Fix GUI stake calcs

src/kernel.cpp

@@ -43,6 +43,16 @@ int64 GetWeight(int64 nIntervalBeginning, int64 nIntervalEnd)
     return min(nIntervalEnd - nIntervalBeginning - nStakeMinAge, (int64)nStakeMaxAge);
 }
 
+// Get time weight 2 - This is added for informational purposes since staking takes 9.1 days min approx. because of bug
+int64 GetWeight2(int64 nIntervalBeginning, int64 nIntervalEnd)
+{
+    // Kernel hash weight starts from 0 at the min age
+    // this change increases active coins participating the hash and helps
+    // to secure the network when proof-of-stake difficulty is low
+	int64 nStakeMinAgeV2 = 60 * 60 * 24 * 9.1;
+    return min(nIntervalEnd - nIntervalBeginning - nStakeMinAgeV2, (int64)nStakeMaxAge);
+}
+
 // Get the last stake modifier and its generation time from a given block
 static bool GetLastStakeModifier(const CBlockIndex* pindex, uint64& nStakeModifier, int64& nModifierTime)
 {

src/kernel.h

@@ -38,5 +38,6 @@ bool CheckStakeModifierCheckpoints(int nHeight, unsigned int nStakeModifierCheck
 
 // Get time weight using supplied timestamps
 int64 GetWeight(int64 nIntervalBeginning, int64 nIntervalEnd);
+int64 GetWeight2(int64 nIntervalBeginning, int64 nIntervalEnd);
 
 #endif // PPCOIN_KERNEL_H

src/qt/bitcoingui.cpp

@@ -994,7 +994,7 @@ void BitcoinGUI::updateMintingWeights()
         nWeight = 0;
 
         if (pwalletMain)
-            pwalletMain->GetStakeWeight(*pwalletMain, nMinMax, nMinMax, nWeight);
+            pwalletMain->GetStakeWeight2(*pwalletMain, nMinMax, nMinMax, nWeight);
 
         nNetworkWeight = GetPoSKernelPS();
     }

src/wallet.cpp

@@ -1429,6 +1429,63 @@ bool CWallet::GetStakeWeight(const CKeyStore& keystore, uint64& nMinWeight, uint
     return true;
 }
 
+//This is added for informational purposes since staking takes 9.1 days min approx. because of bug
+bool CWallet::GetStakeWeight2(const CKeyStore& keystore, uint64& nMinWeight, uint64& nMaxWeight, uint64& nWeight)
+{
+    // Choose coins to use
+    int64 nBalance = GetBalance();
+
+    int64 nReserveBalance = 0;
+    if (mapArgs.count("-reservebalance") && !ParseMoney(mapArgs["-reservebalance"], nReserveBalance))
+        return error("CreateCoinStake : invalid reserve balance amount");
+    if (nBalance <= nReserveBalance)
+        return false;
+
+    set<pair<const CWalletTx*,unsigned int> > setCoins;
+    vector<const CWalletTx*> vwtxPrev;
+    int64 nValueIn = 0;
+
+    if (!SelectCoins(nBalance - nReserveBalance, GetTime(), setCoins, nValueIn))
+        return false;
+
+    if (setCoins.empty())
+        return false;
+
+    CTxDB txdb("r");
+    BOOST_FOREACH(PAIRTYPE(const CWalletTx*, unsigned int) pcoin, setCoins)
+    {
+        CTxIndex txindex;
+        {
+            LOCK2(cs_main, cs_wallet);
+            if (!txdb.ReadTxIndex(pcoin.first->GetHash(), txindex))
+                continue;
+        }
+
+        int64 nTimeWeight = GetWeight2((int64)pcoin.first->nTime, (int64)GetTime());
+        CBigNum bnCoinDayWeight = CBigNum(pcoin.first->vout[pcoin.second].nValue) * nTimeWeight / COIN / (24 * 60 * 60);
+
+        // Weight is greater than zero
+        if (nTimeWeight > 0)
+        {
+            nWeight += bnCoinDayWeight.getuint64();
+        }
+
+        // Weight is greater than zero, but the maximum value isn't reached yet
+        if (nTimeWeight > 0 && nTimeWeight < nStakeMaxAge)
+        {
+            nMinWeight += bnCoinDayWeight.getuint64();
+        }
+
+        // Maximum weight was reached
+        if (nTimeWeight == nStakeMaxAge)
+        {
+            nMaxWeight += bnCoinDayWeight.getuint64();
+        }
+    }
+
+    return true;
+}
+
 // ppcoin: create coin stake transaction
 bool CWallet::CreateCoinStake(const CKeyStore& keystore, unsigned int nBits, int64 nSearchInterval, CTransaction& txNew)
 {

src/wallet.h

@@ -179,6 +179,7 @@ class CWallet : public CCryptoKeyStore
     bool CreateTransaction(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew, CReserveKey& reservekey, int64& nFeeRet, const CCoinControl *coinControl=NULL);
     bool CommitTransaction(CWalletTx& wtxNew, CReserveKey& reservekey);
     bool GetStakeWeight(const CKeyStore& keystore, uint64& nMinWeight, uint64& nMaxWeight, uint64& nWeight);
+	bool GetStakeWeight2(const CKeyStore& keystore, uint64& nMinWeight, uint64& nMaxWeight, uint64& nWeight);
     bool CreateCoinStake(const CKeyStore& keystore, unsigned int nBits, int64 nSearchInterval, CTransaction& txNew);
     std::string SendMoney(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew, bool fAskFee=false);
     std::string SendMoneyToDestination(const CTxDestination &address, int64 nValue, CWalletTx& wtxNew, bool fAskFee=false);