minetest/src/guiEngine.h

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/*
Minetest
Copyright (C) 2013 sapier
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef GUI_ENGINE_H_
#define GUI_ENGINE_H_
/******************************************************************************/
/* Includes */
/******************************************************************************/
#include "irrlichttypes.h"
#include "modalMenu.h"
#include "guiFormSpecMenu.h"
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#include "sound.h"
#include "client/tile.h"
#include "util/enriched_string.h"
/******************************************************************************/
/* Typedefs and macros */
/******************************************************************************/
/** texture layer ids */
typedef enum {
TEX_LAYER_BACKGROUND = 0,
TEX_LAYER_OVERLAY,
TEX_LAYER_HEADER,
TEX_LAYER_FOOTER,
TEX_LAYER_MAX
} texture_layer;
typedef struct {
video::ITexture *texture = nullptr;
bool tile;
unsigned int minsize;
} image_definition;
/******************************************************************************/
/* forward declarations */
/******************************************************************************/
class GUIEngine;
class MainMenuScripting;
class Clouds;
struct MainMenuData;
/******************************************************************************/
/* declarations */
/******************************************************************************/
/** GUIEngine specific implementation of TextDest used within guiFormSpecMenu */
class TextDestGuiEngine : public TextDest
{
public:
/**
* default constructor
* @param engine the engine data is transmitted for further processing
*/
TextDestGuiEngine(GUIEngine* engine) : m_engine(engine) {};
/**
* receive fields transmitted by guiFormSpecMenu
* @param fields map containing formspec field elements currently active
*/
void gotText(const StringMap &fields);
/**
* receive text/events transmitted by guiFormSpecMenu
* @param text textual representation of event
*/
void gotText(const std::wstring &text);
private:
/** target to transmit data to */
GUIEngine *m_engine = nullptr;
};
/** GUIEngine specific implementation of ISimpleTextureSource */
class MenuTextureSource : public ISimpleTextureSource
{
public:
/**
* default constructor
* @param driver the video driver to load textures from
*/
MenuTextureSource(video::IVideoDriver *driver) : m_driver(driver) {};
/**
* destructor, removes all loaded textures
*/
virtual ~MenuTextureSource();
/**
* get a texture, loading it if required
* @param name path to the texture
* @param id receives the texture ID, always 0 in this implementation
*/
video::ITexture *getTexture(const std::string &name, u32 *id = NULL);
private:
/** driver to get textures from */
video::IVideoDriver *m_driver = nullptr;
/** set of texture names to delete */
std::set<std::string> m_to_delete;
};
/** GUIEngine specific implementation of OnDemandSoundFetcher */
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class MenuMusicFetcher: public OnDemandSoundFetcher
{
public:
/**
* get sound file paths according to sound name
* @param name sound name
* @param dst_paths receives possible paths to sound files
* @param dst_datas receives binary sound data (not used here)
*/
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void fetchSounds(const std::string &name,
std::set<std::string> &dst_paths,
std::set<std::string> &dst_datas);
private:
/** set of fetched sound names */
std::set<std::string> m_fetched;
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};
/** implementation of main menu based uppon formspecs */
class GUIEngine {
/** grant ModApiMainMenu access to private members */
friend class ModApiMainMenu;
friend class ModApiSound;
public:
/**
* default constructor
* @param dev device to draw at
* @param parent parent gui element
* @param menumgr manager to add menus to
* @param smgr scene manager to add scene elements to
* @param data struct to transfer data to main game handling
*/
GUIEngine(irr::IrrlichtDevice *dev,
JoystickController *joystick,
gui::IGUIElement *parent,
IMenuManager *menumgr,
scene::ISceneManager *smgr,
MainMenuData *data,
bool &kill);
/** default destructor */
virtual ~GUIEngine();
/**
* return MainMenuScripting interface
*/
MainMenuScripting *getScriptIface()
{
return m_script;
}
/**
* return dir of current menuscript
*/
std::string getScriptDir()
{
return m_scriptdir;
}
/** pass async callback to scriptengine **/
unsigned int queueAsync(const std::string &serialized_fct,
const std::string &serialized_params);
private:
/** find and run the main menu script */
bool loadMainMenuScript();
/** run main menu loop */
void run();
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/** update size of topleftext element */
void updateTopLeftTextSize();
/** device to draw at */
irr::IrrlichtDevice *m_device = nullptr;
/** parent gui element */
gui::IGUIElement *m_parent = nullptr;
/** manager to add menus to */
IMenuManager *m_menumanager = nullptr;
/** scene manager to add scene elements to */
scene::ISceneManager *m_smgr = nullptr;
/** pointer to data beeing transfered back to main game handling */
MainMenuData *m_data = nullptr;
/** pointer to texture source */
ISimpleTextureSource *m_texture_source = nullptr;
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/** pointer to soundmanager*/
ISoundManager *m_sound_manager = nullptr;
/** representation of form source to be used in mainmenu formspec */
FormspecFormSource *m_formspecgui = nullptr;
/** formspec input receiver */
TextDestGuiEngine *m_buttonhandler = nullptr;
/** the formspec menu */
GUIFormSpecMenu *m_menu = nullptr;
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/** reference to kill variable managed by SIGINT handler */
bool &m_kill;
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/** variable used to abort menu and return back to main game handling */
bool m_startgame = false;
/** scripting interface */
MainMenuScripting *m_script = nullptr;
/** script basefolder */
std::string m_scriptdir = "";
/**
* draw background layer
* @param driver to use for drawing
*/
void drawBackground(video::IVideoDriver *driver);
/**
* draw overlay layer
* @param driver to use for drawing
*/
void drawOverlay(video::IVideoDriver *driver);
/**
* draw header layer
* @param driver to use for drawing
*/
void drawHeader(video::IVideoDriver *driver);
/**
* draw footer layer
* @param driver to use for drawing
*/
void drawFooter(video::IVideoDriver *driver);
/**
* load a texture for a specified layer
* @param layer draw layer to specify texture
* @param texturepath full path of texture to load
*/
bool setTexture(texture_layer layer, std::string texturepath,
bool tile_image, unsigned int minsize);
/**
* download a file using curl
* @param url url to download
* @param target file to store to
*/
static bool downloadFile(const std::string &url, const std::string &target);
/** array containing pointers to current specified texture layers */
image_definition m_textures[TEX_LAYER_MAX];
/**
* specify text to appear as top left string
* @param text to set
*/
void setTopleftText(const std::string &text);
/** pointer to gui element shown at topleft corner */
irr::gui::IGUIStaticText *m_irr_toplefttext = nullptr;
/** and text that is in it */
EnrichedString m_toplefttext;
/** initialize cloud subsystem */
void cloudInit();
/** do preprocessing for cloud subsystem */
void cloudPreProcess();
/** do postprocessing for cloud subsystem */
void cloudPostProcess();
/** internam data required for drawing clouds */
struct clouddata {
/** delta time since last cloud processing */
f32 dtime;
/** absolute time of last cloud processing */
u32 lasttime;
/** pointer to cloud class */
Clouds *clouds = nullptr;
/** camera required for drawing clouds */
scene::ICameraSceneNode *camera = nullptr;
};
/** is drawing of clouds enabled atm */
bool m_clouds_enabled = true;
/** data used to draw clouds */
clouddata m_cloud;
/** start playing a sound and return handle */
s32 playSound(SimpleSoundSpec spec, bool looped);
/** stop playing a sound started with playSound() */
void stopSound(s32 handle);
};
#endif /* GUI_ENGINE_H_ */