Fix a stackpos bug in 9.6

src/otclient/creature.cpp

@@ -41,7 +41,7 @@
 
 Creature::Creature() : Thing()
 {
-    m_id = 1;
+    m_id = 0;
     m_healthPercent = 100;
     m_speed = 200;
     m_direction = Otc::South;

src/otclient/protocolcodes.h

@@ -226,7 +226,8 @@ namespace Proto {
         ClientMarketBrowse                  = 245, // 944
         ClientMarketCreate                  = 246, // 944
         ClientMarketCancel                  = 247, // 944
-        ClientMarketAccept                  = 248 // 944
+        ClientMarketAccept                  = 248, // 944
+        ClientAnswerModalDialog             = 249  // 960
     };
 
     enum ServerSpeakType {

src/otclient/protocolgameparse.cpp

@@ -442,13 +442,7 @@ void ProtocolGame::parseMapMoveWest(const InputMessagePtr& msg)
 void ProtocolGame::parseUpdateTile(const InputMessagePtr& msg)
 {
     Position tilePos = getPosition(msg);
-    int thingId = msg->peekU16();
-    if(thingId == 0xFF01) {
-        msg->getU16();
-    } else {
-        setTileDescription(msg, tilePos);
-        msg->getU16();
-    }
+    setTileDescription(msg, tilePos);
 }
 
 void ProtocolGame::parseTileAddThing(const InputMessagePtr& msg)

src/otclient/tile.cpp

@@ -163,6 +163,9 @@ ThingPtr Tile::addThing(const ThingPtr& thing, int stackPos)
         return nullptr;
     }
 
+    if(stackPos == 255)
+        stackPos = -1;
+
     // the items stackpos follows this order:
     // 0 - ground
     // 1 - ground borders