import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)

/**
 * Write a description of class Game here.
 * 
 * @author (your name)
 * @version (a version number or a date)
 */
public class Game extends World
{
    private Dave dave = new Dave();
    private Zombie zombie = new Zombie();
    private Score score = new Score();
    private int timer;

    /**
     * Constructor for objects of class Game.
     * 
     */
    public Game()
    {
        // Create a new world with 600x400 cells with a cell size of 1x1 pixels.
        super(600, 400, 1);
        addObject(dave, 20,345);
        addObject(score, 300,15);
    }
    
    /**
     * Act - do whatever the Game wants to do. This method is called whenever
     * the 'Act' or 'Run' button gets pressed in the environment.
     */
    public void act()
    {
        // Add your action code here.
        runTimer();
    }

    private void runTimer()
    {
        timer = (timer + 1) % 200;
        if (timer == 0) spawnZombie();
    }

    public Score getScore()
    {
        return score;
    }

    private void spawnZombie()
    {
        Zombie[] zombies = new Zombie[5];
        for (int i = 0; i < zombies.length; i++)
        {
            zombies[i] = new Zombie();
            int zombieX = Greenfoot.getRandomNumber(getWidth());
            int zombieY = 345;
            addObject(zombies[i], zombieX, zombieY);
        }
    }
}