1 files changed, 138 insertions, 0 deletions
diff --git a/src/game-server/quest.cpp b/src/game-server/quest.cpp
new file mode 100644
index 00000000..f6675127
--- /dev/null
+++ b/src/game-server/quest.cpp
@@ -0,0 +1,138 @@
+/*
+ *  The Mana World Server
+ *  Copyright 2007 The Mana World Development Team
+ *
+ *  This file is part of The Mana World.
+ *
+ *  The Mana World is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  any later version.
+ *
+ *  The Mana World is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with The Mana World; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ *  $Id$
+ */
+
+#include <algorithm>
+#include <list>
+#include <map>
+#include <string>
+
+#include "game-server/quest.hpp"
+
+#include "defines.h"
+#include "game-server/accountconnection.hpp"
+#include "game-server/character.hpp"
+#include "game-server/deathlistener.hpp"
+#include "utils/logger.h"
+
+typedef std::list< QuestCallback > QuestCallbacks;
+typedef std::map< std::string, QuestCallbacks > PendingVariables;
+
+struct PendingQuest
+{
+    Character *character;
+    PendingVariables variables;
+};
+
+typedef std::map< int, PendingQuest > PendingQuests;
+
+static PendingQuests pendingQuests;
+
+bool getQuestVar(Character *ch, std::string const &name, std::string &value)
+{
+    std::map< std::string, std::string >::iterator
+        i = ch->questCache.find(name);
+    if (i == ch->questCache.end()) return false;
+    value = i->second;
+    return true;
+}
+
+void setQuestVar(Character *ch, std::string const &name,
+                 std::string const &value)
+{
+    std::map< std::string, std::string >::iterator
+        i = ch->questCache.lower_bound(name);
+    if (i == ch->questCache.end() || i->first != name)
+    {
+        ch->questCache.insert(i, std::make_pair(name, value));
+    }
+    else if (i->second == value)
+    {
+        return;
+    }
+    else
+    {
+        i->second = value;
+    }
+    accountHandler->updateQuestVar(ch, name, value);
+}
+
+/**
+ * Listener for deleting related quests when a character disappears.
+ */
+struct QuestDeathListener: DeathListener
+{
+    void deleted(Being *b)
+    {
+        int id = static_cast< Character * >(b)->getDatabaseID();
+        pendingQuests.erase(id);
+    }
+};
+
+static QuestDeathListener questDeathListener;
+
+void recoverQuestVar(Character *ch, std::string const &name,
+                     QuestCallback const &f)
+{
+    int id = ch->getDatabaseID();
+    PendingQuests::iterator i = pendingQuests.lower_bound(id);
+    if (i == pendingQuests.end() || i->first != id)
+    {
+        i = pendingQuests.insert(i, std::make_pair(id, PendingQuest()));
+        i->second.character = ch;
+        /* Register a listener, because we cannot afford to get invalid
+           pointers, when we finally recover the variable. */
+        ch->addDeathListener(&questDeathListener);
+    }
+    i->second.variables[name].push_back(f);
+    accountHandler->requestQuestVar(ch, name);
+}
+
+void recoveredQuestVar(int id, std::string const &name,
+                       std::string const &value)
+{
+    PendingQuests::iterator i = pendingQuests.find(id);
+    if (i == pendingQuests.end()) return;
+    PendingVariables &variables = i->second.variables;
+    PendingVariables::iterator j = variables.find(name);
+    if (j == variables.end())
+    {
+        LOG_ERROR("Account server recovered an unexpected quest variable.");
+        return;
+    }
+
+    Character *ch = i->second.character;
+    ch->questCache[name] = value;
+
+    // Call the registered callbacks.
+    for (QuestCallbacks::const_iterator k = j->second.begin(),
+         k_end = j->second.end(); k != k_end; ++k)
+    {
+        k->handler(ch, name, value, k->data);
+    }
+
+    variables.erase(j);
+    if (variables.empty())
+    {
+        pendingQuests.erase(i);
+    }
+}