internal static void InitTwistMove()
{
CubieCube c = new CubieCube();
CubieCube d = new CubieCube();
for (int i = 0; i < N_TWIST_SYM; i++)
{
c.SetTwist(CubieCube.TwistS2R[i]);
for (int j = 0; j < N_MOVES; j++)
{
CubieCube.CornMult(c, CubieCube.MoveCube[j], d);
TwistMove[i][j] = (char)d.GetTwistSym();
}
}
}
private string Solve(CubieCube c)
{
Tools.Init();
int conjMask = 0;
for (int i = 0; i < 6; i++)
{
twist[i] = c.GetTwistSym();
flip[i] = c.GetFlipSym();
slice[i] = c.GetUDSlice();
corn0[i] = c.GetCPermSym();
ud8e0[i] = c.GetU4Comb() << 16 | c.GetD4Comb();
for (int j = 0; j < i; j++)
{ //If S_i^-1 * C * S_i == C, It's unnecessary to compute it again.
if (twist[i] == twist[j] && flip[i] == flip[j] && slice[i] == slice[j] &&
corn0[i] == corn0[j] && ud8e0[i] == ud8e0[j])
{
conjMask |= 1 << i;
break;
}
}
if ((conjMask & (1 << i)) == 0)
{
prun[i] = Math.Max(Math.Max(
CoordCube.GetPruning(CoordCube.UDSliceTwistPrun,
((int)(twist[i] >> 3)) * 495 + CoordCube.UDSliceConj[slice[i] & 0x1ff][twist[i] & 7]),
CoordCube.GetPruning(CoordCube.UDSliceFlipPrun,
((int)((uint)flip[i] >> 3)) * 495 + CoordCube.UDSliceConj[slice[i] & 0x1ff][flip[i] & 7])),
Tools.USE_TWIST_FLIP_PRUN ? CoordCube.GetPruning(CoordCube.TwistFlipPrun,
((int)(twist[i] >> 3)) * 2688 + (flip[i] & 0xfff8 | CubieCube.Sym8MultInv[flip[i] & 7][twist[i] & 7])) : 0);
}
c.URFConjugate();
if (i == 2)
{
c.InvCubieCube();
}
}
for (depth1 = 0; depth1 < sol; depth1++)
{
maxDep2 = Math.Min(12, sol - depth1);
for (urfIdx = 0; urfIdx < 6; urfIdx++)
{
if ((firstAxisRestriction != -1 || lastAxisRestriction != -1) && urfIdx >= 3)
{
// When urfIdx >= 3, we're solving the
// inverse cube. This doesn't work
// when we're also restricting the
// first turn, so we just skip inverse
// solutions when firstAxisRestriction has
// been set.
continue;
}
if ((conjMask & (1 << urfIdx)) != 0)
{
continue;
}
corn[0] = corn0[urfIdx];
mid4[0] = slice[urfIdx];
ud8e[0] = ud8e0[urfIdx];
valid1 = 0;
int lm = firstAxisRestriction == -1 ? -1 : CubieCube.URFMoveInv[urfIdx][firstAxisRestriction] / 3 * 3;
if ((prun[urfIdx] <= depth1) &&
Phase1((int)((uint)twist[urfIdx] >> 3), twist[urfIdx] & 7, (int)((uint)flip[urfIdx] >> 3), flip[urfIdx] & 7,
slice[urfIdx] & 0x1ff, depth1, lm) == 0)
{
return(solution == null ? "Error 8" : solution);
}
}
}
return(solution == null ? "Error 7" : solution);
}