Magic Cube

// This file is part of Magic Cube.                                                              //

//                                                                                               //

// Magic Cube is free software: you can redistribute it and/or modify                            //

// it under the terms of the GNU General Public License as published by                          //

// Magic Cube is distributed in the hope that it will be useful,                                 //

// but WITHOUT ANY WARRANTY; without even the implied warranty of                                //

// along with Magic Cube.  If not, see <http://www.gnu.org/licenses/>.                           //

///////////////////////////////////////////////////////////////////////////////////////////////////

package org.distorted.objects;

import android.content.res.Resources;

import android.graphics.Canvas;

import org.distorted.helpers.FactoryCubit;

import org.distorted.library.main.DistortedEffects;

import org.distorted.library.mesh.MeshBase;

import org.distorted.library.mesh.MeshSquare;

import org.distorted.library.type.Static3D;

import org.distorted.main.R;

import java.util.Random;

///////////////////////////////////////////////////////////////////////////////////////////////////

class TwistyCube extends TwistyObject

{

  // the three rotation axis of a RubikCube. Must be normalized.

  static final Static3D[] ROT_AXIS = new Static3D[]

         {

  private static final int[] BASIC_ANGLE = new int[] { 4,4,4 };

  private static final int[] FACE_COLORS = new int[]

         {

           COLOR_YELLOW, COLOR_WHITE,

           COLOR_RED   , COLOR_ORANGE

         };

  // All legal rotation quats of a RubikCube of any size.

  // Here's how to compute this:

  // Example program in C, res/raw/compute_quats.c , is included.

  private static final Static4D[] QUATS = new Static4D[]

         {

         new Static4D(  0.0f,   0.0f,   0.0f,   1.0f),

         };

  private static final double[][] VERTICES = new double[][]

  private static MeshBase[] mMeshes;

///////////////////////////////////////////////////////////////////////////////////////////////////

  TwistyCube(int size, Static4D quat, DistortedTexture texture,

    {

    super(size, size, quat, texture, mesh, effects, moves, ObjectList.CUBE, res, scrWidth);

    }

///////////////////////////////////////////////////////////////////////////////////////////////////

  MeshBase createCubitMesh(int cubit, int numLayers)

    {

      FactoryCubit factory = FactoryCubit.getInstance();

      mMeshes = new MeshBase[ObjectList.CUBE.getNumVariants()];

    int index  = ObjectList.getSizeIndex(ordinal,getNumLayers());

      int extraI, extraV, num;

      float height;

        case 2 : num = 6; extraI = 2; extraV = 2; height = 0.045f; break;

        }

      float[][] bands     = new float[][] { {height,35,0.5f,0.7f,num,extraI,extraV} };

      int[] bandIndexes   = new int[] { 0,0,0,0,0,0};

      float[][] centers   = new float[][] { {0.0f, 0.0f, 0.0f} };

                                                  centers, centerIndexes,

                                                  getNumCubitFaces() );

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

  void createFaceTexture(Canvas canvas, Paint paint, int face, int left, int top)

    {

    float R = 0.10f;

    float S = 0.08f;

    FactorySticker factory = FactorySticker.getInstance();

    factory.drawRoundedPolygon(canvas, paint, left, top, STICKERS[0], S, FACE_COLORS[face], R);

    }

///////////////////////////////////////////////////////////////////////////////////////////////////

  float[][] getCubitPositions(int numLayers)

    {

    int numCubits = numLayers>1 ? 6*numLayers*numLayers - 12*numLayers + 8 : 1;

    float[][] tmp = new float[numCubits][];

    float diff = 0.5f*(numLayers-1);

    int currentPosition = 0;

    for(int x = 0; x<numLayers; x++)

            {

            tmp[currentPosition++] = new float[] {x-diff,y-diff,z-diff};

            }

    return tmp;

///////////////////////////////////////////////////////////////////////////////////////////////////

  Static4D[] getQuats()

    {

    return QUATS;

    }

///////////////////////////////////////////////////////////////////////////////////////////////////

///////////////////////////////////////////////////////////////////////////////////////////////////

  int getNumFaces()

    {

    return FACE_COLORS.length;

    }

///////////////////////////////////////////////////////////////////////////////////////////////////

  float[] getCuts(int numLayers)

    {

    float[] cuts = new float[numLayers-1];

    for(int i=0; i<numLayers-1; i++)

      {

      cuts[i] = (2-numLayers)*0.5f + i;

      }

    }

///////////////////////////////////////////////////////////////////////////////////////////////////

  int getNumStickerTypes(int numLayers)

    {

    return STICKERS.length;

    }

///////////////////////////////////////////////////////////////////////////////////////////////////

    }

///////////////////////////////////////////////////////////////////////////////////////////////////

///////////////////////////////////////////////////////////////////////////////////////////////////

    return CUBITS[cubit].mRotationRow[cubitface/2] == (cubitface%2==0 ? (1<<(size-1)):1) ? cubitface : NUM_FACES;

    }

///////////////////////////////////////////////////////////////////////////////////////////////////

    return getNumLayers();

    }

///////////////////////////////////////////////////////////////////////////////////////////////////

  public Static3D[] getRotationAxis()

    return ROT_AXIS;

    }

  public int[] getBasicAngle()

    {

    return BASIC_ANGLE;

    }

///////////////////////////////////////////////////////////////////////////////////////////////////

  public void randomizeNewScramble(int[][] scramble, Random rnd, int num)

    {

    if( num==0 )

      {

      scramble[num][0] = rnd.nextInt(NUM_AXIS);

      }

      int newVector = rnd.nextInt(NUM_AXIS -1);

      scramble[num][0] = (newVector>=scramble[num-1][0] ? newVector+1 : newVector);

      }

    float rowFloat = rnd.nextFloat();

    int numLayers = getNumLayers();

    for(int row=0; row<numLayers; row++)

      {

      if( rowFloat*numLayers <= row+1 )

        {

        scramble[num][1] = row;

        break;

      }

    switch( rnd.nextInt(4) )

    }

///////////////////////////////////////////////////////////////////////////////////////////////////

      if( thereIsVisibleDifference(CUBITS[i], index) ) return false;

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

// order: Up --> Right --> Front --> Down --> Left --> Back

// Solved 3x3x3 Cube maps to "UUUUUUUUURRRRRRRRRFFFFFFFFFDDDDDDDDDLLLLLLLLLBBBBBBBBB"

//

// s : size of the cube; let index = a*s + b    (i.e. a,b = row,column)

// Right :   index --> 6*s*s - 12*s + 7 - index

// Front :   index --> if b==0  : s*s - 1 - index

  public String retObjectString()

    {

    StringBuilder objectString = new StringBuilder();

    int layers = getNumLayers();

    int cubitIndex, row, col, color,face;

    // 'I' - interior, theoretically can happen

    for(int i=0; i<len; i++)

      row = i/layers;

      cubitIndex = col<layers-1 ? (layers-1)*(layers+4*col) + row : 6*layers*layers - 13*layers + 8 + row;

      color = getCubitFaceColorIndex(cubitIndex,face);

      objectString.append(FACE_NAMES[color]);

    face = RIGHT;

    for(int i=0; i<len; i++)

      cubitIndex = 6*layers*layers - 12*layers +7 - i;

      color = getCubitFaceColorIndex(cubitIndex,face);

      objectString.append(FACE_NAMES[color]);

    face = FRONT;

    for(int i=0; i<len; i++)

      row = i/layers;

      if( col==layers-1 ) cubitIndex = 6*layers*layers - 11*layers + 6 -i;

      else

        if( row==0 ) cubitIndex = layers*layers + layers-1 + 4*(col-1)*(layers-1) + 2*(layers-2) + layers;

        }

      color = getCubitFaceColorIndex(cubitIndex,face);

      objectString.append(FACE_NAMES[color]);

    face = DOWN;

    for(int i=0; i<len; i++)

      row = i/layers;

      cubitIndex = col==0 ? layers-1-row : layers*layers + layers-1 + 4*(col-1)*(layers-1) - row;

      color = getCubitFaceColorIndex(cubitIndex,face);

      objectString.append(FACE_NAMES[color]);

    face = LEFT;

    for(int i=0; i<len; i++)

      row = i/layers;

      cubitIndex = (layers-1-row)*layers + col;

      color = getCubitFaceColorIndex(cubitIndex,face);

      objectString.append(FACE_NAMES[color]);

    face = BACK;

    for(int i=0; i<len; i++)

      row = i/layers;

      if( col==layers-1 ) cubitIndex = layers*(layers-1-row);

      else

        if( row==layers-1 ) cubitIndex = layers*layers + 4*(layers-2-col)*(layers-1);

        }

      color = getCubitFaceColorIndex(cubitIndex,face);

      objectString.append(FACE_NAMES[color]);

    }

}