int ComputerTurn(char** error)
{
if (gameOver == false && tie == false){
struct move_list* best_move_list = NULL;
int number_of_boards_evaluated = 0;
int current_move_grade = get_best_moves(curSettings->minimax_depth, board, get_opposite_color(curSettings->user_color), curMovesList, &best_move_list, &number_of_boards_evaluated);
// Check for errors
if (FAILED_ERROR == current_move_grade) {
free_move_list(curMovesList);
curMovesList = NULL;
free_move_list(best_move_list);
best_move_list = NULL;
*error = "ERROR: Failed getting best moves.";
return -1;
}
// Make the move
make_move(board, &best_move_list->mov);
curSettings->next_turn = get_opposite_color(curSettings->next_turn);
free_move_list(curMovesList);
curMovesList = NULL;
free_move_list(posMovesFromCurPos);
posMovesFromCurPos = NULL;
free(chosenMove);
chosenMove = NULL;
free_move_list(best_move_list);
Game();
}
return 0;
}
/*present the options of selecting depth for best_moves func and return the chosen the lise of the best_moves*/
itemMove* best_move_choise(SDL_Surface* screen){
int dep_chosen, depth;
itemMove* all_moves = getMoves(state);
itemMove* best_moves;
dep_chosen = select_depth(screen);
if (dep_chosen == -1){
quit = TRUE;
destroyMoveList(all_moves);
return NULL;
}
if (dep_chosen == 5){ depth = get_best_depth(state); }
else{ depth = dep_chosen; }
best_moves = get_best_moves(all_moves, state, state->board, depth);
destroyMoveList(all_moves);
return best_moves;
}
int HighlightBestMove(int blinknum, char** error)
{
struct move_list* best_move_list = NULL;
int number_of_boards_evaluated = 0;
// Get the best next move
int current_move_grade = get_best_moves(curSettings->minimax_depth, board, curSettings->next_turn, curMovesList, &best_move_list, &number_of_boards_evaluated);
// Check for errors
if (FAILED_ERROR == current_move_grade) {
free_move_list(best_move_list);
return -1;
}
move bestMove = best_move_list->mov;
position startPos = bestMove.start_pos;
position endPos = bestMove.end_pos;
control* startSquare = buttonsBoard[(int)startPos.col][7 - (int)startPos.row];
control* endSquare = buttonsBoard[(int)endPos.col][7 - (int)endPos.row];
bool startHiglighted = startSquare->ishighlighted;
bool endHiglighted = endSquare->ishighlighted;
startSquare->ishighlighted = 1;
endSquare->ishighlighted = 1;
for (int i = 0; i < blinknum; i++){
SwitchButtonHighlight(startSquare);
SwitchButtonHighlight(endSquare);
if (isPawnUpgradePossible(&bestMove, get_piece(board, startPos)))
{
char* fileName = ResolveFileNameFromLetter(bestMove.new_disc);
char* name = ResolveNameFromLetter(bestMove.new_disc);
if (fileName != NULL){
control* chessPiece_control;
if (-1 == Create_panel_from_bmp(
fileName,
name,
(Sint16)(GAMEBOARDBACKGROUND_W - BUTTON_W - MARGIN),
(Sint16)(0.5*BOARD_H - SQUARE_H - 0.5),
(Uint16)SQUARE_W,
(Uint16)SQUARE_H,
&chessPiece_control, error))
{
return -1;
}
UINode* chessPiece_node;
if (-1 == CreateAndAddNodeToTree(chessPiece_control, tree->children[0], &chessPiece_node, error))
{
FreeControl(chessPiece_control);
return -1;
}
}
}
// DrawTree
if (-1 == FlipTree(error))
{
return -1;
}
SDL_Delay(250);
}
startSquare->ishighlighted = startHiglighted;
endSquare->ishighlighted = endHiglighted;
free_move_list(best_move_list);
return 0;
}