fix some items not being rendered in npc trade

src/otclient/core/item.cpp

@@ -73,7 +73,10 @@ void Item::draw(const Point& dest, float scaleFactor, bool animate)
         yPattern = m_position.y % getNumPatternsY();
         zPattern = m_position.z % getNumPatternsZ();
     } else if(isStackable() && getNumPatternsX() == 4 && getNumPatternsY() == 2) {
-        if(m_countOrSubType < 5) {
+        if(m_countOrSubType <= 0) {
+            xPattern = 0;
+            yPattern = 0;
+        } else if(m_countOrSubType < 5) {
             xPattern = m_countOrSubType-1;
             yPattern = 0;
         } else if(m_countOrSubType < 10) {

src/otclient/net/protocolgameparse.cpp

@@ -506,8 +506,11 @@ void ProtocolGame::parseOpenNpcTrade(InputMessage& msg)
     std::vector<std::tuple<ItemPtr, std::string, int, int, int>> items;
     int listCount = msg.getU8();
     for(int i = 0; i < listCount; ++i) {
-        ItemPtr item = Item::create(msg.getU16());
-        item->setCountOrSubType(msg.getU8());
+        uint16 itemId = msg.getU16();
+        uint8 count = msg.getU8();
+
+        ItemPtr item = Item::create(itemId);
+        item->setCountOrSubType(count);
 
         std::string name = msg.getString();
         int weight = msg.getU32();