koobas.hobune.stream
2d animation from texture
hi guys,im having trouble with animating a texture and having the ability to restart the animation,i just cant restart it. here is the code that i have for animating the texture:
var framesPerSecond = 10.0; var uIndex; var index : int; var offset : Vector2; var size : Vector2;
function Update () { index = Time.time framesPerSecond; // repeat when exhausting all frames index = index % (uvAnimationTileX uvAnimationTileY); // Size of every tile var size = Vector2 (1.0 / uvAnimationTileX, 1.0 / uvAnimationTileY);
// split into horizontal and vertical index
var uIndex = index % uvAnimationTileX;
var vIndex = index / uvAnimationTileX;
// build offset
// v coordinate is the bottom of the image in opengl so we need to invert.
var offset = Vector2 (uIndex * size.x, 1.0 - size.y - vIndex * size.y);
renderer.material.SetTextureOffset ("_MainTex", offset);
renderer.material.SetTextureScale ("_MainTex", size);
}
any ideas how i can reset the animation,so it will start from the beginning(i need to reset the animation wen i go to a new animation=a new texture) thanks in advance!8-)
Hello, old question, but nobody answered, so i'll give a try. First all, I don't use the code of the script like u did(wiki), i made my own after playing around in the inspector values and reduced it to the most important things.
Sorry I use C# but in JS you can just put it into the start function or a normal function and call it once i think, because the for-loops never end.
You have to set variables in the inspector, be sure that AnimationCyclePerSecond isn't 0
using UnityEngine;
using System.Collections;
public class TextureAnimationScript : MonoBehaviour
{
public int TilesX;
public int TilesY;
public float AnimationCyclesPerSecond;
void Start ()
{
renderer.material.mainTextureScale = new Vector2(1.0f / TilesX, 1.0f / TilesY);
StartCoroutine(ChangeOffSet());
}
IEnumerator ChangeOffSet ()
{
for(int i = TilesY - 1; i > -1; i--)
{
for(int j = 0; j < TilesX; j++)
{
renderer.material.mainTextureOffset = new Vector2(1.0f / TilesX * j, 1.0f / TilesY * i);
yield return new WaitForSeconds(1.0f / (TilesX * TilesY * AnimationCyclesPerSecond));
if(i == 0 && j == TilesX - 1)
{
i = TilesY;
}
}
}
}
}
You need to store the time when the animation was started and then calculate
index = Time.time - AnimationStartTime * framesPerSecond;
Resetting the Animation is then as easy as setting AnimationStartTime to the current time.
