ブロック崩し作ったけどガバガバ仕様(1.8)

TinyPong.java

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

class myPanel extends JPanel implements ActionListener, KeyListener{
	int x = 30, y = 20;
	int dx = 12, dy = 5, d = 30;
	int padY = 55;
	int pd = 0;
	Timer pTimer;
	final int width, hight;
	int block[][] = {
		{1,1,1},
		{1,1,1},
		{1,1,1},
		{1,1,1},
		{1,1,1},
		{1,1,1},
		{1,1,1}
	};
	
	public myPanel(int w, int h){
		width = w;
		hight = h;
		setPreferredSize(new Dimension(w, h));
		setBackground(Color.black);
		pTimer = new Timer(100, this);
		addKeyListener(this);
	}
	
	public void start(){
		pTimer.start();
	}
	
	@Override
	public void paintComponent(Graphics g){
		super.paintComponent(g);
		g.setColor(Color.white);
		g.fillRect(30, 0, width, 5);
		g.fillRect(width-5, 0, 5, hight);
		g.fillRect(30, hight-5, width, 5);
		
		g.fillOval(x, y, 10, 10);
		
		g.fillRect(20, padY, 8, 30);
		
		for(int i = 0; i <  block.length; i++){
			for(int j = 0; j < block[i].length; j++){
				if(block[i][j]==1){
					g.fillRect(200 + j * 30, 5 +  i * 20, 30, 20);
				}
			}
		}
		g.drawString(""+((x-200)/30)+","+((y-5)/20),50,50);
	}
	
	@Override
	public void actionPerformed(ActionEvent e){
		padY += pd;
		
		if(padY < 0)
			padY = 0;
		else if(padY > hight - 30)
			padY = hight - 30;
			
		x += dx;
		y += dy;
		
		if(x > width - 15){
			dx *= -1;
			x = width - 15;
		}
		if(y < 5){
			dy *= -1;
			y = 5;
		}else if(y > hight - 15){
			dy *= -1;
			y = hight - 15;
		}
		
		if((x < 30)&&(y >= padY)&&(y <= padY+30)){
			dx *= -1;
			x = 30;
		}
		if(x>200){
			System.out.print((x-200)/30);
			if(block[(y-5)/20][(x-200)/30]==1){
				block[(y-5)/20][(x-200)/30]=0;
				x -= (x-200)%30;
				dx *= -1;
			}
		}
	
		repaint();
	}
	
	@Override
	public void keyPressed(KeyEvent e){
		switch(e.getKeyCode()){
			case KeyEvent.VK_UP:
				pd = -10;
				break;
			case KeyEvent.VK_DOWN:
				pd = 10;
				break;
		}
	}
	
	@Override
	public void keyReleased(KeyEvent e){
		switch(e.getKeyCode()){
			case KeyEvent.VK_UP:
			case KeyEvent.VK_DOWN:
				pd = 0;
				break;
		}
	}
	
	@Override
	public void keyTyped(KeyEvent e){ }
	
	@Override
	public boolean isFocusable(){
		return true;
	}
}

public class TinyPong{
	public static void main(String[] args){
		JFrame f = new JFrame();
		f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		f.setLayout(new BorderLayout());
		f.setSize(300,200);
		f.setTitle("TingPong");
		f.setResizable(false);
		Container contentPane = f.getContentPane();
		myPanel p = new myPanel(300,150);
		
		contentPane.add(p,"Center");
		p.start();
		
		f.setVisible(true);
	}
}