add 'tags.toml' file

src/logic/scripting/lua/libs/libitem.cpp

@@ -117,6 +117,21 @@ static int l_has_tag(lua::State* L) {
     return 0;
 }
 
+static int l_get_tags(lua::State* L) {
+    if (auto def = get_item_def(L,  1)) {
+        if (def->tags.empty())  {
+            return 0;
+        }
+        lua::createtable(L, 0, def->tags.size());
+        for (const auto& tag : def->tags) {
+            lua::pushboolean(L, true);
+            lua::setfield(L, tag);
+        }
+        return 1;
+    }
+    return 0;
+}
+
 const luaL_Reg itemlib[] = {
     {"index", lua::wrap<l_index>},
     {"name", lua::wrap<l_name>},
@@ -131,5 +146,6 @@ const luaL_Reg itemlib[] = {
     {"uses", lua::wrap<l_uses>},
     {"reload_script", lua::wrap<l_reload_script>},
     {"has_tag", lua::wrap<l_has_tag>},
+    {"__get_tags", lua::wrap<l_get_tags>},
     {NULL, NULL}
 };