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Add king_checked, fancify chess board.

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master
Tait Hoyem 5 years ago
parent 25ddada744
commit c563e611c1
5 changed files with 117 additions and 19 deletions
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110
src/chess.cpp
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@ -10,26 +10,50 @@
using namespace std;
void print_board(array<PieceType, 120> const& board){
void print_board(array<PieceType, 120> *board, vector<int> &highlighted_moves){
for (int i = 2; i < 10; ++i){
cout << 10-i << " |";
for (int j = 1; j < 9; ++j){
int ix = (i*10) + j;
int piece = board[ix];
int piece = (*board)[ix];
string piece_string = FANCY_CHESS_CHARS[piece];
string color = is_white(piece)?"White":"Black";
cout << color::rize(piece_string, color, "Default");
cout << " ";
string foreground_color = is_white(piece)?"White":"Black";
string background_color = "";
string modifier = "";
for (int move : highlighted_moves){
if (get_to_sq(move) == ix){
if (get_check_flag(move) == 1){
background_color = "Light Red";
} else if (get_captured_pc(move) != 0){
background_color = "Green";
// If a checkmate occors on this move
// Doesn't appear to work in practoce.
} else if (to_notation(move, board).find("#") != string::npos){
background_color = "White";
modifier = "Blink";
} else {
background_color = "Yellow";
}
}
}
cout << color::rize(" ", foreground_color, background_color, modifier);
cout << color::rize(piece_string, foreground_color, background_color, modifier);
cout << color::rize(" ", foreground_color, background_color, modifier);
}
cout << endl;
}
cout << "-------------------" << endl;
cout << " A B C D E F G H" << endl;
cout << "--------------------------" << endl;
cout << " A B C D E F G H" << endl;
}
// TODO: allow algebraic notation.
int main(){
cout << "Hit h for help!" << endl;
Color whos_turn = Color::WHITE;
array<PieceType, 120> my_board;
copy(DEFAULT_BOARD.begin(), DEFAULT_BOARD.end(),
@ -41,6 +65,9 @@ int main(){
int en_passant_square = 0;
int castle_perms = 0xF;
bool reset_en_passant = false;
vector<int> highlighted_moves = {};
while (true){
all_moves = {};
@ -49,8 +76,21 @@ int main(){
// Gets all moves for color who's turn it is.
get_all_moves_for_pieces(my_pieces, &my_board, &all_moves, en_passant_square, castle_perms);
cout << "Castle perms: " << castle_perms << endl;
print_board(my_board);
print_board(&my_board, highlighted_moves);
// If there are no moves. The game is over.
// If the king is ALSO in check, then the other team won!
if (all_moves.empty()){
if (king_checked(&my_board, whos_turn)){
string winning_team = rev_color(whos_turn)==Color::WHITE?"White":"Black";
cout << "GG! " << winning_team << " won!" << endl;
break;
} else {
cout << "Stalemate, too bad!" << endl;
break;
}
}
// Gets a string from cin called input
string input;
getline(cin, input);
@ -71,22 +111,58 @@ int main(){
if (input == "q"){
break;
} else if (input == "l"){
cout << "Listing moves: \n";
for (string notation : all_moves_notation){
cout << notation << " ";
}
cout << endl;
continue;
} else if (input == "c"){
highlighted_moves = {};
} else if (input == "h"){
cout << "Commands:" <<endl;
cout << " h for this help menu" << endl;
cout << " l to list all your moves" << endl;
cout << " l <position> to list all moves for a specific position." << endl;
cout << " these will be highlighted on the board with various colors" << endl;
cout << " Red: Checking move"<< endl;
cout << " Blue: capturing move" << endl;
cout << " Yellow: all other moves" << endl;
cout << " c to clear the highlights" << endl;
}
// If the input did not match any legal move.
if (!move_exec){
cout << "Invalid move!" << std::endl;
cout << "These are the only valid moves: ";
for (string notation : all_moves_notation){
cout << notation << " ";
int l_pos = input.find("l");
// If input starts with "l".
// It cannot equal only l because that case is taken care of above.
// And it continues to the next loop.
if (l_pos == 0){
string possible_position = input.substr(2, 2);
bool asking_for_specific_moves = false;
for (string pos : POSITION_STRING){
if(pos == possible_position){
asking_for_specific_moves = true;
}
}
// If input matches a position.
if (asking_for_specific_moves){
highlighted_moves = {};
for (int move : all_moves){
if (POSITION_STRING[get_from_sq(move)] == possible_position){
highlighted_moves.push_back(move);
cout << to_notation(move, &my_board) << " ";
}
}
cout << endl;
} else {
cout << "Invalid move!" << std::endl;
cout << "These are the only valid moves: ";
for (string notation : all_moves_notation){
cout << notation << " ";
}
cout << endl;
continue;
}
}
cout << endl;
continue;
// If the input did match a legal move.
} else {
int moving_from_pos = get_from_sq(move_to_exec);
@ -130,13 +206,13 @@ int main(){
reset_en_passant = false;
}
if (en_passant_square != 0){
cout << "En passant move at: " << POSITION_STRING[en_passant_square] << endl;
reset_en_passant = true;
}
// This reverses the whos_turn variable.
// and runs the move on the my_board variable.
my_board = dumb_move(move_to_exec, my_board);
whos_turn = rev_color(whos_turn);
highlighted_moves = {};
}
}
return 0;

14
src/constants.h
Unescape View File

@ -94,6 +94,20 @@ const std::array<PieceType, 120> DEFAULT_BOARD = {
INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,
INV,INV,INV,INV,INV,INV,INV,INV,INV,INV
};
const std::array<Color, 120> BOARD_COLORS = {
NO_COLOR,NO_COLOR,NO_COLOR,NO_COLOR,NO_COLOR,NO_COLOR,NO_COLOR,NO_COLOR,NO_COLOR,NO_COLOR,
NO_COLOR,NO_COLOR,NO_COLOR,NO_COLOR,NO_COLOR,NO_COLOR,NO_COLOR,NO_COLOR,NO_COLOR,NO_COLOR,
NO_COLOR, BLACK, WHITE, BLACK, WHITE, BLACK, WHITE, BLACK, WHITE, NO_COLOR,
NO_COLOR, WHITE, BLACK, WHITE, BLACK, WHITE, BLACK, WHITE, BLACK, NO_COLOR,
NO_COLOR, BLACK, WHITE, BLACK, WHITE, BLACK, WHITE, BLACK, WHITE, NO_COLOR,
NO_COLOR, WHITE, BLACK, WHITE, BLACK, WHITE, BLACK, WHITE, BLACK, NO_COLOR,
NO_COLOR, BLACK, WHITE, BLACK, WHITE, BLACK, WHITE, BLACK, WHITE, NO_COLOR,
NO_COLOR, WHITE, BLACK, WHITE, BLACK, WHITE, BLACK, WHITE, BLACK, NO_COLOR,
NO_COLOR, BLACK, WHITE, BLACK, WHITE, BLACK, WHITE, BLACK, WHITE, NO_COLOR,
NO_COLOR, WHITE, BLACK, WHITE, BLACK, WHITE, BLACK, WHITE, BLACK, NO_COLOR,
NO_COLOR,NO_COLOR,NO_COLOR,NO_COLOR,NO_COLOR,NO_COLOR,NO_COLOR,NO_COLOR,NO_COLOR,NO_COLOR,
NO_COLOR,NO_COLOR,NO_COLOR,NO_COLOR,NO_COLOR,NO_COLOR,NO_COLOR,NO_COLOR,NO_COLOR,NO_COLOR
};
const std::array<char, 13> CHESS_CHARS = {
' ',

6
src/functions.cpp
Unescape View File

@ -114,6 +114,12 @@ bool is_attacked(int pos, std::array<PieceType, 120> board){
return false;
}
bool king_checked(std::array<PieceType, 120> *board, Color color_of_king){
PieceType king = color_of_king==WHITE?W_KING:B_KING;
int king_pos = get_pos_of(king, board);
return is_attacked(king_pos, *board);
}
void add_checked_flags(PieceType pt, std::array<PieceType, 120> *board, std::vector<int> *pns){
PieceType other_king = is_white(pt)?PieceType::B_KING:PieceType::W_KING;
int other_king_pos = get_pos_of(other_king, board);

1
src/functions.h
Unescape View File

@ -58,6 +58,7 @@ std::array<PieceType, 120> dumb_move(int move, std::array<PieceType, 120> board)
// Decides if there this piece in position is in check
bool is_attacked(int pos, std::array<PieceType, 120> board);
bool king_checked(std::array<PieceType, 120> *board, Color king_color);
// Convert move (and board becuase notation needs more info than the move itself)
// ...into algbraic notation.

5
tests/main.cpp
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@ -291,8 +291,9 @@ TEST_CASE("Tests for check on square of queenside capture", "[get_all_moves]"){
CHECK(get_notations(cannot_queenside4, CASTLE_CHECK4_BOARD) == CASTLE_CHECK4_NOTATION);
}
TEST_CASE("Test that king check detection is working correctly.", "[is_attacked]"){
CHECK(is_attacked(ROOK_CHECK_KING_POS, ROOK_CHECK_MOVED_BOARD));
TEST_CASE("Test that king check detection is working correctly.", "[king_checked]"){
auto rook_check_moved_board = ROOK_CHECK_MOVED_BOARD;
CHECK(king_checked(&rook_check_moved_board, Color::WHITE));
}
TEST_CASE("Test for add_checked_flags is working correctly.", "[get_all_moves][add_checked_flags]"){

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