void
CNameTxUndo::fromOldState (const valtype& nm, const CCoinsView& view)
{
name = nm;
isNew = !view.GetName (name, oldData);
}
bool
CreateGameTransactions (const CCoinsView& view, unsigned nHeight,
const StepResult& stepResult,
std::vector<CTransaction>& vGameTx)
{
vGameTx.clear ();
/* Destroy name-coins of killed players. */
bool haveTxKills = false;
CMutableTransaction txKills;
txKills.SetGameTx ();
const PlayerSet& killedPlayers = stepResult.GetKilledPlayers ();
const KilledByMap& killedBy = stepResult.GetKilledBy ();
txKills.vin.reserve (killedPlayers.size ());
BOOST_FOREACH(const PlayerID &victim, killedPlayers)
{
const valtype vchName = ValtypeFromString (victim);
CNameData data;
if (!view.GetName (vchName, data))
return error ("Game engine killed a non-existing player %s",
victim.c_str ());
CTxIn txin(data.getUpdateOutpoint ());
/* List all killers, if player was simultaneously killed by several
other players. If the reason was not KILLED_DESTRUCT, handle
it also. If multiple reasons apply, the game tx is constructed
for the first reason according to the ordering inside of KilledByMap.
(Which in turn is determined by the enum values for KILLED_*.) */
typedef KilledByMap::const_iterator Iter;
const std::pair<Iter, Iter> iters = killedBy.equal_range (victim);
if (iters.first == iters.second)
return error ("No reason for killed player %s", victim.c_str ());
const KilledByInfo::Reason reason = iters.first->second.reason;
/* Unless we have destruct, there should be exactly one entry with
the "first" reason. There may be multiple entries for different
reasons, for instance, killed by poison and staying in spawn
area at the same time. */
{
Iter it = iters.first;
++it;
if (reason != KilledByInfo::KILLED_DESTRUCT && it != iters.second
&& reason == it->second.reason)
return error ("Multiple same-reason, non-destruct killed-by"
" entries for %s", victim.c_str ());
}
switch (reason)
{
case KilledByInfo::KILLED_DESTRUCT:
txin.scriptSig << vchName << GAMEOP_KILLED_BY;
for (Iter it = iters.first; it != iters.second; ++it)
{
if (it->second.reason != KilledByInfo::KILLED_DESTRUCT)
{
assert (it != iters.first);
break;
}
txin.scriptSig
<< ValtypeFromString (it->second.killer.ToString ());
}
break;
case KilledByInfo::KILLED_SPAWN:
txin.scriptSig << vchName << GAMEOP_KILLED_BY;
break;
case KilledByInfo::KILLED_POISON:
txin.scriptSig << vchName << GAMEOP_KILLED_POISON;
break;
default:
assert (false);
}
txKills.vin.push_back (txin);
haveTxKills = true;
}
if (haveTxKills)
{
const CTransaction tx(txKills);
assert (tx.IsGameTx () && !tx.IsBountyTx ());
vGameTx.push_back (tx);
}
/* Pay bounties to the players who collected them. The transaction
inputs are just "dummy" containing informational messages. */
bool haveTxBounties = false;
CMutableTransaction txBounties;
txBounties.SetGameTx ();
txBounties.vin.reserve (stepResult.bounties.size ());
txBounties.vout.reserve (stepResult.bounties.size ());
BOOST_FOREACH(const CollectedBounty& bounty, stepResult.bounties)
{
const valtype vchName = ValtypeFromString (bounty.character.player);
CNameData data;
if (!view.GetName (vchName, data))
return error ("Game engine created bounty for non-existing player");
CTxOut txout;
txout.nValue = bounty.loot.nAmount;
if (!bounty.address.empty ())
{
/* Player-provided addresses are validated before accepting them,
so failing here is ok. */
CBitcoinAddress addr(bounty.address);
if (!addr.IsValid ())
return error ("Failed to set player-provided address for bounty");
txout.scriptPubKey = GetScriptForDestination (addr.Get ());
}
else
txout.scriptPubKey = data.getAddress ();
txBounties.vout.push_back (txout);
CTxIn txin;
if (bounty.loot.IsRefund ())
txin.scriptSig
<< vchName << GAMEOP_REFUND
<< bounty.character.index << bounty.loot.GetRefundHeight ();
else
txin.scriptSig
<< vchName << GAMEOP_COLLECTED_BOUNTY
<< bounty.character.index
<< bounty.loot.firstBlock
<< bounty.loot.lastBlock
<< bounty.loot.collectedFirstBlock
<< bounty.loot.collectedLastBlock;
txBounties.vin.push_back (txin);
haveTxBounties = true;
}
if (haveTxBounties)
{
const CTransaction tx(txBounties);
assert (tx.IsGameTx () && tx.IsBountyTx ());
vGameTx.push_back (tx);
}
/* Print log chatter. */
if (haveTxKills || haveTxBounties)
{
LogPrint ("game", "Game transactions @%d:\n", nHeight);
if (haveTxKills)
LogPrint ("game", " kills: %s\n", txKills.GetHash ().ToString ());
if (haveTxBounties)
LogPrint ("game", " bounties: %s\n",
txBounties.GetHash ().ToString ());
}
return true;
}