|
|
@ -154,6 +154,7 @@ void print_square(square* s) { |
|
|
|
printf("square: %d\n", s ? s->flags : 0); |
|
|
|
} |
|
|
|
|
|
|
|
// all pieces can't move to a square if another piece of the same color occupies it |
|
|
|
int validate_move(int x1, int y1, int x2, int y2) { |
|
|
|
if (board[x2][y2] && ((board[x1][y1]->flags | LIGHT) | DARK) == (((board[x2][y2]->flags | LIGHT) | DARK))) { |
|
|
|
return 0; |
|
|
@ -170,8 +171,8 @@ int validate_pawn_move(int x1, int y1, int x2, int y2) { |
|
|
|
int validate_knight_move(int x1, int y1, int x2, int y2) { return validate_move(x1, y1, x2, y2); } |
|
|
|
|
|
|
|
int validate_bishop_move(int x1, int y1, int x2, int y2) { |
|
|
|
if (+(x2 - x1) == +(y2 - y1)) { |
|
|
|
return 1; |
|
|
|
if (+(x2 - x1) != +(y2 - y1)) { |
|
|
|
return 0; |
|
|
|
} |
|
|
|
|
|
|
|
return validate_move(x1, y1, x2, y2); |
|
|
@ -196,9 +197,11 @@ int rank_to_board_index(char c) { |
|
|
|
|
|
|
|
typedef int (*piece_move_validator)(int, int, int, int); |
|
|
|
|
|
|
|
int turn = 1; |
|
|
|
|
|
|
|
int handle_move(char in[6]) { |
|
|
|
int ix1 = file_to_board_index(in[0]); |
|
|
|
int iy1 = rank_to_board_index(in[1]); |
|
|
|
int iy1 = rank_to_board_index(in[1]); |
|
|
|
int ix2 = file_to_board_index(in[2]); |
|
|
|
int iy2 = rank_to_board_index(in[3]); |
|
|
|
|
|
|
@ -208,14 +211,21 @@ int handle_move(char in[6]) { |
|
|
|
return -1; |
|
|
|
} |
|
|
|
|
|
|
|
if ((turn == 0) && (source->flags & DARK) == 0) { |
|
|
|
return -3; |
|
|
|
|
|
|
|
} else if ((turn == 1) && (source->flags & LIGHT) == 0) { |
|
|
|
return -4; |
|
|
|
} |
|
|
|
|
|
|
|
piece_move_validator validate = NULL; |
|
|
|
switch ((source->flags & ~LIGHT) & ~DARK) { |
|
|
|
case PAWN: validate = validate_pawn_move; break; |
|
|
|
case KNIGHT: validate = validate_knight_move; break; |
|
|
|
case BISHOP: validate = validate_bishop_move; break; |
|
|
|
case ROOK: validate = validate_rook_move; break; |
|
|
|
case QUEEN: validate = validate_queen_move; break; |
|
|
|
case KING: validate = validate_king_move; break; |
|
|
|
case PAWN: validate = validate_pawn_move; break; |
|
|
|
case KNIGHT: validate = validate_knight_move; break; |
|
|
|
case BISHOP: validate = validate_bishop_move; break; |
|
|
|
case ROOK: validate = validate_rook_move; break; |
|
|
|
case QUEEN: validate = validate_queen_move; break; |
|
|
|
case KING: validate = validate_king_move; break; |
|
|
|
} |
|
|
|
|
|
|
|
if (!validate(ix1, iy1, ix2, iy2)) { |
|
|
@ -273,7 +283,9 @@ int main(void) { |
|
|
|
|
|
|
|
switch (handle_move(in)) { |
|
|
|
case -1: printf("\tthere isn't a piece on that square!\n"); continue; |
|
|
|
case -2: printf("\tyou have a piece where ur tryna go\n"); continue; |
|
|
|
case -2: printf("\tinvalid move\n"); continue; |
|
|
|
case -3: case -4: printf("\tnot your turn."); continue; |
|
|
|
default: turn = !turn; break; |
|
|
|
} |
|
|
|
|
|
|
|
} while (1); |
|
|
|