dungeon_selection_edit.h

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#ifndef YAZE_APP_EDITOR_DUNGEON_DUNGEON_SELECTION_EDIT_H_
#define YAZE_APP_EDITOR_DUNGEON_DUNGEON_SELECTION_EDIT_H_
 
#include <cstddef>
#include <cstdint>
#include <optional>
#include <vector>
 
#include "absl/status/statusor.h"
#include "app/editor/dungeon/interaction/interaction_context.h"
 
namespace yaze::editor {
 
// Authored fields only: snapshots never retain borrowed sprite preview buffers.
struct DungeonSpriteSnapshot {
  uint8_t id;
  int x, y, subtype, layer, key_drop;
  bool deleted;
  bool operator==(const DungeonSpriteSnapshot&) const = default;
};
 
inline constexpr uint8_t kSelectionObjects = 1;
inline constexpr uint8_t kSelectionDoors = 2;
inline constexpr uint8_t kSelectionSprites = 4;
inline constexpr uint8_t kSelectionItems = 8;
 
struct DungeonSelectionEditState {
  std::vector<zelda3::RoomObject> objects;
  std::vector<chest_data> chests;
  std::vector<zelda3::Room::Door> doors;
  std::vector<DungeonSpriteSnapshot> sprites;
  std::vector<zelda3::PotItem> items;
  std::vector<size_t> selected_objects;
  std::vector<SelectedEntity> selected_entities;
};
 
struct DungeonSelectionClipboard {
  std::vector<zelda3::RoomObject> objects;
  std::vector<std::optional<chest_data>> object_chests;
  std::vector<zelda3::Room::Door> doors;
  std::vector<DungeonSpriteSnapshot> sprites;
  std::vector<zelda3::PotItem> items;
  int origin_pixel_x = 0;
  int origin_pixel_y = 0;
  bool empty() const {
    return objects.empty() && doors.empty() && sprites.empty() && items.empty();
  }
};
 
enum class DungeonSelectionEditKind { kDelete, kDuplicate, kMove, kPaste };
 
struct DungeonSelectionEditRequest {
  DungeonSelectionEditKind kind = DungeonSelectionEditKind::kDelete;
  std::vector<size_t> objects;
  std::vector<SelectedEntity> entities;
  const DungeonSelectionClipboard* clipboard = nullptr;
  // Rigid pixel displacement, including paste relative to clipboard positions.
  int delta_x_pixels = 0;
  int delta_y_pixels = 0;
};
 
struct DungeonSelectionEditPlan {
  int room_id = -1;
  DungeonSelectionEditState before;
  DungeonSelectionEditState after;
  uint8_t domains = 0;
  DungeonSelectionEditKind kind = DungeonSelectionEditKind::kDelete;
  bool changed() const { return domains != 0; }
};
 
DungeonSelectionEditState CaptureDungeonSelectionEditState(
    const zelda3::Room& room);
 
uint8_t ChangedDungeonSelectionDomains(const DungeonSelectionEditState& before,
                                       const DungeonSelectionEditState& after);
 
// Pure planning: failed validation never changes room data, selection or history.
// Stream allocation and global chest-table preflight belong to the editor's
// existing persistence boundary; this planner does not write ROM bytes.
absl::StatusOr<DungeonSelectionEditPlan> PlanDungeonSelectionEdit(
    const zelda3::Room& room, const DungeonSelectionEditRequest& request);
 
absl::StatusOr<DungeonSelectionClipboard> CopyDungeonSelection(
    const zelda3::Room& room, const std::vector<size_t>& objects,
    const std::vector<SelectedEntity>& entities);
 
// Publish all requested data planes before the caller invalidates any renderer.
// Restoring history intentionally permits legacy values retained in snapshots.
void ApplyDungeonSelectionEditState(zelda3::Room& room,
                                    const DungeonSelectionEditState& state,
                                    uint8_t domains);
 
}  // namespace yaze::editor
 
#endif  // YAZE_APP_EDITOR_DUNGEON_DUNGEON_SELECTION_EDIT_H_