i have an issue that i hope it's easy to resolve. I'm playing various animations in my libgdx-created game.

For a particular animation, i need that to play in loop mode but only if a particular condition is true. Simple this far.

What i need is to "reset" the animation (i mean restart from sprite n°1) when the condition become true again after the animation stopped. I know that i can simply dispose the actual animation and create another one every time the condition is true, but this seems a complicated way to resolve this..

How do i change the value of the index used by that animation? Is it possible? Do i have to create a class that extends the Animation class from libgdx library?


Try only updating the state time of the animation when the condition is true, and then when it goes from false to true and the animation needs to re-start, set the state time to 0 again.

float stateTime;

void render() {
    if(condition) {
        stateTime += Gdx.graphics.getDeltaTime();

    frame = animation.getKeyFrame(stateTime, true);

void setCondition(boolean v){
    if (v && !condition)

    condition = v;

if you have an animation you have to give it a time, probably you give it your deltaTime but its wrong. You need a animTime, in your render you will make animTime+=deltaTime. When you want to reset simply set animTime to 0


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