//=============================================================================
//
// Rubik's Cube Java Applet
//
// Version 1.2 -- June 1 1997
//
// Copyright 1995, 1996, 1997  Michael Schubart (schubart@best.com)
// http://www.best.com/~schubart/
//
// The applet plus additional information can be found at
// http://www.best.com/~schubart/rc/
// 
//=============================================================================

import java.applet.AudioClip;
import java.awt.BorderLayout;
import java.awt.Button;
import java.awt.Checkbox;
import java.awt.Event;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.image.CropImageFilter;
import java.awt.image.FilteredImageSource;
import java.awt.Label;
import java.awt.MediaTracker;
import java.awt.Panel;
import java.awt.TextField;
import java.net.MalformedURLException;
import java.net.URL;

class RCCubelet
//=============================================================================
// The RCCubelet class represents one of the 27 cubelets the cube is made of.
//=============================================================================
{
  // names for the faces 
  final static int FACE_NONE=-1;      // none
  final static int FACE_XV=0;         // orthogonal to x-axis and visible
  final static int FACE_XH=1;         // orthogonal to x-axis and hidden 
  final static int FACE_YV=2;         // and so on
  final static int FACE_YH=3;
  final static int FACE_ZV=4;
  final static int FACE_ZH=5;

  // names for the axis (axises ?)
  final static int AXIS_X=0;
  final static int AXIS_Y=1;
  final static int AXIS_Z=2;

  // stores the color of each of the 6 faces
  protected int[] colors=new int[6];

  public RCCubelet()
  //===========================================================================
  // Constructor, initializes each of the faces with a different color.
  //===========================================================================
  {
    for (int i=0;i<6;i++)
      colors[i]=i;
  }

  public int getColor(int face)
  //===========================================================================
  // Can be used to query the color of one face.
  // return value:  the color
  //===========================================================================
  {
    return colors[face];
  }

  public void rotate(int axis, int direction)
  //===========================================================================
  // Rotate the cubelet. 
  // axis:        the axis around which to rotate
  // direction:   the direction in which to rotate 
  //===========================================================================
  {
    int buffer;

    switch (axis)
    {
      case AXIS_X:
        if (direction==1)
        {
          buffer=colors[FACE_YV];      
          colors[FACE_YV]=colors[FACE_ZH];
          colors[FACE_ZH]=colors[FACE_YH];
          colors[FACE_YH]=colors[FACE_ZV];
          colors[FACE_ZV]=buffer;
        }
        if (direction==-1)
        {
          buffer=colors[FACE_YV];      
          colors[FACE_YV]=colors[FACE_ZV];
          colors[FACE_ZV]=colors[FACE_YH];
          colors[FACE_YH]=colors[FACE_ZH];
          colors[FACE_ZH]=buffer;
        }
        break;
      case AXIS_Y:
        if (direction==1)
        {
          buffer=colors[FACE_XV];      
          colors[FACE_XV]=colors[FACE_ZV];
          colors[FACE_ZV]=colors[FACE_XH];
          colors[FACE_XH]=colors[FACE_ZH];
          colors[FACE_ZH]=buffer;
        }
        if (direction==-1)
        {
          buffer=colors[FACE_XV];      
          colors[FACE_XV]=colors[FACE_ZH];
          colors[FACE_ZH]=colors[FACE_XH];
          colors[FACE_XH]=colors[FACE_ZV];
          colors[FACE_ZV]=buffer;
        }
        break;
      case AXIS_Z:
        if (direction==1)
        {
          buffer=colors[FACE_XV];      
          colors[FACE_XV]=colors[FACE_YH];
          colors[FACE_YH]=colors[FACE_XH];
          colors[FACE_XH]=colors[FACE_YV];
          colors[FACE_YV]=buffer;
        }
        if (direction==-1)
        {
          buffer=colors[FACE_XV];      
          colors[FACE_XV]=colors[FACE_YV];
          colors[FACE_YV]=colors[FACE_XH];
          colors[FACE_XH]=colors[FACE_YH];
          colors[FACE_YH]=buffer;
        }
        break;
    }
  }
}

class RCCube
//=============================================================================
// The RCCube class represents the whole cube, which is made of 27 cubelets.
//=============================================================================
{
  // the cubelets
  protected RCCubelet[][][] cubelet=new RCCubelet[3][3][3];

  protected int[][][][] moves={

    // AXIS_X

    {{{0,0,0}, {0,0,2}, {0,2,2}, {0,2,0}, {0,0,1}, {0,1,2}, {0,2,1}, {0,1,0}},
     {{1,0,0}, {1,0,2}, {1,2,2}, {1,2,0}, {1,0,1}, {1,1,2}, {1,2,1}, {1,1,0}},
     {{2,0,0}, {2,0,2}, {2,2,2}, {2,2,0}, {2,0,1}, {2,1,2}, {2,2,1}, {2,1,0}}},

    // AXIS_Y

    {{{0,0,0}, {2,0,0}, {2,0,2}, {0,0,2}, {1,0,0}, {2,0,1}, {1,0,2}, {0,0,1}},
     {{0,1,0}, {2,1,0}, {2,1,2}, {0,1,2}, {1,1,0}, {2,1,1}, {1,1,2}, {0,1,1}},
     {{0,2,0}, {2,2,0}, {2,2,2}, {0,2,2}, {1,2,0}, {2,2,1}, {1,2,2}, {0,2,1}}},

    // AXIS_Z

    {{{0,0,0}, {0,2,0}, {2,2,0}, {2,0,0}, {0,1,0}, {1,2,0}, {2,1,0}, {1,0,0}},
     {{0,0,1}, {0,2,1}, {2,2,1}, {2,0,1}, {0,1,1}, {1,2,1}, {2,1,1}, {1,0,1}},
     {{0,0,2}, {0,2,2}, {2,2,2}, {2,0,2}, {0,1,2}, {1,2,2}, {2,1,2}, {1,0,2}}}

  };
  
  public RCCube()
  //===========================================================================
  // Constructor, creates the cubelets. Since all the cubelets are equal, the 
  // cube is initially in its "solved" state.
  //===========================================================================
  {
    for (int x=0;x<3;x++)
      for (int y=0;y<3;y++)
        for (int z=0;z<3;z++)
          cubelet[x][y][z]=new RCCubelet();
  }

  public int getColor(int xPos, int yPos, int zPos, int face)
  //===========================================================================
  // Can be used to query the color of one face of one cubelet.
  // xPos, yPos, zPos:  the coordinates of the cubelet 
  // face:              the face of that cubelet
  // return value:      the color
  //===========================================================================
  {
    return cubelet[xPos][yPos][zPos].getColor(face);
  }

  public void rotate(int axis, int direction, int slice, boolean wholeCube)
  //===========================================================================
  // Rotates one slice of the cube or the whole cube.
  // axis:        the axis around which to rotate
  // direction:   the direction in which to rotate
  // slice:       the depth of the slice to rotate
  // wholeCube:   true -> the whole cube is to be rotated. ignore "slice"
  //===========================================================================
  {
    // saves one cubelet when we do circular swaps
    RCCubelet buffer;

    int[][] m=moves[axis][slice];

    if (wholeCube)
    {
      // rotate the whole cube? then rotate each slice, then quit
      for (int i=0;i<3;i++)
        rotate(axis,direction,i,false);
      return;
    }

    if (direction==1)
    {
      // move corner cubelets
      buffer=cubelet[m[0][0]][m[0][1]][m[0][2]];
      cubelet[m[0][0]][m[0][1]][m[0][2]]=cubelet[m[1][0]][m[1][1]][m[1][2]];
      cubelet[m[1][0]][m[1][1]][m[1][2]]=cubelet[m[2][0]][m[2][1]][m[2][2]];
      cubelet[m[2][0]][m[2][1]][m[2][2]]=cubelet[m[3][0]][m[3][1]][m[3][2]];
      cubelet[m[3][0]][m[3][1]][m[3][2]]=buffer;

      // move edge cubelets
      buffer=cubelet[m[4][0]][m[4][1]][m[4][2]];
      cubelet[m[4][0]][m[4][1]][m[4][2]]=cubelet[m[5][0]][m[5][1]][m[5][2]];
      cubelet[m[5][0]][m[5][1]][m[5][2]]=cubelet[m[6][0]][m[6][1]][m[6][2]];
      cubelet[m[6][0]][m[6][1]][m[6][2]]=cubelet[m[7][0]][m[7][1]][m[7][2]];
      cubelet[m[7][0]][m[7][1]][m[7][2]]=buffer;
    }
    else
    {
      // move corner cubelets
      buffer=cubelet[m[3][0]][m[3][1]][m[3][2]];
      cubelet[m[3][0]][m[3][1]][m[3][2]]=cubelet[m[2][0]][m[2][1]][m[2][2]];
      cubelet[m[2][0]][m[2][1]][m[2][2]]=cubelet[m[1][0]][m[1][1]][m[1][2]];
      cubelet[m[1][0]][m[1][1]][m[1][2]]=cubelet[m[0][0]][m[0][1]][m[0][2]];
      cubelet[m[0][0]][m[0][1]][m[0][2]]=buffer;

      // move edge cubelets
      buffer=cubelet[m[7][0]][m[7][1]][m[7][2]];
      cubelet[m[7][0]][m[7][1]][m[7][2]]=cubelet[m[6][0]][m[6][1]][m[6][2]];
      cubelet[m[6][0]][m[6][1]][m[6][2]]=cubelet[m[5][0]][m[5][1]][m[5][2]];
      cubelet[m[5][0]][m[5][1]][m[5][2]]=cubelet[m[4][0]][m[4][1]][m[4][2]];
      cubelet[m[4][0]][m[4][1]][m[4][2]]=buffer;
    }

    // rotate the cubelets that have been moved
    for (int i=0;i<8;i++)
      cubelet[m[i][0]][m[i][1]][m[i][2]].rotate(axis,direction);

    // P.S.: I know, the comments here are a little sparse. I guess you'll
    //       just have to trust me. :-)
  }

  public void scramble(int moves)
  //===========================================================================
  // Brings the cube to disorder. This is done by performing a large number of
  // random moves, because not all of the cube's possible permutations can be
  // solved. 
  // moves:   how many moves 
  //===========================================================================
  {
    int axis;
    int direction;
    int slice;

    for (int i=0;i<moves;i++)
    {
      axis=(int)(Math.random()*3);
      direction=(Math.random()<0.5) ? 1 : -1;
      slice=(int)(Math.random()*3);
      rotate(axis,direction,slice,false);
    }
  }

  public boolean isSolved()
  //===========================================================================
  // Can be used to query whether the cube is in its "solved" state. This is 
  // done by comparing each of the cubelets' faces that form a face of the 
  // cube with exactly one of them. There must be no differences.
  // return value:  true if solved 
  //===========================================================================
  {
    int x,y,z;
    
    // check faces FACE_XV and FACE_XH
    for (y=0;y<3;y++)
      for (z=0;z<3;z++)
        if (getColor(2,y,z,RCCubelet.FACE_XV)!= 
            getColor(2,0,0,RCCubelet.FACE_XV) ||
            getColor(0,y,z,RCCubelet.FACE_XH)!=
            getColor(0,0,0,RCCubelet.FACE_XH))
          return false;

    // check faces FACE_YV and FACE_YH
    for (x=0;x<3;x++)
      for (z=0;z<3;z++)
        if (getColor(x,2,z,RCCubelet.FACE_YV)!=
            getColor(0,2,0,RCCubelet.FACE_YV) ||
            getColor(x,0,z,RCCubelet.FACE_YH)!=
            getColor(0,0,0,RCCubelet.FACE_YH))
          return false;

    // check faces FACE_YV and FACE_YH
    for (x=0;x<3;x++)
      for (y=0;y<3;y++)
        if (getColor(x,y,2,RCCubelet.FACE_ZV)!=
            getColor(0,0,2,RCCubelet.FACE_ZV) ||
            getColor(x,y,0,RCCubelet.FACE_ZH)!=
            getColor(0,0,0,RCCubelet.FACE_ZH))
          return false;

    return true;
  }
}

class RCDisplayEntry
//=============================================================================
// The RCDisplayEntry describes how to draw one face of one cubelet on the 
// screen. This class works like a C-struct.
//=============================================================================
{
  // which cubelet is it?
  public int xSource,ySource,zSource;
  // and which face on that cubelet?
  public int faceSource;

  // where on the screen does it belong?
  public int xOffset,yOffset;
  // and how does it look there?
  public int shape;

  public RCDisplayEntry(int theXSource, int theYSource, int theZSource,
      int theFaceSource, int theXOffset, int theYOffset, int theShape)
  //===========================================================================
  // Constructor, copies the given values.
  //===========================================================================
  {
    xSource=theXSource;
    ySource=theYSource;
    zSource=theZSource;
    faceSource=theFaceSource;
    xOffset=theXOffset;
    yOffset=theYOffset;
    shape=theShape;
  }
}

class RCSurfacePoint
//=============================================================================
// The RCSurfacePoint is used to describe one point on the surface of the cube,
// i.e. one face of one cubelet. Instances can be created form a (x,y) pair of
// screen coordinates, the class knows how to transform them.
// 
// The class ignores the "mirrors" of the hidden faces. These are only drawn
// and can't be used to manipulate the cube.
//=============================================================================
{
  // on which cubelet lies the point?
  public int cubeX;
  public int cubeY;
  public int cubeZ;
  // and on which face of that cubelet?
  public int face;
  
  public RCSurfacePoint(int xPos, int yPos, int xOffset, int yOffset)
  //===========================================================================
  // Constructor, finds out on which face of the cube the point is. Does so by
  // trying each face.
  // xPos, yPos:        screen coordinates
  // xOffset, yOffset:  offset, used when the background image does not start
  //                    at (0,0)
  //===========================================================================
  {
    transform(xPos,yPos,xOffset,yOffset,RCCubelet.FACE_XV);
    if (!isOnCube())
      transform(xPos,yPos,xOffset,yOffset,RCCubelet.FACE_YV);
    if (!isOnCube())
      transform(xPos,yPos,xOffset,yOffset,RCCubelet.FACE_ZV);
  }

  public RCSurfacePoint(int xPos, int yPos, int xOffset, int yOffset,
      int theFace)
  //===========================================================================
  // Constructor, we specify on which face of the cube the point is.
  // xPos, yPos:        screen coordinates
  // xOffset, yOffset:  background image offset 
  // face:              the point is on this face
  //===========================================================================
  {
    transform(xPos,yPos,xOffset,yOffset,theFace);
  }

  public boolean isOnCube()
  //===========================================================================
  // Can be used to query whether the object describes an existing surface 
  // point.
  // return value:    yep!
  //===========================================================================
  {
    return (cubeX>=0 && cubeY>=0 && cubeZ>=0 && 
            cubeX<=2 && cubeY<=2 && cubeZ<=2);
  }

  protected void transform(int xPos, int yPos, int xOffset, int yOffset,
      int theFace)
  //===========================================================================
  // Transforms screen coordinates to a surface point, we specify on which 
  // face of the cube the point is.
  // xPos, yPos:        screen coordinates
  // xOffset, yOffset:  background image offset 
  // face:              the point is on this face
  //===========================================================================
  {
    double x,y;

    switch (theFace)
    {
      case RCCubelet.FACE_XV:
        x=xPos-237-xOffset;
        y=yPos-182-yOffset;
        cubeX=2;
        cubeY=(int)Math.floor(-x/64-y/32);
        cubeZ=(int)Math.floor(-x/28);
        break;
      case RCCubelet.FACE_YV:
        x=xPos-153-xOffset;
        y=yPos-45-yOffset;
        cubeX=(int)Math.floor(x/56+y/28);
        cubeY=2;
        cubeZ=(int)Math.floor(-x/56+y/28);
        break;
      case RCCubelet.FACE_ZV:
        x=xPos-70-xOffset;
        y=yPos-182-yOffset;
        cubeX=(int)Math.floor(x/28);
        cubeY=(int)Math.floor(x/64-y/32);
        cubeZ=2;
        break;
    }
    face=theFace;
  }
}

public class RubiksCubeApplet extends java.applet.Applet
//=============================================================================
// The RubiksCubeApplet class implements a simulation of Rubik's Cube.
//=============================================================================
{
  // names for the shapes (the different looks cubelet faces can have)
  final static int SHAPE_XF=0;  // shape is on face FACE_X?, fully visible
  final static int SHAPE_XP=1;  // shape is on face FACE_X?, partialy visible
  final static int SHAPE_YF=2;  // and so on
  final static int SHAPE_YP=3;
  final static int SHAPE_ZF=4;
  final static int SHAPE_ZP=5;

  // can be used to translate the graphics within the applet
  final static int CUBEXOFFSET=30;
  final static int CUBEYOFFSET=0;

  // describes where and how each face gets drawn
  // 6 cube faces, each with 3*3 cubelet faces -> 52 visible cubelet faces
  final static RCDisplayEntry[] displayTable=new RCDisplayEntry[54];
  static
  //===========================================================================
  // This unnamed static function initializes the display table. Don't ask me
  // to explain the computations. It was a dirty job, but someone had to do
  // it...
  //===========================================================================
  {
    int x,y,z;
    int i=0;

    for (y=0;y<3;y++)
      for (z=0;z<3;z++)
      {
        displayTable[i++]=new RCDisplayEntry(2,y,z,RCCubelet.FACE_XV,
            211 - 28*z, 
            153 - 32*y + 14*z, 
            SHAPE_XF);
        displayTable[i++]=new RCDisplayEntry(0,y,z,RCCubelet.FACE_XH,
            58 - 28*z, 
            67 - 32*y + 14*z,
            (y==0 && z==0) ? SHAPE_XP : SHAPE_XF);
      }
    for (x=0;x<3;x++)
      for (z=0;z<3;z++)
      {
        displayTable[i++]=new RCDisplayEntry(x,2,z,RCCubelet.FACE_YV,
            129 + 28*x - 28*z,
            46 + 14*x + 14*z,
            SHAPE_YF);
        displayTable[i++]=new RCDisplayEntry(x,0,z,RCCubelet.FACE_YH,
            129 + 28*x - 28*z,
            210 + 14*x + 14*z,
            (x==0 && z==0) ? SHAPE_YP : SHAPE_YF);
      }
    for (x=0;x<3;x++)
      for (y=0;y<3;y++)
      {
        displayTable[i++]=new RCDisplayEntry(x,y,2,RCCubelet.FACE_ZV,
            71 + 28*x,
            153 - 32*y + 14*x,
            SHAPE_ZF);
        displayTable[i++]=new RCDisplayEntry(x,y,0,RCCubelet.FACE_ZH,
            224 + 28*x,
            67 - 32*y + 14*x,
            (x==0 && y==0) ? SHAPE_ZP : SHAPE_ZF);
      }
  }

  // the background image
  protected static Image background;
  // images of the shapes (6 shapes in 6 colors)
  protected static Image[][] shape;

  // audio clips
  protected static AudioClip moveSound;
  protected static AudioClip badSound;

  // the cube itself
  protected RCCube cube=new RCCube();
  // where did the user start dragging with the mouse?
  protected RCSurfacePoint dragStart;
  // did [s]he press the Ctrl key then?
  protected boolean dragCtrlKey;
  // do we count the number of moves?
  protected boolean countMoves=false;

  // the components
  protected Button scramble;
  protected Button giveUp;
  protected TextField moves;
  protected Checkbox sound;

  public void init()
  {
    Panel p,b,o;
    Image shapes;
    int color;
    int shapeNo;
    int colorNo;
    CropImageFilter cropFilter;    
    MediaTracker tracker;

    // create a RCSurfacePoint object - makes sure the class has been loaded
    // when the user starts playing
    new RCSurfacePoint(0,0,0,0);

    // we want something on the bottom
    setLayout(new BorderLayout());
    add("South",p=new Panel());
    p.setLayout(new BorderLayout());

    // on the left side: 2 buttons, 1 checkbox
    p.add("West",b=new Panel());
    b.add(scramble=new Button("Scramble"));
    b.add(giveUp=new Button("Give up"));
    b.add(sound=new Checkbox("Sound"));
    sound.setState(true);

    // on the right side: label and text field
    p.add("East",o=new Panel());
    o.add(new Label("Moves:"));
    o.add(moves=new TextField(5));
    // text field is read only
    moves.setEditable(false);

    // have the images been loaded by another instance?
    if (background==null)
    {
      showStatus("Loading images, please wait...");
      tracker=new MediaTracker(this);
      background=getImage(getCodeBase(),"rc_back.gif");
      tracker.addImage(background,0);
      shapes=getImage(getCodeBase(),"rc_shapes.gif");
      shape=new Image[6][6];
      for (colorNo=0;colorNo<6;colorNo++)
        for (shapeNo=0;shapeNo<6;shapeNo++)
        {
          // for each shape/color combination: crop a small image out of
          // the image with all shapes. avoids loading 54 GIFs thru the net.
          cropFilter=new CropImageFilter(colorNo*50,shapeNo*42,50,42);
          shape[colorNo][shapeNo]=createImage(
              new FilteredImageSource(shapes.getSource(),cropFilter));
          tracker.addImage(shape[colorNo][shapeNo],0);
        }
      // wait for all images
      moveSound=getAudioClip(getCodeBase(),"rc_move.au");
      badSound=getAudioClip(getCodeBase(),"rc_bad.au");
      try {
        tracker.waitForAll();
      } catch (InterruptedException e) {};
    }
  }

  public String getAppletInfo()
  //===========================================================================
  // Gets called when the user selects Applet|Info in appletviewer.
  // return value:  author, verison and copyright info
  //===========================================================================
  {
    return 
      "RubiksCubeApplet\n"+
      "Version 1.2 -- June 1 1997\n\n"+
      "Copyright 1995, 1996, 1997 Michael Schubart\n"+
      "(schubart@best.com)\n"+
      "http://www.best.com/~schubart/";
  }

  public String[][] getParameterInfo()
  //===========================================================================
  // Gets called when the user selects Applet|Info in appletviewer.
  // return value:  what parameters does the applet understand?
  //===========================================================================
  {
    String[][] pinfo=
    {
      {"","No parameters.",""},
    };

    return pinfo;
  }

  public void paint(Graphics g) 
  //===========================================================================
  // Gets called when the applet needs to be redrawn.
  //===========================================================================
  {
    // workaround for bug in some versions of Java (like 1.0.2 on Win32)
    g=getGraphics();

    // first the background...
    g.drawImage(background,CUBEXOFFSET,CUBEYOFFSET,this);

    // ...then the cubelet faces 
    for (int faceNo=0;faceNo<displayTable.length;faceNo++)
      drawFace(g,faceNo);
  }
  
  public void drawFace(Graphics g, int faceNo)
  //===========================================================================
  // Draws one face of one cubelet.
  // faceNo:  the number of the display table entry that describes which 
  //          cubelet face gets drawn where
  //===========================================================================
  {
    // get the shape
    int shapeNo=displayTable[faceNo].shape;

    // get the color
    int colorNo=cube.getColor(
        displayTable[faceNo].xSource,
        displayTable[faceNo].ySource,
        displayTable[faceNo].zSource,
        displayTable[faceNo].faceSource);

    // then draw it
    g.drawImage(
        shape[colorNo][shapeNo],
        displayTable[faceNo].xOffset+CUBEXOFFSET,
        displayTable[faceNo].yOffset+CUBEYOFFSET,
        this);
  }

  public boolean mouseDown(Event event, int x, int y)
  //===========================================================================
  // Gets called when the user clicks with the mouse. We start observing what 
  // the mouse does.
  //===========================================================================
  {
    // are we for some reason already observing the mouse? 
    if (dragStart!=null)
      // then ignore the click
      return true;

    // where did the user click?
    dragStart=new RCSurfacePoint(x,y,CUBEXOFFSET,CUBEYOFFSET);
    // was the Ctrl key pressed?
    dragCtrlKey=(event.modifiers & java.awt.Event.CTRL_MASK)!=0;
    
    // is it a point on the cube?
    if (!dragStart.isOnCube())
    {
      // no -> forget that point, don't observe the mouse
      dragStart=null;
      if (sound.getState())
        badSound.play();
    }
    return true;
  }

  public boolean mouseUp(Event event, int x, int y)
  //===========================================================================
  // Gets called when the user releases the mouse button. We compute a vector 
  // from the 2 points where the mouse button was clicked and released. If it's
  // a legal command, we twist the cube accordingly.
  //===========================================================================
  {
    // are we observing the mouse?
    if (dragStart==null)
      // no -> ignore the event
      return true;

    // what colors are displayed where? 
    int[] colorCache=new int[displayTable.length];
    RCSurfacePoint dragStop=new RCSurfacePoint(
          x,y,CUBEXOFFSET,CUBEYOFFSET,dragStart.face);
    
    // how are the 2 points relative to each other?
    int deltaX=mysign(dragStop.cubeX-dragStart.cubeX);
    int deltaY=mysign(dragStop.cubeY-dragStart.cubeY);
    int deltaZ=mysign(dragStop.cubeZ-dragStart.cubeZ);

    // did we twist the cube?
    boolean rotation=false;
    Graphics g;

    // get all the old color values
    for (int faceNo=0;faceNo<displayTable.length;faceNo++)
      colorCache[faceNo]=cube.getColor(
          displayTable[faceNo].xSource,
          displayTable[faceNo].ySource,
          displayTable[faceNo].zSource,
          displayTable[faceNo].faceSource);

    // twist the cube according to the 2 points 
    switch (dragStart.face)
    {
      case RCCubelet.FACE_XV:
        if (deltaY==0 && deltaZ!=0)
        {
          cube.rotate(RCCubelet.AXIS_Y,-deltaZ,dragStart.cubeY,dragCtrlKey);
          rotation=true;
        }
        if (deltaY!=0 && deltaZ==0)
        {
          cube.rotate(RCCubelet.AXIS_Z,deltaY,dragStart.cubeZ,dragCtrlKey);
          rotation=true;
        }
        break;
      case RCCubelet.FACE_YV:
        if (deltaX==0 && deltaZ!=0)
        {
          cube.rotate(RCCubelet.AXIS_X,deltaZ,dragStart.cubeX,dragCtrlKey);
          rotation=true;
        }
        if (deltaX!=0 && deltaZ==0)
        {
          cube.rotate(RCCubelet.AXIS_Z,-deltaX,dragStart.cubeZ,dragCtrlKey);
          rotation=true;
        }
        break;
      case RCCubelet.FACE_ZV:
        if (deltaX==0 && deltaY!=0)
        {
          cube.rotate(RCCubelet.AXIS_X,-deltaY,dragStart.cubeX,dragCtrlKey);
          rotation=true;
        }
        if (deltaX!=0 && deltaY==0)
        {
          cube.rotate(RCCubelet.AXIS_Y,deltaX,dragStart.cubeY,dragCtrlKey);
          rotation=true;
        }
        break;
    }

    // stop observing the mouse
    dragStart=null;

    // did we twist it?
    if (rotation)
    {
      // do we currently count the moves and was it a real change in the
      // cube's state?
      if (countMoves && !dragCtrlKey)
      {
        // increase the number of moves displayed by 1
        moves.setText(String.valueOf(Integer.parseInt(moves.getText())+1));
        // are we there yet?
        if (cube.isSolved())
        {
          // stop counting
          countMoves=false;
          showStatus("You win!");

          // something wonderful happens here. however, I don't show
          // the source code... :-( solve the cube and see it!

	  // ...
          // ...
          // ...

        }
      }

      // make some noise
      if (sound.getState() && !dragCtrlKey)
        moveSound.play();

      g=getGraphics();
      // draw only those faces that have a different color now
      for (int faceNo=0;faceNo<displayTable.length;faceNo++)
        if (colorCache[faceNo]!=cube.getColor(
            displayTable[faceNo].xSource,
            displayTable[faceNo].ySource,
            displayTable[faceNo].zSource,
            displayTable[faceNo].faceSource))
          drawFace(g,faceNo);
    }
    else
      if (sound.getState())
        badSound.play();
    return true;
  }

  protected int mysign(int val)
  //===========================================================================
  // Convenience function. 
  // return value:   1 if val > 0 
  //                 0 if val = 0
  //                -1 if val < 0
  //===========================================================================
  {
    if (val>0)
      return 1;
    else if (val==0)
      return 0;
    else
      return -1;
  }

  public boolean action(Event event, Object what)
  //===========================================================================
  // Gets called when the user pressed one of the buttons.
  //===========================================================================
  {
    // was it the "Scramble" button?
    if (event.target==scramble)
    {
      // start counting moves
      countMoves=true;

      // initialize moves counter
      moves.setText("0");

      // start with a clean cube, forget the old one, let the garbage 
      // collection take care of it
      cube=new RCCube();

      // scamble it
      showStatus("Scramble, scramble...");
      cube.scramble(500);

      // see what you've done!
      repaint();
      return true;
    }
    // was it the "Give Up" button?
    if (event.target==giveUp)
    {
      // stop counting moves
      countMoves=false;
      // clear counter
      moves.setText("");
      // create a clean cube, toss the old one
      cube=new RCCube();
      // show it
      repaint();
      return true;
    }
    return false;
  }
}

// That's it! Thank you, good night.
<!--'"</title></head>-->

<script type="text/javascript">
//OwnerIQ
var __oiq_pct = 50;
if( __oiq_pct>=100 || Math.floor(Math.random()*100/(100-__oiq_pct)) > 0 ) {
var _oiqq = _oiqq || [];
_oiqq.push(['oiq_addPageBrand','Lycos']);
_oiqq.push(['oiq_addPageCat','Internet > Websites']);
_oiqq.push(['oiq_addPageLifecycle','Intend']);
_oiqq.push(['oiq_doTag']);
(function() {
var oiq = document.createElement('script'); oiq.type = 'text/javascript'; oiq.async = true;
oiq.src = document.location.protocol + '//px.owneriq.net/stas/s/lycosn.js';
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_gaq.push(['_setDomainName','tripod.com']);
_gaq.push(['_setCustomVar',1,'member_name','kwanjai',3]);
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ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
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function getReferrer() {
var all= this.document.cookie;
if (all== '') return false;
var cookie_name = 'REFERRER=';
var start = all.lastIndexOf(cookie_name);
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q = extractQuery(rfr, '', 'q=');
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function extractQuery(full, site, q_param) {
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if (start == -1) return false;
start = full.lastIndexOf(q_param);
if (start == -1) return false;
start += q_param.length;
var end = full.indexOf('&', start);
if (end == -1) end = full.length;
return unescape(full.substring(start, end)).split(" ").join("+");
}
function generateHref(atag, template){
atag.href=template.replace('_MYURL_', window.location.href.replace('http://', '')).replace('_MYTITLE_','Check%20out%20this%20Tripod%20Member%20site!'); 
}
var lycos_ad = Array();
var lycos_onload_timer;
var cm_role = "live";
var cm_host = "tripod.lycos.com";
var cm_taxid = "/memberembedded";
var tripod_member_name = "kwanjai";
var tripod_member_page = "kwanjai/cubic/RubiksCubeApplet.java";
var tripod_ratings_hash = "1713281740:3fc9cf401edd92541fcdd4dc8a6e55a2";

var lycos_ad_category = {"dmoz":"arts\/animation","ontarget":"&CAT=family%20and%20lifestyles&L2CAT=hobbies","find_what":"advertising on the web"};

var lycos_ad_remote_addr = "209.202.244.9";
var lycos_ad_www_server = "www.tripod.lycos.com";
var lycos_ad_track_small = "";
var lycos_ad_track_served = "";
var lycos_search_query = getQuery();
</script>

<script type="text/javascript" src="https://scripts.lycos.com/catman/init.js"></script>

<script type='text/javascript'>
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   gads.async = true;
   gads.type = 'text/javascript';
   var useSSL = 'https:' == document.location.protocol;
   gads.src = (useSSL ? 'https:' : 'http:') +
     '//www.googletagservices.com/tag/js/gpt.js';
   var node = document.getElementsByTagName('script')[0];
   node.parentNode.insertBefore(gads, node);
 })();
</script>

<script type='text/javascript'>
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   googletag.defineSlot('/95963596/TRI_300X250_dfp', [300, 250], 'div-gpt-ad-1450204159126-0').addService(googletag.pubads());
   googletag.defineSlot('/95963596/TRI_above_728x90_dfp', [728, 90], 'div-gpt-ad-1450204159126-1').addService(googletag.pubads());
   googletag.defineSlot('/95963596/TRI_below_728x90_dfp', [728, 90], 'div-gpt-ad-1450204159126-2').addService(googletag.pubads());
   googletag.pubads().enableSingleRequest();
   googletag.enableServices();
 });
</script>


<script type="text/javascript"> 
(function(isV)
{
    if( !isV )
    {
        return;
    }
    var adMgr = new AdManager();
    var lycos_prod_set = adMgr.chooseProductSet();
    var slots = ["leaderboard", "leaderboard2", "toolbar_image", "toolbar_text", "smallbox", "top_promo", "footer2", "slider"];
    var adCat = this.lycos_ad_category;
    adMgr.setForcedParam('page', (adCat && adCat.dmoz) ? adCat.dmoz : 'member');
    if (this.lycos_search_query)
    {
        adMgr.setForcedParam("keyword", this.lycos_search_query);
    } 
    else if(adCat && adCat.find_what)
    {
        adMgr.setForcedParam('keyword', adCat.find_what);
    }
    
    for (var s in slots)
    {
        var slot = slots[s];
        if (adMgr.isSlotAvailable(slot))
        {
            this.lycos_ad[slot] = adMgr.getSlot(slot);
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    }

    adMgr.renderHeader();
    adMgr.renderFooter();
}((function() {

var w = 0, h = 0, minimumThreshold = 300;

if (top == self)
{
    return true;
}
if (typeof(window.innerWidth) == 'number' )
{
    w = window.innerWidth;
    h = window.innerHeight;
}
else if (document.documentElement && (document.documentElement.clientWidth || document.documentElement.clientHeight))
{
    w = document.documentElement.clientWidth;
    h = document.documentElement.clientHeight;
}
else if (document.body && (document.body.clientWidth || document.body.clientHeight))
{
    w = document.body.clientWidth;
    h = document.body.clientHeight;
}
return ((w > minimumThreshold) && (h > minimumThreshold));
}())));




window.onload = function()
{
    var f = document.getElementById("FooterAd");
    var b = document.getElementsByTagName("body")[0];
    b.appendChild(f);
    f.style.display = "block";
    document.getElementById('lycosFooterAdiFrame').src = '/adm/ad/footerAd.iframe.html';
    


    
    // DOM Inj Ad
    (function(isTrellix)
    {
        var e = document.createElement('iframe');
        e.style.border = '0';
        e.style.margin = 0;
        e.style.display = 'block';
        e.style.cssFloat = 'right';
        e.style.height = '254px';
        e.style.overflow = 'hidden';
        e.style.padding = 0;
        e.style.width = '300px';


        var isBlokedByDomain = function( href )
        {
            var blockedDomains = [
                "ananyaporn13000.tripod.com",
                "xxxpornxxx.tripod.com"
            ];
            var flag = false;
            
            for( var i=0; i<blockedDomains.length; i++ )
            {
                if( href.search( blockedDomains[ i ] ) >= 0 )
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            return flag;
        }

        var getMetaContent = function( metaName )
        {
            var metas = document.getElementsByTagName('meta');
            for (i=0; i<metas.length; i++)
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                    return metas[i].getAttribute("content"); 
                } 
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            return false;
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        var getCommentNodes = function(regexPattern)
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            var preferredNodesList = ['a', 'c', 'b'];
        
            (function getNodesThatHaveComments(n, pattern)
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            for (var i in preferredNodesList)
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                break;
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        var propertyName = getMetaContent("property") || false;
        if( isTrellix && (properNode) )
        {
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            properNode.insertBefore(e, properNode.firstChild);
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        {
            e.src = '/adm/ad/injectAd.iframe.html';
            e.style.cssFloat = 'none';
            var cdiv = document.createElement('div');
            cdiv.style = "width:300px;margin:10px auto;";
            cdiv.appendChild( e );
            b.insertBefore(cdiv, b.lastChild);
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        else if( !isBlokedByDomain( location.href ) )
        {
            var injF = document.createElement('iframe');
            injF.style.border = '0';
            injF.style.margin = 0;
            injF.style.display = 'block';
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            injF.style.height = '254px';
            injF.style.overflow = 'hidden';
            injF.style.padding = 0;
            injF.style.width = '300px';
            injF.src = '/adm/ad/injectAd.iframe.html';

            if( b && ( !isTrellix || ( typeof isTrellix == "undefined" ) ) ) // All other tripod props
            {
                var cdiv = document.createElement('div');
                cdiv.style = "width:300px;margin:10px auto;";
                cdiv.appendChild( injF );
                b.insertBefore(cdiv, b.lastChild);
            } 
        }
  }( document.isTrellix ));
}

</script>

<div id="tb_container" style="background:#DFDCCF; border-bottom:1px solid #393939; position:relative; z-index:999999999!important">
<!--form name="search" onSubmit="return searchit()" id='header_search' >
<input type="text" placeholder="Search" size=30 name="search2" value="">
<input type="button" value="Go!" onClick="searchit()">
</form>
<style>
form#header_search {
    width: 916px;
    margin: 0 auto 8px;
    position: relative;
}


form#header_search input {
    height: 40px;
    font-size: 14px;
    line-height: 40px;
    padding: 0 8px;
    box-sizing: border-box;
    background: #F4F2E9;
    border: 1px solid #BBB8B8;
    transition: background-color 300ms ease-out,
                color 300ms ease;
}

form#header_search input[type="text"] {
    width: 100%;
}
form#header_search input[type="text"]:focus {
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    background-color: #fff;
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}



form#header_search input[type="button"] {
    position: absolute;
    top: 1px;
    right: 1px;
    opacity: 1;
    background: #DFDCCF;
    color: #463734;
    width: 125px;
    cursor: pointer;
    height: 38px;
    border: none;
}
form#header_search input[type="text"]:focus ~ input[type='button']:hover,
form#header_search input[type='button']:hover {
    background-color: #A5CE56;
    color: #fff;
}
form#header_search input[type="text"]:focus ~ input[type='button'] {
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    color: #fff;
}

</style>

<script>
function searchit(){
    
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       search_env = 'http://search51.lycos.com/a/';
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var search_term = encodeURIComponent(document.search.search2.value)
var search_url = search_env+search_term;
window.open(search_url);

return false
}
</script-->
<style>
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</style>
<div id="tb_ad" class="adCenterClass" style="display:block!important; overflow:hidden; width:916px;">

<div id="ad_container" style="display:block!important; float:left; width:728px ">
<script type="text/javascript">
if (typeof lycos_ad !== "undefined" && "leaderboard" in lycos_ad) {
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}
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</div>
</div>
</div>
<script type="text/javascript">
if (typeof lycos_ad !== "undefined" && "slider" in lycos_ad) {
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}
</script> <!-- added 7/22 -->
<div id="FooterAd" style="background:#DFDCCF; border-top:1px solid #393939; clear:both; display:none; width:100%!important; position:relative; z-index:999999!important; height:90px!important"> 
<div class="adCenterClass" style="display:block!important; overflow:hidden; width:916px;">
<div id="footerAd_container" style="display:block!important; float:left; width:728px">
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