// Simple Maze demo

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

public class SimpleMaze extends Applet implements KeyListener
{
   int x;
   int y;

   public void init()
   {
      setBackground(Color.black);
      x = 10;
      y = 10;
      addKeyListener(this);     
   }

   public void keyPressed(KeyEvent e) {}
  
   public void keyReleased(KeyEvent e) {}
   
   public void keyTyped(KeyEvent e)
   {
      char c = e.getKeyChar();
      
      if (c == 'w')
      {
      	y -= 10;
      }
      else if (c == 's')
      {
      	y += 10;
      }
      else if (c == 'a')
      {
      	x -= 10;
      }
      else if (c == 'd')
      {
      	x += 10;
      }
      
      if (c != KeyEvent.CHAR_UNDEFINED)
      {
         repaint();
         e.consume();
      }
   }

   public void paint(Graphics g) 
   {
   	  requestFocus();			// necessary so the applet has the initial focus

   	  if (!collisionDetection())
   	  {
	      g.setColor(Color.gray);
	      g.drawLine(0, 100, 250, 100);
	      // draw many more lines here

	      g.setColor(Color.green);
	      g.fillRect(x, y, 20, 20); // player's square
	  }
	  else
	  {
	  	  g.setColor(Color.yellow);
	  	  g.drawString("LOSER", 130, 150);
	  }
   }
   
   public boolean collisionDetection()
   {
   	  if (x < 250 && y < 100 && y + 20 > 100)		// line segment 1
      {
      	return true;
      }
      // many more else if clauses here for a good maze
      
      return false;
   }
}