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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 SolverPyraminxDiamond extends SolverTablebase
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{
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private static final int ERROR_CORNER_FR_MISSING = -1;
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private static final int ERROR_CORNER_BR_MISSING = -2;
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private static final int ERROR_CORNER_BL_MISSING = -3;
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private static final int ERROR_CORNER_FL_MISSING = -4;
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private static final int ERROR_CORNER_TO_MISSING = -5;
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private static final int ERROR_CORNER_BO_MISSING = -6;
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private static final int ERROR_CENTER_0_MISSING = -7;
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private static final int ERROR_CENTER_1_MISSING = -8;
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private static final int ERROR_CENTER_2_MISSING = -9;
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private static final int ERROR_CENTER_3_MISSING = -10;
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private static final int ERROR_CENTER_4_MISSING = -11;
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private static final int ERROR_CENTER_5_MISSING = -12;
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private static final int ERROR_CENTER_6_MISSING = -13;
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private static final int ERROR_CENTER_7_MISSING = -14;
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private static final int ERROR_TWO_CENTERS = -15;
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private static final int ERROR_CORNERS_CANNOT = -16;
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private TablebasesAbstract mSolver;
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private final int[] mFaceColors;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public SolverPyraminxDiamond(Resources res, TwistyObject object)
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{
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super(res,object);
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mFaceColors = new int[8];
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private int retCenter(int color, int[] centers)
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{
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for(int i=0; i<8; i++ )
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if( centers[i]==color ) return i;
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return -1;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private int[] getCentersPermutation(int[] centers)
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{
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int[] perm = new int[8];
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for(int i=0; i<8; i++ )
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perm[i] = retCenter(mFaceColors[i],centers);
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return perm;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private boolean isTwistEven(int[] twist)
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{
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int total = twist[0]+twist[1]+twist[2]+twist[3]+twist[4]+twist[5];
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return ((total%2)==0);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private int indexOf(int[] corner, int color )
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{
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if( corner[0]==color ) return 0;
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if( corner[1]==color ) return 1;
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if( corner[2]==color ) return 2;
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if( corner[3]==color ) return 3;
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return -1;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private int[] getCornersTwist(int[][] corners)
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{
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int[] twist = new int[6];
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twist[0] = indexOf(corners[0],mFaceColors[0]);
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twist[1] = indexOf(corners[1],mFaceColors[5]);
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twist[2] = indexOf(corners[2],mFaceColors[2]);
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twist[3] = indexOf(corners[3],mFaceColors[4]);
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twist[4] = indexOf(corners[4],mFaceColors[2]);
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twist[5] = indexOf(corners[5],mFaceColors[6]);
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return twist;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private int checkAllColorsDifferent()
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{
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for(int i=0; i<8; i++)
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{
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boolean present = false;
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for(int j=0; j<8; j++)
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if( mFaceColors[j]==i )
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{
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present=true;
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break;
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}
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if( !present ) 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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private int checkAllCentersPresent(int[] centers)
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{
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for(int i=0; i<8; i++)
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{
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boolean present = false;
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for(int j=0; j<8; j++)
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if( centers[j]==i )
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{
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present=true;
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break;
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}
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if( !present )
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{
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switch(i)
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{
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case 0: return ERROR_CENTER_0_MISSING;
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case 1: return ERROR_CENTER_1_MISSING;
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case 2: return ERROR_CENTER_2_MISSING;
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case 3: return ERROR_CENTER_3_MISSING;
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case 4: return ERROR_CENTER_4_MISSING;
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case 5: return ERROR_CENTER_5_MISSING;
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case 6: return ERROR_CENTER_6_MISSING;
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case 7: return ERROR_CENTER_7_MISSING;
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}
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}
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}
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return 0;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private int commonColor(int[][] corners, int index1, int index2, int index3)
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{
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int[] c1 = corners[index1];
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int[] c2 = corners[index2];
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int[] c3 = corners[index3];
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for(int i=0; i<4; i++)
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{
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int c = c1[i];
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if( (c2[0]==c || c2[1]==c || c2[2]==c || c2[3]==c) &&
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(c3[0]==c || c3[1]==c || c3[2]==c || c3[3]==c) ) return c;
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}
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return ERROR_CORNERS_CANNOT;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private int figureOutFaceColors(int[] output, int[][] corners)
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{
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int[][] commonCorners = {{0,2,4},{0,3,5},{1,2,4},{1,3,5},{0,2,3},{1,2,3},{0,4,5},{1,4,5}};
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for(int i=0; i<8; i++)
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{
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int[] common = commonCorners[i];
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output[i] = commonColor(corners,common[0],common[1],common[2]);
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if( output[i]<0 ) return output[i];
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}
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return 0;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private void getCorners(TwistyObject object, int[][] corners)
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{
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for(int i=0; i<6; i++)
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for(int j=0; j<4; j++)
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corners[i][j] = object.getCubitFaceStickerIndex(i,j);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private void getCenters(TwistyObject object, int[] centers)
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{
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for(int i=0; i<8; i++)
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centers[i] = object.getCubitFaceStickerIndex(6+i,0)-8;
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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[6][4];
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int[] centers = new int[8];
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getCorners(object,corners);
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getCenters(object,centers);
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int result1 = figureOutFaceColors(mFaceColors,corners);
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if( result1<0 ) return result1;
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int result2 = checkAllCentersPresent(centers);
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if( result2<0 ) return result2;
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int result3 = checkAllColorsDifferent();
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if( result3<0 ) return result3;
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int[] twist = getCornersTwist(corners);
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boolean even1 = isTwistEven(twist);
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int[] centers_perm = getCentersPermutation(centers);
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boolean even2 = TablebaseHelpers.permutationIsEven(centers_perm);
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if( even1^even2 ) return ERROR_TWO_CENTERS;
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int centers_perm_num = TablebaseHelpers.computePermutationNum(centers_perm);
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int total_twist = twist[0]+ 4*(twist[1]+ 4*(twist[2]+ 4*(twist[3]+ 4*(twist[4]+ 4*(twist[5]>1 ? 0:1)))));
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/*
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android.util.Log.e("D", "faces: "+mFaceColors[0]+" "+mFaceColors[1]+" "+mFaceColors[2]+" "
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+mFaceColors[3]+" "+mFaceColors[4]+" "+mFaceColors[5]+" "+mFaceColors[6]+" "+mFaceColors[7]);
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android.util.Log.e("D", "corn twist: "+twist[0]+" "+twist[1]+" "+twist[2]+" "+twist[3]+" "+twist[4]+" "+twist[5]);
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android.util.Log.e("D", "ret="+(total_twist + 2048*centers_perm_num) );
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*/
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return total_twist + 2048*centers_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_violet4;
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case 1: return R.string.color_grey4;
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case 2: return R.string.color_blue4;
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case 3: return R.string.color_red4;
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case 4: return R.string.color_orange4;
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case 5: return R.string.color_green4;
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case 6: return R.string.color_white4;
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case 7: return R.string.color_yellow4;
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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_violet3;
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case 1: return R.string.color_grey3;
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case 2: return R.string.color_blue3;
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case 3: return R.string.color_red3;
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case 4: return R.string.color_orange3;
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case 5: return R.string.color_green3;
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case 6: return R.string.color_white3;
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case 7: return R.string.color_yellow3;
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}
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return -1;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private int getColorIndex2(int face)
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{
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switch(face)
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{
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case 0: return R.string.color_violet2;
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case 1: return R.string.color_grey2;
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case 2: return R.string.color_blue2;
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case 3: return R.string.color_red2;
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case 4: return R.string.color_orange2;
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case 5: return R.string.color_green2;
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case 6: return R.string.color_white2;
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case 7: return R.string.color_yellow2;
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}
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return -1;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private String centerError(Resources res, int face)
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{
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String color = res.getString(getColorIndex2(face));
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return res.getString(R.string.solver_generic_missing_center,color);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private String cornerError(Resources res, int f1, int f2)
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{
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String c1 = res.getString(getColorIndex3(f1));
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String c2 = res.getString(getColorIndex4(f2));
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return res.getString(R.string.solver_generic_missing_corner2,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_FR_MISSING: return cornerError(res,1,4);
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case ERROR_CORNER_BR_MISSING: return cornerError(res,1,6);
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case ERROR_CORNER_BL_MISSING: return cornerError(res,3,6);
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case ERROR_CORNER_FL_MISSING: return cornerError(res,3,4);
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case ERROR_CORNER_TO_MISSING: return cornerError(res,1,3);
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case ERROR_CORNER_BO_MISSING: return cornerError(res,4,6);
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case ERROR_CENTER_0_MISSING : return centerError(res,0);
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case ERROR_CENTER_1_MISSING : return centerError(res,1);
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case ERROR_CENTER_2_MISSING : return centerError(res,2);
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case ERROR_CENTER_3_MISSING : return centerError(res,3);
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case ERROR_CENTER_4_MISSING : return centerError(res,4);
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case ERROR_CENTER_5_MISSING : return centerError(res,5);
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case ERROR_CENTER_6_MISSING : return centerError(res,6);
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case ERROR_CENTER_7_MISSING : return centerError(res,7);
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case ERROR_TWO_CENTERS : return res.getString(R.string.solver_generic_two_centers);
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case ERROR_CORNERS_CANNOT : return res.getString(R.string.solver_generic_corners_cannot);
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}
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return null;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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363
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public int[][] solution(int index, Resources res)
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{
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366
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if( mSolver==null )
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367
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{
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mSolver = ImplementedTablebasesList.createUnpacked(ObjectSignatures.PDIA_3);
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369
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if( mSolver!=null )
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{
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mSolver.createTablebase(2);
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}
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}
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375
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return mSolver!=null ? mSolver.solution(index,null) : null;
|
|
377
|
}
|
|
378
|
}
|
|
379
|
|