add item 'uses-display' property

src/items/ItemDef.cpp

@@ -15,4 +15,6 @@ void ItemDef::cloneTo(ItemDef& dst) {
     dst.placingBlock = placingBlock;
     dst.scriptName = scriptName;
     dst.modelName = modelName;
+    dst.uses = uses;
+    dst.usesDisplay = usesDisplay;
 }

src/items/ItemDef.hpp

@@ -19,6 +19,13 @@ enum class ItemIconType {
     BLOCK,   // block preview: icon is string block id
 };
 
+enum class ItemUsesDisplay {
+    NONE,     // uses count is not displayed
+    RELATION, // uses count is displayed as `remain/default` relation
+    VBAR,     // uses count is displayed as vertical bar without counter
+    DEFAULT = VBAR,
+};
+
 struct ItemDef {
     /// @brief Item string id (with prefix included)
     std::string const name;
@@ -40,6 +47,9 @@ struct ItemDef {
     /// @brief Default item uses count
     int16_t uses = -1;
 
+    /// @brief Item uses count display mode
+    ItemUsesDisplay usesDisplay = ItemUsesDisplay::DEFAULT;
+
     ItemIconType iconType = ItemIconType::SPRITE;
     std::string icon = "blocks:notfound";