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Commit 6cd5432c authored by Radia EL HAMDOUNI's avatar Radia EL HAMDOUNI
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Merge branch 'Multiple_files' into 'master' 

Multiple files

See merge request !1
parents 5b69f86c 8c8d5d58
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board.h 0 → 100644
View file @ 6cd5432c
/* ---------------------------------------------------------
============================================================
Chess Engine in C Language
==========================
8 |_|#|_|#|_|#|_|#|
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6 |_|#|_|#|_|#|_|#|
5 |#|_|#|_|#|_|#|_|
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3 |#|_|#|_|#|_|#|_|
2 |_|#|_|#|_|#|_|#|
1 |#|_|#|_|#|_|#|_|
a b c d e f g h
-----------------------------------------------------------
BY
Radia EL HAMDOUNI
MLOD - Mini-Projet
====================================================
\---------------------------------------------------*/
/************************************************************\
;------------------------------------------------------------;
; Chess engine in C ;
; ;
;------------------------------------------------------------;
; TODO : ;
; [x] Bitboard representation ;
; [x] Moving pieces ;
; [] Fen implementation ;
; [] Move generator ;
; [] Search ;
; [] Evaluation ;
\************************************************************/
/*
Compile and run the program
$gcc chess_engine.c -o chess_engine && ./chess_engine
*/
// libraries
#include<stdio.h>
/* Piece encoding */
// for the mapping
enum pieces{
e, // empty square
P, // white pond
N, // white knight
B, // white bishop
R, // white rook
Q, // white queen
K, // white king
p, // black pond
n, // black knight
b, // black bishop
r, // black rook
q, // black queen
k, // black king
o, // board limit
};
// unicode pieces
char* chess_pieces[] = {" . "," ♙ "," ♘ "," ♗ "," ♖ "," ♕ "," ♔ "," ♟︎ "," ♞ "," ♝ "," ♜ "," ♛ "," ♚ "};
// character indexes
int char_pieces[] = {
['P'] = P,
['N'] = N,
['B'] = B,
['R'] = R,
['Q'] = Q,
['K'] = K,
['p'] = p,
['n'] = n,
['b'] = b,
['r'] = r,
['q'] = q,
['k'] = k,
};
// chess board representation 0x88
int board[128] = {
r , n , b , q , k , b , n , r , o , o , o , o , o , o , o , o ,
p , p , p , p , p , p , p , p , o , o , o , o , o , o , o , o ,
e , e , e , e , e , e , e , e , o , o , o , o , o , o , o , o ,
e , e , e , e , e , e , e , e , o , o , o , o , o , o , o , o ,
e , e , e , e , e , e , e , e , o , o , o , o , o , o , o , o ,
e , e , e , e , e , e , e , e , o , o , o , o , o , o , o , o ,
P , P , P , P , P , P , P , P , o , o , o , o , o , o , o , o ,
R , N , B , Q , K , B , N , R , o , o , o , o , o , o , o , o ,
};
// mapping the board to algebraic notation
char *algebraic_board[] = {
"a8", "b8", "c8", "d8", "e8", "f8", "g8", "h8", "i8", "j8", "k8", "l8", "m8", "n8", "o8", "p8",
"a7", "b7", "c7", "d7", "e7", "f7", "g7", "h7", "i7", "j7", "k7", "l7", "m7", "n7", "o7", "p7",
"a6", "b6", "c6", "d6", "e6", "f6", "g6", "h6", "i6", "j6", "k6", "l6", "m6", "n6", "o6", "p6",
"a5", "b5", "c5", "d5", "e5", "f5", "g5", "h5", "i5", "j5", "k5", "l5", "m5", "n5", "o5", "p5",
"a4", "b4", "c4", "d4", "e4", "f4", "g4", "h4", "i4", "j4", "k4", "l4", "m4", "n4", "o4", "p4",
"a3", "b3", "c3", "d3", "e3", "f3", "g3", "h3", "i3", "j3", "k3", "l3", "m3", "n3", "o3", "p3",
"a2", "b2", "c2", "d2", "e2", "f2", "g2", "h2", "i2", "j2", "k2", "l2", "m2", "n2", "o2", "p2",
"a1", "b1", "c1", "d1", "e1", "f1", "g1", "h1", "i1", "j1", "k1", "l1", "m1", "n1", "o1", "p1"
};
// valid squares in algebraic notation
enum squares {
a8 = 0, b8, c8, d8, e8, f8, g8, h8,
a7 = 16, b7, c7, d7, e7, f7, g7, h7,
a6 = 32, b6, c6, d6, e6, f6, g6, h6,
a5 = 48, b5, c5, d5, e5, f5, g5, h5,
a4 = 64, b4, c4, d4, e4, f4, g4, h4,
a3 = 80, b3, c3, d3, e3, f3, g3, h3,
a2 = 96, b2, c2, d2, e2, f2, g2, h2,
a1 = 112, b1, c1, d1, e1, f1, g1, h1
};
chess_engine.c
View file @ 6cd5432c
/* ---------------------------------------------------------
============================================================
Chess Engine in C Language
==========================
8 |_|#|_|#|_|#|_|#|
7 |#|_|#|_|#|_|#|_|
6 |_|#|_|#|_|#|_|#|
5 |#|_|#|_|#|_|#|_|
4 |_|#|_|#|_|#|_|#|
3 |#|_|#|_|#|_|#|_|
2 |_|#|_|#|_|#|_|#|
1 |#|_|#|_|#|_|#|_|
a b c d e f g h
-----------------------------------------------------------
BY
Radia EL HAMDOUNI
MLOD - Mini-Projet
====================================================
---------------------------------------------------*/
/*
Compile and run the program
$gcc chess_engine.c -o chess_engine && ./chess_engine
*/
// Libraries // Libraries
#include<stdio.h> #include<stdio.h>
// files
// Upper Case letters => White pieces . #include "board.h"
// Lower Case letters => Black pieces . #include "fen.c"
// for the mapping
enum{
e, // empty square
P, // white pond
N, // white knight
B, // white bishop
R, // white rook
Q, // white queen
K, // white king
p, // black pond
n, // black knight
b, // black bishop
r, // black rook
q, // black queen
k, // black king
o, // board limit
};
// unicode pieces
char* chess_pieces[] = {" . "," ♙ "," ♘ "," ♗ "," ♖ "," ♕ "," ♔ "," ♟︎ "," ♞ "," ♝ "," ♜ "," ♛ "," ♚ "};
// chess board representation 0x88
int board[128] = {
r , n , b , q , k , b , n , r , o , o , o , o , o , o , o , o ,
p , p , p , p , p , p , p , p , o , o , o , o , o , o , o , o ,
e , e , e , e , e , e , e , e , o , o , o , o , o , o , o , o ,
e , e , e , e , e , e , e , e , o , o , o , o , o , o , o , o ,
e , e , e , e , e , e , e , e , o , o , o , o , o , o , o , o ,
e , e , e , e , e , e , e , e , o , o , o , o , o , o , o , o ,
P , P , P , P , P , P , P , P , o , o , o , o , o , o , o , o ,
R , N , B , Q , K , B , N , R , o , o , o , o , o , o , o , o ,
};
// Print the board to the console // Print the board to the console
void show_board(){ void show_board(){
...@@ -92,7 +19,6 @@ void show_board(){ ...@@ -92,7 +19,6 @@ void show_board(){
if(j == 0){ if(j == 0){
printf("%d " , 8-i); // print ranks printf("%d " , 8-i); // print ranks
} }
// print the board's valid quares // print the board's valid quares
...@@ -100,8 +26,6 @@ void show_board(){ ...@@ -100,8 +26,6 @@ void show_board(){
printf("%s" ,chess_pieces[board[square]]); printf("%s" ,chess_pieces[board[square]]);
} }
} }
printf("\n"); printf("\n");
} }
...@@ -110,12 +34,35 @@ void show_board(){ ...@@ -110,12 +34,35 @@ void show_board(){
} }
// reset the board => remove all the pieces
void reset(){
for(int i = 0 ; i<8 ; i++){//loop over the ranks
for(int j=0;j<16;j++ ){// loop over the files
int square = 16 * i + j;
// Main // print the board's valid quares
int main(){ if(!(square & 0x88)){
board[square] = e;
}
}
}
}
// Main
int main(){
// moving chess pieces
board[e2] = e;
show_board();
board[e4] = p;
show_board(); show_board();
reset();
show_board();
printf("\n");
return 1; return 1;
} }
...@@ -135,3 +82,4 @@ int main(){ ...@@ -135,3 +82,4 @@ int main(){
fen.c 0 → 100644
View file @ 6cd5432c
#include<stdio.h>
int side;
void fen(char *my_fen){
// first reset the board
reset();
for(int i = 0 ; i<8 ; i++){ //loop over the ranks
for(int j=0;j<16;j++ ){ // loop over the files
int square = 16 * i + j;
// first part of fen
if(!(square & 0x88)){
if((*my_fen >= 'a' && *my_fen <= 'z')|| (*my_fen >= 'A' && *my_fen <= 'Z') ){
board[square] = char_pieces[*my_fen];
*my_fen++;
}
if(*my_fen >= '0' && *my_fen <= '8'){
j += *my_fen-'0';
*my_fen++;
}
if(*my_fen=='/'){
*my_fen++;
}
}
}
}
*my_fen++;
// second part of FEN
if(*my_fen == 'w'){
side = white;
}
else{
side = black;
}
show_board();
// castling
// en passant
}
legal_move.c 0 → 100644
View file @ 6cd5432c
/* Move generation */
int legal_move(int sq, int side){
if(!side) // white side
{
// moving pawns
if( (sq+17 & 0x88)==0 && board[sq+17] == P )
{
return 1;
}
if( (sq+15 & 0x88)==0 && board[sq+15] == P )
{
return 1;
}
}
else{
if( (sq-17 & 0x88)==0 && board[sq-17] == p )
{
return 1;
}
if( (sq-15 & 0x88)==0 && board[sq-15] == p )
{
return 1;
}
}
// moving knights
for (int i = 0; i < 8; i++)
{
int target_square = sq + moves_knight[i];
int target_piece = board[target_square];
if (!(target_square & 0x88))
{
if (!side ? target_piece == N : target_piece == n)
return 1;
}
}
// moving bishop
for (int i = 0; i < 4; i++)
{
int target_square = sq + moves_bishop[i];
while (!(target_square & 0x88))
{
int target_piece = board[target_square];
if (!side ? (target_piece == B || target_piece == Q) : (target_piece == b || target_piece == q))
return 1;
if (target_piece)
break;
target_square += moves_bishop[i];
}
}
// Moving king
for (int i = 0; i < 8; i++)
{
int target_square = sq + moves_king[i];
int target_piece = board[target_square];
if (!(target_square & 0x88))
{
if (!side ? target_piece == K : target_piece == k)
return 1;
}
}
// moving the queen and the rook
for (int i = 0; i < 4; i++)
{
int target_square = sq + moves_rook[i];
while (!(target_square & 0x88))
{
int target_piece = board[target_square];
if (!side ? (target_piece == R || target_piece == Q) : (target_piece == r || target_piece == q))
return 1;
if (target_piece)
break;
target_square += moves_rook[i];
}
}
return 0;
}
void print_possible_moves(int side){
for(int i = 0 ; i<8 ; i++){//loop over the ranks
for(int j=0;j<16;j++ ){// loop over the files
int square = 16 * i + j;
if(j == 0){
printf("%d " , 8-i); // print ranks
}
// print the board's valid quares
if(!(square & 0x88)){
printf(" %c " ,legal_move(square,side) ? 'x' : '.');
}
}
printf("\n");
}
printf("\n a b c d e f g h \n\n\n"); // print files
}
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