/**
 * Class Ball adalah class untuk bola nya
 *
 * @author Muhammad Bagus Istighfar
 * @version 16 Desember 2020
 */
import java.awt.Color;
import java.awt.Graphics;
import java.util.Random;
 
public class Ball
{
 
    public int x, y, width = 25, height = 25;
 
    public int motionX, motionY;
 
    public Random random;
 
    private Pong pong;
 
    public int amountOfHits;
 
    public Ball(Pong pong)
    {
        this.pong = pong;
 
        this.random = new Random();
 
        spawn();
    }
 
    public void update(Paddle paddle1, Paddle paddle2)
    {
        int speed = 5;
 
        this.x += motionX * speed;
        this.y += motionY * speed;
 
        if (this.y + height - motionY > pong.height || this.y + motionY < 0)
        {
            if (this.motionY < 0)
            {
                this.y = 0;
                this.motionY = random.nextInt(4);
 
                if (motionY == 0)
                {
                    motionY = 1;
                }
            }
            else
            {
                this.motionY = -random.nextInt(4);
                this.y = pong.height - height;
 
                if (motionY == 0)
                {
                    motionY = -1;
                }
            }
        }
 
        if (checkCollision(paddle1) == 1)
        {
            this.motionX = 1 + (amountOfHits / 5);
            this.motionY = -2 + random.nextInt(4);
 
            if (motionY == 0)
            {
                motionY = 1;
            }
 
            amountOfHits++;
        }
        else if (checkCollision(paddle2) == 1)
        {
            this.motionX = -1 - (amountOfHits / 5);
            this.motionY = -2 + random.nextInt(4);
 
            if (motionY == 0)
            {
                motionY = 1;
            }
 
            amountOfHits++;
        }
 
        if (checkCollision(paddle1) == 2)
        {
            paddle2.score++;
            spawn();
        }
        else if (checkCollision(paddle2) == 2)
        {
            paddle1.score++;
            spawn();
        }
    }
 
    public void spawn()
    {
        this.amountOfHits = 0;
        this.x = pong.width / 2 - this.width / 2;
        this.y = pong.height / 2 - this.height / 2;
 
        this.motionY = -2 + random.nextInt(4);
 
        if (motionY == 0)
        {
            motionY = 1;
        }
 
        if (random.nextBoolean())
        {
            motionX = 1;
        }
        else
        {
            motionX = -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.RED);
        g.fillOval(x, y, width, height);
    }
 
}