/*
 * Ristipolku
 * (C) Copyright 2011 Matti 'ccr' Hämäläinen <ccr@tnsp.org>
 */
package game;

import java.awt.*;
import java.awt.geom.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.*;


public class Piece
{
    static final int numConnections = 8;
    static final int minRotation = 0;
    static final int maxRotation = 3;
    int currRotation;
    int[] connections;
    PieceType type, oldType;

    boolean rotationChanged, rotationActive,
            typeChanged, typeActive;
    double currAngle, newAngle;

    public Piece(PieceType ptype)
    {
        // Initialize
        connections = new int[numConnections];
        type = ptype;

        rotationChanged = false;
        typeChanged = false;
        rotationActive = false;
        typeActive = false;
      
        currRotation = 0;
        currAngle = 0;


        // Initialize connections between endpoints of the paths inside the piece
        for (int i = 0; i < numConnections; i++)
            connections[i] = -1;

        Random rnd = new Random();
        for (int i = 0; i < numConnections; i++)
        {
            while (connections[i] < 0)
            {
                int tmp = rnd.nextInt(numConnections);
                if (connections[tmp] < 0)
                {
                    connections[i] = tmp;
                    connections[tmp] = i;
                }
            }
        }
    }

    public Piece()
    {
        this(PieceType.NONE);
    }

    public void setType(PieceType ptype)
    {
        typeChanged = (oldType != ptype);
        oldType = type;
        type = ptype;
    }

    public int getConnection(int in)
    {
        return connections[in];
    }
   
    public void rotate(boolean dir)
    {
        if (type != PieceType.NORMAL)
            return;

        newRotation = currRotation + (dir ? 1 : -1);

        if (newRotation < minRotation)
            newRotation = maxRotation;
        else if (currRotation > maxRotation)
            newRotation = minRotation;

        rotationDir = dir;
        rotationChanged = true;
     }
         
   public Point2D getPoint(double x, double y, double dim, int index)
   {
      double ox = 0, oy = 0;
      double step = dim / 10;
      
      switch (index) {
         case 0: ox = 3.0f; oy = 0.5f; break;
         case 1: ox = 7.0f; oy = 0.5f; break;
         case 2: ox = 9.5f; oy = 3.0f; break;
         case 3: ox = 9.5f; oy = 7.0f; break;
         case 4: ox = 7.0f; oy = 9.5f; break;
         case 5: ox = 3.0f; oy = 9.5f; break;
         case 6: ox = 0.5f; oy = 7.0f; break;
         case 7: ox = 0.5f; oy = 3.0f; break;
         
         case -1: ox = 5; oy = 5; break;
      }

      return new Point2D.Double(x + ox * step, y + oy * step);
   }
   
   public void animate(double time)
   {
      if (rotationChanged)
      {
         rotationTime = time;
         rotationActive = true;
      }

      if (rotationActive)
      {
         double t = time - rotationTime;
         rotationAngle = 
      }
      
   }

   public void paint(Graphics2D g, double x, double y, double dim)
   {
      AffineTransform save = g.getTransform();

      g.setStroke(new BasicStroke(4.0f));

      switch (type) {
         case NORMAL:  g.setPaint(Color.green); break;
         case ACTIVE:  g.setPaint(Color.red); break;
         case START:   g.setPaint(Color.orange); break;
      }

      AffiineTransform tf = new AffineTransform();
      tf.rotate(Math.toRadians(rotationAngle));
      g.transform(tf);
      g.fill(new RoundRectangle2D.Double(x, y, dim, dim, dim / 10, dim / 10));

      g.setPaint(Color.black);
      g.setStroke(new BasicStroke(4.0f));
      g.draw(new RoundRectangle2D.Double(x, y, dim, dim, dim / 10, dim / 10));

      if (type == PieceType.START)
         return;

      g.setStroke(new BasicStroke(6.0f));
//      CubicCurve2D c = new CubicCurve2D.Double();
      QuadCurve2D c = new QuadCurve2D.Double();

      for (int i = 0; i < numConnections / 2; i++)
      {
         Point2D start, cp1, cp2, end;

         start = getPoint(x, y, dim, i);
         end   = getPoint(x, y, dim, connections[i]);

//         cp1   = getPoint(x, y, dim, (i + 4) % 8);
//         cp2   = getPoint(x, y, dim, (connections[i] + 4) % 8);
         cp1 = getPoint(x, y, dim, -1);

         c.setCurve(start, cp1, end);
         g.draw(c);
      }
      
      g.setTransform(save);
   }
}