// GUI driver for TicTacToe class
// 2007-09-18

// Graham Mitchell

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

public class TicTacToeGUI extends Canvas implements MouseListener
{
	public static void main(String args[])
	{
		JFrame win = new JFrame("Tic Tac Toe");
		win.setSize(800,800);
		win.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		win.add( new TicTacToeGUI() );
		win.setVisible(true);
	}

	private char player = 'X';
	private TicTacToeClass ttt;
	private boolean started = false;
	private boolean gameOver = false;

	public TicTacToeGUI()
	{
		addMouseListener(this);
		ttt = new TicTacToeClass();
	}

	public void paint( Graphics g )
	{
		g.setColor( Color.white );
		g.fillRect( 0, 0, 800, 800 );

		if ( ! started )
		{
			g.setColor( Color.black );
			g.setFont( new Font("Arial", Font.BOLD, 48) );
			g.drawString( "click to play", 275, 400 );
		}
		else
		{
			drawEmptyBoard(g);
			for ( int r=0; r<3; r++ )
				for ( int c=0; c<3; c++ )
					if ( ttt.playerAt(r,c) != ' ' )
						drawSymbol(g, ttt.playerAt(r,c), r, c);

			gameOver = ( ttt.isWinner('X') || ttt.isWinner('O') || ttt.isFull() );
			if ( gameOver )
			{
				g.setFont( new Font("Arial", Font.BOLD, 144) );
				g.setColor( Color.black );
				if ( ttt.isWinner('X') )
					g.drawString("X wins!", 160, 400);
				if ( ttt.isWinner('O') )
					g.drawString("O wins!", 160, 400);
				if ( ttt.isCat() )
					g.drawString("TIE GAME", 50, 400);
			}
			else
			{
				g.setFont( new Font("Arial", Font.BOLD, 72) );
				g.setColor( Color.black );
				g.drawString( player + ", go.", 10, 730 );
			}
		}


	}

	public void drawEmptyBoard( Graphics g )
	{
		g.setColor(Color.black);
		// horizontal lines
		g.drawLine(100,250,700,250);
		g.drawLine(100,450,700,450);
		// vertical lines
		g.drawLine(300,50,300,650);
		g.drawLine(500,50,500,650);
		// labels
		g.drawString("(0,0)",102,62);
		g.drawString("(1,0)",102,262);
		g.drawString("(2,0)",102,462);

		g.drawString("(0,1)",302,62);
		g.drawString("(1,1)",302,262);
		g.drawString("(2,1)",302,462);

		g.drawString("(0,2)",502,62);
		g.drawString("(1,2)",502,262);
		g.drawString("(2,2)",502,462);
	}

	public void drawSymbol( Graphics g, char p, int r, int c )
	{
		int x = 200*c + 125;
		int y = 200*r + 85;
		if ( p == 'X' )
			drawX(g,x,y);
		else if ( p == 'O' )
			drawO(g,x,y);
		else
			drawError(g,x,y);
	}

	public void drawX( Graphics g, int x, int y )
	{
		g.setColor(Color.red);
		g.drawLine(x,y,x+150,y+150);
		g.drawLine(x+150,y,x,y+150);
	}

	public void drawO( Graphics g, int x, int y )
	{
		g.setColor(Color.blue);
		g.drawOval(x,y,150,150);
	}

	public void drawError( Graphics g, int x, int y )
	{
		// debugging code, in case drawSymbol is called with something other
		//   than 'X' or 'O'
		g.setColor(Color.red);
		g.fill3DRect(x-2,y-2,155,155,true);
		g.setColor(Color.yellow);
		g.fillArc(x,y,150,150,0,90);
		g.fillArc(x,y,150,150,180,90);
		g.setColor(Color.orange);
		g.fillArc(x,y,150,150,90,90);
		g.fillArc(x,y,150,150,270,90);
	}

	public void mouseClicked( MouseEvent evt )
	{
		int x = evt.getX();
		int y = evt.getY();
		
		if ( gameOver )
		{
			started = false;
			gameOver = false;
			ttt = new TicTacToeClass();
			repaint();
			return;
		}

		if ( ! started )
		{
			started = true;
			repaint();
			return;
		}

		int r = (y-85) / 200;
		int c = (x-125) / 200;

		if ( ttt.playerAt(r,c) == ' ' )
		{
			ttt.playMove(player,r,c);
			player = ( player == 'X' ? 'O' : 'X' );
		}
		repaint();
	}
	
	public void mousePressed ( MouseEvent evt ) {}
	public void mouseReleased( MouseEvent evt ) {}
	public void mouseEntered ( MouseEvent evt ) {}
	public void mouseExited  ( MouseEvent evt ) {}
}