Ball

import java.awt.Color;
import java.awt.Graphics;
import java.util.Random;
public class Ball
{
    public int x, y, width = 40, height = 40;
    public int moveX, moveY;
    public Random random;
    public int amountOfHits;
    private Pong pong;
    public Ball(Pong pong)
    {
        this.pong = pong;
        this.random = new Random();
        spawn();
    }

    public void update(Paddle paddle1, Paddle paddle2)
    {
        int speed = 5;
        this.x += moveX * speed;
        this.y += moveY * speed;

        if(this.y + height - moveY > pong.height || this.y + moveY < 0)
        {
            if(this.moveY < 0)
            {
                this.moveY = random.nextInt(4);

                if(moveY == 0)
                {
                    moveY = 1;
                }
            }
            else
            {
                this.moveY = -random.nextInt(4);
                this.y = pong.height - height;

                if(moveY == 0)
                {
                    moveY = -1;
                }
            }
        }
        if (checkCollision(paddle1) == 1)
        {
            this.moveX = 1 + (amountOfHits / 5);
            this.moveY = -2 + random.nextInt(4);

            if (moveY == 0)
            {
                moveY = 1;
            }

            amountOfHits++;
        }
        else if (checkCollision(paddle2) == 1)
        {
            this.moveX = -1 - (amountOfHits / 5);
            this.moveY = -2 + random.nextInt(4);

            if (moveY == 0)
            {
                moveY = 1;
            }

            amountOfHits++;
        }
    }

    public void spawn()
    {
        this.amountOfHits = 0;
        this.x = pong.width/2 - this.width/2;
        this.y = pong.height/2 - this.height/2;

        this.moveY = -2 + random.nextInt(4);

        if(moveY == 0)
        {
            moveY = 1;
        }

        if(random.nextBoolean())
        {
            moveX = 1;
        }
        else
        {
            moveX = -1;
        }
    }
    public int checkCollision(Paddle paddle)
    {
        if (this.x < paddle.x + paddle.width && this.x + width > paddle.x && this.y < paddle.y + paddle.height && this.y + height > paddle.y)
        {
            return 1; //bounce
        }
        else if ((paddle.x > x && paddle.paddleNumber == 1) || (paddle.x < x - width && paddle.paddleNumber == 2))
        {
            return 2; //score
        }

        return 0; //nothing
    }

    public void render(Graphics g)
    {
        g.setColor(Color.BLACK);
        g.fillOval(x, y, width, height);
    }

}