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level.h

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#ifndef __LEVEL_H
#define __LEVEL_H

/*
 * Notes:
 *
 *  Object pointers are maintained in a master list of objects,
 * "objects". However, they also appear in a hash, indexed by game
 * column, called "objcells_by_tilex". That allows quick access to
 * objects based on their position within the level. The hash is used
 * mostly to limit collision searches, and to only call objects that
 * are on the screen.
 */

class Level
{
private:
  int mission; 
  Object *obj_player;
  int width; 
  int height; 
  int nobjects;
  int maxnobjects;
  Tile ***tiles;
  Object **objects;
  ObjectCell **objcells_by_tilex; // see "Notes" above.
  GameTimer *game_timer;
  Input *input;
  
public:
  Level( string fname,  TileInfo **_tilesinfo, ObjectInfo **_objectsinfo, 
        GameTimer *_game_timer, ScoreManager *_score_manager, Input *_input );
  ~Level();
  void LoadMap( string fname );
  void AddObjectPos( Object*, int pos );
  void DeleteObjectPos( Object*, int pos );
  bool AddObject( Object* );
  void DeleteObject( Object* );
  bool CheckTileCollisions( Object*, Tile** );
  /* in  - object to check
   * out - tile hit, or NULL if edge
   */
  Object *CheckObjectCollisions( Object * );
  ObjectCell *RemoveObjectCell( ObjectCell *objcell );
  void TilesAction( int xl, int xr, int interval);
  void ObjectsAction( int xl, int xr );
  void PlayerAction();
  void DrawTiles( int xposition, Display *display );
  void DrawObjects( int xposition, Display *display );
  int GameStatus();
  void EndLevel() { mission = 1; }
  Object *GetPlayer();
  int GetWidth();
  int GetHeight();
};

#endif /* __LEVEL_H */

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