/*! --------------------------------------------------------------------

  \file   world.h

  \brief  Encapsulate game objects

  \author Roy Thompson
  \date   2002-11-09

// -------------------------------------------------------------------*/

#ifndef __WORLD_H__
#define __WORLD_H__

#include "game.h"
#include "skybox.h"
#include "enemyship.h"
#include "spacejunk.h"
#include <iostream.h>

struct Enemy {
  float damage;
  float speed;
  Math3d::M3d startPos;
  int killPoints;
};

struct Level {
  int numEnemies;
  Enemy *enemies;
};


//! convenience definition for the World singleton
#define theWorld World::getInstance()




//---------------------------------------------------------------------
//                            World
//
//! Class to encapsulate game objects
//
//---------------------------------------------------------------------
class World {
 public:
  World() {}
  virtual ~World() {}

  //! returns a handle to the singleton instance of World (use "theWorld")
  static World& getInstance() {
    if (!s_pWorld) s_pWorld = new World();
    return *s_pWorld;
  }

  //! Initialize the world
  bool Init(const char* skyboxPath);

  //! Render the world
  bool Render();

  void OrthoMode(int left, int top, int right, int bottom);
  void PerspectiveMode();

  //! update world state for single game loop iteration
  //  timeElapsed is in seconds
  void UpdateState(float timeElapsed);

  //  const CameraState& GetStartCamera() 
  //  { }//return _course.GetStart(player); }

  bool _ReadLevel(istream &is);

  void NewLevel(int levelNum);

  bool LevelComplete();

  int GetState() { return _state; }

  enum WorldState {
    COUNTDOWN = 0,
    PLAYING,
    GAMEOVER,
    WINNER,
    CHANGELEVEL,
    NUM_WORLDSTATES};
 protected: 
  //! singleton instance
  static World *s_pWorld;


 private:

  // Data
  void RestartLevel();
  void RestartGame();

  Skybox   _skybox;        //!< textured skybox cube

  EnemyShip  *_enemies;
  int _numEnemies;
  
  Spacejunk *_spacejunk;

  double _totalTime;
  float _lastShot;

  Level *_levels;  
  int _numLevels;
  int _curLevel;
  bool *_enemiesAlive;

  bool _levelChange;
  bool _justDied;

  int _state;
  float _countTime;

  int _livesLeft;
  int _score;


};

#endif  // __WORLD_H__