public void checkCol()
	{
		//check player first
		for(int i = 0; i<numEnemy; i++)
			p1.checkCollision(enemy[i].row, enemy[i].column);

		if(!p1.alive)
		{
			lp.lives--;
			lp.updateLabels();
			gameOver = lp.lives<=0;
			if(!gameOver)
				reset();
			else
				repaint();
		}
		//check the enemies against themselves
		for(int i = 0; i<numEnemy; i++)
		{
			for(int j = 0; j<numEnemy; j++)
			{
				if(j != i)
					enemy[i].checkCollision(enemy[j].row, enemy[j].column);
			}
		}
	}