new logger

scripts are now more error prone

CMakeLists.txt

@@ -6,7 +6,7 @@ SET(CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake;${CMAKE_MODULE_PATH}")
 # find needed packages
 SET(Boost_USE_STATIC_LIBS ON)
 SET(Boost_USE_MULTITHREADED ON)
-FIND_PACKAGE(Boost COMPONENTS system regex signals REQUIRED)
+FIND_PACKAGE(Boost COMPONENTS system signals REQUIRED)
 FIND_PACKAGE(OpenGL REQUIRED)
 FIND_PACKAGE(Lua51 REQUIRED)
 FIND_PACKAGE(YamlCpp REQUIRED)

data/modules/mainmenu/mainmenu.lua

@@ -9,7 +9,7 @@ end
 
 function MainMenu_enterGameClicked()
     enterGameWindow = loadUI("modules/mainmenu/entergamewindow.yml")
-    enterGameWindow:getParent():lock(enterGameWindow)
+    button = enterGameWindow:getChildByID("okButton")
 end
 
 function MainMenu_optionsClicked()

src/framework/core/configs.cpp

@@ -54,7 +54,7 @@ bool Configs::load(const std::string& fileName)
             m_confsMap[key] = value;
         }
     } catch (YAML::Exception& e) {
-        logError("Malformed config file: %s", e.what());
+        flogError("ERROR: Malformed config file: %s", e.what());
         return false;
     }
 
@@ -102,7 +102,7 @@ const std::string &Configs::getString(const std::string &key) const
 {
     auto it = m_confsMap.find(key);
     if(it == m_confsMap.end()) {
-        logWarning("Config value %s not found", key.c_str());
+        flogWarning("WARNING: Config value %s not found", key.c_str());
         static std::string emptystr;
         return emptystr;
     }
@@ -113,7 +113,7 @@ float Configs::getFloat(const std::string &key) const
 {
     auto it = m_confsMap.find(key);
     if(it == m_confsMap.end()) {
-        logWarning("Config value %s not found", key.c_str());
+        flogWarning("WARNING: Config value %s not found", key.c_str());
         return 0;
     }
     return convertType<float, std::string>(it->second);
@@ -123,7 +123,7 @@ bool Configs::getBoolean(const std::string &key) const
 {
     auto it = m_confsMap.find(key);
     if(it == m_confsMap.end()) {
-        logWarning("Config value %s not found", key.c_str());
+        flogWarning("WARNING: Config value %s not found", key.c_str());
         return 0;
     }
     return (it->second == "true");
@@ -133,7 +133,7 @@ int Configs::getInteger(const std::string &key) const
 {
     auto it = m_confsMap.find(key);
     if(it == m_confsMap.end()) {
-        logWarning("Config value %s not found", key.c_str());
+        flogWarning("WARNING: Config value %s not found", key.c_str());
         return 0;
     }
     return convertType<int, std::string>(it->second);

src/framework/core/dispatcher.cpp

@@ -41,12 +41,12 @@ void Dispatcher::poll()
     }
 }
 
-void Dispatcher::scheduleTask(const Callback& callback, int delay)
+void Dispatcher::scheduleTask(const SimpleCallback& callback, int delay)
 {
     m_taskList.push(new Task(g_engine.getCurrentFrameTicks() + delay, callback));
 }
 
-void Dispatcher::addTask(const Callback& callback)
+void Dispatcher::addTask(const SimpleCallback& callback)
 {
     m_taskList.push(new Task(callback));
 }

src/framework/core/dispatcher.h

@@ -29,11 +29,11 @@
 
 class Task {
 public:
-    inline Task(const Callback& _callback) : ticks(0), callback(_callback) { }
+    inline Task(const SimpleCallback& _callback) : ticks(0), callback(_callback) { }
-    inline Task(int _ticks, const Callback& _callback) : ticks(_ticks), callback(_callback)  { }
+    inline Task(int _ticks, const SimpleCallback& _callback) : ticks(_ticks), callback(_callback)  { }
     inline bool operator<(const Task& other) const { return ticks > other.ticks; }
     int ticks;
-    Callback callback;
+    SimpleCallback callback;
 };
 
 class lessTask : public std::binary_function<Task*&, Task*&, bool> {
@@ -50,10 +50,10 @@ public:
     void poll();
 
     /// Add an event
-    void addTask(const Callback& callback);
+    void addTask(const SimpleCallback& callback);
 
     /// Schedula an event
-    void scheduleTask(const Callback& callback, int delay);
+    void scheduleTask(const SimpleCallback& callback, int delay);
 
 private:
     std::priority_queue<Task*, std::vector<Task*>, lessTask> m_taskList;

src/framework/core/engine.cpp

@@ -87,7 +87,7 @@ void Engine::run()
                     frameCount = 0;
 
                     // update fps text
-                    fpsText = format("FPS: %d", fps);
+                    fpsText = f("FPS: %d", fps);
                     fpsTextSize = defaultFont->calculateTextRectSize(fpsText);
                 }
             }

src/framework/core/engine.h

@@ -63,7 +63,7 @@ public:
     /// Return the current ticks on this frame
     int getCurrentFrameTicks() const { return m_lastFrameTicks; }
 
-    void setOnClose(Callback onCloseCallback) { m_onCloseCallback = onCloseCallback; }
+    void setOnClose(SimpleCallback onCloseCallback) { m_onCloseCallback = onCloseCallback; }
 
 private:
     bool m_stopping;
@@ -72,7 +72,7 @@ private:
 
     int m_lastFrameTicks;
 
-    Callback m_onCloseCallback;
+    SimpleCallback m_onCloseCallback;
 };
 
 extern Engine g_engine;

src/framework/core/resources.cpp

@@ -44,14 +44,14 @@ bool Resources::setWriteDir(const std::string& path)
     bool ret = (bool)PHYSFS_setWriteDir(path.c_str());
 
     if(!ret)
-        logError("Could not set the path \"%s\" as write directory, file write will not work correctly.", path.c_str());
+        flogError("ERROR: Could not set the path \"%s\" as write directory, file write will not work correctly.", path.c_str());
     return ret;
 }
 
 bool Resources::addToSearchPath(const std::string& path, bool insertInFront /*= true*/)
 {
     if(!PHYSFS_addToSearchPath(path.c_str(), insertInFront ? 0 : 1)) {
-        logError("Error while adding \"%s\" to resources search path: %s", path.c_str(), PHYSFS_getLastError());
+        flogError("ERROR: Error while adding \"%s\" to resources search path: %s", path.c_str() % PHYSFS_getLastError());
         return false;
     }
     return true;
@@ -66,7 +66,7 @@ uchar *Resources::loadFile(const std::string& fileName, uint *fileSize)
 {
     PHYSFS_file *file = PHYSFS_openRead(fileName.c_str());
     if(!file) {
-        logError("Failed to load file \"%s\": %s", fileName.c_str(), PHYSFS_getLastError());
+        flogError("ERROR: Failed to load file \"%s\": %s", fileName.c_str() % PHYSFS_getLastError());
         *fileSize = 0;
         return NULL;
     }
@@ -95,7 +95,7 @@ bool Resources::saveFile(const std::string &fileName, const uchar *data, uint si
 {
     PHYSFS_file *file = PHYSFS_openWrite(fileName.c_str());
     if(!file) {
-        logError("Failed to save file \"%s\": %s", fileName.c_str(), PHYSFS_getLastError());
+        flogError("ERROR: Failed to save file \"%s\": %s", fileName.c_str() % PHYSFS_getLastError());
         return false;
     }
 

src/framework/graphics/font.cpp

@@ -68,7 +68,7 @@ bool Font::load(const std::string& file)
 {
     std::string fileContents = g_resources.loadTextFile(file);
     if(!fileContents.size()) {
-        logError("Coult not load font file \"%s",  file.c_str());
+        flogError("ERROR: Coult not load font file \"%s",  file.c_str());
         return false;
     }
 
@@ -96,7 +96,7 @@ bool Font::load(const std::string& file)
         // load texture
         m_texture = g_textures.get("fonts/" + textureName);
         if(!m_texture) {
-            logError("Failed to load image for font file \"%s\"", file.c_str());
+            flogError("ERROR: Failed to load image for font file \"%s\"", file.c_str());
             return false;
         }
 
@@ -123,7 +123,7 @@ bool Font::load(const std::string& file)
                                                  m_glyphHeight);
         }
     } catch (YAML::Exception& e) {
-        logError("Malformed font file \"%s\":\n  %s", file.c_str(), e.what());
+        flogError("ERROR: Malformed font file \"%s\":\n  %s", file.c_str() % e.what());
         return false;
     }
 

src/framework/graphics/fonts.cpp

@@ -47,7 +47,7 @@ void Fonts::init(const std::string& defaultFontName)
     }
 
     if(!m_defaultFont)
-        logFatal("Could not load the default font \"%s\"\n", defaultFontName.c_str());
+        flogFatal("FATAL ERROR: Could not load the default font \"%s\"\n", defaultFontName.c_str());
 }
 
 Font* Fonts::get(const std::string& fontName)
@@ -58,6 +58,6 @@ Font* Fonts::get(const std::string& fontName)
             return (*it).get();
     }
 
-    logError("Font \"%s\" not found, returing the default one", fontName.c_str());
+    flogError("ERROR: Font \"%s\" not found, returing the default one", fontName.c_str());
     return m_defaultFont.get();
 }

src/framework/graphics/graphics.cpp

@@ -43,8 +43,8 @@ void Graphics::init()
     glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
     glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
 
-    logInfo("GPU %s", (const char*)glGetString(GL_RENDERER));
+    flogInfo("GPU %s", (const char*)glGetString(GL_RENDERER));
-    logInfo("OpenGL %s", (const char*)glGetString(GL_VERSION));
+    flogInfo("OpenGL %s", (const char*)glGetString(GL_VERSION));
 }
 
 void Graphics::terminate()

src/framework/graphics/textures.cpp

@@ -46,18 +46,18 @@ TexturePtr Textures::get(const std::string& textureFile)
     if(!texture) {
         // currently only png textures are supported
         if(!boost::ends_with(textureFile, ".png"))
-            logFatal("Unable to load texture %s, file format no supported.", textureFile.c_str());
+            flogFatal("FATAL ERROR: Unable to load texture %s, file format no supported.", textureFile.c_str());
 
         // load texture file data
         uint fileSize;
         uchar *textureFileData = g_resources.loadFile(textureFile, &fileSize);
         if(!textureFileData)
-            logFatal("Unable to load texture %s, file could not be read.", textureFile.c_str());
+            flogFatal("FATAL ERROR: Unable to load texture %s, file could not be read.", textureFile.c_str());
 
         // load the texture
         texture = TexturePtr(TextureLoader::loadPNG(textureFileData));
         if(!texture)
-            logFatal("Unable to load texture %s", textureFile.c_str());
+            flogFatal("FATAL ERROR: Unable to load texture %s", textureFile.c_str());
         delete[] textureFileData;
     }
 

src/framework/net/connection.cpp

@@ -40,7 +40,7 @@ void Connection::poll()
     ioService.reset();
 }
 
-void Connection::connect(const std::string& host, uint16 port, const Callback& callback)
+void Connection::connect(const std::string& host, uint16 port, const SimpleCallback& callback)
 {
     m_connectCallback = callback;
     m_connectionState = CONNECTION_STATE_RESOLVING;

src/framework/net/connection.h

@@ -37,7 +37,7 @@ public:
 
     static void poll();
 
-    void connect(const std::string& host, uint16 port, const Callback& callback);
+    void connect(const std::string& host, uint16 port, const SimpleCallback& callback);
     void setErrorCallback(const ErrorCallback& errorCallback) { m_errorCallback = errorCallback; }
 
     void onTimeout(const boost::system::error_code& error);
@@ -53,7 +53,7 @@ public:
 
 private:
     ErrorCallback m_errorCallback;
-    Callback m_connectCallback;
+    SimpleCallback m_connectCallback;
     ConnectionState_t m_connectionState;
 
     boost::asio::deadline_timer m_timer;

src/framework/net/protocol.cpp

@@ -30,14 +30,14 @@ Protocol::Protocol() :
     m_connection->setErrorCallback(boost::bind(&Protocol::onError, this, _1));
 }
 
-void Protocol::connect(const std::string& host, uint16 port, const Callback& callback)
+void Protocol::connect(const std::string& host, uint16 port, const SimpleCallback& callback)
 {
     m_connection->connect(host, port, callback);
 }
 
 void Protocol::onError(const boost::system::error_code& error)
 {
-    logError(error.message().c_str());
+    flogError("PROTOCOL ERROR: ", error.message());
 
     // invalid hostname
     // connection timeouted

src/framework/net/protocol.h

@@ -32,7 +32,7 @@ class Protocol
 public:
     Protocol();
 
-    void connect(const std::string& host, uint16 port, const Callback& callback);
+    void connect(const std::string& host, uint16 port, const SimpleCallback& callback);
 
     virtual void onError(const boost::system::error_code& error);
 

src/framework/platform/win32platform.cpp

@@ -211,7 +211,7 @@ void Platform::init(const char *appName)
     wc.lpszClassName            = win32.appName.c_str();                        // Set The Class Name
 
     if(!RegisterClassA(&wc))
-        logFatal("Failed to register the window class.");
+        logFatal("FATAL ERROR: Failed to register the window class.");
 
     // force first tick
     Platform::getTicks();
@@ -226,7 +226,7 @@ void Platform::terminate()
 
     if(win32.instance) {
         if(!UnregisterClassA(win32.appName.c_str(), win32.instance))
-            logError("Unregister class failed.");
+            logError("ERROR: Unregister class failed.");
 
         win32.instance = NULL;
     }
@@ -286,7 +286,7 @@ bool Platform::createWindow(int x, int y, int width, int height, int minWidth, i
 
     if(!win32.window) {
         terminate();
-        logFatal("Window creation error.");
+        logFatal("FATAL ERROR: Window creation error.");
         return false;
     }
 
@@ -315,31 +315,31 @@ bool Platform::createWindow(int x, int y, int width, int height, int minWidth, i
 
     if(!(win32.hdc = GetDC(win32.window))) {
         terminate();
-        logFatal("Can't Create A GL Device Context.");
+        logFatal("FATAL ERROR: Can't Create A GL Device Context.");
         return false;
     }
 
     if(!(pixelFormat = ChoosePixelFormat(win32.hdc, &pfd))) {
         terminate();
-        logFatal("Can't Find A Suitable PixelFormat.");
+        logFatal("FATAL ERROR: Can't Find A Suitable PixelFormat.");
         return false;
     }
 
     if(!SetPixelFormat(win32.hdc, pixelFormat, &pfd)) {
         terminate();
-        logFatal("Can't Set The PixelFormat.");
+        logFatal("FATAL ERROR: Can't Set The PixelFormat.");
         return false;
     }
 
     if(!(win32.hrc = wglCreateContext(win32.hdc))) {
         terminate();
-        logFatal("Can't Create A GL Rendering Context.");
+        logFatal("FATAL ERROR: Can't Create A GL Rendering Context.");
         return false;
     }
 
     if(!wglMakeCurrent(win32.hdc, win32.hrc)) {
         terminate();
-        logFatal("Can't Activate The GL Rendering Context.");
+        logFatal("FATAL ERROR: Can't Activate The GL Rendering Context.");
         return false;
     }
 
@@ -350,24 +350,24 @@ void Platform::destroyWindow()
 {
     if(win32.hrc) {
         if(!wglMakeCurrent(NULL, NULL))
-            logError("Release Of DC And RC Failed.");
+            logError("ERROR: Release Of DC And RC Failed.");
 
         if(!wglDeleteContext(win32.hrc))
-            logError("Release Rendering Context Failed.");
+            logError("ERROR: Release Rendering Context Failed.");
 
         win32.hrc = NULL;
     }
 
     if(win32.hdc) {
         if(!ReleaseDC(win32.window, win32.hdc))
-            logError("Release Device Context Failed.");
+            logError("ERROR: Release Device Context Failed.");
 
         win32.hdc = NULL;
     }
 
     if(win32.window) {
         if(!DestroyWindow(win32.window))
-            logError("Destroy window failed.");
+            logError("ERROR: Destroy window failed.");
 
         win32.window = NULL;
     }
@@ -502,7 +502,7 @@ std::string Platform::getAppUserDir()
     std::stringstream sdir;
     sdir << PHYSFS_getUserDir() << "/." << win32.appName << "/";
     if((mkdir(sdir.str().c_str()) != 0) && (errno != EEXIST))
-        logError("Couldn't create directory for saving configuration file. (%s)", sdir.str().c_str());
+        logError("ERROR: Couldn't create directory for saving configuration file. (%s)", sdir.str().c_str());
     return sdir.str();
 }
 

src/framework/platform/x11platform.cpp

@@ -234,18 +234,18 @@ void Platform::init(const char *appName)
     // open display
     x11.display = XOpenDisplay(0);
     if(!x11.display)
-        logFatal("Failed to open X display");
+        logFatal("FATAL ERROR: Failed to open X display");
 
     // check if GLX is supported on this display
     if(!glXQueryExtension(x11.display, 0, 0))
-        logFatal("GLX not supported");
+        logFatal("FATAL ERROR: GLX not supported");
 
     // retrieve GLX version
     int glxMajor;
     int glxMinor;
     if(!glXQueryVersion(x11.display, &glxMajor, &glxMinor))
-        logFatal("Unable to query GLX version");
+        logFatal("FATAL ERROR: Unable to query GLX version");
-    logInfo("GLX version %d.%d", glxMajor, glxMinor);
+    flogInfo("GLX version %d.%d", glxMajor % glxMinor);
 
     // clipboard related atoms
     x11.atomClipboard = XInternAtom(x11.display, "CLIPBOARD", False);
@@ -497,12 +497,12 @@ bool Platform::createWindow(int x, int y, int width, int height, int minWidth, i
     // choose OpenGL, RGBA, double buffered, visual
     x11.visual = glXChooseVisual(x11.display, DefaultScreen(x11.display), attrList);
     if(!x11.visual)
-        logFatal("RGBA/Double buffered visual not supported");
+        logFatal("FATAL ERROR: RGBA/Double buffered visual not supported");
 
     // create GLX context
     x11.glxContext = glXCreateContext(x11.display, x11.visual, 0, GL_TRUE);
     if(!x11.glxContext)
-        logFatal("Unable to create GLX context");
+        logFatal("FATAL ERROR: Unable to create GLX context");
 
     // color map
     x11.colormap  = XCreateColormap(x11.display,
@@ -535,7 +535,7 @@ bool Platform::createWindow(int x, int y, int width, int height, int minWidth, i
                              &wa);
 
     if(!x11.window)
-        logFatal("Unable to create X window");
+        logFatal("FATAL ERROR: Unable to create X window");
 
     //  create input context (to have better key input handling)
     if(XSupportsLocale()) {
@@ -547,11 +547,11 @@ bool Platform::createWindow(int x, int y, int width, int height, int minWidth, i
                                     XIMPreeditNothing | XIMStatusNothing,
                                     XNClientWindow, x11.window, NULL);
             if(!x11.xic)
-                logError("Unable to create the input context");
+                logError("ERROR: Unable to create the input context");
         } else
-            logError("Failed to open an input method");
+            logError("ERROR: Failed to open an input method");
     } else
-        logError("X11 does not support the current locale");
+        logError("ERROR: X11 does not support the current locale");
 
     if(!x11.xic)
         logWarning("Input of special keys maybe messed up because we couldn't create an input context");
@@ -836,6 +836,6 @@ std::string Platform::getAppUserDir()
     std::stringstream sdir;
     sdir << PHYSFS_getUserDir() << "/." << x11.appName << "/";
     if((mkdir(sdir.str().c_str(), S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH) != 0) && (errno != EEXIST))
-        logError("Couldn't create directory for saving configuration file. (%s)", sdir.str().c_str());
+        flogError("ERROR: Couldn't create directory for saving configuration file. (%s)", sdir.str().c_str());
     return sdir.str();
 }

src/framework/prerequisites.h

@@ -62,7 +62,6 @@ typedef int8_t int8;
 
 // boost utilities
 #include <boost/algorithm/string.hpp>
-#include <boost/lexical_cast.hpp>
 #include <boost/foreach.hpp>
 #include <boost/bind.hpp>
 #include <boost/function.hpp>
@@ -72,7 +71,7 @@ typedef int8_t int8;
 #include <boost/signals.hpp>
 #define foreach BOOST_FOREACH
 
-typedef boost::function<void()> Callback;
+typedef boost::function<void()> SimpleCallback;
 
 // yaml
 #include <yaml-cpp/yaml.h>

src/framework/script/luafunctions.cpp

@@ -61,12 +61,19 @@ int LuaScript::lua_loadUI()
 {
     UIContainerPtr parent;
     if(getStackSize() > 1) {
-        parent = boost::static_pointer_cast<UIContainer>(popClassInstance());
+        parent = boost::dynamic_pointer_cast<UIContainer>(popClassInstance());
     } else {
         parent = UIContainer::getRootContainer();
     }
+
     std::string uiFile = popString();
-    UIElementPtr element = UILoader::loadFile(uiFile.c_str(), parent);
+
+    UIElementPtr element;
+    if(parent)
+        element = UILoader::loadFile(uiFile.c_str(), parent);
+    else
+        reportErrorWithTraceback("invalid parent container");
+
     pushClassInstance(element);
     return 1;
 }
@@ -78,7 +85,6 @@ int LuaScript::lua_getUIRootContainer()
     return 1;
 }
 
-
 int LuaScript::lua_setOnApplicationClose()
 {
     int funcRef = popFunction();
@@ -91,7 +97,7 @@ int LuaScript::lua_setOnApplicationClose()
 
 int LuaScript::lua_UIElement_destroy()
 {
-    UIElementPtr element = boost::static_pointer_cast<UIElement>(popClassInstance());
+    UIElementPtr element = boost::dynamic_pointer_cast<UIElement>(popClassInstance());
     if(element)
         element->destroy();
     else
@@ -101,7 +107,7 @@ int LuaScript::lua_UIElement_destroy()
 
 int LuaScript::lua_UIElement_getParent()
 {
-    UIElementPtr element = boost::static_pointer_cast<UIElement>(popClassInstance());
+    UIElementPtr element = boost::dynamic_pointer_cast<UIElement>(popClassInstance());
     if(element)
         pushClassInstance(element->getParent());
     else
@@ -111,13 +117,13 @@ int LuaScript::lua_UIElement_getParent()
 
 int LuaScript::lua_UIButton_setOnClick()
 {
-    lua_insert(L, -2);
+    moveTop(-2);
-    UIButtonPtr button = boost::static_pointer_cast<UIButton>(popClassInstance());
+    UIButtonPtr button = boost::dynamic_pointer_cast<UIButton>(popClassInstance());
     if(button) {
         int funcRef = popFunction();
         button->setOnClick([this, funcRef](UIButtonPtr button) {
             pushFunction(funcRef);
-            setSelf(button);
+            setLocal(button, "self");
             callFunction();
         });
     } else {
@@ -129,7 +135,7 @@ int LuaScript::lua_UIButton_setOnClick()
 int LuaScript::lua_UIContainer_getChildByID()
 {
     std::string id = popString();
-    UIContainerPtr container = boost::static_pointer_cast<UIContainer>(popClassInstance());
+    UIContainerPtr container = boost::dynamic_pointer_cast<UIContainer>(popClassInstance());
     if(container)
         pushClassInstance(container->getChildById(id));
     else
@@ -139,9 +145,14 @@ int LuaScript::lua_UIContainer_getChildByID()
 
 int LuaScript::lua_UIContainer_lock()
 {
-    UIElementPtr element = boost::static_pointer_cast<UIElement>(popClassInstance());
+    UIElementPtr element = boost::dynamic_pointer_cast<UIElement>(popClassInstance());
-    UIContainerPtr container = boost::static_pointer_cast<UIContainer>(popClassInstance());
+    UIContainerPtr container = boost::dynamic_pointer_cast<UIContainer>(popClassInstance());
-    if(container && element) {
+    if(!element) {
+        reportFuncErrorWithTraceback("invalid lock element");
+        return 1;
+    }
+
+    if(container) {
         container->lockElement(element);
     }
     return 1;
@@ -149,7 +160,7 @@ int LuaScript::lua_UIContainer_lock()
 
 int LuaScript::lua_UIContainer_unlock()
 {
-    UIContainerPtr container = boost::static_pointer_cast<UIContainer>(popClassInstance());
+    UIContainerPtr container = boost::dynamic_pointer_cast<UIContainer>(popClassInstance());
     if(container) {
         container->unlockElement();
     }

src/framework/script/luascript.cpp

@@ -32,7 +32,7 @@ LuaScript::LuaScript()
 {
     L = luaL_newstate();
     if(!L)
-        logFatal("could not create lua context");
+        logFatal("FATAL ERROR: could not create lua context");
 
     // load lua standard libraries
     luaL_openlibs(L);
@@ -64,7 +64,7 @@ void LuaScript::loadAllModules()
 bool LuaScript::loadFile(const std::string& fileName)
 {
     if(!g_resources.fileExists(fileName)) {
-        logError("script file '%s' doesn't exist", fileName.c_str());
+        flogError("ERROR: script file '%s' doesn't exist", fileName.c_str());
         return false;
     }
     std::string fileContents = g_resources.loadTextFile(fileName);
@@ -114,11 +114,18 @@ int LuaScript::loadBufferAsFunction(const std::string& text, const std::string&
 void LuaScript::reportError(const std::string& errorDesc, const char *funcName)
 {
     std::stringstream ss;
-    ss << "LUA script error";
+    ss << "LUA Script ERROR: ";
     if(funcName)
-        ss << " in " << funcName << "()";
+        ss << " in " << funcName << "(): ";
-    ss << ": " << errorDesc << std::endl;
+    ss << errorDesc << std::endl;
-    logError(ss.str().c_str());
+    logError(ss.str());
+}
+
+void LuaScript::reportErrorWithTraceback(const std::string& errorDesc, const char* funcName)
+{
+    pushString(errorDesc);
+    luaErrorHandler(L);
+    reportError(popString(), funcName);
 }
 
 int LuaScript::getStackSize()
@@ -126,6 +133,11 @@ int LuaScript::getStackSize()
     return lua_gettop(L);
 }
 
+void LuaScript::moveTop(int index)
+{
+    lua_insert(L, index);
+}
+
 void LuaScript::pop(int n)
 {
     lua_pop(L, n);
@@ -141,15 +153,15 @@ bool LuaScript::popBoolean()
 int32_t LuaScript::popInteger()
 {
     double d = lua_tonumber(L, -1);
-    pop(1);
+    pop();
     return (int)d;
 }
 
 std::string LuaScript::popString()
 {
-    size_t len;
+    std::string str;
-    const char *cstr = lua_tolstring(L, -1, &len);
+    if(lua_isstring(L, -1))
-    std::string str(cstr, len);
+        str = lua_tostring(L, -1);
     pop();
     return str;
 }
@@ -181,8 +193,10 @@ void LuaScript::pushUserdata(void* ptr)
 
 void LuaScript::pushClassInstance(const ScriptablePtr& object)
 {
-    if(object && object->getScriptableName()) {
+    if(object) {
+        // create weak_ptr to the scriptable object stored as userdata
         new(lua_newuserdata(L, sizeof(ScriptableWeakPtr))) ScriptableWeakPtr(object);
+        // set object metatable
         lua_getfield(L, LUA_REGISTRYINDEX, (std::string(object->getScriptableName()) + "_mt").c_str());
         lua_setmetatable(L, -2);
     } else {
@@ -192,18 +206,14 @@ void LuaScript::pushClassInstance(const ScriptablePtr& object)
 
 ScriptablePtr LuaScript::popClassInstance()
 {
-    if(!lua_isuserdata(L, -1)) {
+    ScriptablePtr object;
-        reportError(format("couldn't pop a class instance, top objet is not a valid type (%s)", luaL_typename(L, -1)));
+    if(lua_isuserdata(L, -1)) { // instances are store as userdata
-        lua_pop(L, 1);
+        object = ((ScriptableWeakPtr *)lua_touserdata(L, -1))->lock();
-        return ScriptablePtr();
-    }
-
-    ScriptableWeakPtr *objectRef = (ScriptableWeakPtr *)lua_touserdata(L, -1);
-    lua_pop(L, 1);
-
-    ScriptablePtr object = objectRef->lock();
         if(!object)
-        reportError(format("attempt to retrive class instance from a object that is already expired"));
+            reportErrorWithTraceback("attempt to retrive class instance from a object that is already expired");
+    } else if(!lua_isnil(L, -1)) // we accept nil values
+        reportErrorWithTraceback("couldn't retrive class instance, the value is not a scriptable type");
+    lua_pop(L, 1);
     return object;
 }
 
@@ -240,11 +250,11 @@ void LuaScript::callFunction(int numArgs)
         reportError("stack size changed!");
 }
 
-void LuaScript::setSelf(const ScriptablePtr& scriptable, int envIndex)
+void LuaScript::setLocal(const ScriptablePtr& scriptable, const char *varName, int envIndex)
 {
     lua_getfenv(L, envIndex);
     pushClassInstance(scriptable);
-    lua_setfield(L, -2, "self");
+    lua_setfield(L, -2, varName);
     lua_pop(L, 1);
 }
 
@@ -382,24 +392,36 @@ int LuaScript::luaCompareClassInstances(lua_State* L)
 
 int LuaScript::luaFunctionCallback(lua_State* L)
 {
+    // look for function id
     int id = lua_tonumber(L, lua_upvalueindex(1));
+    // call the function
     return (g_lua.*(g_lua.m_functions[id]))();
 }
 
 int LuaScript::luaErrorHandler(lua_State *L)
 {
+    // push debug
     lua_getfield(L, LUA_GLOBALSINDEX, "debug");
     if(!lua_istable(L, -1)) {
         lua_pop(L, 1);
         return 1;
     }
+    // push debug.traceback
     lua_getfield(L, -1, "traceback");
     if(!lua_isfunction(L, -1)) {
         lua_pop(L, 2);
         return 1;
     }
-    lua_pushvalue(L, 1);
+    // remove debug
+    lua_remove(L, -2);
+    // push additional error message
+    lua_pushvalue(L, -2);
+    // push level
     lua_pushinteger(L, 2);
+    // call debug.traceback
     lua_call(L, 2, 1);
+    // remove additional error message
+    lua_remove(L, -2);
+    // return, the complete error message is on the stack
     return 1;
 }

src/framework/script/luascript.h

@@ -30,6 +30,7 @@
 #include <lua.hpp>
 
 #define reportFuncError(a) reportError(a, __FUNCTION__)
+#define reportFuncErrorWithTraceback(a) reportErrorWithTraceback(a, __FUNCTION__)
 
 class LuaScript
 {
@@ -42,8 +43,10 @@ public:
     bool loadBuffer(const std::string& text, const std::string& what = "luaBuffer");
     int loadBufferAsFunction(const std::string& text, const std::string& what = "luaBuffer");
     void reportError(const std::string& errorDesc, const char *funcName = NULL);
+    void reportErrorWithTraceback(const std::string& errorDesc, const char *funcName = NULL);
 
     int getStackSize();
+    void moveTop(int index);
 
     void pushNil();
     void pushBoolean(bool b);
@@ -61,7 +64,7 @@ public:
     void releaseFunction(int functionRef);
     void callFunction(int numArgs = 0);
 
-    void setSelf(const ScriptablePtr& scriptable, int envIndex = -1);
+    void setLocal(const ScriptablePtr& scriptable, const char *varName, int envIndex = -1);
 
     void pushClassInstance(const ScriptablePtr& object);
     ScriptablePtr popClassInstance();

src/framework/ui/uilayout.cpp

@@ -47,7 +47,7 @@ int AnchorLine::getPos() const
                 return 0;
         }
     }
-    logError("anchor line of an element has expired, your UI is missconfigured");
+    logError("ERROR: anchor line of an element has expired, your UI is missconfigured");
     return 0;
 }
 
@@ -74,7 +74,7 @@ bool UILayout::addAnchor(EAnchorType type, const AnchorLine& anchorLine)
 {
     // we can never anchor with itself
     if(anchorLine.getRelativeElement() == asUILayout()) {
-        logError("anchoring with itself is not possible");
+        logError("ERROR: anchoring with itself is not possible");
         return false;
     }
 
@@ -82,7 +82,7 @@ bool UILayout::addAnchor(EAnchorType type, const AnchorLine& anchorLine)
     // this only happens in missconfigurations
     for(auto it = m_anchoredElements.begin(); it != m_anchoredElements.end(); ++it) {
         if((*it).lock() == anchorLine.getRelativeElement()) {
-            logError("anchoring elements with each other is not possible");
+            logError("ERROR: anchoring elements with each other is not possible");
             return false;
         }
     }

src/framework/ui/uiloader.cpp

@@ -67,7 +67,7 @@ UIElementPtr UILoader::loadFile(const std::string& file, const UIContainerPtr& p
 {
     std::string fileContents = g_resources.loadTextFile(file);
     if(!fileContents.size()) {
-        logError("Could not load ui file \"%s",  file.c_str());
+        flogError("ERROR: Could not load ui file \"%s",  file.c_str());
         return UIElementPtr();
     }
 
@@ -101,7 +101,7 @@ UIElementPtr UILoader::loadFile(const std::string& file, const UIContainerPtr& p
 
         return element;
     } catch (YAML::Exception& e) {
-        logError("Failed to load ui file \"%s\":\n  %s", file.c_str(), e.what());
+        flogError("ERROR: Failed to load ui file \"%s\":\n  %s", file.c_str() % e.what());
     }
 
     return UIElementPtr();

src/framework/ui/uiskins.cpp

@@ -38,7 +38,7 @@ void UISkins::load(const std::string& skinsFile)
 {
     std::string fileContents = g_resources.loadTextFile(skinsFile);
     if(!fileContents.size())
-        logFatal("Could not load skin file \"%s",  skinsFile.c_str());
+        flogFatal("FATAL ERROR: Could not load skin file \"%s",  skinsFile.c_str());
 
     std::istringstream fin(fileContents);
 
@@ -126,7 +126,7 @@ void UISkins::load(const std::string& skinsFile)
             }
         }
     } catch (YAML::Exception& e) {
-        logFatal("Malformed skin file \"%s\":\n  %s", skinsFile.c_str(), e.what());
+        flogFatal("FATAL ERROR: Malformed skin file \"%s\":\n  %s", skinsFile.c_str() % e.what());
     }
 }
 
@@ -143,6 +143,6 @@ UIElementSkinPtr UISkins::getElementSkin(UI::EElementType elementType, const std
         if(elementType == skin->getElementType() && name == skin->getName())
             return skin;
     }
-    logWarning("Element skin '%s' not found", name.c_str());
+    flogWarning("Element skin '%s' not found", name.c_str());
     return UIElementSkinPtr();
 }

src/framework/util/logger.cpp

@@ -26,17 +26,10 @@
 
 #include <iostream>
 #include <cstdlib>
-#include <stdarg.h>
 
-void Logger::_log(int level, const char *trace, const char *format, ...)
+void Logger::log(int level, const std::string& text, const char *trace)
 {
-    va_list args;
     std::string strace;
-
-    va_start(args, format);
-    std::string text = vformat(format, args);
-    va_end(args);
-
     if(trace) {
         strace = trace;
         strace = strace.substr(0, strace.find_first_of('('));
@@ -54,8 +47,6 @@ void Logger::_log(int level, const char *trace, const char *format, ...)
     if(!strace.empty())
         std::cout << "[" << strace << "] ";
 
-    static char const *prefixes[] = { "FATAL ERROR: ", "ERROR: ", "WARNING: ", "", "", "" };
-    std::cout << prefixes[level];
     std::cout << text;
 
 #ifdef linux
@@ -68,3 +59,4 @@ void Logger::_log(int level, const char *trace, const char *format, ...)
     if(level == LFATAL)
         exit(-1);
 }
+

src/framework/util/logger.h

@@ -26,33 +26,39 @@
 #define LOGGER_H
 
 #include <sstream>
+#include <boost/format.hpp>
 
-namespace Logger {
+class Logger {
-
+public:
-enum ELogLevel {
+    enum ELogLevel {
         LFATAL = 0,
         LERROR,
         LWARNING,
         LINFO,
         LDEBUG
+    };
+
+    static void log(int level, const std::string& text = "", const char *trace = NULL);
 };
 
-void _log(int level, const char *trace, const char *format, ...);
+#define logFatal(a) Logger::log(Logger::LFATAL, a)
+#define logError(a) Logger::log(Logger::LERROR, a)
+#define logWarning(a) Logger::log(Logger::LWARNING, a)
+#define logDebug(a) Logger::log(Logger::LDEBUG, a)
+#define logInfo(a) Logger::log(Logger::LINFO, a)
 
-}
+#define flogFatal(a,b) Logger::log(Logger::LFATAL, (boost::format(a) % b).str())
+#define flogError(a,b) Logger::log(Logger::LERROR, (boost::format(a) % b).str())
+#define flogWarning(a,b) Logger::log(Logger::LWARNING, (boost::format(a) % b).str())
+#define flogDebug(a,b) Logger::log(Logger::LDEBUG, (boost::format(a) % b).str())
+#define flogInfo(a,b) Logger::log(Logger::LINFO, (boost::format(a) % b).str())
 
-#define logFatal(...) Logger::_log(Logger::LFATAL, NULL, __VA_ARGS__)
+#define logTrace() Logger::log(Logger::LDEBUG, "", __PRETTY_FUNCTION__)
-#define logError(...) Logger::_log(Logger::LERROR, NULL, __VA_ARGS__)
+#define logTraceFatal(a) Logger::log(Logger::LFATAL, a, __PRETTY_FUNCTION__)
-#define logWarning(...) Logger::_log(Logger::LWARNING, NULL, __VA_ARGS__)
+#define logTraceError(a) Logger::log(Logger::LERROR, a, __PRETTY_FUNCTION__)
-#define logDebug(...) Logger::_log(Logger::LDEBUG, NULL, __VA_ARGS__)
+#define logTraceWarning(a) Logger::log(Logger::LWARNING, a, __PRETTY_FUNCTION__)
-#define logInfo(...) Logger::_log(Logger::LINFO, NULL, __VA_ARGS__)
+#define logTraceDebug(a) Logger::log(Logger::LDEBUG, a, __PRETTY_FUNCTION__)
-
+#define logTraceInfo(a) Logger::log(Logger::LINFO, a, __PRETTY_FUNCTION__)
-#define logTrace() Logger::_log(Logger::LDEBUG, __PRETTY_FUNCTION__, "")
-#define logTraceFatal(...) Logger::_log(Logger::LFATAL, __PRETTY_FUNCTION__, __VA_ARGS__)
-#define logTraceError(...) Logger::_log(Logger::LERROR, __PRETTY_FUNCTION__, __VA_ARGS__)
-#define logTraceWarning(...) Logger::_log(Logger::LWARNING, __PRETTY_FUNCTION__, __VA_ARGS__)
-#define logTraceDebug(...) Logger::_log(Logger::LDEBUG, __PRETTY_FUNCTION__, __VA_ARGS__)
-#define logTraceInfo(...) Logger::_log(Logger::LINFO, __PRETTY_FUNCTION__, __VA_ARGS__)
 
 struct Dump {
 public:
@@ -65,4 +71,4 @@ private:
 
 #define dump Dump()
 
-#endif
+#endif // LOGGER_H

src/framework/util/util.cpp

@@ -23,30 +23,3 @@
 
 #include <util/util.h>
 #include <cstdio>
-
-std::string vformat(const char *format, va_list args)
-{
-    if(!format)
-        return "";
-    int result = -1, length = 256;
-    char *buffer = 0;
-    while(result == -1) {
-        if(buffer)
-            delete [] buffer;
-        buffer = new char [length + 1];
-        result = vsnprintf(buffer, length, format, args);
-        length *= 2;
-    }
-    std::string s(buffer);
-    delete [] buffer;
-    return s;
-}
-
-std::string format(const char *format, ...)
-{
-    va_list args;
-    va_start(args, format);
-    std::string s = vformat(format, args);
-    va_end(args);
-    return s;
-}

src/framework/util/util.h

@@ -26,14 +26,11 @@
 #define UTIL_H
 
 #include <util/logger.h>
-#include <stdarg.h>
 #include <boost/lexical_cast.hpp>
+#include <boost/format.hpp>
 
-/// Formatting like printf for std::string, va_list input version
+/// Easy/fast writting formater
-std::string vformat(const char *format, va_list args);
+#define f(a, b) (boost::format(a) % b).str()
-
-/// Formatting like printf for std::string
-std::string format(const char *format, ...);
 
 /// Convert any data type through boost::lexical_cast
 template<class R, class T> 
@@ -43,9 +40,9 @@ R convertType(T t)
     try {
         ret = boost::lexical_cast<R>(t);
     } catch(boost::bad_lexical_cast bad) {
-        logError("Error converting type: %s", bad.what());
+        flogError("Error converting type: %s", bad.what());
     }
     return ret;
 }
 
-#endif
+#endif // UTIL_H

src/main.cpp

@@ -121,7 +121,7 @@ int main(int argc, const char *argv[])
     g_lua.loadAllModules();
 
     if(!UIContainer::getRootContainer()->getChildCount())
-        logFatal("no ui loaded at all, no reason to continue running");
+        logFatal("FATAL ERROR: no ui loaded at all, no reason to continue running");
 
     Platform::showWindow();
     //Platform::hideMouseCursor();