public static int getindex(Cube c, out int symtype)
{
int t = c.GetCornerTwistIndex();
int tg = twistSymGroup[t];
int e = c.GetEdgeFlipIndex();
int d = c.GetMiddleEdgeDistributionIndex();
int es = int.MaxValue;
int ds = int.MaxValue;
symtype = -1;
for (int s = 0; s < 4; s++)
{
if (symGroupMembers[tg][s] == t)
{
int etmp = symEdgeFlipIndex[e][s];
int dtmp = symMiddleEdgeDistributionIndex[d][s];
if ((etmp < es) || (etmp == es && dtmp < ds))
{
es = etmp;
ds = dtmp;
symtype = s;
}
}
}
return(tg + 594 * (es + 2048 * ds));
}
private static void BuildSymmetricalIndizes()
{
Cube c = new Cube();
symEdgeFlipIndex = new int[2048][];
for (int i = 0; i < symEdgeFlipIndex.Length; i++)
{
c.SetEdgeFlipFromIndex(i);
int s0 = c.GetEdgeFlipIndex();
c.MirrorUD();
int ud = c.GetEdgeFlipIndex();
c.MirrorLR();
int ud_lr = c.GetEdgeFlipIndex();
c.MirrorUD();
int lr = c.GetEdgeFlipIndex();
c.MirrorLR();
if (i != s0 || i != c.GetEdgeFlipIndex())
{
Console.WriteLine("Edge flip mirror calcuation error");
}
symEdgeFlipIndex[i] = new int[] { s0, ud, lr, ud_lr };
}
symMiddleEdgeDistributionIndex = new int[495][];
for (int i = 0; i < symMiddleEdgeDistributionIndex.Length; i++)
{
c.SetMiddleEdgeDistributionFromIndex(i);
int s0 = c.GetMiddleEdgeDistributionIndex();
c.MirrorUD();
int ud = c.GetMiddleEdgeDistributionIndex();
c.MirrorLR();
int ud_lr = c.GetMiddleEdgeDistributionIndex();
c.MirrorUD();
int lr = c.GetMiddleEdgeDistributionIndex();
c.MirrorLR();
if (i != s0 || i != c.GetMiddleEdgeDistributionIndex())
{
Console.WriteLine("Middle Edge Distribution mirror calcuation error: " + i + "!=" + s0);
}
symMiddleEdgeDistributionIndex[i] = new int[] { s0, ud, lr, ud_lr };
}
}
public static int Solve(Cube c, int[] histogram)
{
FileStream file = new FileStream("c:/temp/phase1.bin", FileMode.Open, FileAccess.Read);
int m;
int i = getindex(c, out m);
Console.Write(i + ":" + m + " ");
int turns = 0;
int time = 0;
for (;;)
{
i = getindex(c, out m);
// Console.Write("("+m+")");
file.Seek(i, SeekOrigin.Begin);
int b = file.ReadByte();
if (b <= 0)
{
if (c.GetCornerTwistIndex() != 0 || c.GetEdgeFlipIndex() != 0 || c.GetMiddleEdgeDistributionIndex() != 0)
{
Console.WriteLine("Phase 1 leads to unfinished cube");
return(-1);
}
break; // no more moves - finish operation
}
int a = Cube.sym_actions[m].IndexOf((char)b);
turns++;
time += Cube.time_actions[a];
histogram[a]++;
Console.Write(Cube.sym_actions[0][a]);
c.DoReverseAction(a);
if (turns == 35)
{
Console.WriteLine("Not finding solution...");
}
}
// Console.Write(" ("+turns + "/"+time+")");
file.Close();
return(time);
}
private static void BuildSymmetricalIndizes()
{
Cube c = new Cube();
symEdgeFlipIndex = new int[2048][];
for (int i = 0; i < symEdgeFlipIndex.Length; i++)
{
c.SetEdgeFlipFromIndex(i);
int s0 = c.GetEdgeFlipIndex();
c.MirrorUD();
int ud = c.GetEdgeFlipIndex();
c.MirrorLR();
int ud_lr = c.GetEdgeFlipIndex();
c.MirrorUD();
int lr = c.GetEdgeFlipIndex();
c.MirrorLR();
if (i != s0 || i!=c.GetEdgeFlipIndex())
{
Console.WriteLine("Edge flip mirror calcuation error");
}
symEdgeFlipIndex[i] = new int[] { s0, ud, lr, ud_lr };
}
symMiddleEdgeDistributionIndex = new int[495][];
for (int i = 0; i < symMiddleEdgeDistributionIndex.Length; i++)
{
c.SetMiddleEdgeDistributionFromIndex(i);
int s0 = c.GetMiddleEdgeDistributionIndex();
c.MirrorUD();
int ud = c.GetMiddleEdgeDistributionIndex();
c.MirrorLR();
int ud_lr = c.GetMiddleEdgeDistributionIndex();
c.MirrorUD();
int lr = c.GetMiddleEdgeDistributionIndex();
c.MirrorLR();
if (i != s0 || i != c.GetMiddleEdgeDistributionIndex())
{
Console.WriteLine("Middle Edge Distribution mirror calcuation error: "+i+"!="+s0);
}
symMiddleEdgeDistributionIndex[i] = new int[] { s0, ud, lr, ud_lr };
}
}
public static int Solve(Cube c, int[] histogram)
{
FileStream file = new FileStream("c:/temp/phase1.bin", FileMode.Open, FileAccess.Read);
int m;
int i = getindex(c, out m);
Console.Write(i + ":" + m + " ");
int turns = 0;
int time = 0;
for (;;)
{
i = getindex(c, out m);
// Console.Write("("+m+")");
file.Seek(i, SeekOrigin.Begin);
int b = file.ReadByte();
if (b <= 0)
{
if (c.GetCornerTwistIndex() != 0 || c.GetEdgeFlipIndex() != 0 || c.GetMiddleEdgeDistributionIndex()!=0)
{
Console.WriteLine("Phase 1 leads to unfinished cube");
return -1;
}
break; // no more moves - finish operation
}
int a = Cube.sym_actions[m].IndexOf((char)b);
turns++;
time += Cube.time_actions[a];
histogram[a]++;
Console.Write(Cube.sym_actions[0][a]);
c.DoReverseAction(a);
if (turns==35)
{
Console.WriteLine("Not finding solution...");
}
}
// Console.Write(" ("+turns + "/"+time+")");
file.Close();
return time;
}
public static int getindex(Cube c, out int symtype)
{
int t = c.GetCornerTwistIndex();
int tg = twistSymGroup[t];
int e = c.GetEdgeFlipIndex();
int d = c.GetMiddleEdgeDistributionIndex();
int es = int.MaxValue;
int ds = int.MaxValue;
symtype = -1;
for (int s=0; s<4; s++)
{
if (symGroupMembers[tg][s]==t)
{
int etmp = symEdgeFlipIndex[e][s];
int dtmp = symMiddleEdgeDistributionIndex[d][s];
if ( (etmp < es) || (etmp==es && dtmp<ds) )
{
es = etmp;
ds = dtmp;
symtype = s;
}
}
}
return tg + 594 * (es + 2048 * ds);
}
