Chapters are Character-mapped for unique books

data/json/items/book/abstract.json

@@ -52,6 +52,14 @@
     "copy-from": "book_fict_tpl",
     "melee_damage": { "bash": 1 }
   },
+  {
+    "abstract": "book_fict_soft_collection_tpl",
+    "type": "BOOK",
+    "copy-from": "book_fict_soft_tpl",
+    "name": { "str": "paperback novel", "str_pl": "paperbacks" },
+    "description": "Paperback fiction novel generic collection",
+    "generic": true
+  },
   {
     "abstract": "book_nonf_hard_tpl",
     "type": "BOOK",

data/json/items/book/misc.json

@@ -88,6 +88,7 @@
     "intelligence": 10,
     "time": "26 m",
     "chapters": 40,
+    "generic": true,
     "fun": 3
   },
   {
@@ -170,6 +171,7 @@
     "color": "pink",
     "time": "10 m",
     "chapters": 4,
+    "generic": true,
     "fun": 1
   },
   {
@@ -194,7 +196,7 @@
     "type": "BOOK",
     "name": { "str": "adventure novel" },
     "description": "The stirring tale of a race against time, in search of a lost city located in the heart of the African continent.",
-    "copy-from": "book_fict_soft_tpl",
+    "copy-from": "book_fict_soft_collection_tpl",
     "price": "8 USD 50 cent",
     "price_postapoc": "50 cent",
     "time": "20 m",
@@ -205,7 +207,7 @@
     "type": "BOOK",
     "name": { "str": "buddy novel" },
     "description": "A gripping tale of two friends struggling to survive on the streets of New York City.",
-    "copy-from": "book_fict_soft_tpl",
+    "copy-from": "book_fict_soft_collection_tpl",
     "weight": "244 g",
     "volume": "500 ml",
     "price": "6 USD 50 cent",
@@ -215,7 +217,7 @@
     "id": "novel_crime",
     "type": "BOOK",
     "name": { "str": "crime novel" },
-    "copy-from": "book_fict_soft_tpl",
+    "copy-from": "book_fict_soft_collection_tpl",
     "description": "After their diamond heist goes wrong, the surviving criminals begin to suspect that one of them is a police informant.",
     "intelligence": 6,
     "time": "20 m",
@@ -252,7 +254,7 @@
     "type": "BOOK",
     "name": { "str": "drama novel" },
     "description": "A real book for real adults.",
-    "copy-from": "book_fict_soft_tpl",
+    "copy-from": "book_fict_soft_collection_tpl",
     "intelligence": 7,
     "time": "25 m",
     "chapters": 28,
@@ -263,7 +265,7 @@
     "type": "BOOK",
     "name": { "str": "erotic novel" },
     "description": "A hackneyed fictional narrative concealing low-grade literary smut.",
-    "copy-from": "book_fict_soft_tpl",
+    "copy-from": "book_fict_soft_collection_tpl",
     "weight": "200 g",
     "volume": "500 ml",
     "time": "18 m",
@@ -274,7 +276,7 @@
     "type": "BOOK",
     "name": { "str": "experimental novel" },
     "description": "A bizarre play about the philosophy of existential absurdity.  Or maybe it's about two guys waiting for their friend to show up.  It's confusing.",
-    "copy-from": "book_fict_soft_tpl",
+    "copy-from": "book_fict_soft_collection_tpl",
     "weight": "142 g",
     "volume": "500 ml",
     "intelligence": 7,
@@ -286,7 +288,7 @@
     "type": "BOOK",
     "name": { "str": "fantasy novel" },
     "description": "Basic sword & sorcery.",
-    "copy-from": "book_fict_soft_tpl",
+    "copy-from": "book_fict_soft_collection_tpl",
     "weight": "227 g",
     "volume": "1 L",
     "intelligence": 7,
@@ -300,7 +302,7 @@
     "type": "BOOK",
     "name": { "str": "horror novel" },
     "description": "Maybe not the best reading material considering the situation.",
-    "copy-from": "book_fict_soft_tpl",
+    "copy-from": "book_fict_soft_collection_tpl",
     "weight": "227 g",
     "intelligence": 7,
     "time": "18 m",
@@ -312,7 +314,7 @@
     "type": "BOOK",
     "name": { "str": "mystery novel" },
     "description": "A detective investigates an unusual murder in a secluded location.",
-    "copy-from": "book_fict_soft_tpl",
+    "copy-from": "book_fict_soft_collection_tpl",
     "intelligence": 7,
     "time": "18 m",
     "chapters": 28,
@@ -323,7 +325,7 @@
     "type": "BOOK",
     "name": { "str": "road novel" },
     "description": "A tale about a group of friends who wander the USA in the 1960s against a backdrop of jazz, poetry and drug use.",
-    "copy-from": "book_fict_soft_tpl",
+    "copy-from": "book_fict_soft_collection_tpl",
     "weight": "244 g",
     "volume": "500 ml",
     "time": "20 m",
@@ -345,7 +347,7 @@
     "type": "BOOK",
     "name": { "str": "romance novel" },
     "description": "Drama and mild smut.",
-    "copy-from": "book_fict_soft_tpl"
+    "copy-from": "book_fict_soft_collection_tpl"
   },
   {
     "id": "paperback_romance_circuses",
@@ -497,7 +499,7 @@
     "type": "BOOK",
     "name": { "str": "spy novel" },
     "description": "A tale of intrigue and espionage among Nazis, no, Commies, no, Iraqis!",
-    "copy-from": "book_fict_soft_tpl",
+    "copy-from": "book_fict_soft_collection_tpl",
     "intelligence": 5,
     "time": "18 m",
     "chapters": 20,
@@ -524,7 +526,7 @@
     "description": "An exciting seventeenth century tale of how an enslaved Irish doctor and his comrades-in-chains escape and become heroic pirates of the Robin Hood variety.",
     "weight": "582 g",
     "volume": "750 ml",
-    "copy-from": "book_fict_soft_tpl",
+    "copy-from": "book_fict_soft_collection_tpl",
     "intelligence": 7,
     "time": "20 m",
     "chapters": 28,
@@ -582,7 +584,7 @@
     "type": "BOOK",
     "name": { "str": "war novel" },
     "description": "A thrilling narrative of survival in a prisoner of war camp during the Second World War, filled with riveting subplots about rat farming and dysentery.",
-    "copy-from": "book_fict_soft_tpl",
+    "copy-from": "book_fict_soft_collection_tpl",
     "weight": "686 g",
     "price_postapoc": "50 cent",
     "intelligence": 7,
@@ -604,7 +606,7 @@
     "type": "BOOK",
     "name": { "str": "western novel" },
     "description": "The classic tale of a gunfighting stranger who comes to a small settlement and is hired to help the townsfolk defend themselves from a band of marauding outlaws.",
-    "copy-from": "book_fict_soft_tpl",
+    "copy-from": "book_fict_soft_collection_tpl",
     "intelligence": 5,
     "time": "20 m",
     "chapters": 28,
@@ -680,6 +682,7 @@
     "intelligence": 4,
     "time": "1 m",
     "chapters": 200,
+    "generic": true,
     "fun": -5,
     "melee_damage": { "bash": 2 }
   },
@@ -698,6 +701,7 @@
     "color": "light_gray",
     "time": "10 m",
     "chapters": 4,
+    "generic": true,
     "fun": 1,
     "flags": [ "INSPIRATIONAL" ]
   },
@@ -717,6 +721,7 @@
     "intelligence": 9,
     "time": "18 m",
     "chapters": 36,
+    "generic": true,
     "fun": 2
   },
   {
@@ -735,6 +740,7 @@
     "intelligence": 9,
     "time": "18 m",
     "chapters": 36,
+    "generic": true,
     "fun": 2
   },
   {
@@ -825,6 +831,7 @@
     "intelligence": 7,
     "time": "48 m",
     "chapters": 28,
+    "generic": true,
     "fun": 5
   },
   {
@@ -843,6 +850,7 @@
     "intelligence": 6,
     "time": "18 m",
     "chapters": 24,
+    "generic": true,
     "fun": 3
   },
   {
@@ -978,6 +986,7 @@
     "intelligence": 7,
     "time": "28 m",
     "chapters": 40,
+    "generic": true,
     "fun": 3
   },
   {
@@ -1073,6 +1082,7 @@
     "intelligence": 7,
     "time": "28 m",
     "chapters": 40,
+    "generic": true,
     "fun": 4
   },
   {

doc/JSON/JSON_INFO.md

@@ -3905,6 +3905,7 @@ Books can be defined like this:
 "fun" : -2,           // Morale bonus/penalty for reading
 "skill" : "computer", // Skill raised
 "chapters" : 4,       // Number of chapters (for fun only books), each reading "consumes" a chapter. Books with no chapters left are less fun (because the content is already known to the character).
+"generic": false,     // This book counts chapters by item instance instead of by type (this book represents a generic variety of books, like "book of essays")
 "required_level" : 2,  // Minimum skill level required to learn
 "martial_art": "style_mma", // Martial art learned from this book; incompatible with `skill`
 "proficiencies": [    // Having this book mitigate lack of proficiency, required for crafting 

src/character.h

@@ -2313,6 +2313,8 @@ class Character : public Creature, public visitable
         /** Calculates the total fun bonus relative to this character's traits and chapter progress */
         bool fun_to_read( const item &book ) const;
         int book_fun_for( const item &book, const Character &p ) const;
+        /** The number of chapters remaining for each book itype */
+        std::map<itype_id, int> book_chapters;
 
         bool can_pickVolume( const item &it, bool safe = false, const item *avoid = nullptr,
                              bool ignore_pkt_settings = true ) const;

src/item.cpp

@@ -8851,7 +8851,7 @@ void item::set_browsed( bool browsed )
 
 bool item::is_ecopiable() const
 {
-    return has_flag( flag_E_COPIABLE ) || ( is_book() && get_chapters() == 0 );
+    return has_flag( flag_E_COPIABLE ) || ( is_book() && !type->book->generic );
 }
 
 bool item::efiles_all_browsed() const
@@ -10770,22 +10770,34 @@ int item::get_chapters() const
 
 int item::get_remaining_chapters( const Character &u ) const
 {
-    // NOLINTNEXTLINE(cata-translate-string-literal)
-    const std::string var = string_format( "remaining-chapters-%d", u.getID().get_value() );
-    return get_var( var, get_chapters() );
+    const itype_id &type = typeId();
+    if( is_book() && type->book->generic ) {
+        // NOLINTNEXTLINE(cata-translate-string-literal)
+        const std::string var = string_format( "remaining-chapters-%d", u.getID().get_value() );
+        return get_var( var, get_chapters() );
+    }
+    const std::map<itype_id, int> &book_chapters = u.book_chapters;
+    auto find_chapters = book_chapters.find( type );
+    if( find_chapters == book_chapters.end() ) {
+        return get_chapters();
+    }
+    return find_chapters->second;
 }
 
-void item::mark_chapter_as_read( const Character &u )
+void item::mark_chapter_as_read( Character &u )
 {
-    // NOLINTNEXTLINE(cata-translate-string-literal)
-    const std::string var = string_format( "remaining-chapters-%d", u.getID().get_value() );
-    if( type->book && type->book->chapters == 0 ) {
-        // books without chapters will always have remaining chapters == 0, so we don't need to store them
-        erase_var( var );
+    // books without chapters will always have remaining chapters == 0, so we don't need to store them
+    if( is_book() && get_chapters() == 0 ) {
+        return;
+    }
+    if( is_book() && type->book->generic ) {
+        // NOLINTNEXTLINE(cata-translate-string-literal)
+        const std::string var = string_format( "remaining-chapters-%d", u.getID().get_value() );
+        const int remain = std::max( 0, get_remaining_chapters( u ) - 1 );
+        set_var( var, remain );
         return;
     }
-    const int remain = std::max( 0, get_remaining_chapters( u ) - 1 );
-    set_var( var, remain );
+    u.book_chapters[typeId()] = std::max( 0, get_remaining_chapters( u ) - 1 );
 }
 
 std::set<recipe_id> item::get_saved_recipes() const

src/item.h

@@ -2407,7 +2407,7 @@ class item : public visitable
          * Mark one chapter of the book as read by the given player. May do nothing if the book has
          * no unread chapters. This is a per-character setting, see @ref get_remaining_chapters.
          */
-        void mark_chapter_as_read( const Character &u );
+        void mark_chapter_as_read( Character &u );
         /**
          * Returns recipes stored on the item (laptops, smartphones, sd cards etc)
          * Filters out !is_valid() recipes

src/item_factory.cpp

@@ -3264,6 +3264,7 @@ void islot_book::load( const JsonObject &jo )
     optional( jo, was_loaded, "skill", skill, skill_id::NULL_ID() );
     optional( jo, was_loaded, "martial_art", martial_art, matype_id::NULL_ID() );
     optional( jo, was_loaded, "chapters", chapters, 0 );
+    optional( jo, was_loaded, "generic", generic, false );
     optional( jo, was_loaded, "proficiencies", proficiencies );
     optional( jo, was_loaded, "scannable", is_scannable, true );
 }

src/itype.h

@@ -563,6 +563,11 @@ struct islot_book {
      * "To read" means getting 1 skill point, not all of them.
      */
     time_duration time = 0_turns;
+    /**
+     * This book counts chapters by item instance instead of by type
+     * (i.e. this book represents a generic variety of books, like "book of essays")
+     */
+    bool generic = false;
     /**
      * Fun books have chapters; after all are read, the book is less fun.
      */

src/savegame_json.cpp

@@ -1112,6 +1112,7 @@ void Character::load( const JsonObject &data )
     data.read( "male", male );
     data.read( "cash", cash );
     data.read( "recoil", recoil );
+    data.read( "book_chapters", book_chapters );
     data.read( "in_vehicle", in_vehicle );
     data.read( "last_sleep_check", last_sleep_check );
     if( data.read( "id", tmpid ) && tmpid.is_valid() ) {
@@ -1489,6 +1490,7 @@ void Character::store( JsonOut &json ) const
 
     json.member( "cash", cash );
     json.member( "recoil", recoil );
+    json.member( "book_chapters", book_chapters );
     json.member( "in_vehicle", in_vehicle );
     json.member( "id", getID() );