tptimer/pyTwistyScrambler/js_resources/2x2x3.js

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2018-07-20 05:43:02 +00:00
var scrambler223 = (function(circle, get8Perm) {
var cmv = [];
var cprun = [];
function initCornerMoveTable() {
var g = [],
temp;
for (var i = 0; i < 40320; i++) {
cmv[i] = [];
}
for (var i = 0; i < 40320; i++) {
mathlib.set8Perm(g, i);
circle(g, 0, 1, 2, 3);
temp = cmv[0][i] = get8Perm(g); //U
circle(g, 4, 5, 6, 7);
temp = cmv[1][temp] = get8Perm(g); //D
circle(g, 2, 5)(g, 3, 6);
temp = cmv[2][temp] = get8Perm(g); //R
circle(g, 0, 5)(g, 3, 4);
cmv[3][temp] = get8Perm(g); //F
}
}
function doEdgeMove(idx, m) {
if (m < 2) {
return idx;
}
var g = [];
mathlib.set8Perm(g, idx, 3);
if (m == 2) {
circle(g, 0, 1);
} else if (m == 3) {
circle(g, 0, 2);
}
return get8Perm(g, 3);
}
// function doMv(idx, m) {
// return cmv[~~(idx / 6)][m] * 6 + doEdgeMove(idx % 6, m);
// }
function init() {
initCornerMoveTable();
mathlib.createPrun(cprun, 0, 40320, 12, cmv, 4, 3);
// mathlib.createPrun([], 0, 40320 * 6, 15, doMv, 4, 3);
}
function search(corner, edge, maxl, lm, sol) {
if (maxl == 0) {
return corner + edge == 0;
}
if (mathlib.getPruning(cprun, corner) > maxl) return false;
var h, g, f, i;
for (i = 0; i < 4; i++) {
if (i != lm) {
h = corner;
g = edge;
for (f = 0; f < (i < 2 ? 3 : 1); f++) {
h = cmv[i][h];
g = doEdgeMove(g, i);
if (search(h, g, maxl - 1, i, sol)) {
sol.push(["U", "D", "R2", "F2"][i] + (i < 2 ? " 2'".charAt(f) : ""));
return true;
}
}
}
}
}
function generateScramble() {
init();
var d = [];
var a = 0,
b, c;
do {
c = mathlib.rn(40320);
b = mathlib.rn(6);
} while (b + c == 0)
for (a = 0; a < 99; a++) {
if (search(c, b, a, -1, d)) {
break;
}
}
return d.reverse().join(" ")
}
return {
get223scramble: generateScramble,
}
//scramble.reg('223', generateScramble);
})(mathlib.circle, mathlib.get8Perm);