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A java library that used over libGdx game framework.

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package com.ng.gdxutils.model;

import com.badlogic.gdx.math.Path;
import com.badlogic.gdx.math.Vector2;
import com.badlogic.gdx.scenes.scene2d.actions.TemporalAction;
import com.badlogic.gdx.utils.Pool;
import com.badlogic.gdx.utils.Pools;

/**
 * (c) 2016 Abhishek Aryan
 *
 * @author Abhishek Aryan
 * @since 24-07-2016
 *
 */
public class MoveAlongAction extends TemporalAction {

    private float x, y;
    private boolean rotate;
    private Path path;
    private Vector2 value = new Vector2();

    public Path getPath () {
        return path;
    }

    public void setPath (Path path) {
        this.path = path;
    }

    public boolean isRotate() {
        return rotate;
    }

    public void setRotate (boolean rotate) {
        this.rotate = rotate;
    }

    @Override
    protected void begin () {
        x = actor.getX();
        y = actor.getY();
    }

    @Override
    protected void update (float percent) {
        path.valueAt(value, percent);
        actor.setPosition(x + value.x, y + value.y);
        if (rotate) {
            actor.setRotation(path.derivativeAt(value, percent).angle());
        }
    }

    @Override
    public void reset () {
        super.reset();
        path = null;
    }

    /**Returns a new or pooled MoveAlongAction with the given path and a duration of {@code 1.0}. */
    public static MoveAlongAction obtain(Path path) {
        return obtain(path, 1.0f);
    }

    /**Returns a new or pooled MoveAlongAction with the given path and duration. */
    public static MoveAlongAction obtain(Path path, float duration) {
        Pool pool = Pools.get(MoveAlongAction.class);
        MoveAlongAction action = pool.obtain();
        action.setDuration(duration);
        action.setPath(path);
        action.setPool(pool);
        return action;
    }
}