Power Ups

public class FlappyBird extends Actor
{
    /**
     * Act - do whatever the FlappyBird wants to do. This method is called whenever
     * the 'Act' or 'Run' button gets pressed in the environment.
     */
    // sets a variable
    int count = 0;
    int gravity = 0;
    boolean jumpPressed = false;
    public void act() 
    {
        //adds one to gravity
        gravity++;
        //adds one to count
        count++;
        //calls the methods
        hitEdge();
        Fall();
        Jump();
        hitBottomPipe();
        hitTopPipe();
        stayUpright();
        collectPowerUp();
    }   

    public void stayUpright()
    {
        //makes the bird rotate
        setRotation(getRotation() + 3);
    }

    public void Fall()
    {
        //sets what happens when the bird falls
        if(count % 3 == 0)
        {
            setLocation(getX(), getY() + gravity);
        }
    }

    public void Jump()
    {
        if (Greenfoot.isKeyDown("space") && !jumpPressed)
        {
            //if space is down the gravity will set to -24
            gravity = -20; 
            setRotation(-75);
            jumpPressed = true;
        }

        if (!Greenfoot.isKeyDown("space"))
        {
            jumpPressed = false;
        }
    }

    public void hitEdge()
    {
        //stops the game if the bird touches the top or the bottom
        if(isTouching(Ground.class) || getY() <= 1)
        {
            gravity = 0;
            Greenfoot.stop();
            GameOver gameOver = new GameOver();
            Greenfoot.setWorld(gameOver);
            return;

        }
    }

    public void hitBottomPipe()
    {
        //stops the game if the bird touches the tbottom pipes
        if(isTouching(BottomPipe.class))
        {
            gravity = 0;
            Greenfoot.stop();
            GameOver gameOver = new GameOver();
            Greenfoot.setWorld(gameOver);
            return;
        }
    }

    public void hitTopPipe()
    {
        //stops the game if the bird touches the top pipes 
        if(isTouching(TopPipe.class))
        {
            gravity = 0;
            Greenfoot.stop();
            GameOver gameOver = new GameOver();
            Greenfoot.setWorld(gameOver);
            return;
        }
    }
    
    public void collectPowerUp()
    {
        if (isTouching(PowerUps.class))
        {
            removeTouching(PowerUps.class); 
        }
    }
}

public class PowerUps extends Actor
{
    //sets variables
    int lineScaleDown;
    int  acrossScaleDown;
    /**
     * Act - do whatever the PowerUps wants to do. This method is called whenever
     * the 'Act' or 'Run' button gets pressed in the environment.
     */
    public void act() 
    {

    }  

    public void scaleDownImage(int x, int y)
    {
        //makes the method to resize the pipes
        lineScaleDown = x;
        acrossScaleDown = y;
        getImage().scale(getImage().getWidth()/lineScaleDown, getImage().getHeight()/acrossScaleDown);

    }
}

public class Imune extends PowerUps
{
    /**
     * Act - do whatever the Imune wants to do. This method is called whenever
     * the 'Act' or 'Run' button gets pressed in the environment.
     */
    //sets speed
    int speed = 5;
    public Imune()
    {
        //resizes the worm
        scaleDownImage(11,10);
    }

    public void act() 
    {
        moveAround();
    }   

    public void moveAround()
    {
        //moves the pipe across the screen
        setLocation(getX() - speed, getY());
    }
}

public class FlappyWorld extends World
{
    /**
     * Constructor for objects of class FlappyWorld.
     * 
     */
    // the beginning count 
    int count = 0;
    private static Counter cnt;
    public FlappyWorld()
    {    
        // resizes the world
        super(800, 600, 1, false); 
        cnt= new Counter();
        addObject(cnt, 100, 30);
        prepare();
    }

    public void act()
    {
        //adds one to the count
        count = count + 1;
        //calls the methods created
        addPipes();
        addPowerUps();
    }

    public void addPipes()
    {
        if(count % 100 == 0)
        {
            //adds a new pipe at the edge of the screen
            int randomNum = Greenfoot.getRandomNumber(6);
            addObject(new BottomPipe(), getWidth()-1, 350 + 50 * randomNum);
            addObject(new TopPipe(), getWidth()-1, -200 + 50 * randomNum);
        }
    }

    public void addPowerUps()
    {   //adds power ups
        if(count % 369 == 0)
        {
            int randomN = Greenfoot.getRandomNumber(6);
            addObject(new Imune(), getWidth()-1, 200 + 50 * randomN);
        }
    }
    
    public static Counter getCount(){
        return cnt;
    }

    /**
     * Prepare the world for the start of the program.
     * That is: create the initial objects and add them to the world.
     */
    private void prepare()
    {
        //makes what you go through
        MiddleInvisible mi15 = new MiddleInvisible();
        addObject(mi15, 75,570);
        //draw the ground
        Ground ground = new Ground();
        addObject(ground,296,575);
        Ground ground2 = new Ground();
        addObject(ground2,702,575);
        //draws the flappybird
        FlappyBird flappyBird = new FlappyBird();
        addObject(flappyBird,76,169);
    }
}