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#include <stdlib.h>
#include <stdio.h>
#include "board.h"
#include "coordinate.h"
#include "move.h"
#include "piece.h"
static Board _setup_colors(Board b) {
short i, j;
for (i = 0; i < SIZE; i++)
for (j = 0; j < SIZE; j++)
if (i % 2)
if (j % 2)
b[i][j].color = BLACK;
else
b[i][j].color = WHITE;
else
if (j % 2)
b[i][j].color = WHITE;
else
b[i][j].color = BLACK;
return b;
}
static Board _set_new_piece(Board b, Coord c, Color color, PieceType t) {
Square s = board_get_square(b, c);
s.piece = piece_new(color, t);
return board_set_square(b, c, s);
}
static Board _pawns(Board b) {
Coord c = coord_set_row(coord_null(), '2');
char col;
for (col = 'a'; col <= 'h'; col++)
_set_new_piece(b, coord_set_col(c, col), WHITE, PAWN);
c = coord_set_row(coord_null(), '7');
for (col = 'a'; col <= 'h'; col++)
_set_new_piece(b, coord_set_col(c, col), BLACK, PAWN);
return b;
}
static Board _rocks(Board b) {
_set_new_piece(b, coord_init("a1"), WHITE, ROCK);
_set_new_piece(b, coord_init("h1"), WHITE, ROCK);
_set_new_piece(b, coord_init("a8"), BLACK, ROCK);
_set_new_piece(b, coord_init("h8"), BLACK, ROCK);
return b;
}
static Board _knights(Board b) {
_set_new_piece(b, coord_init("b1"), WHITE, KNIGHT);
_set_new_piece(b, coord_init("g1"), WHITE, KNIGHT);
_set_new_piece(b, coord_init("b8"), BLACK, KNIGHT);
_set_new_piece(b, coord_init("g8"), BLACK, KNIGHT);
return b;
}
static Board _bishops(Board b) {
_set_new_piece(b, coord_init("c1"), WHITE, BISHOP);
_set_new_piece(b, coord_init("f1"), WHITE, BISHOP);
_set_new_piece(b, coord_init("c8"), BLACK, BISHOP);
_set_new_piece(b, coord_init("f8"), BLACK, BISHOP);
return b;
}
static Board _queens(Board b) {
_set_new_piece(b, coord_init("d1"), WHITE, QUEEN);
_set_new_piece(b, coord_init("d8"), BLACK, QUEEN);
return b;
}
static Board _kings(Board b) {
_set_new_piece(b, coord_init("e1"), WHITE, KING);
_set_new_piece(b, coord_init("e8"), BLACK, KING);
return b;
}
static Board _setup_pieces(Board b) {
return _pawns(_rocks(_knights(_bishops(_queens(_kings(b)))))); // :-)
}
static Board _initial_setup(Board b) {
return _setup_pieces(_setup_colors(b));
}
static short _from_col(char col) {
// col is a character between 'a' and 'h'
return col - 'a';
}
static short _from_row(char row) {
// row is an ASCII digit between '1' and '8'
return row - '1';
}
Board board_init() {
int i, j;
Board b = malloc(sizeof(Square*) * SIZE);
for (i = 0; i < SIZE; i++) {
b[i] = malloc(sizeof(Square) * SIZE);
for (j = 0; j < SIZE; j++)
b[i][j].piece = NULL;
}
return _initial_setup(b);
}
int board_delete(Board b) {
short i, j;
for (i = 0; i < SIZE; i++) {
for (j = 0; j < SIZE; j++)
if (b[i][j].piece != NULL)
free(b[i][j].piece);
free(b[i]);
}
free(b);
return 0;
}
Square board_get_square(Board b, Coord c) {
short x = _from_col(coord_get_col(c));
short y = _from_row(coord_get_row(c));
return b[x][y];
}
Board board_set_square(Board b, Coord c, Square s) {
short x = _from_col(coord_get_col(c));
short y = _from_row(coord_get_row(c));
b[x][y] = s;
return b;
}
Board board_make_move(Board b, Move m) {
/* Get piece from orig square coordinate */
Square s = board_get_square(b, move_get_orig(m));
Piece *p = s.piece;
/* Empty orig square */
s.piece = NULL;
board_set_square(b, move_get_orig(m), s);
/* Set piece on dest square */
s = board_get_square(b, move_get_dest(m));
s.piece = p;
board_set_square(b, move_get_dest(m), s);
return b;
}
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