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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.TwistyObject;
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import org.distorted.objectlib.tablebases.TablebasesPyraminxDuo;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public class SolverPyraminxDuo 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_CENTER_G_MISSING = -5;
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private static final int ERROR_CENTER_Y_MISSING = -6;
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private static final int ERROR_CENTER_B_MISSING = -7;
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private static final int ERROR_CENTER_R_MISSING = -8;
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private static final int ERROR_TWO_CENTERS_SWAP = -9;
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private static final int ERROR_CORNER_TWISTED = -10;
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private static final int ERROR_CORNERS_CANNOT = -11;
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TablebasesPyraminxDuo mSolver;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private boolean cornerEqual(int[] corner, int c1, int c2, int c3)
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{
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return ( (corner[0]==c1 && corner[1]==c2 && corner[2]==c3) ||
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(corner[0]==c1 && corner[2]==c2 && corner[1]==c3) ||
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(corner[1]==c1 && corner[0]==c2 && corner[2]==c3) ||
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(corner[1]==c1 && corner[2]==c2 && corner[0]==c3) ||
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(corner[2]==c1 && corner[1]==c2 && corner[0]==c3) ||
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(corner[2]==c1 && corner[0]==c2 && corner[1]==c3) );
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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( cornerEqual(corners[i],0,1,2) ) gyb = true;
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if( cornerEqual(corners[i],0,1,3) ) gyr = true;
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if( cornerEqual(corners[i],0,2,3) ) gbr = true;
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if( cornerEqual(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 checkAllCentersPresent(int[] centers)
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{
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if( centers[0]!=0 && centers[1]!=0 && centers[2]!=0 && centers[3]!=0 ) return ERROR_CENTER_G_MISSING;
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if( centers[0]!=1 && centers[1]!=1 && centers[2]!=1 && centers[3]!=1 ) return ERROR_CENTER_Y_MISSING;
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if( centers[0]!=2 && centers[1]!=2 && centers[2]!=2 && centers[3]!=2 ) return ERROR_CENTER_B_MISSING;
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if( centers[0]!=3 && centers[1]!=3 && centers[2]!=3 && centers[3]!=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 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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private int[] computeMissingCornerColor(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 computeCornerTwist(int index, int[] corner, int[] missing)
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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]==missing[1] ) twist1=1;
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if( corner[2]==missing[1] ) twist1=2;
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if( corner[0]==missing[2] ) twist2=2;
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if( corner[2]==missing[2] ) twist2=1;
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if( corner[0]==missing[3] ) twist3=1;
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if( corner[1]==missing[3] ) twist3=2;
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break;
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case 1: if( corner[1]==missing[0] ) twist1=1;
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if( corner[2]==missing[0] ) twist1=2;
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if( corner[0]==missing[2] ) twist2=1;
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if( corner[1]==missing[2] ) twist2=2;
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if( corner[0]==missing[3] ) twist3=2;
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if( corner[2]==missing[3] ) twist3=1;
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break;
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case 2: if( corner[1]==missing[0] ) twist1=1;
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if( corner[2]==missing[0] ) twist1=2;
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if( corner[0]==missing[1] ) twist2=2;
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if( corner[2]==missing[1] ) twist2=1;
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if( corner[0]==missing[3] ) twist3=1;
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if( corner[1]==missing[3] ) twist3=2;
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break;
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case 3: if( corner[1]==missing[0] ) twist1=1;
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if( corner[2]==missing[0] ) twist1=2;
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if( corner[0]==missing[1] ) twist2=1;
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if( corner[1]==missing[1] ) twist2=2;
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if( corner[0]==missing[2] ) twist3=2;
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if( corner[2]==missing[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 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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public SolverPyraminxDuo(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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public int tablebaseIndex(TwistyObject object)
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{
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int[][] corners = new int[4][3];
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int[] centers = new int[4];
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int[] corner_twist = new int[4];
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for(int i=0; i<4; i++)
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{
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centers[i] = object.getCubitFaceStickerIndex(i+4,0) - 4;
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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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int result1 = checkAllCornersPresent(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[] missing = computeMissingCornerColor(corners);
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int twist_gr = computeCenterTwist(centers,missing[1],missing[2]);
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int twist_ry = computeCenterTwist(centers,missing[2],missing[0]);
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if( (twist_ry-twist_gr+1)%3 != 0 ) return ERROR_TWO_CENTERS_SWAP;
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int total_twist=0;
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for(int i=0; i<4; i++)
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{
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corner_twist[i] = computeCornerTwist(i,corners[i],missing);
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if( corner_twist[i]<0 ) return corner_twist[i];
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total_twist += corner_twist[i];
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}
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if( (total_twist-twist_gr)%3 !=0 ) return ERROR_CORNER_TWISTED;
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int green_face = getFaceOfCenter(missing[1],centers);
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return green_face + 4*(corner_twist[3] + 3*(corner_twist[2] + 3*(corner_twist[1] + 3*corner_twist[0])));
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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_YBR_MISSING: String c01 = res.getString(R.string.color_yellow3);
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String c02 = res.getString(R.string.color_blue3);
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String c03 = res.getString(R.string.color_red4);
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return res.getString(R.string.solver_generic_missing_corner,c01,c02,c03);
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case ERROR_CORNER_GBR_MISSING: String c11 = res.getString(R.string.color_green3);
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String c12 = res.getString(R.string.color_blue3);
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String c13 = res.getString(R.string.color_red4);
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return res.getString(R.string.solver_generic_missing_corner,c11,c12,c13);
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case ERROR_CORNER_GYR_MISSING: String c21 = res.getString(R.string.color_green3);
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String c22 = res.getString(R.string.color_yellow3);
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String c23 = res.getString(R.string.color_red4);
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return res.getString(R.string.solver_generic_missing_corner,c21,c22,c23);
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case ERROR_CORNER_GYB_MISSING: String c31 = res.getString(R.string.color_green3);
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String c32 = res.getString(R.string.color_yellow3);
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String c33 = res.getString(R.string.color_blue4);
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return res.getString(R.string.solver_generic_missing_corner,c31,c32,c33);
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case ERROR_CENTER_G_MISSING : String colorG = res.getString(R.string.color_green2);
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return res.getString(R.string.solver_generic_missing_center,colorG);
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case ERROR_CENTER_Y_MISSING : String colorY = res.getString(R.string.color_yellow2);
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return res.getString(R.string.solver_generic_missing_center,colorY);
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case ERROR_CENTER_B_MISSING : String colorB = res.getString(R.string.color_blue2);
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return res.getString(R.string.solver_generic_missing_center,colorB);
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case ERROR_CENTER_R_MISSING : String colorR = res.getString(R.string.color_red2);
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return res.getString(R.string.solver_generic_missing_center,colorR);
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case ERROR_TWO_CENTERS_SWAP : return res.getString(R.string.solver_generic_two_centers);
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case ERROR_CORNER_TWISTED : return res.getString(R.string.solver_generic_corner_twist);
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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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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 = new TablebasesPyraminxDuo(res,org.distorted.objectlib.R.raw.pduo_2_tablebase);
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}
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return mSolver.solution(index);
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}
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}
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