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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.objectlib.tablebases;
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import android.content.res.Resources;
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import org.distorted.library.type.Static3D;
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import org.distorted.objectlib.R;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public class TBCube2 extends TablebasesPruning
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{
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private final int[][][] mQuatsMap =
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{
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{ { 0,21,13}, { 1, 6,18}, { 3,17, 7}, { 2,12,22}, {14, 4, 9}, { 5,10,15}, { 8,20,23}, {11,16,19} },
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{ { 3,18, 4}, { 0,22,10}, { 2,13,20}, { 1, 7,16}, { 5,23,21}, {11, 9, 6}, {14,19,17}, { 8,15,12} },
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{ { 1, 9,17}, { 2,15,21}, { 0,23,12}, { 3,19, 6}, { 8,13,10}, {14,18,16}, {11, 7, 4}, { 5,22,20} },
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{ { 2,10,23}, { 3,16, 9}, { 1, 4,19}, { 0,20,15}, {11,17,18}, { 8,21,22}, { 5,12,13}, {14, 6, 7} },
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{ {14, 7, 6}, { 5,13,12}, { 8,22,21}, {11,18,17}, { 0,15,20}, { 1,19, 4}, { 3, 9,16}, { 2,23,10} },
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{ { 5,20,22}, {11, 4, 7}, {14,16,18}, { 8,10,13}, { 3, 6,19}, { 0,12,23}, { 2,21,15}, { 1,17, 9} },
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{ { 8,12,15}, {14,17,19}, {11, 6, 9}, { 5,21,23}, { 1,16, 7}, { 2,20,13}, { 0,10,22}, { 3, 4,18} },
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{ {11,19,16}, { 8,23,20}, { 5,15,10}, {14, 9, 4}, { 2,22,12}, { 3, 7,17}, { 1,18, 6}, { 0,13,21} },
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};
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public TBCube2()
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{
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super();
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public TBCube2(Resources res)
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{
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super(res, new int[] {R.raw.cube_2_pruning4,R.raw.cube_2_pruning5}, new int[] {R.raw.cube_2_pruning11} );
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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int[][] getBasicAngles()
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{
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int[] tmp = {4,4};
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return new int[][] { tmp,tmp,tmp };
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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Static3D[] getRotationAxis()
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{
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return new Static3D[]
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{
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new Static3D(1,0,0),
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new Static3D(0,1,0),
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new Static3D(0,0,1)
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};
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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float[][] getPosition()
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{
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return new float[][]
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{
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{ -0.5f, -0.5f, -0.5f },
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{ -0.5f, -0.5f, 0.5f },
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{ -0.5f, 0.5f, -0.5f },
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{ -0.5f, 0.5f, 0.5f },
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{ 0.5f, -0.5f, -0.5f },
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{ 0.5f, -0.5f, 0.5f },
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{ 0.5f, 0.5f, -0.5f },
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{ 0.5f, 0.5f, 0.5f },
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};
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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float[][] getCuts()
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{
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return new float[][] { {0.0f}, {0.0f}, {0.0f} };
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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boolean[][] getRotatable()
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{
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return new boolean[][] { {false,true},{false,true},{true,false} };
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// specifically for the tablebase
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// 7!*3^6 --> https://www.jaapsch.net/puzzles/cube2.htm
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int getSize()
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{
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return 3674160;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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int getMinScramble()
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{
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return 9;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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int[] getMidPruningLevels()
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{
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return new int[] {4,5};
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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int[] getHighPruningLevels()
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{
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return new int[] {11};
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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int getGodsNumber()
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{
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return 11;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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boolean moveCanProceed(int lastA, int lastR, int currA, int currR)
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{
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return lastA!=currA;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public static int[] shrinkPerm(int[] perm8)
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{
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int[] perm7 = new int[7];
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int tmp = perm8[0];
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perm7[0] = tmp>1 ? tmp-1 : tmp;
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tmp = perm8[2];
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perm7[1] = tmp>1 ? tmp-1 : tmp;
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tmp = perm8[3];
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perm7[2] = tmp>1 ? tmp-1 : tmp;
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tmp = perm8[4];
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perm7[3] = tmp>1 ? tmp-1 : tmp;
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tmp = perm8[5];
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perm7[4] = tmp>1 ? tmp-1 : tmp;
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tmp = perm8[6];
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perm7[5] = tmp>1 ? tmp-1 : tmp;
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tmp = perm8[7];
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perm7[6] = tmp>1 ? tmp-1 : tmp;
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return perm7;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private static int[] growPerm(int[] perm7)
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{
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int[] perm8 = new int[8];
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int tmp = perm7[0];
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perm8[0] = tmp>=1 ? tmp+1 : tmp;
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perm8[1] = 1;
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tmp = perm7[1];
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perm8[2] = tmp>=1 ? tmp+1 : tmp;
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tmp = perm7[2];
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perm8[3] = tmp>=1 ? tmp+1 : tmp;
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tmp = perm7[3];
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perm8[4] = tmp>=1 ? tmp+1 : tmp;
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tmp = perm7[4];
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perm8[5] = tmp>=1 ? tmp+1 : tmp;
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tmp = perm7[5];
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perm8[6] = tmp>=1 ? tmp+1 : tmp;
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tmp = perm7[6];
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perm8[7] = tmp>=1 ? tmp+1 : tmp;
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return perm8;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private int[] getPerm(int permNum)
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{
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int[] perm7 = new int[7];
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TablebaseHelpers.getPermutationFromNum(perm7,7,permNum);
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return growPerm(perm7);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private int[] getTwist(int twistNum)
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{
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int[] twist = new int[8];
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twist[0] = twistNum%3;
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twist[1] = 0;
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twistNum /=3;
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twist[2] = twistNum%3;
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twistNum /=3;
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twist[3] = twistNum%3;
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twistNum /=3;
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twist[4] = twistNum%3;
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twistNum /=3;
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twist[5] = twistNum%3;
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twistNum /=3;
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twist[6] = twistNum%3;
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int total = (twist[0]+twist[2]+twist[3]+twist[4]+twist[5]+twist[6])%3;
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if( total==0 ) twist[7] = 0;
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else twist[7] = 3-total;
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return twist;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public int[] getQuats(int index)
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{
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int twistNum = index%729;
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int permuNum = index/729;
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int[] twist = getTwist(twistNum);
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int[] perm = getPerm(permuNum);
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int[] quats = new int[8];
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for(int i=0; i<8; i++) quats[i] = mQuatsMap[i][perm[i]][twist[i]];
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return quats;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private void extractTwistAndPerm(int quat, int[][] map, int[] twist, int[] perm, int index)
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{
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for(int i=0; i<8; i++)
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for(int j=0; j<3; j++)
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if( map[i][j]==quat )
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{
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twist[index] = j;
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perm[index] = i;
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break;
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public int getIndex(int[] quats)
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{
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int[] twist = new int[8];
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int[] perm8 = new int[8];
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for(int i=0; i<8; i++) extractTwistAndPerm(quats[i],mQuatsMap[i],twist,perm8,i);
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int[] perm7 = shrinkPerm(perm8);
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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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int permNum = TablebaseHelpers.computePermutationNum(perm7);
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if( permNum<0 )
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{
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android.util.Log.e("D", " permNum="+permNum );
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StringBuilder sb2 = new StringBuilder();
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for(int i=0; i<8; i++) { sb2.append(' '); sb2.append(perm8[i]); }
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android.util.Log.e("D", " perm8="+sb2 );
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StringBuilder sb3 = new StringBuilder();
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for(int i=0; i<8; i++) { sb3.append(' '); sb3.append(quats[i]); }
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android.util.Log.e("D", " quats="+sb3 );
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}
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return twistNum + 729*permNum;
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}
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}
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