title_screen.h

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#ifndef YAZE_APP_ZELDA3_SCREEN_H
#define YAZE_APP_ZELDA3_SCREEN_H
 
#include "absl/status/status.h"
#include "app/gfx/core/bitmap.h"
#include "app/gfx/render/tilemap.h"
#include "app/gfx/types/snes_palette.h"
#include "app/gfx/types/snes_tile.h"
#include "rom/rom.h"
#include "zelda3/game_data.h"
 
namespace yaze {
namespace zelda3 {
 
class TitleScreen {
 public:
  absl::Status Create(Rom* rom, GameData* game_data = nullptr);
 
  // Clear ROM-derived logical state without moving queued Bitmap owners.
  void ResetForReload();
 
  // Accessors for layer data
  auto& bg1_buffer() { return tiles_bg1_buffer_; }
  auto& bg2_buffer() { return tiles_bg2_buffer_; }
  auto& oam_buffer() { return oam_data_; }
 
  // Mutable accessors for editing
  auto& mutable_bg1_buffer() { return tiles_bg1_buffer_; }
  auto& mutable_bg2_buffer() { return tiles_bg2_buffer_; }
 
  // Accessors for bitmaps
  auto& bg1_bitmap() { return tiles_bg1_bitmap_; }
  auto& bg2_bitmap() { return tiles_bg2_bitmap_; }
  auto& oam_bitmap() { return oam_bg_bitmap_; }
  auto& tiles8_bitmap() { return tiles8_bitmap_; }
  auto& composite_bitmap() { return title_composite_bitmap_; }
  auto& blockset() { return tile16_blockset_; }
 
  // Palette access
  auto& palette() { return palette_; }
 
  // Save changes back to ROM
  absl::Status Save(Rom* rom);
 
  absl::Status RenderBG1Layer();
 
  absl::Status RenderBG2Layer();
 
  absl::Status RenderCompositeLayer(bool show_bg1, bool show_bg2);
 
 private:
  absl::Status BuildTileset(Rom* rom);
 
  absl::Status LoadTitleScreen(Rom* rom);
 
  int pal_selected_ = 2;
 
  std::array<uint16_t, 0x1000> tiles_bg1_buffer_;  // BG1 tilemap (32x32 tiles)
  std::array<uint16_t, 0x1000> tiles_bg2_buffer_;  // BG2 tilemap (32x32 tiles)
 
  gfx::OamTile oam_data_[10];
 
  gfx::Bitmap tiles_bg1_bitmap_;        // Rendered BG1 layer
  gfx::Bitmap tiles_bg2_bitmap_;        // Rendered BG2 layer
  gfx::Bitmap oam_bg_bitmap_;           // Rendered OAM layer
  gfx::Bitmap tiles8_bitmap_;           // 8x8 tile graphics
  gfx::Bitmap title_composite_bitmap_;  // Composite BG1+BG2 with transparency
 
  gfx::Tilemap tile16_blockset_;   // 16x16 tile blockset
  gfx::SnesPalette palette_;       // Title screen palette
  GameData* game_data_ = nullptr;  // GameData for palette access
};
 
}  // namespace zelda3
}  // namespace yaze
 
#endif  // YAZE_APP_ZELDA3_SCREEN_H