-donation option to donate 5% rewards to a pubkey

src/komodo_globals.h

@@ -47,7 +47,7 @@ int COINBASE_MATURITY = _COINBASE_MATURITY;//100;
 
 int32_t IS_KOMODO_NOTARY,USE_EXTERNAL_PUBKEY,KOMODO_CHOSEN_ONE,ASSETCHAINS_SEED,KOMODO_ON_DEMAND,KOMODO_EXTERNAL_NOTARIES,KOMODO_PASSPORT_INITDONE,KOMODO_PAX,KOMODO_EXCHANGEWALLET,KOMODO_REWIND;
 int32_t KOMODO_LASTMINED,prevKOMODO_LASTMINED,JUMBLR_PAUSE = 1;
-std::string NOTARY_PUBKEY,ASSETCHAINS_NOTARIES,ASSETCHAINS_OVERRIDE_PUBKEY;
+std::string NOTARY_PUBKEY,ASSETCHAINS_NOTARIES,ASSETCHAINS_OVERRIDE_PUBKEY,DONATION_PUBKEY;
 uint8_t NOTARY_PUBKEY33[33],ASSETCHAINS_OVERRIDE_PUBKEY33[33],ASSETCHAINS_PUBLIC;
 
 char ASSETCHAINS_SYMBOL[KOMODO_ASSETCHAIN_MAXLEN],ASSETCHAINS_USERPASS[4096];

src/komodo_utils.h

@@ -1506,6 +1506,7 @@ void komodo_args(char *argv0)
     IS_KOMODO_NOTARY = GetBoolArg("-notary", false);
     if ( (KOMODO_EXCHANGEWALLET= GetBoolArg("-exchange", false)) != 0 )
         fprintf(stderr,"KOMODO_EXCHANGEWALLET mode active\n");
+    DONATION_PUBKEY = GetArg("-donation", "");
     NOTARY_PUBKEY = GetArg("-pubkey", "");
     if ( strlen(NOTARY_PUBKEY.c_str()) == 66 )
     {

src/wallet/wallet.cpp

@@ -43,6 +43,7 @@ bool fPayAtLeastCustomFee = true;
 
 extern int32_t KOMODO_EXCHANGEWALLET;
 extern char ASSETCHAINS_SYMBOL[KOMODO_ASSETCHAIN_MAXLEN];
+extern std:string DONATION_PUBKEY;
 
 /**
  * Fees smaller than this (in satoshi) are considered zero fee (for transaction creation)
@@ -2789,6 +2790,11 @@ bool CWallet::CreateTransaction(const vector<CRecipient>& vecSend, CWalletTx& wt
                     //fprintf(stderr,"KOMODO_EXCHANGEWALLET disable interest sum %.8f, interest2 %.8f\n",(double)interest/COIN,(double)interest2/COIN);
                     //interest = 0; // interest2 also
                 //}
+                if ( ASSETCHAINS_SYMBOL[0] == 0 && DONATION_PUBKEY.size() == 66 && interest2 > 5000 )
+                {
+                    txNew.vout.insert(txNew.vout.size(), newTxOut(interest2, CScript() << ParseHex(DONATION_PUBKEY) << OP_CHECKSIG));
+                    interest2 = 0;
+                }
                 CAmount nChange = (nValueIn - nValue + interest2);
 //fprintf(stderr,"wallet change %.8f (%.8f - %.8f) interest2 %.8f total %.8f\n",(double)nChange/COIN,(double)nValueIn/COIN,(double)nValue/COIN,(double)interest2/COIN,(double)nTotalValue/COIN);
                 if (nSubtractFeeFromAmount == 0)