Refactor Inventory class to remove inheritance from SharedRom and add ROM pointer management. Update LoadDungeonMapGfxFromBinary to simplify palette setting logic, enhancing code clarity and maintainability.

src/app/zelda3/screen/dungeon_map.cc

@@ -34,7 +34,7 @@ absl::Status LoadDungeonMapGfxFromBinary(Rom &rom,
         gfx_sheets.emplace_back(converted_bin.begin() + (i * 0x1000),
                                 converted_bin.begin() + ((i + 1) * 0x1000));
         sheets[i] = gfx::Bitmap(128, 32, 8, gfx_sheets[i]);
-        RETURN_IF_ERROR(sheets[i].SetPalette(*rom.mutable_dungeon_palette(3)));
+        sheets[i].SetPalette(*rom.mutable_dungeon_palette(3));
         core::Renderer::GetInstance().RenderBitmap(&sheets[i]);
       }
     } else {

src/app/zelda3/screen/inventory.h

@@ -13,7 +13,7 @@ namespace zelda3 {
 constexpr int kInventoryStart = 0x6564A;
 constexpr int kBowItemPos = 0x6F631;
 
-class Inventory : public SharedRom {
+class Inventory {
  public:
   absl::Status Create();
 
@@ -21,6 +21,9 @@ class Inventory : public SharedRom {
   auto &tilesheet() { return tilesheets_bmp_; }
   auto &palette() { return palette_; }
 
+  void LoadRom(Rom *rom) { rom_ = rom; }
+  auto rom() { return rom_; }
+
  private:
   absl::Status BuildTileset();
 
@@ -32,6 +35,7 @@ class Inventory : public SharedRom {
   gfx::Bitmap tilesheets_bmp_;
   gfx::SnesPalette palette_;
 
+  Rom *rom_;
   gui::Canvas canvas_;
   std::vector<gfx::TileInfo> tiles_;
 };