FR 2839627: notify when player has enough gold

The basics of a wish-list/shopping-list.  While in a shop the
shopping-list can be modified, and the player is notified as soon as
they have enough money to buy things on the shopping-list.

1 files changed, 55 insertions, 0 deletions

diff --git a/crawl-ref/source/shopping.h b/crawl-ref/source/shopping.h
index 0bbaae8457..b74d056899 100644
--- a/crawl-ref/source/shopping.h
+++ b/crawl-ref/source/shopping.h
@@ -26,4 +26,59 @@ std::string shop_name(const coord_def& where, bool add_stop);
 bool shoptype_identifies_stock(shop_type type);
 
 bool is_shop_item(const item_def &item);
+
+/////////////////////////////////////////////////////////////////////
+
+struct level_pos;
+
+class ShoppingList
+{
+public:
+    ShoppingList();
+
+    bool add_thing(const item_def &item, int cost, level_pos* pos = NULL);
+    bool add_thing(std::string desc, std::string buy_verb, int cost,
+                   level_pos* pos = NULL);
+
+    bool is_on_list(const item_def &item, level_pos* pos = NULL) const;
+    bool is_on_list(std::string desc, level_pos* pos = NULL) const;
+
+    bool del_thing(const item_def &item, level_pos* pos = NULL);
+    bool del_thing(std::string desc, level_pos* pos = NULL);
+
+    int size() const;
+
+    void move_things(const coord_def &src, const coord_def &dst);
+
+    void gold_changed(int old_amount, int new_amount);
+
+    void display_list();
+
+    void refresh();
+
+private:
+    CrawlVector* list;
+
+    int min_unbuyable_cost;
+    int min_unbuyable_idx;
+    int max_buyable_cost;
+    int max_buyable_idx;
+
+private:
+    int find_thing(const item_def &item, const level_pos &pos) const;
+    int find_thing(const std::string &desc, const level_pos &pos) const;
+
+    static       bool        thing_is_item(const CrawlHashTable& thing);
+    static const item_def&   get_thing_item(const CrawlHashTable& thing);
+    static       std::string get_thing_desc(const CrawlHashTable& thing);
+
+    static long      thing_cost(const CrawlHashTable& thing);
+    static level_pos thing_pos(const CrawlHashTable& thing);
+
+    static std::string name_thing(const CrawlHashTable& thing);
+    static std::string describe_thing(const CrawlHashTable& thing);
+};
+
+extern ShoppingList shopping_list;
+
 #endif