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package cc.polyfrost.oneconfig.gui.animations;
import cc.polyfrost.oneconfig.gui.OneConfigGui;
public abstract class Animation {
private final int duration;
private final float start;
private final float change;
private long timePassed = 0;
/**
* @param duration The duration of the animation
* @param start The start of the animation
* @param end The end of the animation
* @param reverse Reverse the animation
*/
public Animation(int duration, float start, float end, boolean reverse) {
this.duration = duration;
this.start = start;
if (!reverse) this.change = end - start;
else this.change = start - end;
}
/**
* @param deltaTime The time since the last frame
* @return The new value
*/
public float get(long deltaTime) {
timePassed += deltaTime;
if (timePassed >= duration) return start + change;
return animate(timePassed, duration, start, change);
}
/**
* @return The new value
*/
public float get() {
return get(OneConfigGui.getDeltaTimeNullSafe());
}
/**
* @return If the animation is finished or not
*/
public boolean isFinished() {
return timePassed >= duration;
}
protected abstract float animate(long timePassed, int duration, float start, float change);
}
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