Magic Cube

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

// Copyright 2020 Leszek Koltunski                                                               //

//                                                                                               //

// 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                          //

// the Free Software Foundation, either version 2 of the License, or                             //

// (at your option) any later version.                                                           //

//                                                                                               //

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

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

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the                                 //

// GNU General Public License for more details.                                                  //

//                                                                                               //

// You should have received a copy of the GNU General Public License                             //

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

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

package org.distorted.objects;

import android.content.res.Resources;

import org.distorted.library.main.DistortedEffects;

import org.distorted.library.main.DistortedTexture;

import org.distorted.library.mesh.MeshSquare;

import org.distorted.library.type.Static4D;

import java.util.Random;

import static org.distorted.effects.scramble.ScrambleEffect.START_AXIS;

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

public class TwistyDino4 extends TwistyDino

{

  private static final int[] mFaceMap = {4,4, 2,2, 2,2, 4,4,

                                         0,0, 2,2, 1,1, 4,4,

                                         0,0, 0,0, 1,1, 1,1 };

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

  TwistyDino4(int size, Static4D quat, DistortedTexture texture,

              MeshSquare mesh, DistortedEffects effects, int[][] moves, Resources res, int scrWidth)

    {

    super(size, quat, texture, mesh, effects, moves, ObjectList.DIN4, res, scrWidth);

    }

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

  int getFaceColor(int cubit, int cubitface, int size)

    {

    switch(cubitface)

      {

      case 0 : return mFaceMap[2*cubit];

      case 1 : return mFaceMap[2*cubit+1];

      default: return NUM_FACES;

      }

    }

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

  boolean shouldResetTextureMaps()

    {

    return true;

    }

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

  public int randomizeNewRow(Random rnd, int oldRotAxis, int oldRow, int newRotAxis)

    {

    return (oldRotAxis==START_AXIS) ? ((newRotAxis==1 || newRotAxis==2) ? 0:2) : (oldRotAxis+newRotAxis==3 ? 2-oldRow : oldRow);

    }

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

// Dino4 is solved if and only if the four groups of three same-colored cubits are each 'together'

// (actually we need to check only 3 first groups - if those are correct, the fourth one also needs

// to be correct).

//

// White group : (X,Y,Z) = 10,11,6

// Red group   : (X,Y,Z) = 0,3,7

// Blue group  : (X,Y,Z) = 2,1,5

// Yellow group: (X,Y,Z) = 8,9,4

//

// A group of 3 cubits is 'together' if and only if they are all rotated with one quat - but we cannot

// forget that the whole Dino can be mirrored! (so then qY = qX*Q2 and qZ = qX*Q8 )

//

// X cubits: 0, 2, 8, 10

// Y cubits: 1, 3, 9, 11

// Z cubits: 4, 5, 6, 7

  public boolean isSolved()

    {

    int redX = CUBITS[0].mQuatIndex;

    int bluX = CUBITS[2].mQuatIndex;

    int yelX = CUBITS[8].mQuatIndex;

    if (CUBITS[3].mQuatIndex == redX && CUBITS[7].mQuatIndex == redX &&

        CUBITS[1].mQuatIndex == bluX && CUBITS[5].mQuatIndex == bluX &&

        CUBITS[9].mQuatIndex == yelX && CUBITS[4].mQuatIndex == yelX  ) return true;

    if (CUBITS[3].mQuatIndex != mulQuat(redX,2)) return false;

    if (CUBITS[7].mQuatIndex != mulQuat(redX,8)) return false;

    if (CUBITS[1].mQuatIndex != mulQuat(bluX,2)) return false;

    if (CUBITS[5].mQuatIndex != mulQuat(bluX,8)) return false;

    if (CUBITS[9].mQuatIndex != mulQuat(yelX,2)) return false;

    if (CUBITS[4].mQuatIndex != mulQuat(yelX,8)) return false;

    return true;

    }

}