Pre-0.4.8 update

[novacoin.git] / src / miner.cpp

diff --git a/src/miner.cpp b/src/miner.cpp
index bdae5c7..3b54b96 100644 (file)
--- a/src/miner.cpp
+++ b/src/miner.cpp
@@ -107,8 +107,7 @@ public:
     }
 };
 
-// CreateNewBlock:
-//   fProofOfStake: try (best effort) to make a proof-of-stake block
+// CreateNewBlock: create new block (without proof-of-work/proof-of-stake)
 CBlock* CreateNewBlock(CWallet* pwallet, bool fProofOfStake)
 {
     // Create new block
@@ -157,32 +156,9 @@ CBlock* CreateNewBlock(CWallet* pwallet, bool fProofOfStake)
     if (mapArgs.count("-mintxfee"))
         ParseMoney(mapArgs["-mintxfee"], nMinTxFee);
 
-    // ppcoin: if coinstake available add coinstake tx
-    static int64 nLastCoinStakeSearchTime = GetAdjustedTime();  // only initialized at startup
     CBlockIndex* pindexPrev = pindexBest;
 
-    if (fProofOfStake)  // attempt to find a coinstake
-    {
-        pblock->nBits = GetNextTargetRequired(pindexPrev, true);
-        CTransaction txCoinStake;
-        int64 nSearchTime = txCoinStake.nTime; // search to current time
-        if (nSearchTime > nLastCoinStakeSearchTime)
-        {
-            if (pwallet->CreateCoinStake(*pwallet, pblock->nBits, nSearchTime-nLastCoinStakeSearchTime, txCoinStake))
-            {
-                if (txCoinStake.nTime >= max(pindexPrev->GetMedianTimePast()+1, pindexPrev->GetBlockTime() - nMaxClockDrift))
-                {   // make sure coinstake would meet timestamp protocol
-                    // as it would be the same as the block timestamp
-                    pblock->vtx[0].nTime = txCoinStake.nTime;
-                    pblock->vtx.push_back(txCoinStake);
-                }
-            }
-            nLastCoinStakeSearchInterval = nSearchTime - nLastCoinStakeSearchTime;
-            nLastCoinStakeSearchTime = nSearchTime;
-        }
-    }
-
-    pblock->nBits = GetNextTargetRequired(pindexPrev, pblock->IsProofOfStake());
+    pblock->nBits = GetNextTargetRequired(pindexPrev, fProofOfStake);
 
     // Collect memory pool transactions into the block
     int64 nFees = 0;
@@ -297,10 +273,10 @@ CBlock* CreateNewBlock(CWallet* pwallet, bool fProofOfStake)
                 continue;
 
             // Timestamp limit
-            if (tx.nTime > GetAdjustedTime() || (pblock->IsProofOfStake() && tx.nTime > pblock->vtx[1].nTime))
+            if (tx.nTime > GetAdjustedTime() || (fProofOfStake && tx.nTime > pblock->vtx[0].nTime))
                 continue;
 
-            // ppcoin: simplify transaction fee - allow free = false
+            // Simplify transaction fee - allow free = false
             int64 nMinFee = tx.GetMinFee(nBlockSize, false, GMF_BLOCK);
 
             // Skip free transactions if we're past the minimum block size:
@@ -376,16 +352,14 @@ CBlock* CreateNewBlock(CWallet* pwallet, bool fProofOfStake)
         if (fDebug && GetBoolArg("-printpriority"))
             printf("CreateNewBlock(): total size %"PRI64u"\n", nBlockSize);
 
-        if (pblock->IsProofOfWork())
+        if (!fProofOfStake)
             pblock->vtx[0].vout[0].nValue = GetProofOfWorkReward(pblock->nBits);
 
         // Fill in header
         pblock->hashPrevBlock  = pindexPrev->GetBlockHash();
-        if (pblock->IsProofOfStake())
-            pblock->nTime      = pblock->vtx[1].nTime; //same as coinstake timestamp
         pblock->nTime          = max(pindexPrev->GetMedianTimePast()+1, pblock->GetMaxTransactionTime());
-        pblock->nTime          = max(pblock->GetBlockTime(), pindexPrev->GetBlockTime() - nMaxClockDrift);
-        if (pblock->IsProofOfWork())
+        pblock->nTime          = max(pblock->GetBlockTime(), PastDrift(pindexPrev->GetBlockTime()));
+        if (!fProofOfStake)
             pblock->UpdateTime(pindexPrev);
         pblock->nNonce         = 0;
     }
@@ -404,6 +378,7 @@ void IncrementExtraNonce(CBlock* pblock, CBlockIndex* pindexPrev, unsigned int&
         hashPrevBlock = pblock->hashPrevBlock;
     }
     ++nExtraNonce;
+
     unsigned int nHeight = pindexPrev->nHeight+1; // Height first in coinbase required for block.version=2
     pblock->vtx[0].vin[0].scriptSig = (CScript() << nHeight << CBigNum(nExtraNonce)) + COINBASE_FLAGS;
     assert(pblock->vtx[0].vin[0].scriptSig.size() <= 100);
@@ -548,18 +523,22 @@ void StakeMiner(CWallet *pwallet)
     {
         if (fShutdown)
             return;
-        while (vNodes.empty() || IsInitialBlockDownload())
+
+        while (pwallet->IsLocked())
         {
+            strMintWarning = strMintMessage;
             Sleep(1000);
             if (fShutdown)
                 return;
         }
 
-        while (pwallet->IsLocked())
+        while (vNodes.empty() || IsInitialBlockDownload())
         {
-            strMintWarning = strMintMessage;
             Sleep(1000);
+            if (fShutdown)
+                return;
         }
+
         strMintWarning = "";
 
         //
@@ -572,16 +551,10 @@ void StakeMiner(CWallet *pwallet)
             return;
         IncrementExtraNonce(pblock.get(), pindexPrev, nExtraNonce);
 
-        if(pblock->IsProofOfStake())
+        // Trying to sign a block
+        if (pblock->SignBlock(*pwallet))
         {
-            // Trying to sign a block
-            if (!pblock->SignBlock(*pwallet))
-            {
-                strMintWarning = strMintMessage;
-                continue;
-            }
-
-            strMintWarning = "";
+            strMintWarning = _("Stake generation: new block found!");
             SetThreadPriority(THREAD_PRIORITY_NORMAL);
             CheckStake(pblock.get(), *pwallet);
             SetThreadPriority(THREAD_PRIORITY_LOWEST);