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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.TBPyraminx;
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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 SolverJing extends SolverTablebase
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{
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private static final int ERROR_CORNER_GYB_MISSING = -1;
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private static final int ERROR_CORNER_GYR_MISSING = -2;
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private static final int ERROR_CORNER_GBR_MISSING = -3;
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private static final int ERROR_CORNER_YBR_MISSING = -4;
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private static final int ERROR_EDGE_RB_MISSING = -5;
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private static final int ERROR_EDGE_RY_MISSING = -6;
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private static final int ERROR_EDGE_RG_MISSING = -7;
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private static final int ERROR_EDGE_YB_MISSING = -8;
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private static final int ERROR_EDGE_GB_MISSING = -9;
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private static final int ERROR_EDGE_GY_MISSING = -10;
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private static final int ERROR_CENTER_G_MISSING = -11;
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private static final int ERROR_CENTER_Y_MISSING = -12;
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private static final int ERROR_CENTER_B_MISSING = -13;
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private static final int ERROR_CENTER_R_MISSING = -14;
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private static final int ERROR_CORNERS_CANNOT = -15;
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private static final int ERROR_EDGE_TWISTED = -16;
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private static final int ERROR_CORNER_TWISTED = -17;
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private static final int ERROR_TWO_EDGES = -18;
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private static final int ERROR_TWO_CENTERS = -19;
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private TablebasesAbstract mSolver;
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private int[] mFaceColors;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public SolverJing(Resources res, TwistyObject object)
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{
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super(res,object);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private boolean pieceEqual3(int[] piece, int c1, int c2, int c3)
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{
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return ( (piece[0]==c1 && piece[1]==c2 && piece[2]==c3) ||
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(piece[0]==c1 && piece[2]==c2 && piece[1]==c3) ||
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(piece[1]==c1 && piece[0]==c2 && piece[2]==c3) ||
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(piece[1]==c1 && piece[2]==c2 && piece[0]==c3) ||
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(piece[2]==c1 && piece[1]==c2 && piece[0]==c3) ||
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(piece[2]==c1 && piece[0]==c2 && piece[1]==c3) );
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private boolean pieceEqual2(int[] piece, int[] colors)
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{
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return ( (piece[0]==colors[0] && piece[1]==colors[1]) ||
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(piece[0]==colors[1] && piece[1]==colors[0]) );
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private int checkAllCornersPresent(int[][] corners)
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{
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boolean ybr = false;
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boolean gbr = false;
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boolean gyr = false;
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boolean gyb = false;
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for(int i=0; i<4; i++)
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{
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if( pieceEqual3(corners[i],0,1,2) ) gyb = true;
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if( pieceEqual3(corners[i],0,1,3) ) gyr = true;
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if( pieceEqual3(corners[i],0,2,3) ) gbr = true;
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if( pieceEqual3(corners[i],1,2,3) ) ybr = true;
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}
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if( !ybr ) return ERROR_CORNER_YBR_MISSING;
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if( !gbr ) return ERROR_CORNER_GBR_MISSING;
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if( !gyr ) return ERROR_CORNER_GYR_MISSING;
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if( !gyb ) return ERROR_CORNER_GYB_MISSING;
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return 0;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private int checkAllEdgesPresent(int[][] edges, int[][] edgeColors)
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{
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boolean[] present = new boolean[6];
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for(int i=0; i<6; i++) present[i] = false;
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for(int i=0; i<6; i++)
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for(int j=0; j<6; j++)
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if (pieceEqual2(edges[i], edgeColors[j]))
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{
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present[j] = true;
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break;
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}
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if( !present[0] ) return ERROR_EDGE_RB_MISSING;
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if( !present[1] ) return ERROR_EDGE_GB_MISSING;
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if( !present[2] ) return ERROR_EDGE_RG_MISSING;
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if( !present[3] ) return ERROR_EDGE_YB_MISSING;
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if( !present[4] ) return ERROR_EDGE_RY_MISSING;
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if( !present[5] ) return ERROR_EDGE_GY_MISSING;
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return 0;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private int checkAllCentersPresent(int[] centers)
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{
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boolean[] present = new boolean[4];
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for(int i=0; i<4; i++) present[i] = false;
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for(int i=0; i<4; i++)
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{
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present[centers[i]]= true;
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}
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if( !present[0] ) return ERROR_CENTER_G_MISSING;
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if( !present[1] ) return ERROR_CENTER_Y_MISSING;
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if( !present[2] ) return ERROR_CENTER_B_MISSING;
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if( !present[3] ) return ERROR_CENTER_R_MISSING;
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return 0;
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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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int[] ret = new int[4];
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for(int i=0; i<4; i++)
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for(int j=0; j<4; j++)
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if( corners[i][0]!=j && corners[i][1]!=j && corners[i][2]!=j ) ret[i]=j;
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return ret;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private int computePieceTwist(int index, int[] corner, int[] faceColor)
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{
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int twist1=0, twist2=0, twist3=0;
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switch(index)
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{
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case 0: if( corner[1]==faceColor[1] ) twist1=1;
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if( corner[2]==faceColor[1] ) twist1=2;
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if( corner[0]==faceColor[2] ) twist2=2;
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if( corner[2]==faceColor[2] ) twist2=1;
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if( corner[0]==faceColor[3] ) twist3=1;
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if( corner[1]==faceColor[3] ) twist3=2;
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break;
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case 1: if( corner[1]==faceColor[0] ) twist1=1;
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if( corner[2]==faceColor[0] ) twist1=2;
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if( corner[0]==faceColor[2] ) twist2=1;
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if( corner[1]==faceColor[2] ) twist2=2;
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if( corner[0]==faceColor[3] ) twist3=2;
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if( corner[2]==faceColor[3] ) twist3=1;
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break;
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case 2: if( corner[1]==faceColor[0] ) twist1=1;
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if( corner[2]==faceColor[0] ) twist1=2;
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if( corner[0]==faceColor[1] ) twist2=2;
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if( corner[2]==faceColor[1] ) twist2=1;
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if( corner[0]==faceColor[3] ) twist3=1;
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if( corner[1]==faceColor[3] ) twist3=2;
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break;
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case 3: if( corner[1]==faceColor[0] ) twist1=1;
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if( corner[2]==faceColor[0] ) twist1=2;
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if( corner[0]==faceColor[1] ) twist2=1;
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if( corner[1]==faceColor[1] ) twist2=2;
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if( corner[0]==faceColor[2] ) twist3=2;
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if( corner[2]==faceColor[2] ) twist3=1;
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break;
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}
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return ( twist1!=twist2 || twist1!=twist3 ) ? ERROR_CORNERS_CANNOT : twist1;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private int locateEdge(int[][] edges, int[] colors)
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{
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for(int i=0; i<6; i++)
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if( edges[i][0]==colors[0] && edges[i][1]==colors[1] ||
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edges[i][0]==colors[1] && edges[i][1]==colors[0] ) return i;
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return -1;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private int edgeTwist(int[] edge, int[] colors)
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{
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return edge[0]==colors[0] ? 0:1;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private int[] computeEdgeQuats(int[][] edges, int[][] edgeColors)
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{
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int[] quats = new int[6];
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for(int i=0; i<6; i++)
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{
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int pos = locateEdge(edges,edgeColors[i]);
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int twist = edgeTwist(edges[pos],edgeColors[i]);
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quats[i] = TBPyraminx.EDGE_QUATS[pos][twist];
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}
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return quats;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// GRB YBR YGB YRG
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private void getCorners(TwistyObject object, int[][] corners)
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{
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for(int i=0; i<4; i++)
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for(int j=0; j<3; j++)
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corners[i][j] = object.getCubitFaceStickerIndex(i,j);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// RB GB RG YB RY GY
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private void getEdges(TwistyObject object, int[][] edges)
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{
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for(int i=0; i<6; i++)
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for(int j=0; j<2; j++)
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edges[i][j] = object.getCubitFaceStickerIndex(i+4,j) -4;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// G Y B R
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private void getCenters(TwistyObject object, int[] centers)
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{
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for(int i=0; i<4; i++)
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centers[i] = object.getCubitFaceStickerIndex(i+10,0) - 8;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private int[][] computeEdgeColors(int[] faceColor)
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{
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// The first pair being (2,3) means 'the first edge's first face is on the tetrahedron
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// face which opposes corner number 2, and its second face on tetra face which opposes
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// corner number 3'
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// Order of those pairs determines edge twist.
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final int[][] edgeColorIndices = new int[][] { {2,3},{1,3},{2,1},{0,3},{2,0},{1,0} };
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int[][] ret = new int[6][2];
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for(int i=0; i<6; i++)
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{
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ret[i][0] = faceColor[edgeColorIndices[i][0]];
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ret[i][1] = faceColor[edgeColorIndices[i][1]];
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}
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return ret;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private int computeCenterTwist(int[] centers, int color1, int color2)
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{
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if( centers[0]==color1 )
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{
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if( centers[1]==color2 ) return 1;
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if( centers[2]==color2 ) return 2;
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if( centers[3]==color2 ) return 0;
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return -1;
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}
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if( centers[1]==color1 )
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{
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if( centers[0]==color2 ) return 1;
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if( centers[2]==color2 ) return 0;
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if( centers[3]==color2 ) return 2;
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return -1;
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}
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if( centers[2]==color1 )
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{
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if( centers[0]==color2 ) return 2;
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if( centers[1]==color2 ) return 0;
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if( centers[3]==color2 ) return 1;
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return -1;
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}
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if( centers[3]==color1 )
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{
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if( centers[0]==color2 ) return 0;
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if( centers[1]==color2 ) return 2;
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if( centers[2]==color2 ) return 1;
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return -1;
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}
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return -2;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private int getFaceOfCenter(int color, int[] centers)
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{
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if( centers[0]==color ) return 0;
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if( centers[1]==color ) return 1;
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if( centers[2]==color ) return 2;
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if( centers[3]==color ) return 3;
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return -1;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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340
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public int tablebaseIndex(TwistyObject object)
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342
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{
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int[][] corners = new int[4][3];
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int[][] edges = new int[6][2];
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int[] centers = new int[4];
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int[] corner_twist= new int[4];
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347
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getCorners(object,corners);
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349
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int result1 = checkAllCornersPresent(corners);
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if( result1<0 ) return result1;
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352
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mFaceColors = computeFaceColors(corners);
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int[][] edgeColors = computeEdgeColors(mFaceColors);
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355
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getEdges(object,edges);
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int result2 = checkAllEdgesPresent(edges,edgeColors);
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if( result2<0 ) return result2;
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359
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getCenters(object,centers);
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int result3 = checkAllCentersPresent(centers);
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if( result3<0 ) return result3;
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363
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364
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for(int i=0; i<4; i++)
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365
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{
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366
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corner_twist[i] = computePieceTwist(i,corners[i],mFaceColors);
|
|
367
|
if( corner_twist[i]<0 ) return ERROR_CORNERS_CANNOT;
|
|
368
|
}
|
|
369
|
|
|
370
|
int[] quats = computeEdgeQuats(edges,edgeColors);
|
|
371
|
int[] permutation = new int[6];
|
|
372
|
TBPyraminx.getEdgePermutation(permutation,quats,0);
|
|
373
|
boolean even = TablebaseHelpers.permutationIsEven(permutation);
|
|
374
|
if( !even ) return ERROR_TWO_EDGES;
|
|
375
|
int[] edge_twist = new int[6];
|
|
376
|
TBPyraminx.getEdgeTwist(edge_twist,quats,0);
|
|
377
|
|
|
378
|
int twist_gr = computeCenterTwist(centers,mFaceColors[1],mFaceColors[2]);
|
|
379
|
int twist_ry = computeCenterTwist(centers,mFaceColors[2],mFaceColors[0]);
|
|
380
|
|
|
381
|
if( (twist_ry-twist_gr+1)%3 != 0 ) return ERROR_TWO_CENTERS;
|
|
382
|
|
|
383
|
int total_twist=0;
|
|
384
|
for(int i=0; i<4; i++) total_twist += corner_twist[i];
|
|
385
|
|
|
386
|
if( (total_twist-twist_gr)%3 !=0 ) return ERROR_CORNER_TWISTED;
|
|
387
|
|
|
388
|
int green_face = getFaceOfCenter(mFaceColors[1],centers);
|
|
389
|
|
|
390
|
int totalEdgeTwist=0;
|
|
391
|
for(int i=0; i<6; i++) totalEdgeTwist += edge_twist[i];
|
|
392
|
if( (totalEdgeTwist%2)!=0 ) return ERROR_EDGE_TWISTED;
|
|
393
|
|
|
394
|
int vertexTwist = corner_twist[0]+ 3*(corner_twist[1]+ 3*(corner_twist[2]+ 3*corner_twist[3]));
|
|
395
|
int edgeTwist = edge_twist[0]+ 2*(edge_twist[1]+ 2*(edge_twist[2]+ 2*(edge_twist[3]+ 2*edge_twist[4])));
|
|
396
|
int perm_num = TablebaseHelpers.computeEvenPermutationNum(permutation);
|
|
397
|
|
|
398
|
return green_face + 4*(vertexTwist + 81*(edgeTwist + 32*perm_num));
|
|
399
|
}
|
|
400
|
|
|
401
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
|
402
|
|
|
403
|
private int getColorIndex3(int color)
|
|
404
|
{
|
|
405
|
switch(color)
|
|
406
|
{
|
|
407
|
case 0: return R.string.color_green3;
|
|
408
|
case 1: return R.string.color_yellow3;
|
|
409
|
case 2: return R.string.color_blue3;
|
|
410
|
case 3: return R.string.color_red3;
|
|
411
|
}
|
|
412
|
|
|
413
|
return -1;
|
|
414
|
}
|
|
415
|
|
|
416
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
|
417
|
|
|
418
|
private int getColorIndex4(int color)
|
|
419
|
{
|
|
420
|
switch(color)
|
|
421
|
{
|
|
422
|
case 0: return R.string.color_green4;
|
|
423
|
case 1: return R.string.color_yellow4;
|
|
424
|
case 2: return R.string.color_blue4;
|
|
425
|
case 3: return R.string.color_red4;
|
|
426
|
}
|
|
427
|
|
|
428
|
return -1;
|
|
429
|
}
|
|
430
|
|
|
431
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
|
432
|
|
|
433
|
private int getFaceIndex3(int face)
|
|
434
|
{
|
|
435
|
switch(mFaceColors[face])
|
|
436
|
{
|
|
437
|
case 0: return R.string.color_green3;
|
|
438
|
case 1: return R.string.color_yellow3;
|
|
439
|
case 2: return R.string.color_blue3;
|
|
440
|
case 3: return R.string.color_red3;
|
|
441
|
}
|
|
442
|
|
|
443
|
return -1;
|
|
444
|
}
|
|
445
|
|
|
446
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
|
447
|
|
|
448
|
private int getFaceIndex6(int face)
|
|
449
|
{
|
|
450
|
switch(mFaceColors[face])
|
|
451
|
{
|
|
452
|
case 0: return R.string.color_green6;
|
|
453
|
case 1: return R.string.color_yellow6;
|
|
454
|
case 2: return R.string.color_blue6;
|
|
455
|
case 3: return R.string.color_red6;
|
|
456
|
}
|
|
457
|
|
|
458
|
return -1;
|
|
459
|
}
|
|
460
|
|
|
461
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
|
462
|
|
|
463
|
private String cornerError(Resources res, int color0, int color1, int color2)
|
|
464
|
{
|
|
465
|
int j0 = getColorIndex3(color0);
|
|
466
|
int j1 = getColorIndex3(color1);
|
|
467
|
int j2 = getColorIndex4(color2);
|
|
468
|
|
|
469
|
String c0 = res.getString(j0);
|
|
470
|
String c1 = res.getString(j1);
|
|
471
|
String c2 = res.getString(j2);
|
|
472
|
|
|
473
|
return res.getString(R.string.solver_generic_missing_corner,c0,c1,c2);
|
|
474
|
}
|
|
475
|
|
|
476
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
|
477
|
|
|
478
|
private String edgeError(Resources res, int face0, int face1)
|
|
479
|
{
|
|
480
|
int j0 = getFaceIndex3(face0);
|
|
481
|
int j1 = getFaceIndex6(face1);
|
|
482
|
|
|
483
|
String c0 = res.getString(j0);
|
|
484
|
String c1 = res.getString(j1);
|
|
485
|
|
|
486
|
return res.getString(R.string.solver_generic_missing_edge,c0,c1);
|
|
487
|
}
|
|
488
|
|
|
489
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
|
490
|
|
|
491
|
public String error(int index, Resources res)
|
|
492
|
{
|
|
493
|
switch(index)
|
|
494
|
{
|
|
495
|
case ERROR_CORNER_YBR_MISSING: return cornerError(res,3,2,1);
|
|
496
|
case ERROR_CORNER_GBR_MISSING: return cornerError(res,3,2,0);
|
|
497
|
case ERROR_CORNER_GYR_MISSING: return cornerError(res,3,1,0);
|
|
498
|
case ERROR_CORNER_GYB_MISSING: return cornerError(res,2,1,0);
|
|
499
|
case ERROR_EDGE_RB_MISSING : return edgeError(res,3,2);
|
|
500
|
case ERROR_EDGE_RY_MISSING : return edgeError(res,2,0);
|
|
501
|
case ERROR_EDGE_RG_MISSING : return edgeError(res,2,1);
|
|
502
|
case ERROR_EDGE_YB_MISSING : return edgeError(res,3,0);
|
|
503
|
case ERROR_EDGE_GB_MISSING : return edgeError(res,3,1);
|
|
504
|
case ERROR_EDGE_GY_MISSING : return edgeError(res,1,0);
|
|
505
|
case ERROR_CENTER_G_MISSING : String colorG = res.getString(R.string.color_green2);
|
|
506
|
return res.getString(R.string.solver_generic_missing_center,colorG);
|
|
507
|
case ERROR_CENTER_Y_MISSING : String colorY = res.getString(R.string.color_yellow2);
|
|
508
|
return res.getString(R.string.solver_generic_missing_center,colorY);
|
|
509
|
case ERROR_CENTER_B_MISSING : String colorB = res.getString(R.string.color_blue2);
|
|
510
|
return res.getString(R.string.solver_generic_missing_center,colorB);
|
|
511
|
case ERROR_CENTER_R_MISSING : String colorR = res.getString(R.string.color_red2);
|
|
512
|
return res.getString(R.string.solver_generic_missing_center,colorR);
|
|
513
|
case ERROR_CORNER_TWISTED : return res.getString(R.string.solver_generic_corner_twist);
|
|
514
|
case ERROR_EDGE_TWISTED : return res.getString(R.string.solver_generic_edge_twist);
|
|
515
|
case ERROR_CORNERS_CANNOT : return res.getString(R.string.solver_generic_corners_cannot);
|
|
516
|
case ERROR_TWO_EDGES : return res.getString(R.string.solver_generic_two_edges);
|
|
517
|
case ERROR_TWO_CENTERS : return res.getString(R.string.solver_generic_two_centers);
|
|
518
|
}
|
|
519
|
|
|
520
|
return null;
|
|
521
|
}
|
|
522
|
|
|
523
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
|
524
|
|
|
525
|
public int[][] solution(int index, Resources res)
|
|
526
|
{
|
|
527
|
if( mSolver==null )
|
|
528
|
{
|
|
529
|
mSolver = ImplementedTablebasesList.createPacked(res,ObjectSignatures.JING_2);
|
|
530
|
}
|
|
531
|
|
|
532
|
return mSolver!=null ? mSolver.solution(index,null) : null;
|
|
533
|
}
|
|
534
|
}
|
|
535
|
|