sheet that I created resolution is 5337x796 its a simple walk-cycle 1 row and 8 columns. I’m using a plane to control the image.

THE PROBLEM:
the problem is that when the character moves the offset changes on the y axis, but since my image is 1 row ,well it looks weird. how can I alter my script to change the offset on the x axis instead of the y(like its doing currently).

Script:

using UnityEngine;
using System;
using System.Collections;
 
public class Test : MonoBehaviour
{
    public int columns = 2;
    public int rows = 2;
    public float framesPerSecond = 10f;
		
	
	
	public float TranslationSpeed = 0.5f;
	public float RotationSpeed = 500f;
    float animationTime = 0f;
	int lastDirection = 1;
	
    //the current frame to display
    private float index = 0;
 
	
	
	void Update ()
	{
		// Get a value that indicates if the right/left keys are pressed:
		float horiz = Input.GetAxis("Horizontal");
		
		#region Translation
		// Move the character based on the right/left key press:
		float motion = horiz * Time.deltaTime * TranslationSpeed;
		transform.Translate(motion, 0, 0, Space.World);
		#endregion
		
		
		#region Cartoon animation
		animationTime += Math.Abs(horiz) * Time.deltaTime * framesPerSecond;
		if (animationTime >= 1f)
		{
			animationTime--;
			index++; 
			
			if (index >= rows * columns)
				index = 0;
			
		}
		
		#endregion
		
		#region Flip figure
		// Figure out which direction the model should face based on the movement direction:
		int faceDirection = Math.Sign(horiz);
		if (faceDirection == 0) // If the model isn't moving, then keep it facing the previous way.
			faceDirection = lastDirection;
		lastDirection = faceDirection;

		// To give the impression of a piece of paper being flipped over, rotate the model to face the new direction over a period of time:
		float angle = transform.localEulerAngles.y;
		if (faceDirection == 1 && angle < 180f)
		{
			angle += Time.deltaTime * RotationSpeed;
			if (angle > 180f)
				angle = 180f;
		}
		else if (faceDirection == -1 && angle > 0f)
		{
			angle -= Time.deltaTime * RotationSpeed;
			if (angle < 0f)
				angle = 0f;
		}
		transform.localEulerAngles = new Vector3(0, angle, 0);
		#endregion
		
		
	}
		
		
		
    void Start()
    {
        StartCoroutine(updateTiling());
 
        //set the tile size of the texture (in UV units), based on the rows and columns
        Vector2 size = new Vector2(1f / columns, 1f / rows);
        renderer.sharedMaterial.SetTextureScale("_MainTex", size);		
    }
 
    private IEnumerator updateTiling()
    {
        while (true)
        {
          /*  
             //move to the next index
            index++;
            if (index >= rows * columns)
                index = 0;
			 */
		
 
            //split into x and y indexes
            Vector2 offset = new Vector2((float)index / columns - (index / columns), //x index
                                          (index / columns) / (float)rows);          //y index
 
            renderer.sharedMaterial.SetTextureOffset("_MainTex", offset);
 
            yield return new WaitForSeconds(1f / framesPerSecond);
        }
 
    }
}

[9417-screenshot+(5).png|9417]

[ByteSheep]

I think this should work for the y offset too:

Vector2 offset = new Vector2(((float)index / columns) / (float)rows, (index / columns) / rows);

Glad it worked