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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 "clouds.h"
#include "guiLuaApi.h"
#include "guiFormSpecMenu.h"
/******************************************************************************/
/* Typedefs and macros */
/******************************************************************************/
#define MAX_MENUBAR_BTN_COUNT 10
#define MAX_MENUBAR_BTN_ID 256
#define MIN_MENUBAR_BTN_ID (MAX_MENUBAR_BTN_ID - MAX_MENUBAR_BTN_COUNT)
/** texture layer ids */
typedef enum {
TEX_LAYER_BACKGROUND = 0,
TEX_LAYER_OVERLAY,
TEX_LAYER_HEADER,
TEX_LAYER_FOOTER,
TEX_LAYER_MAX
} texture_layer;
/******************************************************************************/
/* forward declarations */
/******************************************************************************/
class GUIEngine;
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);
/**
* receive fields transmitted by guiFormSpecMenu
* @param fields map containing formspec field elements currently active
*/
void gotText(std::map<std::string, std::string> fields);
/**
* receive text/events transmitted by guiFormSpecMenu
* @param text textual representation of event
*/
void gotText(std::wstring text);
private:
/** target to transmit data to */
GUIEngine* m_engine;
};
/** implementation of main menu based uppon formspecs */
class GUIEngine {
public:
/** TextDestGuiEngine needs to transfer data to engine */
friend class TextDestGuiEngine;
/** guiLuaApi is used to initialize contained stack */
friend class guiLuaApi;
/**
* 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,
gui::IGUIElement* parent,
IMenuManager *menumgr,
scene::ISceneManager* smgr,
MainMenuData* data);
/** default destructor */
virtual ~GUIEngine();
protected:
/**
* process field data recieved from formspec
* @param fields data in field format
*/
void handleButtons(std::map<std::string, std::string> fields);
/**
* process events received from formspec
* @param text events in textual form
*/
void handleEvent(std::string text);
/**
* return dir of current menuscript
*/
std::string getScriptDir() {
return m_scriptdir;
}
private:
/* run main menu loop */
void run();
/** handler to limit frame rate within main menu */
void limitFrameRate();
/** device to draw at */
irr::IrrlichtDevice* m_device;
/** parent gui element */
gui::IGUIElement* m_parent;
/** manager to add menus to */
IMenuManager* m_menumanager;
/** scene manager to add scene elements to */
scene::ISceneManager* m_smgr;
/** pointer to data beeing transfered back to main game handling */
MainMenuData* m_data;
/** representation of form source to be used in mainmenu formspec */
FormspecFormSource* m_formspecgui;
/** formspec input receiver */
TextDestGuiEngine* m_buttonhandler;
/** the formspec menu */
GUIFormSpecMenu* m_menu;
/** variable used to abort menu and return back to main game handling */
bool m_startgame;
/**
* initialize lua stack
* @param L stack to initialize
*/
void initalize_api(lua_State * L);
/**
* run a lua script
* @param script full path to script to run
*/
bool runScript(std::string script);
/**
* script error handler to process errors within lua
*/
void scriptError(const char *fmt, ...);
/** lua stack */
lua_State* m_engineluastack;
/** lua internal stack number of error handler*/
int m_luaerrorhandler;
/** 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);
/**
* download a file using curl
* @param url url to download
* @param target file to store to
*/
bool downloadFile(std::string url,std::string target);
/** array containing pointers to current specified texture layers */
video::ITexture* m_textures[TEX_LAYER_MAX];
/** draw version string in topleft corner */
void drawVersion();
/**
* specify text to be appended to version string
* @param text to set
*/
void setTopleftText(std::string append);
/** pointer to gui element shown at topleft corner */
irr::gui::IGUIStaticText* m_irr_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;
/** camera required for drawing clouds */
scene::ICameraSceneNode* camera;
};
/** is drawing of clouds enabled atm */
bool m_clouds_enabled;
/** data used to draw clouds */
clouddata m_cloud;
};
#endif /* GUI_ENGINE_H_ */
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