import java.awt.*;

class Die
{
    private int value;
    private int edgeLength;
    private Color edgeColor;
    private Color dotColor;

    public Die()
    {
        value = 1;
        edgeLength = 100;
        edgeColor = Color.green;
        dotColor = Color.black;
    }

	/**
	 * @param val The initial value of the die.
	 * @param edge The length, in pixels, of each of the die's square's sides	
	 */
	public Die( int val, int eLength, Color eColor, Color dColor )
	{
        if( val >= 1  &&  val <= 6 )
            value = val;
        else
            value = 1;

        if( eLength > 0 )
            edgeLength = eLength;
        else
            edgeLength = 100;

        edgeColor = eColor;
        dotColor = dColor;
    }

  
    /**
     * Sets the current value of the die if <CODE>newValue</CODE> is legal.
     */
    public void setValue( int newValue )
    {
        if( newValue >= 1  &&  newValue <= 6 )
            value = newValue;
    }


	/**
	 * Sets the value to a random integer between 1 and 6.
	 */
	public void roll()
	{
		value = (int)(1 + Math.floor( 6 * Math.random() ));
	}


    /**
     * Draws the die on the given Graphics object.
     * The colors of the die are specified by <CODE>edgeColor</CODE>
     * and <CODE>dotColor</CODE>.
     *
     * @param x The x-coordinate of the upper left corner of the die's square.
     * @param y The y-coordinate of the upper left corner of the die's square.
     */
    public void draw( Graphics g, int x, int y )
    {
		g.setColor( edgeColor );
		g.drawRect( x, y, edgeLength, edgeLength );

		g.setColor( dotColor );
		int diameter = edgeLength / 7;

		// Upper left dot
		if( value == 4 || value == 5 || value == 6 )
			g.drawOval( x + diameter, y + diameter, diameter, diameter );

		// Upper right dot
		if( value == 2 || value == 3 || value == 4 || value == 5 || value == 6 )
			g.drawOval( x + 5*diameter , y + diameter, diameter, diameter );

		// Left & right dots
		if( value == 6 )
		{
			g.drawOval( x + diameter , y + 3*diameter, diameter, diameter );
			g.drawOval( x + 5*diameter, y + 3*diameter, diameter, diameter );
		}

		// Middle dot
		if( value == 1 || value == 3 || value == 5 )
			g.drawOval( x + 3*diameter, y + 3*diameter, diameter, diameter );

		// Lower left dot
		if( value == 2 || value == 3 || value == 4 || value == 5 || value == 6 )
			g.drawOval( x + diameter , y + 5*diameter, diameter, diameter );

		// Lower right dot
		if( value == 4 || value == 5 || value == 6 )
			g.drawOval( x + 5*diameter, y + 5*diameter, diameter, diameter );
    }
}