minetest/src/guiEngine.cpp

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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.
*/
#include "guiEngine.h"
#include "scripting_mainmenu.h"
#include "config.h"
#include "version.h"
#include "porting.h"
#include "filesys.h"
#include "main.h"
#include "settings.h"
#include "guiMainMenu.h"
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#include "sound.h"
#include "sound_openal.h"
#include "clouds.h"
#include <IGUIStaticText.h>
#include <ICameraSceneNode.h>
#if USE_CURL
#include <curl/curl.h>
#endif
/******************************************************************************/
/** TextDestGuiEngine */
/******************************************************************************/
TextDestGuiEngine::TextDestGuiEngine(GUIEngine* engine)
{
m_engine = engine;
}
/******************************************************************************/
void TextDestGuiEngine::gotText(std::map<std::string, std::string> fields)
{
m_engine->getScriptIface()->handleMainMenuButtons(fields);
}
/******************************************************************************/
void TextDestGuiEngine::gotText(std::wstring text)
{
m_engine->getScriptIface()->handleMainMenuEvent(wide_to_narrow(text));
}
/******************************************************************************/
/** MenuTextureSource */
/******************************************************************************/
MenuTextureSource::MenuTextureSource(video::IVideoDriver *driver)
{
m_driver = driver;
}
/******************************************************************************/
MenuTextureSource::~MenuTextureSource()
{
for (std::set<std::string>::iterator it = m_to_delete.begin();
it != m_to_delete.end(); ++it) {
const char *tname = (*it).c_str();
video::ITexture *texture = m_driver->getTexture(tname);
m_driver->removeTexture(texture);
}
}
/******************************************************************************/
video::ITexture* MenuTextureSource::getTexture(const std::string &name, u32 *id)
{
if(id)
*id = 0;
if(name.empty())
return NULL;
m_to_delete.insert(name);
return m_driver->getTexture(name.c_str());
}
/******************************************************************************/
/** MenuMusicFetcher */
/******************************************************************************/
void MenuMusicFetcher::fetchSounds(const std::string &name,
std::set<std::string> &dst_paths,
std::set<std::string> &dst_datas)
{
if(m_fetched.count(name))
return;
m_fetched.insert(name);
std::string base;
base = porting::path_share + DIR_DELIM + "sounds";
dst_paths.insert(base + DIR_DELIM + name + ".ogg");
int i;
for(i=0; i<10; i++)
dst_paths.insert(base + DIR_DELIM + name + "."+itos(i)+".ogg");
base = porting::path_user + DIR_DELIM + "sounds";
dst_paths.insert(base + DIR_DELIM + name + ".ogg");
for(i=0; i<10; i++)
dst_paths.insert(base + DIR_DELIM + name + "."+itos(i)+".ogg");
}
/******************************************************************************/
/** GUIEngine */
/******************************************************************************/
GUIEngine::GUIEngine( irr::IrrlichtDevice* dev,
gui::IGUIElement* parent,
IMenuManager *menumgr,
scene::ISceneManager* smgr,
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MainMenuData* data,
bool& kill) :
m_device(dev),
m_parent(parent),
m_menumanager(menumgr),
m_smgr(smgr),
m_data(data),
m_texture_source(NULL),
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m_sound_manager(NULL),
m_formspecgui(0),
m_buttonhandler(0),
m_menu(0),
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m_kill(kill),
m_startgame(false),
m_script(0),
m_scriptdir(""),
m_irr_toplefttext(0),
m_clouds_enabled(true),
m_cloud()
{
//initialize texture pointers
for (unsigned int i = 0; i < TEX_LAYER_MAX; i++) {
m_textures[i] = 0;
}
// is deleted by guiformspec!
m_buttonhandler = new TextDestGuiEngine(this);
//create texture source
m_texture_source = new MenuTextureSource(m_device->getVideoDriver());
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//create soundmanager
MenuMusicFetcher soundfetcher;
#if USE_SOUND
m_sound_manager = createOpenALSoundManager(&soundfetcher);
#endif
if(!m_sound_manager)
m_sound_manager = &dummySoundManager;
//create topleft header
core::rect<s32> rect(0, 0, 500, 40);
rect += v2s32(4, 0);
std::string t = std::string("Minetest ") + minetest_version_hash;
m_irr_toplefttext =
m_device->getGUIEnvironment()->addStaticText(narrow_to_wide(t).c_str(),
rect,false,true,0,-1);
//create formspecsource
m_formspecgui = new FormspecFormSource("",&m_formspecgui);
/* Create menu */
m_menu =
new GUIFormSpecMenu( m_device,
m_parent,
-1,
m_menumanager,
0 /* &client */,
0 /* gamedef */,
m_texture_source);
m_menu->allowClose(false);
m_menu->lockSize(true,v2u32(800,600));
m_menu->setFormSource(m_formspecgui);
m_menu->setTextDest(m_buttonhandler);
// Initialize scripting
infostream<<"GUIEngine: Initializing Lua"<<std::endl;
m_script = new MainMenuScripting(this);
try {
if (m_data->errormessage != "")
{
m_script->setMainMenuErrorMessage(m_data->errormessage);
m_data->errormessage = "";
}
if (!loadMainMenuScript())
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assert("no future without mainmenu" == 0);
run();
}
catch(LuaError &e) {
errorstream << "MAINMENU ERROR: " << e.what() << std::endl;
m_data->errormessage = e.what();
}
m_menu->quitMenu();
m_menu->drop();
m_menu = 0;
}
/******************************************************************************/
bool GUIEngine::loadMainMenuScript()
{
// Try custom menu script (main_menu_script)
std::string menuscript = g_settings->get("main_menu_script");
if(menuscript != "") {
m_scriptdir = fs::RemoveLastPathComponent(menuscript);
if(m_script->loadMod(menuscript, "__custommenu")) {
// custom menu script loaded
return true;
}
else {
infostream
<< "GUIEngine: execution of custom menu failed!"
<< std::endl
<< "\tfalling back to builtin menu"
<< std::endl;
}
}
// Try builtin menu script (main_menu_script)
std::string builtin_menuscript =
porting::path_share + DIR_DELIM + "builtin"
+ DIR_DELIM + "mainmenu.lua";
m_scriptdir = fs::RemoveRelativePathComponents(
fs::RemoveLastPathComponent(builtin_menuscript));
if(m_script->loadMod(builtin_menuscript, "__builtinmenu")) {
// builtin menu script loaded
return true;
}
else {
errorstream
<< "GUIEngine: unable to load builtin menu"
<< std::endl;
}
return false;
}
/******************************************************************************/
void GUIEngine::run()
{
// Always create clouds because they may or may not be
// needed based on the game selected
video::IVideoDriver* driver = m_device->getVideoDriver();
cloudInit();
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while(m_device->run() && (!m_startgame) && (!m_kill)) {
driver->beginScene(true, true, video::SColor(255,140,186,250));
if (m_clouds_enabled)
{
cloudPreProcess();
drawOverlay(driver);
}
else
drawBackground(driver);
drawHeader(driver);
drawFooter(driver);
m_device->getGUIEnvironment()->drawAll();
driver->endScene();
if (m_clouds_enabled)
cloudPostProcess();
else
sleep_ms(25);
}
}
/******************************************************************************/
GUIEngine::~GUIEngine()
{
video::IVideoDriver* driver = m_device->getVideoDriver();
assert(driver != 0);
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if(m_sound_manager != &dummySoundManager){
delete m_sound_manager;
m_sound_manager = NULL;
}
//TODO: clean up m_menu here
infostream<<"GUIEngine: Deinitializing scripting"<<std::endl;
delete m_script;
m_irr_toplefttext->setText(L"");
//clean up texture pointers
for (unsigned int i = 0; i < TEX_LAYER_MAX; i++) {
if (m_textures[i] != 0)
driver->removeTexture(m_textures[i]);
}
delete m_texture_source;
if (m_cloud.clouds)
m_cloud.clouds->drop();
}
/******************************************************************************/
void GUIEngine::cloudInit()
{
m_cloud.clouds = new Clouds(m_smgr->getRootSceneNode(),
m_smgr, -1, rand(), 100);
m_cloud.clouds->update(v2f(0, 0), video::SColor(255,200,200,255));
m_cloud.camera = m_smgr->addCameraSceneNode(0,
v3f(0,0,0), v3f(0, 60, 100));
m_cloud.camera->setFarValue(10000);
m_cloud.lasttime = m_device->getTimer()->getTime();
}
/******************************************************************************/
void GUIEngine::cloudPreProcess()
{
u32 time = m_device->getTimer()->getTime();
if(time > m_cloud.lasttime)
m_cloud.dtime = (time - m_cloud.lasttime) / 1000.0;
else
m_cloud.dtime = 0;
m_cloud.lasttime = time;
m_cloud.clouds->step(m_cloud.dtime*3);
m_cloud.clouds->render();
m_smgr->drawAll();
}
/******************************************************************************/
void GUIEngine::cloudPostProcess()
{
float fps_max = g_settings->getFloat("fps_max");
// Time of frame without fps limit
float busytime;
u32 busytime_u32;
// not using getRealTime is necessary for wine
u32 time = m_device->getTimer()->getTime();
if(time > m_cloud.lasttime)
busytime_u32 = time - m_cloud.lasttime;
else
busytime_u32 = 0;
busytime = busytime_u32 / 1000.0;
// FPS limiter
u32 frametime_min = 1000./fps_max;
if(busytime_u32 < frametime_min) {
u32 sleeptime = frametime_min - busytime_u32;
m_device->sleep(sleeptime);
}
}
/******************************************************************************/
void GUIEngine::drawBackground(video::IVideoDriver* driver)
{
v2u32 screensize = driver->getScreenSize();
video::ITexture* texture = m_textures[TEX_LAYER_BACKGROUND];
/* If no texture, draw background of solid color */
if(!texture){
video::SColor color(255,80,58,37);
core::rect<s32> rect(0, 0, screensize.X, screensize.Y);
driver->draw2DRectangle(color, rect, NULL);
return;
}
/* Draw background texture */
v2u32 sourcesize = texture->getOriginalSize();
driver->draw2DImage(texture,
core::rect<s32>(0, 0, screensize.X, screensize.Y),
core::rect<s32>(0, 0, sourcesize.X, sourcesize.Y),
NULL, NULL, true);
}
/******************************************************************************/
void GUIEngine::drawOverlay(video::IVideoDriver* driver)
{
v2u32 screensize = driver->getScreenSize();
video::ITexture* texture = m_textures[TEX_LAYER_OVERLAY];
/* If no texture, draw background of solid color */
if(!texture)
return;
/* Draw background texture */
v2u32 sourcesize = texture->getOriginalSize();
driver->draw2DImage(texture,
core::rect<s32>(0, 0, screensize.X, screensize.Y),
core::rect<s32>(0, 0, sourcesize.X, sourcesize.Y),
NULL, NULL, true);
}
/******************************************************************************/
void GUIEngine::drawHeader(video::IVideoDriver* driver)
{
core::dimension2d<u32> screensize = driver->getScreenSize();
video::ITexture* texture = m_textures[TEX_LAYER_HEADER];
/* If no texture, draw nothing */
if(!texture)
return;
f32 mult = (((f32)screensize.Width / 2.0)) /
((f32)texture->getOriginalSize().Width);
v2s32 splashsize(((f32)texture->getOriginalSize().Width) * mult,
((f32)texture->getOriginalSize().Height) * mult);
// Don't draw the header is there isn't enough room
s32 free_space = (((s32)screensize.Height)-320)/2;
if (free_space > splashsize.Y) {
core::rect<s32> splashrect(0, 0, splashsize.X, splashsize.Y);
splashrect += v2s32((screensize.Width/2)-(splashsize.X/2),
((free_space/2)-splashsize.Y/2)+10);
video::SColor bgcolor(255,50,50,50);
driver->draw2DImage(texture, splashrect,
core::rect<s32>(core::position2d<s32>(0,0),
core::dimension2di(texture->getOriginalSize())),
NULL, NULL, true);
}
}
/******************************************************************************/
void GUIEngine::drawFooter(video::IVideoDriver* driver)
{
core::dimension2d<u32> screensize = driver->getScreenSize();
video::ITexture* texture = m_textures[TEX_LAYER_FOOTER];
/* If no texture, draw nothing */
if(!texture)
return;
f32 mult = (((f32)screensize.Width)) /
((f32)texture->getOriginalSize().Width);
v2s32 footersize(((f32)texture->getOriginalSize().Width) * mult,
((f32)texture->getOriginalSize().Height) * mult);
// Don't draw the footer if there isn't enough room
s32 free_space = (((s32)screensize.Height)-320)/2;
if (free_space > footersize.Y) {
core::rect<s32> rect(0,0,footersize.X,footersize.Y);
rect += v2s32(screensize.Width/2,screensize.Height-footersize.Y);
rect -= v2s32(footersize.X/2, 0);
driver->draw2DImage(texture, rect,
core::rect<s32>(core::position2d<s32>(0,0),
core::dimension2di(texture->getOriginalSize())),
NULL, NULL, true);
}
}
/******************************************************************************/
bool GUIEngine::setTexture(texture_layer layer,std::string texturepath) {
video::IVideoDriver* driver = m_device->getVideoDriver();
assert(driver != 0);
if (m_textures[layer] != 0)
{
driver->removeTexture(m_textures[layer]);
m_textures[layer] = 0;
}
if ((texturepath == "") || !fs::PathExists(texturepath))
return false;
m_textures[layer] = driver->getTexture(texturepath.c_str());
if (m_textures[layer] == 0) return false;
return true;
}
/******************************************************************************/
#if USE_CURL
static size_t WriteCallback(void *contents, size_t size, size_t nmemb, void *userp)
{
FILE* targetfile = (FILE*) userp;
fwrite(contents,size,nmemb,targetfile);
return size * nmemb;
}
#endif
bool GUIEngine::downloadFile(std::string url,std::string target) {
#if USE_CURL
//download file via curl
CURL *curl;
curl = curl_easy_init();
if (curl)
{
CURLcode res;
bool retval = true;
FILE* targetfile = fopen(target.c_str(),"wb");
if (targetfile) {
curl_easy_setopt(curl, CURLOPT_NOSIGNAL, 1);
curl_easy_setopt(curl, CURLOPT_URL, url.c_str());
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteCallback);
curl_easy_setopt(curl, CURLOPT_WRITEDATA, targetfile);
res = curl_easy_perform(curl);
if (res != CURLE_OK) {
errorstream << "File at url \"" << url
<<"\" not found (" << curl_easy_strerror(res) << ")" <<std::endl;
retval = false;
}
fclose(targetfile);
}
else {
retval = false;
}
curl_easy_cleanup(curl);
return retval;
}
#endif
return false;
}
/******************************************************************************/
void GUIEngine::setTopleftText(std::string append) {
std::string toset = std::string("Minetest ") + minetest_version_hash;
if (append != "") {
toset += " / ";
toset += append;
}
m_irr_toplefttext->setText(narrow_to_wide(toset).c_str());
}
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/******************************************************************************/
s32 GUIEngine::playSound(SimpleSoundSpec spec, bool looped)
{
s32 handle = m_sound_manager->playSound(spec, looped);
return handle;
}
/******************************************************************************/
void GUIEngine::stopSound(s32 handle)
{
m_sound_manager->stopSound(handle);
}