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Tools.cs
355 lines (329 loc) · 15.4 KB
/
Tools.cs
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using System;
namespace ChessBitboard{
public class Tools{
public static string move2Algebra(string move){ // convert coordinates to algebraic notation
string moveString="";
if(move[3] == 'P'){
moveString = moveString +""+ (char)(move[0]+49);
moveString = moveString +""+ (char)(move[1]+49);
moveString = moveString + ""+move[2];
moveString = moveString + ""+move[3];
return moveString;
}
moveString = moveString + ""+(char)(move[1]+49);
moveString = moveString + ""+('8'- (move[0]));
moveString = moveString + ""+(char)(move[3]+49);
moveString = moveString + ""+('8' - (move[2]));
return moveString;
}
public static string algebra2Move(string move){
string moveString="";
if((move.Length > 4 && move[4] == 'e') && (IsBetweenAandH(move[0]) && IsBetweenAandH(move[2]))){
moveString = "";
moveString = moveString + ""+(char)(move[0]-49);
moveString = moveString + ""+(char)(move[2]-49);
moveString = moveString + "W";
moveString = moveString + ""+char.ToUpper(move[4]);
return moveString;
}
if((move.Length > 5 && move[4] == 'p') && (IsBetweenAandH(move[0]) && IsBetweenAandH(move[2]))){
moveString = "";
moveString = moveString + ""+(char)(move[0]-49);
moveString = moveString + ""+(char)(move[2]-49);
moveString = moveString + ""+char.ToUpper(move[5]);
moveString = moveString + ""+char.ToUpper(move[4]);
return moveString;
}
if(IsBetweenAandH(move[0]) && IsBetweenAandH(move[2])){
moveString = moveString + ""+('8' - (move[1]));
moveString = moveString + ""+(char)(move[0]-49);
moveString = moveString + ""+('8' - (move[3]));
moveString = moveString + ""+(char)(move[2]-49);
return moveString;
}
return "7777";
}
public static bool IsBetweenAandH(char c)
{
if(c >= 'a' && c <= 'h'){
return true;
}else{
return false;
}
}
public static int trailingZerosRight(UInt64 move){
if (((move)&1)==1) return 0 ;
if (((move >>1 )&1)==1) return 1 ;
if (((move >>2 )&1)==1) return 2 ;
if (((move >>3 )&1)==1) return 3 ;
if (((move >>4 )&1)==1) return 4 ;
if (((move >>5 )&1)==1) return 5 ;
if (((move >>6 )&1)==1) return 6 ;
if (((move >>7 )&1)==1) return 7 ;
if (((move >>8 )&1)==1) return 8 ;
if (((move >>9 )&1)==1) return 9 ;
if (((move >>10)&1)==1) return 10;
if (((move >>11)&1)==1) return 11;
if (((move >>12)&1)==1) return 12;
if (((move >>13)&1)==1) return 13;
if (((move >>14)&1)==1) return 14;
if (((move >>15)&1)==1) return 15;
if (((move >>16)&1)==1) return 16;
if (((move >>17)&1)==1) return 17;
if (((move >>18)&1)==1) return 18;
if (((move >>19)&1)==1) return 19;
if (((move >>20)&1)==1) return 20;
if (((move >>21)&1)==1) return 21;
if (((move >>22)&1)==1) return 22;
if (((move >>23)&1)==1) return 23;
if (((move >>24)&1)==1) return 24;
if (((move >>25)&1)==1) return 25;
if (((move >>26)&1)==1) return 26;
if (((move >>27)&1)==1) return 27;
if (((move >>28)&1)==1) return 28;
if (((move >>29)&1)==1) return 29;
if (((move >>30)&1)==1) return 30;
if (((move >>31)&1)==1) return 31;
if (((move >>32)&1)==1) return 32;
if (((move >>33)&1)==1) return 33;
if (((move >>34)&1)==1) return 34;
if (((move >>35)&1)==1) return 35;
if (((move >>36)&1)==1) return 36;
if (((move >>37)&1)==1) return 37;
if (((move >>38)&1)==1) return 38;
if (((move >>39)&1)==1) return 39;
if (((move >>40)&1)==1) return 40;
if (((move >>41)&1)==1) return 41;
if (((move >>42)&1)==1) return 42;
if (((move >>43)&1)==1) return 43;
if (((move >>44)&1)==1) return 44;
if (((move >>45)&1)==1) return 45;
if (((move >>46)&1)==1) return 46;
if (((move >>47)&1)==1) return 47;
if (((move >>48)&1)==1) return 48;
if (((move >>49)&1)==1) return 49;
if (((move >>50)&1)==1) return 50;
if (((move >>51)&1)==1) return 51;
if (((move >>52)&1)==1) return 52;
if (((move >>53)&1)==1) return 53;
if (((move >>54)&1)==1) return 54;
if (((move >>55)&1)==1) return 55;
if (((move >>56)&1)==1) return 56;
if (((move >>57)&1)==1) return 57;
if (((move >>58)&1)==1) return 58;
if (((move >>59)&1)==1) return 59;
if (((move >>60)&1)==1) return 60;
if (((move >>61)&1)==1) return 61;
if (((move >>62)&1)==1) return 62;
if (((move >>63)&1)==1) return 63;
return 64;
}
// 6.3 seconds faster on 5 ply deep search than doing with for loop
public static UInt64 reverseBit(UInt64 bitboard){
UInt64 reverse = 0;
if (((bitboard)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>1 )&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>2 )&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>3 )&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>4 )&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>5 )&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>6 )&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>7 )&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>8 )&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>9 )&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>10)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>11)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>12)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>13)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>14)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>15)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>16)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>17)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>18)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>19)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>20)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>21)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>22)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>23)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>24)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>25)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>26)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>27)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>28)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>29)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>30)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>31)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>32)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>33)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>34)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>35)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>36)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>37)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>38)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>39)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>40)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>41)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>42)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>43)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>44)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>45)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>46)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>47)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>48)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>49)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>50)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>51)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>52)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>53)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>54)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>55)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>56)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>57)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>58)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>59)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>60)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>61)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>62)&1)==1) { reverse = reverse ^ 1; }
reverse = reverse << 1;
if (((bitboard >>63)&1)==1) { reverse = reverse ^ 1; }
return reverse;
}
public static char unicode2ShortHand(char c){
switch(c){
case BoardGeneration.bQC:
return 'q';
case BoardGeneration.wQC:
return 'Q';
case BoardGeneration.bBC:
return 'b';
case BoardGeneration.bRC:
return 'r';
case BoardGeneration.bNC:
return 'n';
case BoardGeneration.wRC:
return 'R';
case BoardGeneration.wBC:
return 'B';
case BoardGeneration.wNC:
return 'N';
default:
return '0';
}
}
public static bool ArrC(char[] arr1, char[] arr2){
if( arr1[0] != arr2[0] ) { return false;}
if( arr1[1] != arr2[1] ) { return false;}
if( arr1[2] != arr2[2] ) { return false;}
if( arr1[3] != arr2[3] ) { return false;}
return true;
}
public static bool IsCharDigit(char c){
return ((c >= '0') && (c <= '9'));
}
public static int Abs(int i){
return ((i + (i >> 31)) ^ (i >> 31));
}
public static char[] CharCombine(char c0, char c1, char c2, char c3){
char[] c = new char[4];
c[0] = c0;
c[1] = c1;
c[2] = c2;
c[3] = c3;
return c;
}
public static UInt64 reverseBitSingle(UInt64 bitboard){
// almost twice as fast as other method but only for single bit
// almost 3 seconds faster at perft search depth of 5 almost 10% faster
UInt64 reverse = 1;
int shift = Tools.trailingZerosRight(bitboard);
reverse = reverse << (63-shift);
return reverse;
}
public static UInt64 reverseBitxx(UInt64 bitboard){
// is doing XOR on every last 0 faster checking a flag and skip the XOR and just shift the rest?
UInt64 reverse = 0;
for(int i = 0; i < 64; i++){
reverse = reverse << 1;
if(((bitboard & 1) == 1)){
reverse = reverse ^ 1;
}
bitboard = bitboard >> 1;
}
return reverse;
}
public static int trailingZerosLeft(UInt64 move){
for(int i = 0; i<64; i++){
if (((move <<i)&0x8000000000000000)==0x8000000000000000) return i;
}
return 0;
}
public static int trailingZerosRightLoop(UInt64 move){
for(int i = 0; i<64; i++){
if (((move >>i)&1)==1) return i;
}
return 64;
}
}
}