using UnityEngine;

public class TextureMovementDemo : MonoBehaviour
{
	public float movementSpeed = 0.5f;

	public Sprite[] spriteArray;

	private int currentSpriteIndex;

	private Renderer materialRenderer;

	private Material material;

	private SpriteRenderer spriteRenderer;

	private void Start()
	{
		materialRenderer = GetComponent<Renderer>();
		material = materialRenderer.material;
		spriteRenderer = GetComponent<SpriteRenderer>();
		if (spriteArray.Length != 0)
		{
			spriteRenderer.sprite = spriteArray[currentSpriteIndex];
		}
	}

	private void Update()
	{
		float x = Time.time * movementSpeed;
		material.SetTextureOffset("_MainTex", new Vector2(x, 0f));
		if (Input.GetKeyDown(KeyCode.RightArrow))
		{
			ChangeSprite(1);
		}
		else if (Input.GetKeyDown(KeyCode.LeftArrow))
		{
			ChangeSprite(-1);
		}
	}

	private void ChangeSprite(int direction)
	{
		currentSpriteIndex += direction;
		if (currentSpriteIndex < 0)
		{
			currentSpriteIndex = 0;
		}
		else if (currentSpriteIndex >= spriteArray.Length)
		{
			currentSpriteIndex = spriteArray.Length - 1;
		}
		spriteRenderer.sprite = spriteArray[currentSpriteIndex];
	}
}