package net.minecraft.world.entity;

import java.util.function.Consumer;

public class AnimationState {
	private static final int STOPPED = Integer.MIN_VALUE;
	private int startTick = Integer.MIN_VALUE;

	public void start(final int tickCount) {
		this.startTick = tickCount;
	}

	public void startIfStopped(final int tickCount) {
		if (!this.isStarted()) {
			this.start(tickCount);
		}
	}

	public void animateWhen(final boolean condition, final int tickCount) {
		if (condition) {
			this.startIfStopped(tickCount);
		} else {
			this.stop();
		}
	}

	public void stop() {
		this.startTick = Integer.MIN_VALUE;
	}

	public void ifStarted(final Consumer<AnimationState> timer) {
		if (this.isStarted()) {
			timer.accept(this);
		}
	}

	public void fastForward(final int ticks, final float timeScale) {
		if (this.isStarted()) {
			this.startTick -= (int)(ticks * timeScale);
		}
	}

	public long getTimeInMillis(final float ageInTicks) {
		float timeInTicks = ageInTicks - this.startTick;
		return (long)(timeInTicks * 50.0F);
	}

	public boolean isStarted() {
		return this.startTick != Integer.MIN_VALUE;
	}

	public void copyFrom(final AnimationState state) {
		this.startTick = state.startTick;
	}
}