import java.awt.*;

import java.awt.event.*;

import java.awt.font.LineMetrics;

import java.util.*;

// The "Piece" class.

public class Piece

{

protected Point centre;

protected int size;

protected Color colour;

// Piece Constructors

public Piece (Point centre, int size, Color colour)

{

this.centre = centre;

this.size = size;

this.colour = colour;

}

// public Piece (Point centre, Color colour)

//{

// Create piece with default size (20)

//this (centre, 20, colour);

//}

// Make a piece from another piece

public Piece (Piece otherPiece)

{

this (otherPiece.centre, otherPiece.size, otherPiece.colour);

}

// Set the position of a Piece from a point

public void setPosition (Point newPosition)

{

centre = newPosition;

}

// Set the position of a Piece from x and y

public void setPosition (int x, int y)

{

centre = new Point (x, y);

}

public void move (Point from, Point to)

{

centre = new Point (centre.x - from.x + to.x, centre.y - from.y + to.y);

}

// Change the colour of a Piece

public void setColour (Color newColour)

{

colour = newColour;

}

// Get the colour of a Piece

public Color getColour ()

{

return colour;

}

// Check if a point is contained within a piece

public boolean contains (Point p)

{

int distance = (int) (Math.sqrt (Math.pow (p.x - centre.x, 2) +

Math.pow (p.y - centre.y, 2)));

return (distance < size / 2);

}

// Draw the piece

public void draw (Graphics g)

{

g.setColor (colour);

System.out.println ("draw: " + centre.x + " - " + centre.y);

g.fillOval (centre.x - size / 2, centre.y - size / 2, size, size);

System.out.println ("drawn circle: " + (centre.x-size/2) + " - " + (centre.y-size/2));

}

// Draw a piece with a label in the centre

public void draw (Graphics g, String label)

{

// Draw the basic piece first;

draw (g);

// Draws the label in the centre of the Piece

g.setColor (Color.black);

FontMetrics fm = g.getFontMetrics (g.getFont ());

g.drawString (label, centre.x - fm.stringWidth (label) / 2, centre.y + fm.getAscent () / 2 - 1);

}

}