Countdown.java

package de.swagner.paxbritannica.mainmenu;

import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.g2d.Batch;
import com.badlogic.gdx.graphics.g2d.Sprite;
import com.badlogic.gdx.math.Vector2;

import de.swagner.paxbritannica.Resources;

public class Countdown extends Sprite {

	public boolean finished = false;

	private boolean showed = true;

	private float fade = 0.0f;

	private int cnt = 5;
	
	float delta;

	private Vector2 position = new Vector2();

	public Countdown(Vector2 position) {
		this.position = position;

		changeTexture(5);
	}
	
	public void reset() {
		changeTexture(5);
		finished = false;
		showed = true;
		fade = 0.0f;
		cnt = 5;
		this.setRotation(0);
		this.setScale(1f);
		this.setPosition(position.x, position.y);
		this.setColor(0, 0, 0, 0);
	}

	private void changeTexture(int id) {

		switch (id) {
		case 5:
			this.set(Resources.getInstance().cnt5);
			break;
		case 2:
			this.set(Resources.getInstance().cnt2);
			break;
		case 3:
			this.set(Resources.getInstance().cnt3);
			break;
		case 4:
			this.set(Resources.getInstance().cnt4);
			break;
		default:
			this.set(Resources.getInstance().cnt1);
			break;
		}
		this.setRotation(0);
		this.setScale(1f);
		this.setPosition(position.x, position.y);
		this.setColor(0, 0, 0, 1);
	}

	@Override
	public void draw(Batch batch) {
		delta = Math.min(0.06f, Gdx.graphics.getDeltaTime());
		
		super.draw(batch);

		if (cnt < 1) {
			finished = true;
			this.setColor(1, 1, 1, 0);
			return;
		}

		if (showed) {
			fade = Math.min(fade + delta * 2.f, 1);
		} else {
			fade = Math.max(fade - delta * 2.f, 0);
		}
		this.setColor(1, 1, 1, fade);

		if (fade == 1) {
			showed = !showed;
		}
		if (fade == 0) {
			showed = !showed;
			--cnt;
			changeTexture(cnt);
		}
	}
}