Update overworld map accessors

src/app/zelda3/overworld.h

@@ -191,6 +191,9 @@ class Overworld : public SharedROM, public core::ExperimentFlags {
   absl::Status SaveMap16Tiles();
   absl::Status SaveMap32Tiles();
 
+  auto overworld_map(int i) const { return overworld_maps_[i]; }
+  auto mutable_overworld_map(int i) { return &overworld_maps_[i]; }
+
   auto Sprites(int state) const { return all_sprites_[state]; }
   auto AreaGraphics() const {
     return overworld_maps_[current_map_].AreaGraphics();

src/app/zelda3/overworld_map.cc

@@ -348,7 +348,7 @@ void OverworldMap::LoadPalette() {
   int previousSprPalId =
       index_ > 0 ? rom_[overworldSpritePalette + parent_ - 1] : 0;
 
-  area_palette_ = std::min(area_palette_, 0xA3);
+  area_palette_ = std::min((int)area_palette_, 0xA3);
 
   uchar pal0 = 0;
   uchar pal1 = rom_[rom_.version_constants().overworldMapPaletteGroup +

src/app/zelda3/overworld_map.h

@@ -24,6 +24,7 @@ static constexpr int kTileOffsets[] = {0, 8, 4096, 4104};
 
 class OverworldMap {
  public:
+  OverworldMap() = default;
   OverworldMap(int index, ROM& rom, std::vector<gfx::Tile16>& tiles16);
 
   absl::Status BuildMap(int count, int game_state, int world, uchar* map_parent,
@@ -38,6 +39,12 @@ class OverworldMap {
   auto IsInitialized() const { return initialized_; }
   auto Parent() const { return parent_; }
 
+  auto mutable_area_graphics() { return &area_graphics_; }
+  auto mutable_area_palette() { return &area_palette_; }
+  auto mutable_sprite_graphics(int i) { return &sprite_graphics_[i]; }
+  auto mutable_sprite_palette(int i) { return &sprite_palette_[i]; }
+  auto mutable_message_id() { return &message_id_; }
+
  private:
   void LoadAreaInfo();
 
@@ -61,9 +68,9 @@ class OverworldMap {
   int parent_ = 0;
   int index_ = 0;
   int world_ = 0;
-  int message_id_ = 0;
-  int area_graphics_ = 0;
-  int area_palette_ = 0;
+  uint8_t message_id_ = 0;
+  uint8_t area_graphics_ = 0;
+  uint8_t area_palette_ = 0;
   int game_state_ = 0;
 
   int world_index_ = 0;