static int GetUserMove(int nCoins)
{
int nTaken,limit;
while(TRUE){
printf("How many would you like? ");
nTaken=GetInteger();
if(MoveIsLegal(nTaken,nCoins)) break;
limit=(nCoins<MaxTake)?nCoins:MaxTake;
printf("That's cheating! Please choose a number");
printf(" between 1 and %d.\n",limit);
printf("There are %d coins in the pile.\n",nCoins);
}
return nTaken;
}
int getMoveForPosition(ChessBoard * board) {
std::pair<std::multimap<HASHKEY, Coord>::iterator,
std::multimap<HASHKEY, Coord>::iterator> positionStartEnd;
cerr << board_to_string(board) << endl;
positionStartEnd = openingBook.equal_range(board->zobristHashKey);
std::vector<Coord> coords;
int totalWeight = 0;
for(std::multimap<HASHKEY, Coord>::iterator itPosition = positionStartEnd.first;
itPosition != positionStartEnd.second;
++itPosition) {
coords.push_back(itPosition->second);
totalWeight += itPosition->second.weight;
}
// select a move given the weights
if (coords.empty())
return -1;
Coord theCoord;
if (coords.size() == 1)
theCoord = coords.front();
else {
int whichOne = rand() % totalWeight;
int weightSoFar = 0;
for(std::vector<Coord>::iterator itCoords = coords.begin(); itCoords != coords.end(); ++itCoords) {
if (itCoords->weight + weightSoFar > whichOne) {
theCoord = *itCoords;
break;
}
weightSoFar += itCoords->weight;
}
// convert it to a move
}
if (!MoveIsLegal(board, theCoord.move)) {
cerr << "move from opening book: " << MoveToString(theCoord.move) << " is not legal!" << endl;
return -1;
}
LOG4CPLUS_DEBUG(logger, "book move " << MoveToString(theCoord.move));
return theCoord.move;
}
