localize card links, add_link, remove_links

doc/function/add_link.txt

@@ -0,0 +1,18 @@
+Function: add_link
+
+--Usage--
+> add_link(input: card, selected_relation: "link type", linked_card: other_card, linked_relation: "link type")
+
+Links the input card and the linked_card together. The link is reciprocal if possible.
+
+(Adds the linked_card to the input card's links, and gives it the linked_relation. Adds the input card to the linked_card's links, and gives it the selected_relation.)
+
+Returns the linked_card, or nil if the linked_card was not found.
+
+--Parameters--
+! Parameter	Type				Description
+| @input@	[[type:card]] or [[type:string]]		One of the two cards we will link, or the uid of a card.
+| @selected_relation@	[[type:string]]		The type of link we will give to the input card.
+| @linked_card@	[[type:card]] or [[type:string]]		The other of the two cards we will link, or the uid of the other card.
+| @linked_relation@	[[type:string]]		The type of link we will give to the linked card.
+| @set@		[[type:set]]		The set in which to look for the other card. This can be omitted since 'set' is a predefined variable.

doc/function/get_cards_from_link.txt

@@ -1,13 +1,13 @@
 Function: get_cards_from_link
 
 --Usage--
-> get_cards_from_link(card: card, input: "link type")
+> get_cards_from_link(input: card, linked_relation: "link type")
 
 Inspects a given [[type:card]]'s links to find those of the given type, and returns an array containing the linked cards.
 Returns an empty array if no link of the given type, or no card was found.
 
 --Parameters--
 ! Parameter	Type				Description
-| @input@	[[type:string]]		The type of link we want to find.
+| @input@	[[type:card]]		The card whose links we'll inspect.
-| @card@	[[type:card]]		The card whose links we'll inspect.
+| @linked_relation@	[[type:string]]		The type of link we want to find.
-| @set@		[[type:set]]		The set in which to look. This can be omited since 'set' is a predefined variable.
+| @set@		[[type:set]]		The set in which to look. This can be omitted since 'set' is a predefined variable.

doc/function/has_link.txt

@@ -1,14 +1,14 @@
 Function: has_link
 
 --Usage--
-> has_link(card: card, "link type")
+> has_link(input: card, linked_relation: "link type")
 
 Inspects a given [[type:card]]'s links to find one of the given type.
 Returns true if such a link was found, false otherwise.
 
-Note that this function does not check if the linked card exists in the set. For that, use get_card_from_link.
+Note that this function does not check if the linked card exists in the set. For that, use get_cards_from_link.
 
 --Parameters--
 ! Parameter	Type				Description
-| @input@	[[type:string]]		The type of link we want to find.
+| @input@	[[type:card]]		The card whose links we'll inspect.
-| @card@	[[type:card]]		The card whose links we'll inspect.
+| @linked_relation@	[[type:string]]		The type of link we want to find.

doc/function/remove_links.txt

@@ -0,0 +1,16 @@
+Function: remove_links
+
+--Usage--
+> remove_links(input: card, linked_card: other card)
+> remove_links(input: card, linked_relation: "link type")
+
+Breaks the link between the input card and the linked_card. If a linked_relation is given, breaks the link between the input card and all cards with the linked_relation.
+
+Returns an array containing all the cards that were unlinked.
+
+--Parameters--
+! Parameter	Type				Description
+| @input@	[[type:card]] or [[type:string]]		One of the two cards we will unlink, or the uid of a card.
+| @linked_card@	[[type:card]] or [[type:string]]		The other of the two cards we will unlink, or the uid of the other card.
+| @linked_relation@	[[type:string]]		The type of link we will break.
+| @set@		[[type:set]]		The set in which to look for the other card. This can be omitted since 'set' is a predefined variable.

src/data/card.cpp

@@ -156,8 +156,7 @@ void Card::link(const Set& set, const vector<CardP>& linked_cards, const String&
       ss << all_missed_cards[pos]->identification();
       if (pos < all_missed_cards.size() - 1) ss << ", ";
     };
-    String wxString(ss.str().c_str(), wxConvUTF8);
+    queue_message(MESSAGE_WARNING, wxString(ss.str().c_str()));
-    queue_message(MESSAGE_WARNING, wxString);
   }
 }
 
@@ -284,7 +283,7 @@ vector<pair<CardP, String>> Card::getLinkedCards(const Set& set) {
   return getLinkedCards(set.cards);
 }
 
-CardP Card::getOtherFace(const vector<CardP>& cards) {
+CardP Card::getLinkedOtherFace(const vector<CardP>& cards) {
   unordered_set<String> faces;
   if (linked_relation_1 == _("Front Face") || linked_relation_1 == _("Back Face")) faces.emplace(linked_card_1);
   if (linked_relation_2 == _("Front Face") || linked_relation_2 == _("Back Face")) faces.emplace(linked_card_2);
@@ -295,8 +294,39 @@ CardP Card::getOtherFace(const vector<CardP>& cards) {
   }
   return nullptr;
 }
-CardP Card::getOtherFace(const Set& set) {
+CardP Card::getLinkedOtherFace(const Set& set) {
-  return getOtherFace(set.cards);
+  return getLinkedOtherFace(set.cards);
+}
+
+vector<CardP> Card::getLinkedCardsFromLink(const vector<CardP>& cards, const String& link, bool erase_if_no_card) {
+  vector<CardP> other_cards;
+  THIS_LINKED_PAIRS(this_linked_pairs);
+  FOR_EACH(this_linked_pair, this_linked_pairs) {
+    String& this_linked_uid = this_linked_pair.first.get();
+    String& this_linked_relation = this_linked_pair.second.get();
+    if (this_linked_relation == link) {
+      CardP other_card = getCardFromUid(cards, this_linked_uid);
+      if (other_card) other_cards.push_back(other_card);
+      else if (erase_if_no_card) {
+        this_linked_relation = _("");
+        this_linked_uid = _("");
+      }
+    }
+  }
+  return other_cards;
+}
+vector<CardP> Card::getLinkedCardsFromLink(const Set& set, const String& link, bool erase_if_no_card) {
+  return getLinkedCardsFromLink(set.cards, link, erase_if_no_card);
+}
+
+CardP Card::getCardFromUid(const vector<CardP>& cards, const String& uid) {
+  FOR_EACH(card, cards) {
+    if (card->uid == uid) return card;
+  }
+  return nullptr;
+}
+CardP Card::getCardFromUid(const Set& set, const String& uid) {
+  return getCardFromUid(set.cards, uid);
 }
 
 IndexMap<FieldP, ValueP>& Card::extraDataFor(const StyleSheet& stylesheet) {

src/data/card.hpp

@@ -91,8 +91,15 @@ public:
 
   vector<pair<CardP, String>> getLinkedCards(const vector<CardP>& cards);
   vector<pair<CardP, String>> getLinkedCards(const Set& set);
-  CardP getOtherFace(const vector<CardP>& cards);
+
-  CardP getOtherFace(const Set& set);
+  vector<CardP> getLinkedCardsFromLink(const vector<CardP>& cards, const String& link, bool erase_if_no_card);
+  vector<CardP> getLinkedCardsFromLink(const Set& set, const String& link, bool erase_if_no_card);
+
+  CardP getLinkedOtherFace(const vector<CardP>& cards);
+  CardP getLinkedOtherFace(const Set& set);
+
+  static CardP getCardFromUid(const vector<CardP>& cards, const String& uid);
+  static CardP getCardFromUid(const Set& set, const String& uid);
 
   /// Find a value in the data by name and type
   template <typename T> T& value(const String& name) {

src/data/card_link.cpp

@@ -0,0 +1,23 @@
+//+----------------------------------------------------------------------------+
+//| Description:  Magic Set Editor - Program to make Magic (tm) cards          |
+//| Copyright:    (C) Twan van Laarhoven and the other MSE developers          |
+//| License:      GNU General Public License 2 or later (see file COPYING)     |
+//+----------------------------------------------------------------------------+
+
+// ----------------------------------------------------------------------------- : Includes
+
+#include <util/prec.hpp>
+#include <data/card_link.hpp>
+
+// ----------------------------------------------------------------------------- : CardLink
+
+CardLink::CardLink() {}
+
+String CardLink::name() {
+  return selected.get() + _(" // ") + linked.get();
+}
+
+IMPLEMENT_REFLECTION_NO_GET_MEMBER(CardLink) {
+  REFLECT_LOCALIZED(selected);
+  REFLECT_LOCALIZED(linked);
+}

src/data/card_link.hpp

@@ -0,0 +1,30 @@
+//+----------------------------------------------------------------------------+
+//| Description:  Magic Set Editor - Program to make Magic (tm) cards          |
+//| Copyright:    (C) Twan van Laarhoven and the other MSE developers          |
+//| License:      GNU General Public License 2 or later (see file COPYING)     |
+//+----------------------------------------------------------------------------+
+
+#pragma once
+
+// ----------------------------------------------------------------------------- : Includes
+
+#include <util/prec.hpp>
+#include <util/reflect.hpp>
+#include <data/localized_string.hpp>
+
+DECLARE_POINTER_TYPE(CardLink);
+
+// ----------------------------------------------------------------------------- : Card Link
+
+/// Information on a link between two cards in a set
+class CardLink : public IntrusivePtrBase<CardLink> {
+public:
+  CardLink();
+  
+  LocalizedString selected; ///< Type of link for the selected card
+  LocalizedString linked;   ///< Type of link for the linked card
+  
+  String name();
+private:
+  DECLARE_REFLECTION();
+};

src/data/game.cpp

@@ -1,4 +1,4 @@
-//+----------------------------------------------------------------------------+
+//+----------------------------------------------------------------------------+
 //| Description:  Magic Set Editor - Program to make Magic (tm) cards          |
 //| Copyright:    (C) Twan van Laarhoven and the other MSE developers          |
 //| License:      GNU General Public License 2 or later (see file COPYING)     |
@@ -10,6 +10,7 @@
 #include <data/game.hpp>
 #include <data/field.hpp>
 #include <data/field/choice.hpp>
+#include <data/card_link.hpp>
 #include <data/keyword.hpp>
 #include <data/statistics.hpp>
 #include <data/pack.hpp>
@@ -123,6 +124,60 @@ void Game::validate(Version v) {
       }
     }
   }
+  // front face/back face card link
+  card_links.insert(card_links.begin(), make_intrusive<CardLink>());
+  card_links[0]->selected.default_ = _("Front Face");
+  card_links[0]->selected.translations = std::unordered_map<String, String>{
+    {_("ch-s"),  _("卡片正面")},
+    {_("ch-t"),  _("卡片正面")},
+    {_("da"),    _("Forside")},
+    {_("de"),    _("Vorderseite")},
+    {_("en"),    _("Front Face")},
+    {_("es"),    _("Cara frontal")},
+    {_("fr"),    _("Face Avant")},
+    {_("it"),    _("Fronte")},
+    {_("jp"),    _("カードの表面")},
+    {_("ko"),    _("카드 앞면")},
+    {_("pl"),    _("Przód")},
+    {_("pt-br"), _("Frente")},
+    {_("ru"),    _("Лицевая сторона")}
+  };
+  card_links[0]->linked.default_ = _("Back Face");
+  card_links[0]->linked.translations = std::unordered_map<String, String>{
+    {_("ch-s"),  _("卡片背面")},
+    {_("ch-t"),  _("卡片背面")},
+    {_("da"),    _("Bagside")},
+    {_("de"),    _("Rückseite")},
+    {_("en"),    _("Back Face")},
+    {_("es"),    _("Cara posterior")},
+    {_("fr"),    _("Face Arrière")},
+    {_("it"),    _("Retro")},
+    {_("jp"),    _("カードの裏面")},
+    {_("ko"),    _("카드 뒷면")},
+    {_("pl"),    _("Tył")},
+    {_("pt-br"), _("Verso")},
+    {_("ru"),    _("Обратная сторона")}
+  };
+  // localized card link names map
+  for (auto it = card_links.begin(); it != card_links.end(); ++it) {
+    CardLinkP link = *it;
+    String selected_default = link->selected.default_;
+    for (auto selected_it = link->selected.translations.begin(); selected_it != link->selected.translations.end(); selected_it++) {
+      String selected_tr = unified_form(selected_it->second);
+      if (card_links_alt_names.find(selected_tr) != card_links_alt_names.end() && card_links_alt_names[selected_tr] != selected_default) {
+        queue_message(MESSAGE_WARNING, _ERROR_3_("link duplicate", selected_tr, card_links_alt_names[selected_tr], selected_default));
+      }
+      card_links_alt_names.emplace(selected_tr, selected_default);
+    }
+    String linked_default = link->linked.default_;
+    for (auto linked_it = link->linked.translations.begin(); linked_it != link->linked.translations.end(); linked_it++) {
+      String linked_tr = unified_form(linked_it->second);
+      if (card_links_alt_names.find(linked_tr) != card_links_alt_names.end() && card_links_alt_names[linked_tr] != linked_default) {
+        queue_message(MESSAGE_WARNING, _ERROR_3_("link duplicate", linked_tr, card_links_alt_names[linked_tr], linked_default));
+      }
+      card_links_alt_names.emplace(linked_tr, linked_default);
+    }
+  }
 }
 
 void Game::initCardListColorScript() {

src/data/game.hpp

@@ -19,6 +19,7 @@ DECLARE_POINTER_TYPE(Style);
 DECLARE_POINTER_TYPE(Game);
 DECLARE_POINTER_TYPE(StatsDimension);
 DECLARE_POINTER_TYPE(StatsCategory);
+DECLARE_POINTER_TYPE(CardLink);
 DECLARE_POINTER_TYPE(PackType);
 DECLARE_POINTER_TYPE(KeywordParam);
 DECLARE_POINTER_TYPE(KeywordMode);
@@ -41,7 +42,7 @@ public:
   vector<FieldP>          set_fields;             ///< Fields for set information
   IndexMap<FieldP,StyleP> default_set_style;      ///< Default style for the set fields, because it is often the same
   vector<FieldP>          card_fields;            ///< Fields on each card
-  vector<String>          card_links;             ///< Possible links between cards
+  vector<CardLinkP>       card_links;             ///< Possible links between cards
   OptionalScript          card_list_color_script; ///< Script that determines the color of items in the card list
   OptionalScript          import_script;          ///< Script applied as the last step of the new_card function
   vector<String>          json_paths;             ///< Paths inside JSON files to find the card array
@@ -52,6 +53,7 @@ public:
   vector<AddCardsScriptP> add_cards_scripts;      ///< Scripts for adding multiple cards to the set
   vector<AutoReplaceP>    auto_replaces;          ///< Things to autoreplace in textboxes
   map<String,String>      card_fields_alt_names;  ///< Other names that fields might go by, for example in CSV files
+  map<String,String>      card_links_alt_names;   ///< Localized names that card links go by
   bool                    has_keywords;           ///< Does this game use keywords?
   OptionalScript          keyword_match_script;   ///< For the keyword editor
   vector<KeywordParamP>   keyword_parameter_types;///< Types of keyword parameters

src/gui/card_link_window.cpp

@@ -8,6 +8,7 @@
 
 #include <util/prec.hpp>
 #include <data/game.hpp>
+#include <data/card_link.hpp>
 #include <gui/card_link_window.hpp>
 #include <gui/control/select_card_list.hpp>
 #include <util/window_id.hpp>
@@ -25,9 +26,8 @@ CardLinkWindow::CardLinkWindow(Window* parent, const SetP& set, const CardP& sel
   linked_relation = new wxTextCtrl(this, wxID_ANY, _(""));
   relation_type = new wxChoice(this, ID_CARD_LINK_TYPE, wxDefaultPosition, wxDefaultSize, 0, nullptr);
   relation_type->Clear();
-  relation_type->Append("Front Face // Back Face");
   FOR_EACH(link, set->game->card_links) {
-    relation_type->Append(link);
+    relation_type->Append(link->name());
   }
   relation_type->Append(_LABEL_("custom link"));
   relation_type->SetSelection(0);
@@ -69,19 +69,18 @@ void CardLinkWindow::setSelection(const vector<CardP>& cards) {
   list->setSelection(cards);
 }
 void CardLinkWindow::setRelationType() {
-  int sel = relation_type->GetSelection();
+  int index = relation_type->GetSelection();
-  if (sel == relation_type->GetCount() - 1) { // Custom type
+  if (index >= set->game->card_links.size()) { // Custom type
     selected_relation->ChangeValue(_LABEL_("custom link selected"));
     selected_relation->Enable();
     linked_relation->ChangeValue(_LABEL_("custom link linked"));
     linked_relation->Enable();
   }
   else {
-    String relation = relation_type->GetString(sel);
+    CardLinkP link = set->game->card_links[index];
-    int delimiter_pos = relation.find("//");
+    selected_relation->ChangeValue(link->selected.get());
-    selected_relation->ChangeValue(relation.substr(0, delimiter_pos).Trim().Trim(false));
     selected_relation->Enable(false);
-    linked_relation->ChangeValue(delimiter_pos + 2 < relation.Length() ? relation.substr(delimiter_pos + 2).Trim().Trim(false) : _LABEL_("custom link undefined"));
+    linked_relation->ChangeValue(link->linked.get());
     linked_relation->Enable(false);
   }
 }
@@ -100,7 +99,14 @@ void CardLinkWindow::onOk(wxCommandEvent&) {
   // The linked_cards are the ones selected in this dialogue window
   vector<CardP> linked_cards;
   getSelection(linked_cards);
+  int index = relation_type->GetSelection();
+  if (index >= set->game->card_links.size()) { // Custom type
     set->actions.addAction(make_unique<LinkCardsAction>(*set, selected_card, linked_cards, selected_relation->GetValue(), linked_relation->GetValue()));
+  }
+  else {
+    CardLinkP link = set->game->card_links[index];
+    set->actions.addAction(make_unique<LinkCardsAction>(*set, selected_card, linked_cards, link->selected.default_, link->linked.default_));
+  }
   // Done
   EndModal(wxID_OK);
 }

src/gui/print_window.cpp

@@ -37,7 +37,7 @@ void PrintJob::measure_cards() {
     if (already_measured_cards.find(card) != already_measured_cards.end()) continue;
     already_measured_cards.emplace(card);
     card_layouts.push_back(measure_card(card));
-    CardP other_face = card->getOtherFace(cards);
+    CardP other_face = card->getLinkedOtherFace(cards);
     if (other_face && already_measured_cards.find(other_face) == already_measured_cards.end()) {
       already_measured_cards.emplace(other_face);
       card_layouts.push_back(measure_card(other_face));

src/script/functions/basic.cpp

@@ -778,76 +778,35 @@ SCRIPT_FUNCTION(get_card_export_settings) {
 SCRIPT_FUNCTION(get_card_from_uid) {
   SCRIPT_PARAM_C(Set*, set);
   SCRIPT_PARAM_C(String, input);
-  FOR_EACH(other_card, set->cards) {
+  SCRIPT_RETURN(Card::getCardFromUid(*set, input));
-    if (other_card->uid == input) SCRIPT_RETURN(other_card);
-  }
-  return script_nil;
 }
 
 SCRIPT_FUNCTION(get_cards_from_link) {
   SCRIPT_PARAM_C(Set*, set);
-  SCRIPT_PARAM_C(CardP, card);
+  SCRIPT_PARAM_C(ScriptValueP, input);
-  SCRIPT_PARAM_C(String, input);
+  CardP input_card = nullptr;
+  if (ScriptObject<CardP>* ic = dynamic_cast<ScriptObject<CardP>*>(input.get())) {
+    input_card = ic->getValue();
+  }
+  else if (input->type() == SCRIPT_STRING) {
+    input_card = Card::getCardFromUid(*set, input->toString());
+  }
+  if (!input_card) {
+    queue_message(MESSAGE_ERROR, _ERROR_("could not find input"));
+    return script_nil;
+  }
+  SCRIPT_PARAM(String, linked_relation);
   ScriptCustomCollectionP ret(new ScriptCustomCollection());
-  String trimmed_input = input.Trim().Trim(false);
+  vector<CardP> other_cards = input_card->getLinkedCardsFromLink(*set, linked_relation, true);
-  if (card->linked_relation_1 == trimmed_input) {
+  if (other_cards.size() > 0) {
-    String uid = card->linked_card_1;
+    FOR_EACH(other_card, other_cards) {
-    bool found = false;
-    FOR_EACH(other_card, set->cards) {
-      if (other_card->uid == uid) {
       ret->value.push_back(to_script(other_card));
-        found = true;
-        break;
     }
   }
-    if (!found) {
+  else if (set->game->card_links_alt_names.find(linked_relation) != set->game->card_links_alt_names.end()) {
-      card->linked_relation_1 = _("");
+    other_cards = input_card->getLinkedCardsFromLink(*set, set->game->card_links_alt_names[linked_relation], true);
-      card->linked_card_1 = _("");
+    FOR_EACH(other_card, other_cards) {
-    }
-  }
-  if (card->linked_relation_2 == trimmed_input) {
-    String uid = card->linked_card_2;
-    bool found = false;
-    FOR_EACH(other_card, set->cards) {
-      if (other_card->uid == uid) {
       ret->value.push_back(to_script(other_card));
-        found = true;
-        break;
-      }
-    }
-    if (!found) {
-      card->linked_relation_2 = _("");
-      card->linked_card_2 = _("");
-    }
-  }
-  if (card->linked_relation_3 == trimmed_input) {
-    String uid = card->linked_card_3;
-    bool found = false;
-    FOR_EACH(other_card, set->cards) {
-      if (other_card->uid == uid) {
-        ret->value.push_back(to_script(other_card));
-        found = true;
-        break;
-      }
-    }
-    if (!found) {
-      card->linked_relation_3 = _("");
-      card->linked_card_3 = _("");
-    }
-  }
-  if (card->linked_relation_4 == trimmed_input) {
-    String uid = card->linked_card_4;
-    bool found = false;
-    FOR_EACH(other_card, set->cards) {
-      if (other_card->uid == uid) {
-        ret->value.push_back(to_script(other_card));
-        found = true;
-        break;
-      }
-    }
-    if (!found) {
-      card->linked_relation_4 = _("");
-      card->linked_card_4 = _("");
     }
   }
   return ret;
@@ -855,91 +814,129 @@ SCRIPT_FUNCTION(get_cards_from_link) {
 
 SCRIPT_FUNCTION(get_front_face) {
   SCRIPT_PARAM_C(Set*, set);
-  SCRIPT_PARAM_C(CardP, input);
+  SCRIPT_PARAM_C(ScriptValueP, input);
-  if (input->linked_relation_1 == _("Front Face")) {
+  CardP input_card = nullptr;
-    String uid = input->linked_card_1;
+  if (ScriptObject<CardP>* ic = dynamic_cast<ScriptObject<CardP>*>(input.get())) {
-    FOR_EACH(other_card, set->cards) {
+    input_card = ic->getValue();
-      if (other_card->uid == uid) SCRIPT_RETURN(other_card);
   }
-    input->linked_relation_1 = _("");
+  else if (input->type() == SCRIPT_STRING) {
-    input->linked_card_1 = _("");
+    input_card = Card::getCardFromUid(*set, input->toString());
-  }
-  if (input->linked_relation_2 == _("Front Face")) {
-    String uid = input->linked_card_2;
-    FOR_EACH(other_card, set->cards) {
-      if (other_card->uid == uid) SCRIPT_RETURN(other_card);
-    }
-    input->linked_relation_2 = _("");
-    input->linked_card_2 = _("");
-  }
-  if (input->linked_relation_3 == _("Front Face")) {
-    String uid = input->linked_card_3;
-    FOR_EACH(other_card, set->cards) {
-      if (other_card->uid == uid) SCRIPT_RETURN(other_card);
-    }
-    input->linked_relation_3 = _("");
-    input->linked_card_3 = _("");
-  }
-  if (input->linked_relation_4 == _("Front Face")) {
-    String uid = input->linked_card_4;
-    FOR_EACH(other_card, set->cards) {
-      if (other_card->uid == uid) SCRIPT_RETURN(other_card);
-    }
-    input->linked_relation_4 = _("");
-    input->linked_card_4 = _("");
   }
+  if (!input_card) {
+    queue_message(MESSAGE_ERROR, _ERROR_("could not find input"));
     return script_nil;
   }
+  vector<CardP> other_cards = input_card->getLinkedCardsFromLink(*set, "Front Face", true);
+  if (other_cards.size() == 0) return script_nil;
+  if (other_cards.size() > 1) queue_message(MESSAGE_WARNING, _ERROR_1_("multiple front faces", input_card->identification()));
+  SCRIPT_RETURN(other_cards[0]);
+}
 
 SCRIPT_FUNCTION(get_back_face) {
   SCRIPT_PARAM_C(Set*, set);
-  SCRIPT_PARAM_C(CardP, input);
+  SCRIPT_PARAM_C(ScriptValueP, input);
-  if (input->linked_relation_1 == _("Back Face")) {
+  CardP input_card = nullptr;
-    String uid = input->linked_card_1;
+  if (ScriptObject<CardP>* ic = dynamic_cast<ScriptObject<CardP>*>(input.get())) {
-    FOR_EACH(other_card, set->cards) {
+    input_card = ic->getValue();
-      if (other_card->uid == uid) SCRIPT_RETURN(other_card);
   }
-    input->linked_relation_1 = _("");
+  else if (input->type() == SCRIPT_STRING) {
-    input->linked_card_1 = _("");
+    input_card = Card::getCardFromUid(*set, input->toString());
-  }
-  if (input->linked_relation_2 == _("Back Face")) {
-    String uid = input->linked_card_2;
-    FOR_EACH(other_card, set->cards) {
-      if (other_card->uid == uid) SCRIPT_RETURN(other_card);
-    }
-    input->linked_relation_2 = _("");
-    input->linked_card_2 = _("");
-  }
-  if (input->linked_relation_3 == _("Back Face")) {
-    String uid = input->linked_card_3;
-    FOR_EACH(other_card, set->cards) {
-      if (other_card->uid == uid) SCRIPT_RETURN(other_card);
-    }
-    input->linked_relation_3 = _("");
-    input->linked_card_3 = _("");
-  }
-  if (input->linked_relation_4 == _("Back Face")) {
-    String uid = input->linked_card_4;
-    FOR_EACH(other_card, set->cards) {
-      if (other_card->uid == uid) SCRIPT_RETURN(other_card);
-    }
-    input->linked_relation_4 = _("");
-    input->linked_card_4 = _("");
   }
+  if (!input_card) {
+    queue_message(MESSAGE_ERROR, _ERROR_("could not find input"));
     return script_nil;
   }
+  vector<CardP> other_cards = input_card->getLinkedCardsFromLink(*set, "Back Face", true);
+  if (other_cards.size() == 0) return script_nil;
+  if (other_cards.size() > 1) queue_message(MESSAGE_WARNING, _ERROR_1_("multiple back faces", input_card->identification()));
+  SCRIPT_RETURN(other_cards[0]);
+}
+
+SCRIPT_FUNCTION(add_link) {
+  SCRIPT_PARAM_C(Set*, set);
+  SCRIPT_PARAM_C(ScriptValueP, input);
+  CardP input_card = nullptr;
+  if (ScriptObject<CardP>* ic = dynamic_cast<ScriptObject<CardP>*>(input.get())) {
+    input_card = ic->getValue();
+  }
+  else if (input->type() == SCRIPT_STRING) {
+    input_card = Card::getCardFromUid(*set, input->toString());
+  }
+  if (!input_card) {
+    queue_message(MESSAGE_ERROR, _ERROR_("could not find input"));
+    return script_nil;
+  }
+  SCRIPT_PARAM(ScriptValueP, linked_card);
+  CardP other_card = nullptr;
+  if (ScriptObject<CardP>* c = dynamic_cast<ScriptObject<CardP>*>(linked_card.get())) {
+    other_card = c->getValue();
+  }
+  else if (linked_card->type() == SCRIPT_STRING) {
+    other_card = Card::getCardFromUid(*set, linked_card->toString());
+  }
+  if (!other_card) {
+    queue_message(MESSAGE_WARNING, _ERROR_("could not find linked"));
+    return script_nil;
+  }
+  SCRIPT_PARAM(String, selected_relation);
+  SCRIPT_PARAM(String, linked_relation);
+  input_card->link(*set, other_card, selected_relation, linked_relation);
+  SCRIPT_RETURN(other_card);
+}
+
+SCRIPT_FUNCTION(remove_links) {
+  SCRIPT_PARAM_C(Set*, set);
+  ScriptCustomCollectionP ret(new ScriptCustomCollection());
+  SCRIPT_PARAM_C(ScriptValueP, input);
+  CardP input_card = nullptr;
+  if (ScriptObject<CardP>* ic = dynamic_cast<ScriptObject<CardP>*>(input.get())) {
+    input_card = ic->getValue();
+  }
+  else if (input->type() == SCRIPT_STRING) {
+    input_card = Card::getCardFromUid(*set, input->toString());
+  }
+  if (!input_card) {
+    queue_message(MESSAGE_ERROR, _ERROR_("could not find input"));
+    return ret;
+  }
+  vector<CardP> other_cards;
+  SCRIPT_PARAM_DEFAULT(ScriptValueP, linked_card, script_nil);
+  if (linked_card != script_nil) {
+    CardP other_card = nullptr;
+    if (ScriptObject<CardP>* c = dynamic_cast<ScriptObject<CardP>*>(linked_card.get())) {
+      other_card = c->getValue();
+    }
+    else if (linked_card->type() == SCRIPT_STRING) {
+      other_card = Card::getCardFromUid(*set, linked_card->toString());
+    }
+    if (!other_card) {
+      queue_message(MESSAGE_WARNING, _ERROR_("could not find linked"));
+    }
+    else other_cards.push_back(other_card);
+  }
+  SCRIPT_PARAM_DEFAULT(ScriptValueP, linked_relation, script_nil);
+  if (linked_relation != script_nil) {
+    if (linked_relation->type() == SCRIPT_STRING) {
+      vector<CardP> other_other_cards = input_card->getLinkedCardsFromLink(*set, linked_relation->toString(), true);
+      other_cards.insert(other_cards.end(), other_other_cards.begin(), other_other_cards.end());
+    }
+  }
+  input_card->unlink(other_cards);
+  FOR_EACH(other_card, other_cards) {
+    ret->value.push_back(to_script(other_card));
+  }
+  return ret;
+}
 
 SCRIPT_FUNCTION(has_link) {
-  SCRIPT_PARAM_C(CardP, card);
+  SCRIPT_PARAM_C(CardP, input);
-  SCRIPT_PARAM_C(String, input);
+  SCRIPT_PARAM(String, linked_relation);
-  String trimmed_input = input.Trim().Trim(false);
+  SCRIPT_RETURN(
-  if (
+    input->linked_relation_1 == linked_relation ||
-    card->linked_relation_1 == trimmed_input ||
+    input->linked_relation_2 == linked_relation ||
-    card->linked_relation_2 == trimmed_input ||
+    input->linked_relation_3 == linked_relation ||
-    card->linked_relation_3 == trimmed_input ||
+    input->linked_relation_4 == linked_relation
-    card->linked_relation_4 == trimmed_input
+  );
-  ) SCRIPT_RETURN(true);
-  SCRIPT_RETURN(false);
 }
 
 // ----------------------------------------------------------------------------- : Keywords
@@ -1045,6 +1042,8 @@ void init_script_basic_functions(Context& ctx) {
   ctx.setVariable(_("get_back_face"),             script_get_back_face);
   ctx.setVariable(_("get_front_face"),            script_get_front_face);
   ctx.setVariable(_("has_link"),                  script_has_link);
+  ctx.setVariable(_("add_link"),                  script_add_link);
+  ctx.setVariable(_("remove_links"),              script_remove_links);
   // math
   ctx.setVariable(_("abs"),                       script_abs);
   ctx.setVariable(_("random_real"),               script_random_real);

src/util/string.cpp

@@ -137,7 +137,7 @@ void uncanonical_name_form_in_place(String& str) {
   }
 }
 
-String unified_form(String& str) {
+String unified_form(String str) {
   str = trim(str);
   for (String::iterator it = str.begin(); it != str.end(); ++it) {
     if (*it == ' ') *it = '_';

src/util/string.hpp

@@ -244,7 +244,7 @@ inline String uncanonical_name_form(String s) {
 }
 
 /// Convert a field name to canonical form, then to lower case, then trim it
-String unified_form(String&);
+String unified_form(String);
 
 /// Convert a field name to a string that can be shown to the user
 String name_to_caption(const String&);