package net.minecraft.util;

public class SmoothDouble {
	private double targetValue;
	private double remainingValue;
	private double lastAmount;

	public double getNewDeltaValue(double input, double multiplier) {
		this.targetValue += input;
		double d = this.targetValue - this.remainingValue;
		double e = Mth.lerp(0.5, this.lastAmount, d);
		double f = Math.signum(d);
		if (f * d > f * this.lastAmount) {
			d = e;
		}

		this.lastAmount = e;
		this.remainingValue += d * multiplier;
		return d * multiplier;
	}

	public void reset() {
		this.targetValue = 0.0;
		this.remainingValue = 0.0;
		this.lastAmount = 0.0;
	}
}