Topic: [ANN][GRE] GreenCoin - A Blockchain-Based Social Carbon Ecosystem - page 12. (Read 80399 times)

// Settings
int64_t nTransactionFee = MIN_TX_FEE;
int64_t nReserveBalance = 0;
int64_t nMinimumInputValue = 0;

static int64_t GetStakeCombineThreshold() { return 1000 * COIN; }
static int64_t GetStakeSplitThreshold() { return 2 * GetStakeCombineThreshold(); }

// ppcoin: total coins staked (non-spendable until maturity)
int64_t CWallet::GetStake() const
{
    int64_t nTotal = 0;
    LOCK2(cs_main, cs_wallet);
    for (map::const_iterator it = mapWallet.begin(); it != mapWallet.end(); ++it)
    {
        const CWalletTx* pcoin = &(*it).second;
        if (pcoin->IsCoinStake() && pcoin->GetBlocksToMaturity() > 0 && pcoin->GetDepthInMainChain() > 0)
            nTotal += CWallet::GetCredit(*pcoin);
    }
    return nTotal;
}

uint64_t CWallet::GetStakeWeight() const
{
    // Choose coins to use
    int64_t nBalance = GetBalance();

    if (nBalance <= nReserveBalance)
        return 0;

    vector vwtxPrev;

    set > setCoins;
    int64_t nValueIn = 0;

    if (!SelectCoinsForStaking(nBalance - nReserveBalance, GetTime(), setCoins, nValueIn))
        return 0;

    if (setCoins.empty())
        return 0;

    uint64_t nWeight = 0;

    int64_t nCurrentTime = GetTime();
    CTxDB txdb("r");

    LOCK2(cs_main, cs_wallet);
    BOOST_FOREACH(PAIRTYPE(const CWalletTx*, unsigned int) pcoin, setCoins)
    {
        if (pcoin.first->GetDepthInMainChain() >= nStakeMinConfirmations)
            nWeight += pcoin.first->vout[pcoin.second].nValue;
    }

    return nWeight;
}