app.h

吃豆子游戏源码

/**
 *	File	:	App.h
 *  Author	:	Kevin Lynx
 *	Date	:	2007/8/1
 */
#ifndef _APP_H_
#define _APP_H_

#define WIN32_LEAN_AND_MEAN

#include "Singleton.h"
#include "InfoTextFX.h"
#include <windows.h>

class FadeImage;

/**
 * App
 *
 * the top level manager in this game
 */
class App : public Singleton<App>, public IEventReceiver
{
public:
	/**
	 * GameState
	 *
	 */
	enum E_GameState
	{
		GAME_STATE_SHOW_LOGO,

		GAME_STATE_GUI_MIN, 
		GAME_STATE_MAIN_MENU,
		GAME_STATE_SHOW_HELP,
		GAME_STATE_SHOW_CREDITS,
		GAME_STATE_GUI_MAX,

		GAME_STATE_PLAY_MIN,
		GAME_STATE_NORMAL_PLAY,
		GAME_STATE_GAMEOVER,
		GAME_STATE_CLEAR,	
		GAME_STATE_TIMEOUT,
		GAME_STATE_PLAY_MAX,
		
		GAME_STATE_EXIT
	};

public:
	/** 
	 * Constructor
	 *
	 */
	App();

	/**
	 * Destructor
	 *
	 */
	~App();

	/**
	 * init
	 *
	 */
	bool	init();

	/**
	 * run
	 *
	 */
	void	run();

	/**
	 * release
	 *
	 */
	void	release();

	/**
	 * getRealTime
	 *
	 * return the current system time in millseconds
	 */
	u32		getRealTime();

	/**
	 * getDeltaTime
	 *
	 * delta time is the time one frame used
	 */
	f32		getTimeFactor();

	/**
	 * updateCamera
	 *
	 */
	void	updateCamera( const vector3df &pos, const vector3df &lookat );

	/** 
	 * createLights
	 *
	 */
	void	createLights();

	/** 
	 * renderText
	 *
	 * render a text on the screen
	 */
	void	renderText( int x, int y, const stringw &str );

	/**
	 * renderImage
	 *
     * render an image for more convenience
	 * @param x the start x position on screen
	 * @param y the start y position on screen
	 * @param xscale x scale factor
	 * @param yscal y scale factor, if 0, then = xscal
	 */
	void	renderImage( ITexture *texture, s32 x, s32 y, f32 xscale, f32 yscale = 0.0f );

	/**
	 * renderStatus
	 *
	 * render game status
	 */
	void	renderStatus();

	/**
	 * setLevelTime
	 *
	 */
	void	setLevelTime( u32 time );
	void	addLevelTime( u32 time );
	/**
	 * getGameState
	 *
	 */
	int		getGameState();

	/**
	 * setGameState
	 *
	 * it switches different game states, and will change something
	 */
	void	setGameState( int state );

	bool	isTimeOut();

	void	setIcon( HINSTANCE hInstance );

	/// inherited from IEventReceiver
	bool	OnEvent( SEvent event );

private:

	/// game state functions
	void	_gameShowLogo();
	void	_gameMainMenu();
	void	_gameShowHelp();
	void	_gameShowCredits();
	void	_gamePlay();

	void	startGame();
	void	renderCursor();
private:
	IrrlichtDevice *mDevice;

	ICameraSceneNode *mCamera;

	/// time stuff
	u32		mFrameStartTime;
	u32		mDeltaTime;

	/// level time, in millseconds, when the time is <= 0, the time is out
	/// and the player lost one life
	u32	mLevelTime;

	InfoTextFX	mFXGameOver;
	InfoTextFX	mFXLevelClear;
	InfoTextFX	mFXTimeOut;

	FadeImage *mLogo;

	/// game state
	int		mGameState;
};

/// inline functions
inline f32 App::getTimeFactor()
{
	return mDeltaTime * 0.001f;
}

inline void App::setLevelTime( u32 time )
{
	mLevelTime = time;
}

inline bool App::isTimeOut()
{
	return mLevelTime < 1000;
}

inline void App::addLevelTime( u32 time )
{
	mLevelTime += time;
}

#endif //end _APP_H_