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Board.cpp
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Board.cpp
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#include "Board.hpp"
#include "Player.hpp"
using namespace std;
Coords::Coords ( int x1_, int y1_, int x2_, int y2_ ) {
x1 = x1_;
y1 = y1_;
x2 = x2_;
y2 = y2_;
}
bool Coords::operator!= ( const Coords &B ) {
if ( this -> x1 != B.x1 ||
this -> y1 != B.y1 ||
this -> x2 != B.x2 ||
this -> y2 != B.y2 )
return true;
return false;
}
// Moves
Move::Move( int x1, int y1, int x2, int y2 ) {
coords.emplace_back( x1, y1, x2, y2 );
}
Move::Move( Coords c ) {
coords.push_back( c );
}
void Move::add( Coords c ) {
coords.insert( coords.begin(), c );
}
bool Move::operator== ( const Move &B ) {
if ( this -> coords.size() != B.coords.size() )
return false;
else
for ( unsigned int i = 0; i < coords.size(); i++ )
if ( this -> coords[i] != B.coords[i] )
return false;
return true;
}
Board::Board(){
// Simax, what had to be done, it's done
// modify code
player1(Player::YELLOW);
player2(Player::WHITE);
initBoard();
};
int Board::load ()
{
std::cout<<"loading "<<std::endl;
// ifstream input_file("data.dat", ios::binary);
// input_file.read((char*)&_board, sizeof(_board));
// input_file.close();
// _board = loadfromfile( );
for ( int i = 0; i < 8; i++ ){
for ( int j = 0; j < 8; j++ )
std::cout<<_board._cell[i][j]<<' ' ;
std::cout<<std::endl;
}
std::cout<<_board._currentPlayer;
std::cout<<_board._mode;
std::cout <<"it was in load just after fetching from file"<<std::endl;
std::cout<<"loading"<<std::endl;
for ( int i = 0; i < 8; i++ )
for ( int j = 0; j < 8; j++ )
cell[i][j].setTYPE((TYPE)_board._cell[i][j]);
if (_board._currentPlayer==(int)player1.getcolour())
currentPlayer=player1;
else currentPlayer=player2;
//for debugging
for ( int i = 0; i < 8; i++ ){
for ( int j = 0; j < 8; j++ )
std::cout<<cell[i][j].getTYPE()<<' ' ;
std::cout<<std::endl;
}
std::cout<<currentPlayer.getcolour();
std::cout<<mode;
return _board._mode; //board mode is set out in the gamestate externally so no need to assign to mode
}
void Board::save()
{
std::cout<<"i am save function"<<std::endl;
std::cout<<"saving"<<std::endl;
// ofstream output_file("game.dat", ios::binary);
for ( int i = 0; i < 8; i++ )
for ( int j = 0; j < 8; j++ )
_board._cell[i][j]=(int)cell[i][j].getTYPE();
_board._currentPlayer=(int)currentPlayer.getcolour();
_board._mode=mode;
// savetofile(_board);
//for debugging
for ( int i = 0; i < 8; i++ ){
for ( int j = 0; j < 8; j++ )
std::cout<<_board._cell[i][j]<<' ' ;
std::cout<<std::endl;
}
std::cout<<_board._currentPlayer;
std::cout<<_board._mode;
// ofstream output_file("data.dat", ios::binary);
// output_file.write((char*)&_board, sizeof(_board));
// output_file.close();
}
void Board::initBoard(){
for ( int i = 0; i < 8; i++ ) {
for ( int j = 0; j < 8; j++ ) {
if ( i%2 != j%2 ) {
if ( i < 3 )
cell[i][j].setTYPE( WHITE_PAWN);
else if ( i > 4 )
cell[i][j].setTYPE(YELLOW_PAWN);
}
}
}
// cell[0][7].setTYPE(WHITE_PAWN);
// cell[1][6].setTYPE(YELLOW_PAWN);
// cell[7][0].setTYPE(WHITE_PAWN);
// // cell[6][1].setTYPE(YELLOW_PAWN);
}
std::ostream& operator<<(std::ostream& out, const Board &board){
for(int i=0; i< 8; i++){
for( int j=0; j<8; j++ ){
const char* s = 0;
#define PROCESS_VAL(p) case(p): s = #p; break;
switch(board.cell[i][j].getTYPE()){
PROCESS_VAL(EMPTY);
PROCESS_VAL(WHITE_PAWN);
PROCESS_VAL(WHITE_KING);
PROCESS_VAL(YELLOW_PAWN);
PROCESS_VAL(YELLOW_KING);
}
#undef PROCESS_VAL
out << s << ", ";
}
out << std::endl << std::endl;
}
out << "========== Board State ==================" << std::endl;
return out;
}
void Board::setFirstPlayer(int col)
{
if (col==player1.getcolour())
currentPlayer=player1;
else currentPlayer=player2;
}
bool Board::selectCell(int x, int y)
{
if (cell[x][y].getTYPE()==currentPlayer.getkey(0) || cell[x][y].getTYPE() ==currentPlayer.getkey(1) )
{
xCoordSelectedCell=x;
yCoordSelectedCell=y;
// std::cout << "yes your turn"<< std::endl;
// _isMoving = true;
return 1;
}
else {
// std::cout << "not your turn"<< std::endl;
// _isMoving = false;
return 0;
}
}
void Board::alterTurn()
{
if (currentPlayer.getcolour()==player1.getcolour())
currentPlayer=player2;
else currentPlayer=player1;
}
void Board::setDisplacementvect(int newX,int newY)
{
Xdisplacement=newX-xCoordSelectedCell;
Ydisplacement= newY-yCoordSelectedCell;
}
bool Board::isValidMove(int newX, int newY)
{
setDisplacementvect(newX,newY);
int valid=0; //in general case because in king mode it can go anywhere no matter what
if ((xCoordSelectedCell+Xdisplacement)<0||(xCoordSelectedCell+Xdisplacement)>7||(yCoordSelectedCell+Ydisplacement)<0||(yCoordSelectedCell+Ydisplacement) >7)
return valid;
int newstate =cell[xCoordSelectedCell+Xdisplacement][yCoordSelectedCell+Ydisplacement].getTYPE();
int oldstate=cell[xCoordSelectedCell][yCoordSelectedCell].getTYPE();
if (checkcaptureavailable()&&abs(Xdisplacement)!=2)
return false;
if ((newstate==EMPTY) && ((abs(Xdisplacement)==1 && abs(Ydisplacement)==1)||(abs(Xdisplacement)==2 && abs(Ydisplacement)==2)))
{
if (oldstate==WHITE_PAWN && Xdisplacement>0)
{
valid=1;
if (Xdisplacement==2) //y maybe negative or positive
if (!(cell[xCoordSelectedCell+1][yCoordSelectedCell+Ydisplacement/2].getTYPE()==YELLOW_KING ||
cell[xCoordSelectedCell+Xdisplacement/2][yCoordSelectedCell+Ydisplacement/2].getTYPE()==YELLOW_PAWN))
valid=0;
}
if (oldstate == YELLOW_PAWN && Xdisplacement<0)
{
valid=1;
if (Xdisplacement==-2)
if (!(cell[xCoordSelectedCell-1][yCoordSelectedCell+Ydisplacement/2].getTYPE()==WHITE_KING ||
cell[xCoordSelectedCell-1][yCoordSelectedCell+Ydisplacement/2].getTYPE()==WHITE_PAWN))
valid=0;
}
if (oldstate== WHITE_KING || oldstate== YELLOW_KING)
{
valid=1;
if (abs (Ydisplacement)==2 && oldstate==WHITE_KING)
{if (!(cell[xCoordSelectedCell+Xdisplacement/2][yCoordSelectedCell+Ydisplacement/2].getTYPE()==YELLOW_KING ||
cell[xCoordSelectedCell+Xdisplacement/2][yCoordSelectedCell+Ydisplacement/2].getTYPE()==YELLOW_PAWN))
valid=0;
}
else if (abs (Ydisplacement)==2 && oldstate==YELLOW_KING)
{if (!(cell[xCoordSelectedCell+Xdisplacement/2][yCoordSelectedCell+Ydisplacement/2].getTYPE()==WHITE_KING ||
cell[xCoordSelectedCell+Xdisplacement/2][yCoordSelectedCell+Ydisplacement/2].getTYPE()==WHITE_PAWN))
valid=0;
}
}
}
if(validmultiplecheck)
{
if (xinmultiple!=xCoordSelectedCell||yinmultiple!=yCoordSelectedCell)
{
valid=0;
}
}
return valid;
}
bool Board::mover(int newX, int newY)
{ //no multiple moves here ...called after checking if valid moves or not
if (isValidMove(newX,newY))
{
cell[newX][newY].setTYPE(cell[xCoordSelectedCell][yCoordSelectedCell].getTYPE());
cell[xCoordSelectedCell][yCoordSelectedCell].setTYPE(EMPTY);
if (abs(Xdisplacement)==2) //x and y remain the same when the displacement is any move step move valid position
{
cell[xCoordSelectedCell+Xdisplacement/2][yCoordSelectedCell+Ydisplacement/2].setTYPE(EMPTY);
}
selectCell(newX,newY);
update();
isMoving=1;
return 1;
}
else {
isMoving=0;return 0;
}
}
void Board::update( )
{
updatevar=0;
if (cell[xCoordSelectedCell][yCoordSelectedCell].getTYPE()== WHITE_PAWN && xCoordSelectedCell==7)
{cell[xCoordSelectedCell][yCoordSelectedCell].setTYPE(WHITE_KING);
updatevar=1;
}
if (cell[xCoordSelectedCell][yCoordSelectedCell].getTYPE()== YELLOW_PAWN && xCoordSelectedCell==0)
{cell[xCoordSelectedCell][yCoordSelectedCell].setTYPE(YELLOW_KING);
updatevar=1;
}
}
bool Board::multipleMoveValid()
{
if (abs(Xdisplacement)==2)
{
if (cell[xCoordSelectedCell][yCoordSelectedCell].getTYPE()==WHITE_KING)
{
if ((cell[xCoordSelectedCell+1][yCoordSelectedCell-1].getTYPE()==YELLOW_KING && cell[xCoordSelectedCell+2][yCoordSelectedCell-2].getTYPE()==EMPTY &&(yCoordSelectedCell-2)>=0 &&(xCoordSelectedCell+2)<=7)
|| (cell[xCoordSelectedCell+1][yCoordSelectedCell-1].getTYPE()==YELLOW_PAWN && cell[xCoordSelectedCell+2][yCoordSelectedCell-2].getTYPE()==EMPTY &&(yCoordSelectedCell-2)>=0 &&(xCoordSelectedCell+2)<=7)||
(cell[xCoordSelectedCell+1][yCoordSelectedCell+1].getTYPE()==YELLOW_KING &&cell[xCoordSelectedCell+2][yCoordSelectedCell+2].getTYPE()==EMPTY &&(yCoordSelectedCell+2)<=7 &&(xCoordSelectedCell+2)<=7)||
(cell[xCoordSelectedCell+1][yCoordSelectedCell+1].getTYPE()==YELLOW_PAWN &&cell[xCoordSelectedCell+2][yCoordSelectedCell+2].getTYPE()==EMPTY &&(yCoordSelectedCell+2)<=7 &&(xCoordSelectedCell+2)<=7)||
(cell[xCoordSelectedCell-1][yCoordSelectedCell-1].getTYPE()==YELLOW_KING &&cell[xCoordSelectedCell-2][yCoordSelectedCell-2].getTYPE()==EMPTY &&(yCoordSelectedCell-2)>=0 &&(xCoordSelectedCell-2)>=0)||
(cell[xCoordSelectedCell-1][yCoordSelectedCell-1].getTYPE()==YELLOW_PAWN &&cell[xCoordSelectedCell-2][yCoordSelectedCell-2].getTYPE()==EMPTY &&(yCoordSelectedCell-2)>=0 &&(xCoordSelectedCell-2)>=0)||
(cell[xCoordSelectedCell-1][yCoordSelectedCell+1].getTYPE()==YELLOW_KING &&cell[xCoordSelectedCell-2][yCoordSelectedCell+2].getTYPE()==EMPTY &&(yCoordSelectedCell+2)<=7 &&(xCoordSelectedCell-2)>=0)||
(cell[xCoordSelectedCell-1][yCoordSelectedCell+1].getTYPE()==YELLOW_PAWN &&cell[xCoordSelectedCell-2][yCoordSelectedCell+2].getTYPE()==EMPTY &&(yCoordSelectedCell+2)<=7 &&(xCoordSelectedCell-2)>=0))
return true;
}
if (cell[xCoordSelectedCell][yCoordSelectedCell].getTYPE()==WHITE_PAWN )
{
if (xCoordSelectedCell==6 ||xCoordSelectedCell==7)
{
return false;
}
else
{
if ((cell[xCoordSelectedCell+1][yCoordSelectedCell-1].getTYPE()==YELLOW_KING &&cell[xCoordSelectedCell+2][yCoordSelectedCell-2].getTYPE()==EMPTY &&(yCoordSelectedCell-2)>=0)
|| (cell[xCoordSelectedCell+1][yCoordSelectedCell-1].getTYPE()==YELLOW_PAWN&&cell[xCoordSelectedCell+2][yCoordSelectedCell-2].getTYPE()==EMPTY &&(yCoordSelectedCell-2)>=0)
||(cell[xCoordSelectedCell+1][yCoordSelectedCell+1].getTYPE()==YELLOW_KING &&cell[xCoordSelectedCell+2][yCoordSelectedCell+2].getTYPE()==EMPTY &&(yCoordSelectedCell+2)<=7)
|| (cell[xCoordSelectedCell+1][yCoordSelectedCell+1].getTYPE()==YELLOW_PAWN &&cell[xCoordSelectedCell+2][yCoordSelectedCell+2].getTYPE()==EMPTY &&(yCoordSelectedCell+2)<=7))
return true;
}
}
if (cell[xCoordSelectedCell][yCoordSelectedCell].getTYPE()==YELLOW_KING)
{
if ((cell[xCoordSelectedCell+1][yCoordSelectedCell-1].getTYPE()==WHITE_KING &&cell[xCoordSelectedCell+2][yCoordSelectedCell-2].getTYPE()==EMPTY &&(yCoordSelectedCell-2)>=0 &&(xCoordSelectedCell+2)<=7)
|| (cell[xCoordSelectedCell+1][yCoordSelectedCell-1].getTYPE()==WHITE_PAWN&&cell[xCoordSelectedCell+2][yCoordSelectedCell-2].getTYPE()==EMPTY &&(yCoordSelectedCell-2)>=0 &&(xCoordSelectedCell+2)<=7)
|| (cell[xCoordSelectedCell+1][yCoordSelectedCell+1].getTYPE()==WHITE_KING &&cell[xCoordSelectedCell+2][yCoordSelectedCell+2].getTYPE()==EMPTY &&(yCoordSelectedCell+2)<=7 &&(xCoordSelectedCell+2)<=7)
|| (cell[xCoordSelectedCell+1][yCoordSelectedCell+1].getTYPE()==WHITE_PAWN && cell[xCoordSelectedCell+2][yCoordSelectedCell+2].getTYPE()==EMPTY &&(yCoordSelectedCell+2)<=7 &&(xCoordSelectedCell+2)<=7)
||(cell[xCoordSelectedCell-1][yCoordSelectedCell-1].getTYPE()==WHITE_KING && cell[xCoordSelectedCell-2][yCoordSelectedCell-2].getTYPE()==EMPTY &&(yCoordSelectedCell-2)>=0 &&(xCoordSelectedCell-2)>=0)
|| (cell[xCoordSelectedCell-1][yCoordSelectedCell-1].getTYPE()==WHITE_PAWN && cell[xCoordSelectedCell-2][yCoordSelectedCell-2].getTYPE()==EMPTY &&(yCoordSelectedCell-2)>=0 &&(xCoordSelectedCell-2)>=0)
||(cell[xCoordSelectedCell-1][yCoordSelectedCell+1].getTYPE()==WHITE_KING && cell[xCoordSelectedCell-2][yCoordSelectedCell+2].getTYPE()==EMPTY &&(yCoordSelectedCell+2)<=7 &&(xCoordSelectedCell-2)>=0)
|| (cell[xCoordSelectedCell-1][yCoordSelectedCell+1].getTYPE()==WHITE_PAWN && cell[xCoordSelectedCell-2][yCoordSelectedCell+2].getTYPE()==EMPTY &&(yCoordSelectedCell+2)<=7 &&(xCoordSelectedCell-2)>=0))
return true;
}
if (cell[xCoordSelectedCell][yCoordSelectedCell].getTYPE()==YELLOW_PAWN)
{
if (xCoordSelectedCell==0 ||xCoordSelectedCell==1)
{
return false;
}
else
{
if ((cell[xCoordSelectedCell-1][yCoordSelectedCell-1].getTYPE()==WHITE_KING && cell[xCoordSelectedCell-2][yCoordSelectedCell-2].getTYPE()==EMPTY &&(yCoordSelectedCell-2)>=0)
|| (cell[xCoordSelectedCell-1][yCoordSelectedCell-1].getTYPE()==WHITE_PAWN && cell[xCoordSelectedCell-2][yCoordSelectedCell-2].getTYPE()==EMPTY &&(yCoordSelectedCell-2)>=0)
||(cell[xCoordSelectedCell-1][yCoordSelectedCell+1].getTYPE()==WHITE_KING && cell[xCoordSelectedCell-2][yCoordSelectedCell+2].getTYPE()==EMPTY &&(yCoordSelectedCell+2)<=7)
|| (cell[xCoordSelectedCell-1][yCoordSelectedCell+1].getTYPE()==WHITE_PAWN && cell[xCoordSelectedCell-2][yCoordSelectedCell+2].getTYPE()==EMPTY &&(yCoordSelectedCell+2)<=7) )
return true;
}
}
}
return false;
}
bool Board::checkcaptureavailable()
{
for(int i=0;i<8;i++){
for(int j=0;j<8;j++){
if ((cell[i][j].getTYPE()==WHITE_PAWN || cell[i][j].getTYPE()==WHITE_KING)&&(currentPlayer.getcolour() ==Player::Colour::WHITE))
{
if (((cell[i+1][j-1].getTYPE()==YELLOW_PAWN||cell[i+1][j-1].getTYPE()==YELLOW_KING)&& cell[i+2][j-2].getTYPE()==EMPTY && (i+2)<=7&& (j-2)>=0)
||((cell[i+1][j+1].getTYPE()==YELLOW_PAWN||cell[i+1][j+1].getTYPE()==YELLOW_KING)&& cell[i+2][j+2].getTYPE()==EMPTY && (i+2)<=7&& (j+2)<=7))
return true;
}
if ((cell[i][j].getTYPE()== WHITE_KING)&&(currentPlayer.getcolour() ==Player::Colour::WHITE))
{
if (((cell[i-1][j-1].getTYPE()==YELLOW_PAWN||cell[i-1][j-1].getTYPE()==YELLOW_KING)&& cell[i-2][j-2].getTYPE()==EMPTY && (i-2)>=0&& (j-2)>=0)
||((cell[i-1][j+1].getTYPE()==YELLOW_PAWN||cell[i-1][j+1].getTYPE()==YELLOW_KING)&& cell[i-2][j+2].getTYPE()==EMPTY && (i-2)>=0&& (j+2)<=7))
return true;
}
if ((cell[i][j].getTYPE()==YELLOW_PAWN || cell[i][j].getTYPE()==YELLOW_KING)&&(currentPlayer.getcolour() ==Player::Colour::YELLOW))
{
if (((cell[i-1][j-1].getTYPE()==WHITE_PAWN||cell[i-1][j-1].getTYPE()==WHITE_KING)&& cell[i-2][j-2].getTYPE()==EMPTY && (i-2)>=0&& (j-2)>=0)
||((cell[i-1][j+1].getTYPE()==WHITE_PAWN||cell[i-1][j+1].getTYPE()==WHITE_KING)&& cell[i-2][j+2].getTYPE()==EMPTY && (i-2)>=0&& (j+2)<=7))
return true;
}
if ((cell[i][j].getTYPE()== YELLOW_KING)&&(currentPlayer.getcolour() ==Player::Colour::YELLOW))
{
if (((cell[i+1][j-1].getTYPE()==WHITE_PAWN||cell[i+1][j-1].getTYPE()==WHITE_KING)&& cell[i+2][j-2].getTYPE()==EMPTY && (i+2)<=7&& (j-2)>=0)
||((cell[i+1][j+1].getTYPE()==WHITE_PAWN||cell[i+1][j+1].getTYPE()==WHITE_KING)&& cell[i+2][j+2].getTYPE()==EMPTY && (i+2)<=7&& (j+2)<=7))
return true;
}
}
}
return false;
}
bool Board::checkStaleMate() // return 0 if not stalemate and 1 if stalemate
{
bool color = (currentPlayer.getcolour() == Player::WHITE)?0:1;
std::vector <Move> move = getViableMoves(color);
if(move.empty()){
return true;
}
return false;
}
int Board::checkWin()
{
if(checkStaleMate()){
// alterTurn();
return 1;
}
int nOpponents=0;
for (int i =0;i<8;i++)
{
for (int j =0;j<8;j++)
{
if (currentPlayer.getcolour() ==Player::Colour::WHITE)
if (cell[i][j].getTYPE()==WHITE_PAWN || cell[i][j].getTYPE()==WHITE_KING)
nOpponents++;
if (currentPlayer.getcolour()==Player::Colour::YELLOW)
if (cell[i][j].getTYPE()==YELLOW_PAWN || cell[i][j].getTYPE()==YELLOW_KING)
nOpponents++;
}
}
if (nOpponents==0) return 1;
else return 0;
}
bool Board::checkCapture( int x, int y ) {
// red 0, black 1
bool color = ( cell[x][y].getTYPE() == WHITE_PAWN || cell[x][y].getTYPE() == WHITE_KING ) ? 0 : 1;
// check for pawns
if ( cell[x][y].getTYPE() == WHITE_PAWN || cell[x][y].getTYPE() == YELLOW_PAWN ) {
for ( int a : {-1, 1} ) {
for ( int b : {-1, 1} ) {
if( color ){
if( (a==1 && b ==1 ) || (a==1 && b ==-1 )){
break;
}
}else{
if( (a==-1 && b ==-1 ) || (a==-1 && b ==1 )){
break;
}
}
int i = x + a;
int j = y + b;
if ( i+a < 8 && i+a >= 0 && j+b < 8 && j+b >= 0 ) {
if ( color ) {
if ( cell[i][j].getTYPE() == WHITE_KING || cell[i][j].getTYPE() == WHITE_PAWN )
if ( cell[i+a][j+b].getTYPE() == EMPTY )
return true;
} else {
if ( cell[i][j].getTYPE() == YELLOW_KING || cell[i][j].getTYPE() == YELLOW_PAWN )
if ( cell[i+a][j+b].getTYPE() == EMPTY )
return true;
}
}
}
}
}
// check for kings
else if ( cell[x][y].getTYPE() == WHITE_KING || cell[x][y].getTYPE() == YELLOW_KING ) {
for ( int a : {-1, 1} ) {
for ( int b : {-1, 1} ) {
int i = x + a;
int j = y + b;
if ( i+a < 8 && i+a >= 0 && j+b < 8 && j+b >= 0 ) {
if ( color ) {
if ( cell[i][j].getTYPE() == YELLOW_KING || cell[i][j].getTYPE() == YELLOW_PAWN )
break;
if ( cell[i][j].getTYPE() == WHITE_KING || cell[i][j].getTYPE() == WHITE_PAWN ) {
if ( cell[i+a][j+b].getTYPE() == EMPTY )
return true;
else
break;
}
} else {
if ( cell[i][j].getTYPE() == WHITE_KING || cell[i][j].getTYPE() == WHITE_PAWN )
break;
if ( cell[i][j].getTYPE() == YELLOW_KING || cell[i][j].getTYPE() == YELLOW_PAWN ) {
if ( cell[i+a][j+b].getTYPE() == EMPTY )
return true;
else
break;
}
}
}
}
}
}
return false;
}
bool Board::checkCapture( bool color ) {
for ( int i = 0; i < 8; i++ ) {
for ( int j = 0; j < 8; j++ ) {
if ( color ) {
if ( cell[i][j].getTYPE() == YELLOW_KING || cell[i][j].getTYPE() == YELLOW_PAWN )
if ( checkCapture( i, j ) )
return true;
} else {
if ( cell[i][j].getTYPE() == WHITE_KING || cell[i][j].getTYPE() == WHITE_PAWN )
if ( checkCapture( i, j ) )
return true;
}
}
}
return false;
}
// get all viable sequences after first move
std::vector< Move > Board::getMoveSequences( Move move, Board b ) {
std::vector< Move > moves;
if ( b.move( move.coords[0] ) == 1 ) {
moves.emplace_back( move.coords[0] );
} else {
for ( auto& m : b.getViableMoves( move.coords[0].x2, move.coords[0].y2 ) ) {
std::vector< Move > tmp = getMoveSequences( m, b );
moves.insert( moves.end(), tmp.begin(), tmp.end() );
}
for ( auto& m : moves ) {
m.add( move.coords[0] );
}
}
return moves;
}
//
// // get all viable first moves for a color
std::vector< Move > Board::getViableMoves( bool color ) {
std::vector< Move > moves;
for ( int i = 0; i < 8; i++ ) {
for ( int j = 0; j < 8; j++ ) {
if ( color ) {
if ( cell[i][j].getTYPE() == YELLOW_KING || cell[i][j].getTYPE() == YELLOW_PAWN ) {
auto tmp = getViableMoves( i, j );
for ( auto& m : tmp ) {
auto tmp2 = getMoveSequences( m, *this );
moves.insert( moves.end(), tmp2.begin(), tmp2.end() );
}
}
} else {
if ( cell[i][j].getTYPE() == WHITE_KING || cell[i][j].getTYPE() == WHITE_PAWN ) {
auto tmp = getViableMoves( i, j );
for ( auto& m : tmp ) {
auto tmp2 = getMoveSequences( m, *this );
moves.insert( moves.end(), tmp2.begin(), tmp2.end() );
}
}
}
}
}
return moves;
}
//
// // get all viable first moves for a pawn
std::vector< Move > Board::getViableMoves( int x, int y ) {
bool color;
std::vector< Move > moves;
// if a field is empty return empty vector
if ( cell[x][y].getTYPE() == EMPTY )
return moves;
if ( cell[x][y].getTYPE() == WHITE_PAWN || cell[x][y].getTYPE() == WHITE_KING ) {
color = 0;
} else {
color = 1;
}
// If a capture is possible on the other move just return empty vector
if ( checkCapture( color ) != checkCapture( x, y ) )
return moves;
// Check for pawns
if ( cell[x][y].getTYPE() == WHITE_PAWN || cell[x][y].getTYPE() == YELLOW_PAWN ) {
// If there are no capturing opportunities
if ( !checkCapture( x, y ) ) {
int xdir = color ? -1 : 1;
if ( y < 7 )
if ( cell[x+xdir][y+1].getTYPE() == EMPTY )
moves.push_back( Move( x, y, x+xdir, y+1 ) );
if ( y > 0 )
if ( cell[x+xdir][y-1].getTYPE() == EMPTY )
moves.push_back( Move( x, y, x+xdir, y-1 ) );
// If there are captures available
} else {
for ( int a : {-1, 1} ) {
for ( int b : {-1, 1} ) {
int i = x + a;
int j = y + b;
if ( i+a < 8 && i+a >= 0 && j+b < 8 && j+b >= 0 ) {
if ( color ) {
if ( cell[i][j].getTYPE() == WHITE_KING || cell[i][j].getTYPE() == WHITE_PAWN )
if ( cell[i+a][j+b].getTYPE() == EMPTY )
moves.push_back( Move( x, y, i+a, j+b ) );
} else {
if ( cell[i][j].getTYPE() == YELLOW_KING || cell[i][j].getTYPE() == YELLOW_PAWN )
if ( cell[i+a][j+b].getTYPE() == EMPTY )
moves.push_back( Move( x, y, i+a, j+b ) );
}
}
}
}
}
// Check for Kings
} else {
// flag if the move is a capture
bool captureFlag = checkCapture( x, y );
// for each direction
for ( int a : {-1, 1} ) {
for ( int b : {-1, 1} ) {
int i = x + a;
int j = y + b;
// move until there is an obstacle on a path
while ( i >= 0 && j >= 0 && i <= 7 && j <= 7 ) {
//if not capturing add those moves
if ( cell[i][j].getTYPE() == EMPTY ) {
if ( !captureFlag )
moves.push_back( Move( x, y, i, j ) );
break;
} else if ( color ) {
// break if an ally on path
if ( cell[i][j].getTYPE() == YELLOW_KING || cell[i][j].getTYPE() == YELLOW_PAWN )
break;
// add all moves possible after a capture
else if ( ( cell[i][j].getTYPE() == WHITE_KING || cell[i][j].getTYPE() == WHITE_PAWN ) && captureFlag ) {
do {
i += a;
j += b;
if ( i >= 0 && j >= 0 && i <= 7 && j <= 7 ) {
if ( cell[i][j].getTYPE() == EMPTY )
moves.push_back( Move( x, y, i, j ) );
if(!checkCapture(i, j)){
break;
}
else
break;
} else
break;
} while ( true );
break;
} else
break;
} else {
// break if an ally on path
if ( cell[i][j].getTYPE() == WHITE_KING || cell[i][j].getTYPE() == WHITE_PAWN )
break;
// add all moves possible after a capture
if ( ( cell[i][j].getTYPE() == YELLOW_KING || cell[i][j].getTYPE() == YELLOW_PAWN ) && captureFlag ) {
do {
i += a;
j += b;
if ( i >= 0 && j >= 0 && i <= 7 && j <= 7 ) {
if ( cell[i][j].getTYPE() == EMPTY )
moves.push_back( Move( x, y, i, j ) );
if(!checkCapture(i, j)){
break;
}
else
break;
} else
break;
} while ( true );
break;
} else
break;
}
i += a;
j += b;
}
}
}
}
return moves;
}
//
// // capture pawn or king from between those coords
void Board::capture( int x1, int y1, int x2, int y2 ) {
// mark direction
int a = (x1<x2)? 1 : -1;
int b = (y1<y2)? 1 : -1;
// for all fields through the way
for ( int i = x1+a, j = y1+b; i != x2 && j != y2; i+=a, j+=b ) {
// clear it
cell[i][j].setTYPE(EMPTY);
}
}
//
// // returns 0 if wrong move, 1 if finished, and 2 if there is still a capture to do
int Board::move( Coords m ) {
bool color = (cell[m.x1][m.y1].getTYPE() == WHITE_KING || cell[m.x1][m.y1].getTYPE() == WHITE_PAWN) ? 0 : 1;
return move( m.x1, m.y1, m.x2, m.y2, color );
}
int Board::move( Move m ) {
// bool color = ( cell[m.coords[0].x1][m.coords[0].y1].getTYPE() == WHITE_KING ||
// cell[m.coords[0].x1][m.coords[0].y1].getTYPE() == WHITE_PAWN ) ? 0 : 1;
int i{};
while ( move( m.coords[i] ) == 2 )
i++;
return 1;
}
int Board::move( int x1, int y1, int x2, int y2, bool color ) {
// check if player moved right color
if ( ( color && (cell[x1][y1].getTYPE() == WHITE_KING || cell[x1][y1].getTYPE() == WHITE_PAWN) ) ||
( !color && (cell[x1][y1].getTYPE() == YELLOW_KING || cell[x1][y1].getTYPE() == YELLOW_PAWN) ) ){
return 0;
}
bool captureFlag = false;
// if given move is in viable moves for that pawn/king
for ( auto& move : getViableMoves( x1, y1 ) ) {
if ( move == Move( x1, y1, x2, y2 ) ) {
// if a move included capture
if ( checkCapture( color ) ) {
capture( x1, y1, x2, y2 );
captureFlag = true;
}
cell[x2][y2].setTYPE(cell[x1][y1].getTYPE());
cell[x1][y1].setTYPE(EMPTY);
// if there is still a capture for this pawn/king
if ( captureFlag && checkCapture( x2, y2 ) )
return 2;
// if a move ended in a promote
else if ( ( !color && x2 == 7) || ( color && x2 == 0 ) ){
if(color){
cell[x2][y2].setTYPE(YELLOW_KING);
}else{
cell[x2][y2].setTYPE(WHITE_KING);
}
}
return 1;
}
}
return 0;
}
//
// // returns 0 if game continues 1 if red won, 2 if black won, -1 if tie
int Board::checkState( bool color ) {
int redPawns{}, blackPawns{}, redKings{}, blackKings{};
bool redMoves{}, blackMoves{};
for ( int i = 0; i < 8; i++ ) {
for ( int j = 0; j < 8; j++ ) {
switch ( cell[i][j].getTYPE() ) {
case EMPTY:
break;
case WHITE_PAWN:
if ( !redMoves )
if ( getViableMoves( i, j ).size() != 0 )
redMoves = true;
redPawns++;
break;
case YELLOW_PAWN:
if ( !blackMoves )
if ( getViableMoves( i, j ).size() != 0 )
blackMoves = true;
blackPawns++;
break;
case WHITE_KING:
if ( !redMoves )
if ( getViableMoves( i, j ).size() != 0 )
redMoves = true;
redKings++;
break;
case YELLOW_KING:
if ( !blackMoves )
if ( getViableMoves( i, j ).size() != 0 )
blackMoves = true;
blackKings++;
break;
}
}
}
if ( ( blackPawns || blackKings ) && ( redPawns || redKings ) && ( ( color && blackMoves ) || ( !color && redMoves ) ) ) {
if ( blackKings && redKings &&
blackPawns == blackP &&
redPawns == redP &&
blackKings == blackK &&
redKings == redK ) {
if ( ++drawCounter == 30 )
return -1;
else
drawCounter = 0;
}
blackP = blackPawns;
redP = redPawns;
blackK = blackKings;
redK = redKings;
return 0;
}
else if ( ( !blackPawns && !blackKings ) || ( color && !blackMoves ) )
return 1;
else if ( ( !redPawns && !redKings ) || ( !color && !redMoves ) )
return 2;
else
return 10;
}
//
// // evaluate value of a field
// // pawn 7 points
// // last row + 0
// // semi last row + 1
// // 3rd row + 2
// // > 4th row + 3
// // king 25 points
// // anything almost connected with left or right border + 1 point
// // directly connected +2
// // capture oportunity + 15
int Board::evaluateField( int x, int y ) {
int score{};
switch( cell[x][y].getTYPE() ) {
case EMPTY:
break;
case WHITE_PAWN:
score += 7;
if ( x > 0 ) {
score += 2;
if ( x > 1 ) {
score ++;
if ( x > 2 )
score ++;;
}
}
if ( y < 2 || y > 5 ) {
score ++;
if ( y < 1 || y > 6 )
score ++;
}
score += 15;
break;
case YELLOW_PAWN:
score += 7;
if ( x < 7 ) {
score += 2;
if ( x < 6 ) {
score ++;
if ( x < 5 )
score ++;
}
}
if ( y < 2 || y > 5 ) {
score ++;
if ( y < 1 || y > 6 )
score ++;
}
score += 15;
break;
case WHITE_KING:
score += 25;
if ( y < 2 || y > 5 ) {
score ++;
if ( y < 1 || y > 6 )
score ++;
}
score += 15;
break;
case YELLOW_KING:
score += 25;
if ( y < 2 || y > 5 ) {
score ++;
if ( y < 1 || y > 6 )
score ++;
}
score += 15;
break;
}
return score;
}
// returns value depending on game state and sum of field values
int Board::evaluateBoard( bool color, bool side ) {
switch ( checkState( color ) ) {
case -1:
return 0;
case 0:
break;
case 1:
return side ? -10000 : 10000;
case 2:
return side ? 10000 : -10000;
}
int black{}, red{};
for ( int i = 0; i < 8; i++ ) {
for ( int j = 0; j < 8; j++ ) {
if ( cell[i][j].getTYPE() == WHITE_KING || cell[i][j].getTYPE() == WHITE_PAWN )
red += evaluateField( i, j );
else if ( cell[i][j].getTYPE() != EMPTY )
black += evaluateField( i, j );
}
}
if ( side )
return black - red;
else
return red - black;
}