reorganize BB file loading abstractions

src/LevelTable.hh

@@ -19,7 +19,8 @@ struct PlayerStats {
   PlayerStats() noexcept;
 } __attribute__((packed));
 
-struct LevelTable { // from PlyLevelTbl.prs
+class LevelTable { // from PlyLevelTbl.prs
+public:
   struct LevelStats {
     uint8_t atp;
     uint8_t mst;
@@ -34,12 +35,18 @@ struct LevelTable { // from PlyLevelTbl.prs
     void apply(PlayerStats& ps) const;
   } __attribute__((packed));
 
-  PlayerStats base_stats[12];
-  le_uint32_t unknown[12];
-  LevelStats levels[12][200];
+  struct Table {
+    PlayerStats base_stats[12];
+    le_uint32_t unknown[12];
+    LevelStats levels[12][200];
+  } __attribute__((packed));
 
-  LevelTable(const std::string& filename, bool compressed);
+  LevelTable(std::shared_ptr<const std::string> data, bool compressed);
 
   const PlayerStats& base_stats_for_class(uint8_t char_class) const;
   const LevelStats& stats_for_level(uint8_t char_class, uint8_t level) const;
-} __attribute__((packed));
+
+private:
+  std::shared_ptr<const std::string> data;
+  const Table* table;
+};