static void Main(string[] args)
{
GenerateMagics(
"rook",
MagicBitboardFactory.GenerateRookOccupancyBitboards(),
MagicBitboardFactory.RookOffsets,
"rook.txt");
}
public void CalculatesCorrectly()
{
var bitboards = MagicBitboardFactory.GenerateRookOccupancyBitboards();
Assert.AreEqual(0x8080808080807EUL, bitboards[7]);
Assert.AreEqual(0x404047A040400UL, bitboards[26]);
Assert.AreEqual(0x17E0101010100UL, bitboards[40]);
Assert.AreEqual(0x6E10101010101000UL, bitboards[60]);
}
public void CalculatesCorrectly()
{
int[] expected = { 0, 2, 6, 8, 9, 13, 16 };
int[] actual = MagicBitboardFactory.GenerateOffsets(0x12345UL);
TestUtils.TestArrayEquality(expected, actual);
expected = new int[] { 32, 37, 40, 41, 46 };
actual = MagicBitboardFactory.GenerateOffsets(0x432100000000UL);
TestUtils.TestArrayEquality(expected, actual);
}
public void CaclulatesCorrectly()
{
Bitboard[] bitboards = MagicBitboardFactory.GenerateBishopOccupancyBitboards();
Assert.AreEqual(0x40201008040200UL, bitboards[0]);
Assert.AreEqual(0x40201008040200UL, bitboards[63]);
Assert.AreEqual(0x28440200000000UL, bitboards[60]);
Assert.AreEqual(0x40221400142200UL, bitboards[27]);
Assert.AreEqual(0x4020100A0000UL, bitboards[10]);
}
static Bitboard GenerateReducedMagic(int square, bool bishop)
{
Bitboard occBB = Bitboards.RookPremasks[square];
if (bishop)
{
occBB = Bitboards.BishopPremasks[square];
}
Bitboard[] permutations = MagicBitboardFactory.GeneratePermutations(occBB);
Bitboard[] moves = MagicBitboardFactory.GenerateMovesFromPermutations(
square,
permutations,
bishop ? MagicBitboardFactory.BishopOffsets : MagicBitboardFactory.RookOffsets);
return(MagicBitboardFactory.GenerateMagicNumber(permutations, moves, 1));
}
static void GenerateMagics(string piece, Bitboard[] occupancyBBs, int[] offsets, string filename)
{
Bitboard[] result = new Bitboard[64];
DateTime start = DateTime.Now;
for (int i = 0; i < 64; i++)
{
Console.Write($"Generating {piece} magic for square {i}...");
var permutations = MagicBitboardFactory.GeneratePermutations(occupancyBBs[i]);
var moves = MagicBitboardFactory.GenerateMovesFromPermutations(i, permutations, offsets);
result[i] = MagicBitboardFactory.GenerateMagicNumber(permutations, moves);
Console.WriteLine("Done");
}
Console.WriteLine($"Total Elapsed Time: {(DateTime.Now - start).ToString()}");
if (File.Exists(filename))
{
File.Delete(filename);
}
MagicBitboardFactory.WriteMagicsToFile(filename, result);
}
public void CalculatesCorrectly()
{
Bitboard[] expected = { 0, 1, 2, 3, 0x0000008000000000UL, 0x0000008000000001UL, 0x0000008000000002UL, 0x0000008000000003UL };
Bitboard[] actual = MagicBitboardFactory.GeneratePermutations(0x8000000003UL);
TestUtils.TestArrayEquality(expected, actual);
}
