OMGeeky/hcsalmon1-Chess-Engine-Test
1
0
Fork 0
mirror of https://github.com/OMGeeky/hcsalmon1-Chess-Engine-Test.git synced 2025-12-26 16:27:23 +01:00
Code Issues Packages Projects Releases Wiki Activity

Create Perft_Func

Browse Source
This commit is contained in:
Coding with Tom
2025-01-20 16:57:11 +00:00
committed by GitHub
parent 9459cde45d
commit 04439b542b
1 changed files with 81 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

81
C#/Cleaner and slower version/Perft_Func Normal file
View File

@@ -0,0 +1,81 @@
using System;
using System.Collections.Generic;
namespace CEngineCopy
{
internal class Perft_Func
{
static int PerftFunctions(int depth, int ply)
{
//Same as move list, span to avoid heap allocation
Span<int> startingSquares = stackalloc int[50];
Span<int> targetSquares = stackalloc int[50];
Span<int> tags = stackalloc int[50];
Span<int> pieces = stackalloc int[50];
int moveCount = GenMoves.GetMoves(ref startingSquares, ref targetSquares, ref tags, ref pieces);
if (depth == 1)
{
return moveCount;
}
int nodes = 0, priorNodes;
int copyEp = Board.ep_global;
Span<bool> copy_castle = stackalloc bool[4];
copy_castle[0] = Board.castle_rights_global[0];
copy_castle[1] = Board.castle_rights_global[1];
copy_castle[2] = Board.castle_rights_global[2];
copy_castle[3] = Board.castle_rights_global[3];
for (int move_index = 0; move_index < moveCount; ++move_index)
{
int startingSquareCopy = startingSquares[move_index];
int targetSquareCopy = targetSquares[move_index];
int piece = pieces[move_index];
int tag = tags[move_index];
int captureIndex = Make_Move.MakeMove(startingSquareCopy, targetSquareCopy, tag, piece);
priorNodes = nodes;
nodes += PerftFunctions(depth - 1, ply + 1);
#region Unmakemove
Make_Move.UnmakeMove(startingSquareCopy, targetSquareCopy, piece, tag, captureIndex);
Board.castle_rights_global[0] = copy_castle[0];
Board.castle_rights_global[1] = copy_castle[1];
Board.castle_rights_global[2] = copy_castle[2];
Board.castle_rights_global[3] = copy_castle[3];
Board.ep_global = copyEp;
#endregion
//if (ply == 0)
//{
// PrintMoveNoNL(move_list[move_index]);
// Console.Write(": %llu\n", nodes - priorNodes);
//}
}
return nodes;
}
public static void RunPerftFunctions(int depth)
{
DateTime start = DateTime.Now;
int nodes = PerftFunctions(depth, 0);
DateTime end = DateTime.Now;
TimeSpan elapsed = end - start;
int elapsedTimeInMs = (int)elapsed.TotalMilliseconds; ;
Console.WriteLine($"Nodes: {nodes}");
Console.WriteLine($"Elapsed time: {elapsedTimeInMs}ms");
}
}
}