Implemented persistent world and map variables

The gameserver now receive a copy of all world state variables when
they are accepted by the accountserver and receive a copy of all
map state variables of a map when they register it successfully.

Implemented LUA script bindings for getting and setting these variables.

When such a variable is set, the accountserver is notified about this
change. Changes to world state variables are then propagated to all
gameservers by the accountserver.

Be aware that when a gameserver is updating a map, there is no check if
it is actually responsible for said map. But I consider this not a
security flaw, because authenticated game servers are considered to be
trustworthy in a lot of other situations, too.

Also renamed "quest" to "character variable" in the sourcecode.

Reviewed-by: Bertram

1 files changed, 29 insertions, 0 deletions

diff --git a/src/game-server/state.cpp b/src/game-server/state.cpp
index abfa2342..642d5dbe 100644
--- a/src/game-server/state.cpp
+++ b/src/game-server/state.cpp
@@ -65,6 +65,12 @@ typedef std::map< Actor *, DelayedEvent > DelayedEvents;
 static DelayedEvents delayedEvents;
 
 /**
+ * Cached persistent script variables
+ */
+static std::map< std::string, std::string > mScriptVariables;
+
+
+/**
  * Updates object states on the map.
  */
 static void updateMap(MapComposite *map)
@@ -809,3 +815,26 @@ void GameState::sayToAll(const std::string &text)
     // Sends it to everyone connected to the game server
     gameHandler->sendToEveryone(msg);
 }
+
+
+std::string GameState::getVariable(const std::string &key)
+{
+    std::map<std::string, std::string>::iterator iValue = mScriptVariables.find(key);
+    if (iValue != mScriptVariables.end())
+    {
+        return iValue->second;
+    } else {
+        return std::string();
+    }
+}
+
+void GameState::setVariable(const std::string &key, const std::string &value)
+{
+    mScriptVariables[key] = value;
+    accountHandler->updateWorldVar(key, value);
+}
+
+void GameState::setVariableFromDbserver(const std::string &key, const std::string &value)
+{
+    mScriptVariables[key] = value ;
+}