source: orxonox.OLD/trunk/src/story_entities/game_world.h @ 7290

/*!
 * @file game_world.h
 *  container for all game worlds (singleplayers, multiplayers..)
 */

#ifndef _GAME_WORLD_H
#define _GAME_WORLD_H


#include "story_entity.h"
#include "game_world_data.h"

#include <SDL_thread.h>

class Shell;
class WorldEntity;

/** How many frames time values to keep
 * The higher the value the smoother the result is...
 * Don't make it 0 or less :)
 */
#define TICK_SMOOTH_VALUE 10

//! The game world
/**
 *  this class initializes everything that should be displayed inside of the current level.
 *  it is the main driving factor during gameplay.
 */
class GameWorld : public StoryEntity
{

  public:
    GameWorld ();
    virtual ~GameWorld ();

    virtual void loadParams(const TiXmlElement* root);

    /* functions from story-entity */
    virtual ErrorMessage init();
    virtual ErrorMessage loadData();
    virtual ErrorMessage unloadData();

    virtual bool start();
    virtual bool stop();
    virtual bool pause();
    virtual bool resume();
    virtual void run();

    /**  this returns the current game time @returns elapsed game time     */
    inline double getGameTime() { return this->gameTime; }
    /** sets the game speed @param speed speed of the Game */
    inline void setSpeed(float speed) { this->speed = speed; };
    /**  returns the track path of this world @returns the track path */

    static void togglePNodeVisibility();
    static void toggleBVVisibility();

    static int createAudioThread(void* GameWorld);


    inline void setSky(WorldEntity* sky) { this->dataTank->sky = sky; }


  protected:
    /* world - running functions */
    virtual void synchronize();
    virtual void handleInput();
    virtual void tick(std::list<WorldEntity*> worldEntity, float dt);
    virtual void tick();
    virtual void update();
    virtual void collide();
    virtual void draw();
    virtual void display();


  private:
    void displayLoadScreen();
    void releaseLoadScreen();


  protected:
    SDL_Thread*         audioThread;
    GameWorldData*      dataTank;                     //!< reference to the GameWorld Data Tank
    TiXmlElement*       dataXML;                      //!< The XML-Element this World has been loaded with.

    bool                showPNodes;                   //!< if the PNodes should be visible.
    bool                showBV;                       //!< if the Bounding Volumes should be visible.

    /* world timing */
    Uint32              lastFrame;                    //!< last time of frame (in MiliSeconds)
    Uint32              cycle;                        //!< The cycle we are in (starts with 0 and rises with every frame)
    float               dtS;                          //!< The time needed for caluculations in seconds
    float               speed;                        //!< how fast the game flows
    double              gameTime;                     //!< this is where the game time is saved
    Uint32              frameTimes[TICK_SMOOTH_VALUE];//!< The time used for the last TICK_SMOOTH_VALUE's frames.


    /* external modules interfaces */
    Shell*              shell;
};

#endif /* _GAME_WORLD_H */