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///////////////////////////////////////////////////////////////////////////////////////////////////
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// Copyright 2023 Leszek Koltunski //
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// //
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// This file is part of Magic Cube. //
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// //
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// Magic Cube is proprietary software licensed under an EULA which you should have received //
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// along with the code. If not, check https://distorted.org/magic/License-Magic-Cube.html //
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///////////////////////////////////////////////////////////////////////////////////////////////////
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package org.distorted.solvers;
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import android.content.res.Resources;
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import org.distorted.main.R;
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import org.distorted.objectlib.main.ObjectSignatures;
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import org.distorted.objectlib.main.TwistyObject;
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import org.distorted.objectlib.tablebases.ImplementedTablebasesList;
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import org.distorted.objectlib.tablebases.TablebaseHelpers;
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import org.distorted.objectlib.tablebases.TablebasesAbstract;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public class SolverCube2 extends SolverTablebase
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{
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private static final int ERROR_CORNER_135_MISSING = -1;
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private static final int ERROR_CORNER_134_MISSING = -2;
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private static final int ERROR_CORNER_125_MISSING = -3;
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private static final int ERROR_CORNER_124_MISSING = -4;
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private static final int ERROR_CORNER_035_MISSING = -5;
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private static final int ERROR_CORNER_034_MISSING = -6;
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private static final int ERROR_CORNER_025_MISSING = -7;
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private static final int ERROR_CORNER_024_MISSING = -8;
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private static final int ERROR_CORNERS_CANNOT = -9;
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private static final int ERROR_CORNER_TWISTED = -10;
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TablebasesAbstract mSolver;
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private final int[] mFaceColors;
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////////////////////////////////////////////////////////////////////////////////////////
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private void fillCornerTwists(int[] output, int[][] corners, int[] perm)
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{
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// TODO
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}
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////////////////////////////////////////////////////////////////////////////////////////
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private int cornerIndex(int[][] corners, int i1, int i2, int i3)
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{
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int c1 = mFaceColors[i1];
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int c2 = mFaceColors[i2];
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int c3 = mFaceColors[i3];
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for(int i=0; i<8; i++)
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{
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int[] cor = corners[i];
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if( (cor[0]==c1 && cor[1]==c2 && cor[2]==c3) ||
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(cor[0]==c2 && cor[1]==c3 && cor[2]==c1) ||
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(cor[0]==c3 && cor[1]==c1 && cor[2]==c2) ) return i;
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}
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return -1;
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}
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////////////////////////////////////////////////////////////////////////////////////////
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private int retCornerPermutation(int[] output, int[][] corners)
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{
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for(int i=0; i<8; i++) output[i] = -1;
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output[0] = cornerIndex(corners, 1,2,5);
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output[1] = cornerIndex(corners, 1,4,2);
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output[2] = cornerIndex(corners, 1,5,3);
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output[3] = cornerIndex(corners, 1,3,4);
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output[4] = cornerIndex(corners, 0,5,2);
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output[5] = cornerIndex(corners, 0,2,4);
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output[6] = cornerIndex(corners, 0,3,5);
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output[7] = cornerIndex(corners, 0,4,3);
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if( output[0]==-1 ) { android.util.Log.e("D ", "135"); return ERROR_CORNER_135_MISSING; }
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if( output[1]==-1 ) { android.util.Log.e("D ", "134"); return ERROR_CORNER_134_MISSING; }
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if( output[2]==-1 ) { android.util.Log.e("D ", "125"); return ERROR_CORNER_125_MISSING; }
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if( output[3]==-1 ) { android.util.Log.e("D ", "124"); return ERROR_CORNER_124_MISSING; }
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if( output[4]==-1 ) { android.util.Log.e("D ", "035"); return ERROR_CORNER_035_MISSING; }
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if( output[5]==-1 ) { android.util.Log.e("D ", "034"); return ERROR_CORNER_034_MISSING; }
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if( output[6]==-1 ) { android.util.Log.e("D ", "025"); return ERROR_CORNER_025_MISSING; }
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if( output[7]==-1 ) { android.util.Log.e("D ", "024"); return ERROR_CORNER_024_MISSING; }
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return 0;
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}
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////////////////////////////////////////////////////////////////////////////////////////
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private int findColor(int[][] corners, int c1, int c2)
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{
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for(int i=0; i<8; i++)
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{
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int[] cor = corners[i];
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if( cor[0]==c1 && cor[1]==c2 ) return cor[2];
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if( cor[1]==c1 && cor[2]==c2 ) return cor[0];
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if( cor[2]==c1 && cor[0]==c2 ) return cor[1];
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}
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return -1;
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}
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////////////////////////////////////////////////////////////////////////////////////////
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private int computeFaceColors(int[][] corners)
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{
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mFaceColors[1] = corners[1][0];
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mFaceColors[2] = corners[1][2];
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mFaceColors[4] = corners[1][1];
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mFaceColors[0] = findColor(corners,mFaceColors[2],mFaceColors[4]);
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mFaceColors[3] = findColor(corners,mFaceColors[4],mFaceColors[1]);
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mFaceColors[5] = findColor(corners,mFaceColors[1],mFaceColors[2]);
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for(int i=0; i<6; i++) android.util.Log.e("D", "face "+i+" : "+mFaceColors[i]);
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for(int i=0; i<6; i++)
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{
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int color = mFaceColors[i];
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if( color<0 ) return ERROR_CORNERS_CANNOT;
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for(int j=i+1; j<6; j++)
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if( mFaceColors[j]==color ) return ERROR_CORNERS_CANNOT;
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}
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return 0;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public SolverCube2(Resources res, TwistyObject object)
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{
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super(res,object);
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mFaceColors = new int[6];
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public int tablebaseIndex(TwistyObject object)
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{
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int[][] corners= new int[8][3];
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corners[0][0] = object.getCubitFaceStickerIndex(0,1);
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corners[0][1] = object.getCubitFaceStickerIndex(0,3);
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corners[0][2] = object.getCubitFaceStickerIndex(0,5);
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corners[1][0] = object.getCubitFaceStickerIndex(1,3);
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corners[1][1] = object.getCubitFaceStickerIndex(1,5);
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corners[1][2] = object.getCubitFaceStickerIndex(1,1);
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corners[2][0] = object.getCubitFaceStickerIndex(2,5);
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corners[2][1] = object.getCubitFaceStickerIndex(2,1);
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corners[2][2] = object.getCubitFaceStickerIndex(2,3);
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corners[3][0] = object.getCubitFaceStickerIndex(3,1);
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corners[3][1] = object.getCubitFaceStickerIndex(3,3);
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corners[3][2] = object.getCubitFaceStickerIndex(3,5);
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corners[4][0] = object.getCubitFaceStickerIndex(4,1);
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corners[4][1] = object.getCubitFaceStickerIndex(4,3);
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corners[4][2] = object.getCubitFaceStickerIndex(4,5);
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corners[5][0] = object.getCubitFaceStickerIndex(5,1);
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corners[5][1] = object.getCubitFaceStickerIndex(5,3);
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corners[5][2] = object.getCubitFaceStickerIndex(5,5);
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corners[6][0] = object.getCubitFaceStickerIndex(6,1);
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corners[6][1] = object.getCubitFaceStickerIndex(6,3);
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corners[6][2] = object.getCubitFaceStickerIndex(6,5);
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corners[7][0] = object.getCubitFaceStickerIndex(7,1);
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corners[7][1] = object.getCubitFaceStickerIndex(7,3);
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corners[7][2] = object.getCubitFaceStickerIndex(7,5);
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/*
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for(int i=0; i<8; i++)
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for(int f=0; f<3; f++)
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{
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android.util.Log.e("D", "cubit "+i+" face "+f+" : "+corners[i][f]);
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}
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*/
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int result0 = computeFaceColors(corners);
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if( result0<0 ) return result0;
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int[] corner_perm = new int[8];
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int result1 = retCornerPermutation(corner_perm,corners);
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if( result1<0 ) return result1;
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int[] perm = new int[7];
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perm[0] = corner_perm[0]>1 ? corner_perm[0]-1 : corner_perm[0];
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perm[1] = corner_perm[2]>1 ? corner_perm[2]-1 : corner_perm[2];
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perm[2] = corner_perm[3]>1 ? corner_perm[3]-1 : corner_perm[3];
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perm[3] = corner_perm[4]>1 ? corner_perm[4]-1 : corner_perm[4];
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perm[4] = corner_perm[5]>1 ? corner_perm[5]-1 : corner_perm[5];
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perm[5] = corner_perm[6]>1 ? corner_perm[6]-1 : corner_perm[6];
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perm[6] = corner_perm[7]>1 ? corner_perm[7]-1 : corner_perm[7];
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int perm_num = TablebaseHelpers.computePermutationNum(perm);
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/*
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android.util.Log.e("D", "corner perm num="+perm_num);
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for(int i=0; i<8; i++)
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{
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android.util.Log.e("D", "8perm "+i+" "+corner_perm[i]);
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}
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for(int i=0; i<7; i++)
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{
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android.util.Log.e("D", "7perm "+i+" "+perm[i]);
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}
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*/
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int[] twist = new int[8];
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fillCornerTwists(twist,corners,corner_perm);
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int totalTwist = 0;
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for(int i=0; i<8; i++) totalTwist += twist[i];
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if( ((totalTwist)%3) != 0 ) return ERROR_CORNER_TWISTED;
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int twistNum = twist[0] + 3*(twist[2] + 3*(twist[3] + 3*(twist[4] + 3*(twist[5] + 3*twist[6]))));
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return twistNum + 729*perm_num;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private int getColorIndex4(int face)
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{
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switch(mFaceColors[face])
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{
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case 0: return R.string.color_yellow4;
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case 1: return R.string.color_white4;
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case 2: return R.string.color_green4;
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case 3: return R.string.color_blue4;
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case 4: return R.string.color_red4;
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case 5: return R.string.color_orange4;
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}
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return -1;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private int getColorIndex3(int face)
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{
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switch(mFaceColors[face])
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{
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case 0: return R.string.color_yellow3;
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case 1: return R.string.color_white3;
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case 2: return R.string.color_green3;
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case 3: return R.string.color_blue3;
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case 4: return R.string.color_red3;
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case 5: return R.string.color_orange3;
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}
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return -1;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private String cornerError(Resources res, int face0, int face1, int face2)
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{
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int j0 = getColorIndex3(face0);
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int j1 = getColorIndex3(face1);
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int j2 = getColorIndex4(face2);
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String c0 = res.getString(j0);
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String c1 = res.getString(j1);
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String c2 = res.getString(j2);
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return res.getString(R.string.solver_generic_missing_corner,c0,c1,c2);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public String error(int index, Resources res)
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{
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switch(index)
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{
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case ERROR_CORNER_135_MISSING: return cornerError(res,1,3,5);
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case ERROR_CORNER_134_MISSING: return cornerError(res,1,3,4);
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case ERROR_CORNER_125_MISSING: return cornerError(res,1,2,5);
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case ERROR_CORNER_124_MISSING: return cornerError(res,1,2,4);
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case ERROR_CORNER_035_MISSING: return cornerError(res,0,3,5);
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case ERROR_CORNER_034_MISSING: return cornerError(res,0,3,4);
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case ERROR_CORNER_025_MISSING: return cornerError(res,0,2,5);
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case ERROR_CORNER_024_MISSING: return cornerError(res,0,2,4);
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case ERROR_CORNERS_CANNOT : return res.getString(R.string.solver_generic_corners_cannot);
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case ERROR_CORNER_TWISTED : return res.getString(R.string.solver_generic_corner_twist);
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}
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return null;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public int[][] solution(int index, Resources res)
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{
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if( mSolver==null )
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{
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mSolver = ImplementedTablebasesList.createUnpacked(ObjectSignatures.CUBE_2);
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if( mSolver!=null ) mSolver.createTablebase();
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}
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return mSolver!=null ? mSolver.solution(index,null) : null;
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}
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}
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