internal bool sell(int amount)
{
if (amount > numOwn)
{
amount = numOwn;
}
if (amount <= 0)
{
return(false);
}
int c = StockCompanyModule.calcCommition(currentPriceU, amount);
long v = amount * currentPriceU - c;
manager.earn(v, AccountGenre.OTHERS);
int prev = averageBoughtPriceU;
_numOwn -= amount;
_numInMarket += amount;
bool r = (_numOwn == 0);
// lower the price according to the bought amount
currentPriceU -= _currentPriceU * amount / numTotal;
moneySpend = prev * _numOwn;
return(r);
}
internal bool buy(int amount)
{
if (amount > numInMarket)
{
amount = numInMarket;
}
if (amount <= 0)
{
return(false);
}
int c = StockCompanyModule.calcCommition(currentPriceU, amount);
long v = amount * currentPriceU + c;
manager.spend(v, AccountGenre.OTHERS);
bool r = (_numOwn == 0);
moneySpend += v;
_numOwn += amount;
_numInMarket -= amount;
// raise the price according to the bought amount
currentPriceU += _currentPriceU * amount / numTotal;
return(r);
}