fix belts were not drawn

src/ui/GameWorldView.cpp

@@ -518,6 +518,21 @@ void GameWorldView::drawBuildings(QPainter& painter)
         }
     }
 
+    // Belt and splitter tiles (stored separately from regular buildings)
+    for (const BuildingSystem::BeltTileInfo& info : m_sim->buildings().allBeltTiles())
+    {
+        const std::map<BuildingType, BuildingVisuals>::const_iterator it =
+            m_visuals->buildings.find(info.type);
+        if (it == m_visuals->buildings.end()) { continue; }
+        const BuildingVisuals& bv = it->second;
+
+        painter.setPen(Qt::NoPen);
+        painter.fillRect(tileRect(info.tile), bv.fill);
+        painter.setPen(QPen(bv.outline, 1));
+        painter.setBrush(Qt::NoBrush);
+        painter.drawRect(tileRect(info.tile));
+    }
+
     painter.setOpacity(0.5);
     for (const ConstructionSite& s : m_sim->buildings().allSites())
     {