diff --git a/TODO b/TODO
index 1555507c..d893ffbe 100644
--- a/TODO
+++ b/TODO
@@ -25,7 +25,7 @@ setOnClose
 review and reenable some warnings
 make lua/c++ logger more friendly
 bind every global lua function in a static class
-use metatable for Point,Rect,Color,Size lua classes
+use metatable for  lua classes
 set special types for g_configs like lists/point/size
 create a class for reading binary files
 handle corrupt errors in dat/spr
@@ -38,7 +38,10 @@ use indices in CoordsBuffer
 
 move UICheckBox to lua
 move UIWindow to lua
+create UIMessageBox, UIToolTip and UIInputBox
 rework UI image style
 class UIImage and UIText
 add UI border
-fix style inheretance using a style translator
\ No newline at end of file
+fix style inheretance using a style translator
+
+make possible to bind non LuaObject derived classes on lua engine (for usage with Point,Rect,Color,Size)
\ No newline at end of file
diff --git a/modules/addon_mapeffects/mapeffects.lua b/modules/addon_mapeffects/mapeffects.lua
new file mode 100644
index 00000000..e6c9fced
--- /dev/null
+++ b/modules/addon_mapeffects/mapeffects.lua
@@ -0,0 +1,14 @@
+MapEffects = {}
+
+function MapEffects.init()
+  local box = createWidget('ComboBox')
+  box:moveTo({x=100, y=8})
+  box:addOption('Normal')
+  box:addOption('Bloom')
+  box:addOption('TV')
+  --displayUI(box)
+end
+
+function MapEffects.terminate()
+
+end
diff --git a/modules/addon_mapeffects/mapeffects.otmod b/modules/addon_mapeffects/mapeffects.otmod
new file mode 100644
index 00000000..90172be6
--- /dev/null
+++ b/modules/addon_mapeffects/mapeffects.otmod
@@ -0,0 +1,16 @@
+Module
+  name: mapeffects
+  description: Contains experimental shader effects for map
+  author: OTClient team
+  website: https://github.com/edubart/otclient
+
+  // console can be loaded after core
+  autoLoad: true
+  autoLoadPriority: 1000
+
+  onLoad: |
+    require 'mapeffects'
+    MapEffects.init()
+
+  onUnload: |
+    MapEffects.terminate()
diff --git a/modules/client/client.lua b/modules/client/client.lua
index c6577c83..816b61c1 100644
--- a/modules/client/client.lua
+++ b/modules/client/client.lua
@@ -2,6 +2,7 @@ Client = {}
 
 -- TODO: load and save configurations
 function Client.init()
+  -- set default settings
   g_window.show()
   g_window.setMinimumSize({ width = 550, height = 450 })
 
@@ -9,14 +10,21 @@ function Client.init()
   if g_window.getPlatformType() == "X11-EGL" then
     g_window.setFullscreen(true)
   else
-    local size = { width = 1024,
-                   height = 768 }
+    -- window size
+    local size = { width = 800, height = 600 }
+    size = Settings.getSize('window-size', size)
     g_window.resize(size)
 
+    -- window position, default is the screen center
     local displaySize = g_window.getDisplaySize()
     local pos = { x = (displaySize.width - size.width)/2,
                   y = (displaySize.height - size.height)/2 }
+    pos = Settings.getPoint('window-pos', size)
     g_window.move(pos)
+
+    -- window maximized?
+    local maximized = Settings.getBoolean('window-maximized', false)
+    if maximized then g_window.maximize() end
   end
 
   g_window.setTitle('OTClient')
@@ -28,4 +36,7 @@ function Client.init()
 end
 
 function Client.terminate()
+  Settings.set('window-size', g_window.getUnmaximizedSize())
+  Settings.set('window-pos', g_window.getUnmaximizedPos())
+  Settings.set('window-maximized', g_window.isMaximized())
 end
diff --git a/modules/client_entergame/entergame.otui b/modules/client_entergame/entergame.otui
index f07f2525..a811fad1 100644
--- a/modules/client_entergame/entergame.otui
+++ b/modules/client_entergame/entergame.otui
@@ -78,10 +78,7 @@ MainWindow
     margin-top: 10
     margin-left: 18
     margin-right: 18
-    @onCheckChange: |
-      function(self, checked)
-        self:getParent():getChildById('autoLoginBox'):setEnabled(checked)
-      end
+    @onCheckChange: self:getParent():getChildById('autoLoginBox'):setEnabled(self:isChecked())
 
   CheckBox
     id: autoLoginBox
diff --git a/modules/client_options/options.lua b/modules/client_options/options.lua
index 42f11087..14b164d9 100644
--- a/modules/client_options/options.lua
+++ b/modules/client_options/options.lua
@@ -1,72 +1,34 @@
 Options = {}
 
--- private variables
-local options
-local fpsEnabled = false
-local vsyncEnabled = false
+-- public functions
+function Options.load()
+  -- set default settings
+  Settings.setDefault('vsync', true)
+  Settings.setDefault('showfps', true)
+
+  -- load the options
+  Options.enableVsync(Settings.getBoolean('vsync'))
+  Options.enableFps(Settings.getBoolean('showfps'))
+end
 
-function getConfig(name, default)
-  if g_configs.exists(name) then
-    local val = g_configs.get(name):trim()
-    if val == 'true' or val == 'false' then
-      return toboolean(val)
-    else
-      return val
-    end
-  else
-    if default ~= nil then
-      g_configs.set(name, default)
-      return default
-    else
-      return nil
-    end
-  end
+function Options.show()
+  displayUI('options.otui', { locked = true })
 end
 
-function setConfig(name, value)
-  g_configs.set(name, tostring(value))
+function Options.openWebpage()
+  displayErrorBox("Error", "Not implemented yet")
 end
 
 -- private functions
 function Options.enableVsync(on)
-  vsyncEnabled = on
   g_window.setVerticalSync(on)
-  setConfig('vsync', on)
+  Settings.set('vsync', on)
+  Options.vsync = on
 end
 
 function Options.enableFps(on)
-  fpsEnabled = on
   local frameCounter = rootWidget:recursiveGetChildById('frameCounter')
   frameCounter:setVisible(on)
-  setConfig('showfps', on)
-end
-
--- public functions
-function Options.create()
-  options = displayUI('options.otui', { locked = true })
-
-  local fpsBox = options:getChildById('fpsCheckBox')
-  local vsyncBox = options:getChildById('vsyncCheckBox')
-
-  fpsBox:setChecked(fpsEnabled)
-  vsyncBox:setChecked(vsyncEnabled)
-
-  fpsBox.onCheckChange = function(self, checked) Options.enableFps(checked) end
-  vsyncBox.onCheckChange = function(self, checked) Options.enableVsync(checked) end
-end
-
-function Options.load()
-  Options.enableVsync(getConfig('vsync', true))
-  Options.enableFps(getConfig('showfps', true))
-end
-
-function Options.destroy()
-  options:destroy()
-  options = nil
+  Settings.set('showfps', on)
+  Options.fps = on
 end
-
-function Options.openWebpage()
-  displayErrorBox("Error", "Not implemented yet")
-end
-
-addEvent(Options.load)
\ No newline at end of file
diff --git a/modules/client_options/options.otmod b/modules/client_options/options.otmod
index 7e434931..542df62d 100644
--- a/modules/client_options/options.otmod
+++ b/modules/client_options/options.otmod
@@ -6,3 +6,5 @@ Module
 
   onLoad: |
     require 'options'
+    Options.load()
+
diff --git a/modules/client_options/options.otui b/modules/client_options/options.otui
index abd2697d..8e57ad36 100644
--- a/modules/client_options/options.otui
+++ b/modules/client_options/options.otui
@@ -13,6 +13,8 @@ MainWindow
     margin-top: 28
     margin-left: 18
     margin-right: 18
+    @onCheckChange: Options.enableVsync(self:isChecked())
+    @onSetup: self:setChecked(Options.vsync)
 
   CheckBox
     id: fpsCheckBox
@@ -23,6 +25,8 @@ MainWindow
     margin-top: 10
     margin-left: 18
     margin-right: 18
+    @onCheckChange: Options.enableFps(self:isChecked())
+    @onSetup: self:setChecked(Options.fps)
 
   Button
     text: Ok
@@ -31,4 +35,4 @@ MainWindow
     anchors.bottom: parent.bottom
     margin-right: 10
     margin-bottom: 10
-    @onClick: Options.destroy()
\ No newline at end of file
+    @onClick: self:getParent():destroy()
\ No newline at end of file
diff --git a/modules/client_topmenu/topmenu.otui b/modules/client_topmenu/topmenu.otui
index 729ed44a..2ae1c173 100644
--- a/modules/client_topmenu/topmenu.otui
+++ b/modules/client_topmenu/topmenu.otui
@@ -13,7 +13,7 @@ TopPanel
     margin-left: 6
     tooltip: Options
     icon: /core_styles/icons/settings.png
-    @onClick: Options.create()
+    @onClick: Options.show()
 
 
   TopButton
diff --git a/modules/core_lib/core_lib.otmod b/modules/core_lib/core_lib.otmod
index 9eea1d17..5bd5cd40 100644
--- a/modules/core_lib/core_lib.otmod
+++ b/modules/core_lib/core_lib.otmod
@@ -15,6 +15,5 @@ Module
     require 'util'
     require 'globals'
     require 'dispatcher'
-    require 'widget'
     require 'effects'
     require 'settings'
diff --git a/modules/core_lib/dispatcher.lua b/modules/core_lib/dispatcher.lua
index ee13f5a0..0f323c74 100644
--- a/modules/core_lib/dispatcher.lua
+++ b/modules/core_lib/dispatcher.lua
@@ -2,6 +2,7 @@ local eventId = 0
 local eventList = {}
 
 function scheduleEvent(func, delay)
+  if not func then return end
   eventId = eventId + 1
   local id = eventId
   local function proxyFunc()
diff --git a/modules/core_lib/settings.lua b/modules/core_lib/settings.lua
new file mode 100644
index 00000000..d34e07d1
--- /dev/null
+++ b/modules/core_lib/settings.lua
@@ -0,0 +1,79 @@
+Settings = {}
+
+local function convertSettingValue(value)
+  if type(value) == 'table' then
+    if value.x and value.width then
+      return recttostring(value)
+    elseif value.x then
+      return pointtostring(value)
+    elseif value.width then
+      return sizetostring(value)
+    elseif value.r then
+      return colortostring(value)
+    end
+  else
+    return tostring(value)
+  end
+end
+
+function Settings.exists(key)
+  return g_configs.exists(key)
+end
+
+function Settings.remove(key)
+  g_configs.remove(key)
+end
+
+function Settings.set(key, value)
+  g_configs.set(key, convertSettingValue(value))
+end
+
+function Settings.setDefault(key, value)
+  if Settings.exists(key) then return false end
+  Settings.set(key, value)
+  return true
+end
+
+function Settings.get(key, default)
+  if Settings.exists(key) then
+  elseif default ~= nil then
+    Settings.set(key, default)
+  end
+  return g_configs.get(key)
+end
+
+function Settings.getString(key, default)
+  return Settings.get(key, default)
+end
+
+function Settings.getInteger(key, default)
+  return tonumber(Settings.get(key, default))
+end
+
+function Settings.getNumber(key, default)
+  return tonumber(Settings.get(key, default))
+end
+
+function Settings.getBoolean(key, default)
+  return toboolean(Settings.get(key, default))
+end
+
+function Settings.getPoint(key, default)
+  return topoint(Settings.get(key, default))
+end
+
+function Settings.getRect(key, default)
+  return torect(Settings.get(key, default))
+end
+
+function Settings.getSize(key, default)
+  return tosize(Settings.get(key, default))
+end
+
+function Settings.getColor(key, default)
+  return tocolor(Settings.get(key, default))
+end
+
+function Settings.getColor(key, default)
+  return tocolor(Settings.get(key, default))
+end
diff --git a/modules/core_widgets/core_widgets.otmod b/modules/core_widgets/core_widgets.otmod
index 6f1dc31d..7a6b2250 100644
--- a/modules/core_widgets/core_widgets.otmod
+++ b/modules/core_widgets/core_widgets.otmod
@@ -7,6 +7,7 @@ Module
   onLoad: |
     require 'tooltip/tooltip'
     require 'messagebox/messagebox'
+    require 'uiwidget'
     require 'uibutton'
     require 'uilabel'
     require 'uicombobox'
diff --git a/modules/core_widgets/uipopupmenu.lua b/modules/core_widgets/uipopupmenu.lua
index 8b51053d..1a676ac9 100644
--- a/modules/core_widgets/uipopupmenu.lua
+++ b/modules/core_widgets/uipopupmenu.lua
@@ -45,7 +45,7 @@ function UIPopupMenu:onDestroy()
 end
 
 function UIPopupMenu:onMousePress(mousePos, mouseButton)
-  -- clicks outside self area destroys the self
+  -- clicks outside menu area destroys the menu
   if not self:containsPoint(mousePos) then
     self:destroy()
     return true
@@ -61,11 +61,10 @@ function UIPopupMenu:onKeyPress(keyCode, keyText, keyboardModifiers)
   return false
 end
 
-local function onRootGeometryUpdate()
   -- close all menus when the window is resized
+local function onRootGeometryUpdate()
   for i,menu in ipairs(displayedMenuList) do
     menu:destroy()
   end
 end
-
 connect(rootWidget, { onGeometryChange = onRootGeometryUpdate} )
diff --git a/modules/core_lib/widget.lua b/modules/core_widgets/uiwidget.lua
similarity index 100%
rename from modules/core_lib/widget.lua
rename to modules/core_widgets/uiwidget.lua
diff --git a/modules/game_skills/skills.lua b/modules/game_skills/skills.lua
index b2db37b1..153a1a6b 100644
--- a/modules/game_skills/skills.lua
+++ b/modules/game_skills/skills.lua
@@ -19,7 +19,7 @@ end
 
 local function setSkillValue(id, value)
   local skill = skillWindow:recursiveGetChildById(id)
-  
+
   if skill then
     local widget = skill:getChildById('value')
     widget:setText(value)
@@ -28,11 +28,11 @@ end
 
 local function setSkillPercent(id, percent, tooltip)
   local skill = skillWindow:recursiveGetChildById(id)
-  
+
   if skill then
     local widget = skill:getChildById('percent')
     widget:setPercent(percent)
-    
+
     if tooltip then
       widget:setTooltip(tooltip)
     end
@@ -49,6 +49,19 @@ function Skills.destroy()
   skillWindow = nil
 end
 
+function Skills.onSkillButtonClick(button)
+  local percentBar = button:getChildById('percent')
+  if percentBar then
+    percentBar:setVisible(not percentBar:isVisible())
+    if percentBar:isVisible() then
+      button:setHeight(21)
+    else
+      button:setHeight(21 - 6)
+    end
+    button:updateParentLayout()
+  end
+end
+
 -- hooked events
 function Skills.onExperienceChange(value)
   setSkillValue('experience', getNumberString(value))
@@ -82,7 +95,7 @@ function Skills.onStaminaChange(stamina)
     minutes = '0' .. minutes
   end
   local percent = 100 * stamina / (42 * 60) -- max is 42 hours
-  
+
   setSkillValue('stamina', hours .. ":" .. minutes)
   setSkillPercent('stamina', percent, 'You have ' .. percent .. ' percent')
 end
diff --git a/modules/game_skills/skills.otui b/modules/game_skills/skills.otui
index 4d0dadc4..39793cfd 100644
--- a/modules/game_skills/skills.otui
+++ b/modules/game_skills/skills.otui
@@ -5,20 +5,7 @@ SkillButton < UIButton
   margin-top: 3
   margin-left: 10
   margin-right: 10
-
-  @onClick: |
-    function(self)
-      local percentBar = self:getChildById('percent')
-      if percentBar then
-        percentBar:setVisible(not percentBar:isVisible())
-        if percentBar:isVisible() then
-          self:setHeight(21)
-        else
-          self:setHeight(21 - 6)
-        end
-        self:updateParentLayout()
-      end
-    end
+  &onClick: Skills.onSkillButtonClick
 
 SkillNameLabel < GameLabel
   font: verdana-11px-monochrome
diff --git a/src/framework/luafunctions.cpp b/src/framework/luafunctions.cpp
index ca878208..dc4f6937 100644
--- a/src/framework/luafunctions.cpp
+++ b/src/framework/luafunctions.cpp
@@ -31,25 +31,17 @@
 #include <framework/graphics/graphics.h>
 #include <framework/platform/platformwindow.h>
 
-class LuaRect : public LuaObject, public Rect {
-public:
-    LuaRect() : TRect() { }
-};
-
 void Application::registerLuaFunctions()
 {
-    // globals
-    g_lua.registerStaticClass("Rect");
-    g_lua.bindClassStaticFunction("Rect", "create", []{ return std::shared_ptr<LuaRect>(new LuaRect); });
-    g_lua.bindClassMemberFunction<LuaRect>("Rect", "resize", (void (Rect::*)(int,int)) &Rect::resize);
-
-    /*
-    g_lua.bindGlobalFunction("torect", [](const std::string& str) { return Fw::unsafeCast<Rect>(str); });
-    g_lua.bindGlobalFunction("topoint", [](const std::string& str) { return Fw::unsafeCast<Point>(str); });
-    g_lua.bindGlobalFunction("tocolor", [](const std::string& str) { return Fw::unsafeCast<Color>(str); });
-    g_lua.bindGlobalFunction("tosize", [](const std::string& str) { return Fw::unsafeCast<Size>(str); });
-    g_lua.bindGlobalFunction("toboolean", [](const std::string& str) { return Fw::unsafeCast<bool>(str); });
-    */
+    // conversion globals
+    g_lua.bindGlobalFunction("torect", [](const std::string& v) { return Fw::fromstring<Rect>(v); });
+    g_lua.bindGlobalFunction("topoint", [](const std::string& v) { return Fw::fromstring<Point>(v); });
+    g_lua.bindGlobalFunction("tocolor", [](const std::string& v) { return Fw::fromstring<Color>(v); });
+    g_lua.bindGlobalFunction("tosize", [](const std::string& v) { return Fw::fromstring<Size>(v); });
+    g_lua.bindGlobalFunction("recttostring", [](const Rect& v) { return Fw::tostring(v); });
+    g_lua.bindGlobalFunction("pointtostring", [](const Point& v) { return Fw::tostring(v); });
+    g_lua.bindGlobalFunction("colortostring", [](const Color& v) { return Fw::tostring(v); });
+    g_lua.bindGlobalFunction("sizetostring", [](const Size& v) { return Fw::tostring(v); });
 
     // UIWidget
     g_lua.registerClass<UIWidget>();
@@ -189,25 +181,25 @@ void Application::registerLuaFunctions()
 
     // UIVerticalLayout
     g_lua.registerClass<UIVerticalLayout, UILayout>();
-    g_lua.bindClassStaticFunction<UILayout>("create", &UIVerticalLayout::create);
+    g_lua.bindClassStaticFunction<UIVerticalLayout>("create", [](UIWidgetPtr parent){ return UIVerticalLayoutPtr(new UIVerticalLayout(parent)); } );
     g_lua.bindClassMemberFunction<UIVerticalLayout>("setFitParent", &UIVerticalLayout::setFitParent);
 
     // UIAnchorLayout
     g_lua.registerClass<UIAnchorLayout, UILayout>();
-    g_lua.bindClassStaticFunction<UIAnchorLayout>("create", &UIAnchorLayout::create);
+    g_lua.bindClassStaticFunction<UIAnchorLayout>("create", [](UIWidgetPtr parent){ return UIAnchorLayoutPtr(new UIAnchorLayout(parent)); } );
     g_lua.bindClassMemberFunction<UIAnchorLayout>("removeAnchors", &UIAnchorLayout::removeAnchors);
     g_lua.bindClassMemberFunction<UIAnchorLayout>("centerIn", &UIAnchorLayout::centerIn);
     g_lua.bindClassMemberFunction<UIAnchorLayout>("fill", &UIAnchorLayout::fill);
 
     // UIProgressBar
     g_lua.registerClass<UIProgressBar, UIWidget>();
-    g_lua.bindClassStaticFunction<UIProgressBar>("create", &UIWidget::create<UIProgressBar>);
+    g_lua.bindClassStaticFunction<UIProgressBar>("create", []{ return UIProgressBarPtr(new UIProgressBar); } );
     g_lua.bindClassMemberFunction<UIProgressBar>("getPercent", &UIProgressBar::getPercent);
     g_lua.bindClassMemberFunction<UIProgressBar>("setPercent", &UIProgressBar::setPercent);
 
     // UILineEdit
     g_lua.registerClass<UILineEdit, UIWidget>();
-    g_lua.bindClassStaticFunction<UILineEdit>("create", &UIWidget::create<UILineEdit>);
+    g_lua.bindClassStaticFunction<UILineEdit>("create", []{ return UILineEditPtr(new UILineEdit); } );
     g_lua.bindClassMemberFunction<UILineEdit>("setTextHorizontalMargin", &UILineEdit::setTextHorizontalMargin);
     g_lua.bindClassMemberFunction<UILineEdit>("setCursorPos", &UILineEdit::setCursorPos);
     g_lua.bindClassMemberFunction<UILineEdit>("setCursorEnabled", &UILineEdit::setCursorEnabled);
@@ -226,17 +218,17 @@ void Application::registerLuaFunctions()
 
     // UICheckBox
     g_lua.registerClass<UICheckBox, UIWidget>();
-    g_lua.bindClassStaticFunction<UICheckBox>("create", &UIWidget::create<UICheckBox>);
+    g_lua.bindClassStaticFunction<UICheckBox>("create", []{ return UICheckBoxPtr(new UICheckBox); } );
 
     // UIWindow
     g_lua.registerClass<UIWindow, UIWidget>();
-    g_lua.bindClassStaticFunction<UIWindow>("create", &UIWidget::create<UIWindow>);
+    g_lua.bindClassStaticFunction<UIWindow>("create", []{ return UIWindowPtr(new UIWindow); } );
     g_lua.bindClassMemberFunction<UIWindow>("getTitle", &UIWindow::getTitle);
     g_lua.bindClassMemberFunction<UIWindow>("setTitle", &UIWindow::setTitle);
 
     // UIFrameCounter
     g_lua.registerClass<UIFrameCounter, UIWidget>();
-    g_lua.bindClassStaticFunction<UIFrameCounter>("create", &UIWidget::create<UIFrameCounter>);
+    g_lua.bindClassStaticFunction<UIFrameCounter>("create", []{ return UIFrameCounterPtr(new UIFrameCounter); } );
     g_lua.bindClassMemberFunction<UIFrameCounter>("getFrameCount", &UIFrameCounter::getFrameCount);
 
     // Protocol
@@ -250,21 +242,38 @@ void Application::registerLuaFunctions()
 
 
     g_lua.registerStaticClass("g_window");
-    g_lua.bindClassStaticFunction("g_window", "show", std::bind(&PlatformWindow::show, &g_window));
-    g_lua.bindClassStaticFunction("g_window", "hide", std::bind(&PlatformWindow::hide, &g_window));
     g_lua.bindClassStaticFunction("g_window", "move", std::bind(&PlatformWindow::move, &g_window, _1));
     g_lua.bindClassStaticFunction("g_window", "resize", std::bind(&PlatformWindow::resize, &g_window, _1));
+    g_lua.bindClassStaticFunction("g_window", "show", std::bind(&PlatformWindow::show, &g_window));
+    g_lua.bindClassStaticFunction("g_window", "hide", std::bind(&PlatformWindow::hide, &g_window));
+    g_lua.bindClassStaticFunction("g_window", "maximize", std::bind(&PlatformWindow::maximize, &g_window));
+    g_lua.bindClassStaticFunction("g_window", "showMouse", std::bind(&PlatformWindow::showMouse, &g_window));
+    g_lua.bindClassStaticFunction("g_window", "hideMouse", std::bind(&PlatformWindow::hideMouse, &g_window));
+    g_lua.bindClassStaticFunction("g_window", "setTitle", std::bind(&PlatformWindow::setTitle, &g_window, _1));
     g_lua.bindClassStaticFunction("g_window", "setMinimumSize", std::bind(&PlatformWindow::setMinimumSize, &g_window, _1));
-    g_lua.bindClassStaticFunction("g_window", "setVerticalSync", std::bind(&PlatformWindow::setVerticalSync, &g_window, _1));
     g_lua.bindClassStaticFunction("g_window", "setFullscreen", std::bind(&PlatformWindow::setFullscreen, &g_window, _1));
-    g_lua.bindClassStaticFunction("g_window", "setTitle", std::bind(&PlatformWindow::setTitle, &g_window, _1));
+    g_lua.bindClassStaticFunction("g_window", "setVerticalSync", std::bind(&PlatformWindow::setVerticalSync, &g_window, _1));
     g_lua.bindClassStaticFunction("g_window", "setIcon", std::bind(&PlatformWindow::setIcon, &g_window, _1));
     g_lua.bindClassStaticFunction("g_window", "setClipboardText", std::bind(&PlatformWindow::setClipboardText, &g_window, _1));
-    g_lua.bindClassStaticFunction("g_window", "getMousePos", std::bind(&PlatformWindow::getMousePos, &g_window));
-    g_lua.bindClassStaticFunction("g_window", "getSize", std::bind(&PlatformWindow::getSize, &g_window));
     g_lua.bindClassStaticFunction("g_window", "getDisplaySize", std::bind(&PlatformWindow::getDisplaySize, &g_window));
-    g_lua.bindClassStaticFunction("g_window", "getPlatformType", std::bind(&PlatformWindow::getPlatformType, &g_window));
     g_lua.bindClassStaticFunction("g_window", "getClipboardText", std::bind(&PlatformWindow::getClipboardText, &g_window));
+    g_lua.bindClassStaticFunction("g_window", "getPlatformType", std::bind(&PlatformWindow::getPlatformType, &g_window));
+    g_lua.bindClassStaticFunction("g_window", "getDisplayWidth", std::bind(&PlatformWindow::getDisplayWidth, &g_window));
+    g_lua.bindClassStaticFunction("g_window", "getDisplayHeight", std::bind(&PlatformWindow::getDisplayHeight, &g_window));
+    g_lua.bindClassStaticFunction("g_window", "getUnmaximizedSize", std::bind(&PlatformWindow::getUnmaximizedSize, &g_window));
+    g_lua.bindClassStaticFunction("g_window", "getSize", std::bind(&PlatformWindow::getSize, &g_window));
+    g_lua.bindClassStaticFunction("g_window", "getWidth", std::bind(&PlatformWindow::getWidth, &g_window));
+    g_lua.bindClassStaticFunction("g_window", "getHeight", std::bind(&PlatformWindow::getHeight, &g_window));
+    g_lua.bindClassStaticFunction("g_window", "getUnmaximizedPos", std::bind(&PlatformWindow::getUnmaximizedPos, &g_window));
+    g_lua.bindClassStaticFunction("g_window", "getPos", std::bind(&PlatformWindow::getPos, &g_window));
+    g_lua.bindClassStaticFunction("g_window", "getX", std::bind(&PlatformWindow::getX, &g_window));
+    g_lua.bindClassStaticFunction("g_window", "getY", std::bind(&PlatformWindow::getY, &g_window));
+    g_lua.bindClassStaticFunction("g_window", "getMousePos", std::bind(&PlatformWindow::getMousePos, &g_window));
+    g_lua.bindClassStaticFunction("g_window", "getKeyboardModifiers", std::bind(&PlatformWindow::getKeyboardModifiers, &g_window));
+    g_lua.bindClassStaticFunction("g_window", "isVisible", std::bind(&PlatformWindow::isVisible, &g_window));
+    g_lua.bindClassStaticFunction("g_window", "isFullscreen", std::bind(&PlatformWindow::isFullscreen, &g_window));
+    g_lua.bindClassStaticFunction("g_window", "isMaximized", std::bind(&PlatformWindow::isMaximized, &g_window));
+    g_lua.bindClassStaticFunction("g_window", "hasFocus", std::bind(&PlatformWindow::hasFocus, &g_window));
 
     // Logger
     g_lua.registerClass<Logger>();
diff --git a/src/framework/luascript/luainterface.cpp b/src/framework/luascript/luainterface.cpp
index c4e62c95..57ae62cc 100644
--- a/src/framework/luascript/luainterface.cpp
+++ b/src/framework/luascript/luainterface.cpp
@@ -302,25 +302,26 @@ void LuaInterface::loadScript(const std::string& fileName)
 
 void LuaInterface::loadFunction(const std::string& buffer, const std::string& source)
 {
-    // gets the function contained in that buffer
-    if(boost::starts_with(buffer, "function")) {
-        // evaluate the function
-        std::string buf = Fw::mkstr("__func = ", buffer);
-        loadBuffer(buf, source);
-        safeCall();
-
-        // get the function
-        getGlobal("__func");
-
-        // reset the global __func
+    if(buffer.empty()) {
         pushNil();
-        setGlobal("__func");
+        return;
     }
-    // gets the buffer as a function
-    else if(!buffer.empty())
-        loadBuffer(buffer, source);
+
+    std::string buf;
+    if(boost::starts_with(buffer, "function"))
+        buf = Fw::mkstr("__func = ", buffer);
     else
-        pushNil();
+        buf = Fw::mkstr("__func = function(self)\n", buffer,"\nend");
+
+    loadBuffer(buf, source);
+    safeCall();
+
+    // get the function
+    getGlobal("__func");
+
+    // reset the global __func
+    pushNil();
+    setGlobal("__func");
 }
 
 void LuaInterface::evaluateExpression(const std::string& expression, const std::string& source)
diff --git a/src/framework/platform/platformwindow.cpp b/src/framework/platform/platformwindow.cpp
index ebbc5a21..87a24356 100644
--- a/src/framework/platform/platformwindow.cpp
+++ b/src/framework/platform/platformwindow.cpp
@@ -31,3 +31,11 @@ X11Window window;
 #endif
 
 PlatformWindow& g_window = window;
+
+void PlatformWindow::updateUnmaximizedCoords()
+{
+    if(!isMaximized()) {
+        m_unmaximizedPos = m_pos;
+        m_unmaximizedSize = m_size;
+    }
+}
diff --git a/src/framework/platform/platformwindow.h b/src/framework/platform/platformwindow.h
index 87152731..133ffe4c 100644
--- a/src/framework/platform/platformwindow.h
+++ b/src/framework/platform/platformwindow.h
@@ -59,9 +59,11 @@ public:
     int getDisplayWidth() { return getDisplaySize().width(); }
     int getDisplayHeight() { return getDisplaySize().width(); }
 
+    Size getUnmaximizedSize() { return m_unmaximizedSize; }
     Size getSize() { return m_size; }
     int getWidth() { return m_size.width(); }
     int getHeight() { return m_size.height(); }
+    Point getUnmaximizedPos() { return m_unmaximizedPos; }
     Point getPos() { return m_pos; }
     int getX() { return m_pos.x; }
     int getY() { return m_pos.y; }
@@ -70,6 +72,7 @@ public:
 
     bool isVisible() { return m_visible; }
     bool isFullscreen() { return m_fullscreen; }
+    virtual bool isMaximized() = 0;
     bool hasFocus() { return m_focused; }
 
     void setOnClose(const SimpleCallback& onClose) { m_onClose = onClose; }
@@ -77,8 +80,12 @@ public:
     void setOnInputEvent(const OnInputEventCallback& onInputEvent) { m_onInputEvent = onInputEvent; }
 
 protected:
+    void updateUnmaximizedCoords();
+
     Size m_size;
     Point m_pos;
+    Size m_unmaximizedSize;
+    Point m_unmaximizedPos;
     InputEvent m_inputEvent;
 
     Boolean<false> m_created;
diff --git a/src/framework/platform/win32window.cpp b/src/framework/platform/win32window.cpp
index dda64c2d..0201a2d2 100644
--- a/src/framework/platform/win32window.cpp
+++ b/src/framework/platform/win32window.cpp
@@ -354,6 +354,7 @@ void WIN32Window::resize(const Size& size)
 
 void WIN32Window::show()
 {
+    updateUnmaximizedCoords();
     if(m_maximized)
         ShowWindow(m_window, SW_MAXIMIZE);
     else
@@ -472,6 +473,7 @@ LRESULT WIN32Window::windowProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lPar
         case WM_MOVE: {
             m_pos.x = LOWORD(lParam);
             m_pos.y = HIWORD(lParam);
+            updateUnmaximizedCoords();
             break;
         }
         case WM_SIZE: {
@@ -487,6 +489,7 @@ LRESULT WIN32Window::windowProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lPar
             m_visible = !(wParam == SIZE_MINIMIZED);
             m_size.setWidth(LOWORD(lParam));
             m_size.setHeight(HIWORD(lParam));
+            updateUnmaximizedCoords();
             m_onResize(m_size);
             break;
         }
diff --git a/src/framework/platform/x11window.cpp b/src/framework/platform/x11window.cpp
index 2400babe..eaf66e5e 100644
--- a/src/framework/platform/x11window.cpp
+++ b/src/framework/platform/x11window.cpp
@@ -278,6 +278,7 @@ void X11Window::internalCreateWindow()
         vis = CopyFromParent;
     }
 
+    updateUnmaximizedCoords();
     m_window = XCreateWindow(m_display, m_rootWindow,
                              m_pos.x, m_pos.y, m_size.width(), m_size.height(),
                              0,
@@ -494,6 +495,8 @@ void X11Window::hide()
 
 void X11Window::maximize()
 {
+    updateUnmaximizedCoords();
+
     Atom wmState = XInternAtom(m_display, "_NET_WM_STATE", False);
     Atom wmStateMaximizedVert = XInternAtom(m_display, "_NET_WM_STATE_MAXIMIZED_VERT", False);
     Atom wmStateMaximizedHorz = XInternAtom(m_display, "_NET_WM_STATE_MAXIMIZED_HORZ", False);
@@ -561,6 +564,7 @@ void X11Window::poll()
 
                 // updates window pos
                 m_pos = newPos;
+                updateUnmaximizedCoords();
                 break;
             }
             case SelectionRequest: {
@@ -916,6 +920,9 @@ std::string X11Window::getPlatformType()
 
 bool X11Window::isMaximized()
 {
+    if(!m_display || !m_window)
+        return false;
+
     Atom wmState = XInternAtom(m_display, "_NET_WM_STATE", False);
     Atom wmStateMaximizedVert = XInternAtom(m_display, "_NET_WM_STATE_MAXIMIZED_VERT", False);
     Atom wmStateMaximizedHorz = XInternAtom(m_display, "_NET_WM_STATE_MAXIMIZED_HORZ", False);
@@ -940,7 +947,7 @@ bool X11Window::isMaximized()
         }
 
         if(maximizedMask == 3)
-            maximizedMask = true;
+            maximized = true;
 
         XFree(propertyValue);
     }
diff --git a/src/framework/ui/uianchorlayout.h b/src/framework/ui/uianchorlayout.h
index 16b05e33..c45adbb4 100644
--- a/src/framework/ui/uianchorlayout.h
+++ b/src/framework/ui/uianchorlayout.h
@@ -62,7 +62,6 @@ class UIAnchorLayout : public UILayout
 {
 public:
     UIAnchorLayout(UIWidgetPtr parentWidget) : UILayout(parentWidget) { }
-    static UIAnchorLayoutPtr create(UIWidgetPtr parentWidget) { return UIAnchorLayoutPtr(new UIAnchorLayout(parentWidget)); }
 
     void addAnchor(const UIWidgetPtr& anchoredWidget, Fw::AnchorEdge anchoredEdge,
                    const std::string& hookedWidgetId, Fw::AnchorEdge hookedEdge);
diff --git a/src/framework/ui/uimanager.cpp b/src/framework/ui/uimanager.cpp
index d92484ba..ec79d0f7 100644
--- a/src/framework/ui/uimanager.cpp
+++ b/src/framework/ui/uimanager.cpp
@@ -32,7 +32,7 @@ UIManager g_ui;
 void UIManager::init()
 {
     // creates root widget
-    m_rootWidget = UIWidget::create<UIWidget>();
+    m_rootWidget = UIWidgetPtr(new UIWidget);
     m_rootWidget->setId("root");
     m_mouseReceiver = m_rootWidget;
     m_keyboardReceiver = m_rootWidget;
diff --git a/src/framework/ui/uiverticallayout.cpp b/src/framework/ui/uiverticallayout.cpp
index 084e9752..3c9ee70f 100644
--- a/src/framework/ui/uiverticallayout.cpp
+++ b/src/framework/ui/uiverticallayout.cpp
@@ -119,4 +119,3 @@ void UIVerticalLayout::setFitParent(bool fitParent)
     m_fitParent = fitParent;
     update();
 }
-
diff --git a/src/framework/ui/uiverticallayout.h b/src/framework/ui/uiverticallayout.h
index a58020dd..028239e2 100644
--- a/src/framework/ui/uiverticallayout.h
+++ b/src/framework/ui/uiverticallayout.h
@@ -29,7 +29,6 @@ class UIVerticalLayout : public UILayout
 {
 public:
     UIVerticalLayout(UIWidgetPtr parentWidget);
-    static UIVerticalLayoutPtr create(UIWidgetPtr parentWidget) { return UIVerticalLayoutPtr(new UIVerticalLayout(parentWidget)); }
 
     virtual void applyStyle(const OTMLNodePtr& styleNode);
     virtual void update();
diff --git a/src/framework/ui/uiwidget.cpp b/src/framework/ui/uiwidget.cpp
index 7d784ed0..18473c8f 100644
--- a/src/framework/ui/uiwidget.cpp
+++ b/src/framework/ui/uiwidget.cpp
@@ -526,7 +526,7 @@ void UIWidget::addChild(const UIWidgetPtr& child)
 
     // create default layout
     if(!m_layout)
-        m_layout = UIAnchorLayout::create(asUIWidget());
+        m_layout = UIAnchorLayoutPtr(new UIAnchorLayout(asUIWidget()));
 
     // add to layout and updates it
     m_layout->addWidget(child);
@@ -559,7 +559,7 @@ void UIWidget::insertChild(int index, const UIWidgetPtr& child)
 
     // create default layout if needed
     if(!m_layout)
-        m_layout = UIAnchorLayout::create(asUIWidget());
+        m_layout = UIAnchorLayoutPtr(new UIAnchorLayout(asUIWidget()));
 
     // add to layout and updates it
     m_layout->addWidget(child);
@@ -829,7 +829,7 @@ void UIWidget::updateState(Fw::WidgetState state)
             do {
                 parent = widget->getParent();
                 if(!widget->isExplicitlyEnabled() ||
-                ((parent && parent->getFocusedChild() != widget))) {
+                   ((parent && parent->getFocusedChild() != widget))) {
                     newStatus = false;
                     break;
                 }
@@ -850,7 +850,7 @@ void UIWidget::updateState(Fw::WidgetState state)
             do {
                 parent = widget->getParent();
                 if(!widget->isExplicitlyEnabled() || !widget->isExplicitlyVisible() || !widget->containsPoint(mousePos) ||
-                (parent && widget != parent->getChildByPos(mousePos))) {
+                   (parent && widget != parent->getChildByPos(mousePos))) {
                     newStatus = false;
                     break;
                 }
@@ -1093,9 +1093,9 @@ void UIWidget::onStyleApply(const std::string& styleName, const OTMLNodePtr& sty
             if(!layoutType.empty()) {
                 UILayoutPtr layout;
                 if(layoutType == "verticalBox")
-                    layout = UIVerticalLayout::create(asUIWidget());
+                    layout = UIVerticalLayoutPtr(new UIVerticalLayout(asUIWidget()));
                 else if(layoutType == "anchor")
-                    layout = UIAnchorLayout::create(asUIWidget());
+                    layout = UIAnchorLayoutPtr(new UIAnchorLayout(asUIWidget()));
                 else
                     throw OTMLException(node, "cannot determine layout type");
                 setLayout(layout);
@@ -1158,6 +1158,7 @@ void UIWidget::onStyleApply(const std::string& styleName, const OTMLNodePtr& sty
     }
 
     if(m_firstOnStyle) {
+        callLuaField("onSetup");
         // always focus new child
         if(isFocusable() && isExplicitlyVisible() && isExplicitlyEnabled())
             focus();
diff --git a/src/framework/ui/uiwidget.h b/src/framework/ui/uiwidget.h
index 77c136a9..4178034a 100644
--- a/src/framework/ui/uiwidget.h
+++ b/src/framework/ui/uiwidget.h
@@ -35,9 +35,6 @@ public:
     UIWidget();
     virtual ~UIWidget() { }
 
-    template<class T>
-    static std::shared_ptr<T> create() { auto t = std::shared_ptr<T>(new T); return t; }
-
     void destroy();
 
 protected:
diff --git a/src/otclient/luafunctions.cpp b/src/otclient/luafunctions.cpp
index 460b71d9..fae18c97 100644
--- a/src/otclient/luafunctions.cpp
+++ b/src/otclient/luafunctions.cpp
@@ -1,3 +1,25 @@
+/*
+ * Copyright (c) 2010-2012 OTClient <https://github.com/edubart/otclient>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
 #include "otclient.h"
 #include <framework/luascript/luainterface.h>
 #include <otclient/luascript/luavaluecasts.h>
@@ -84,20 +106,20 @@ void OTClient::registerLuaFunctions()
     g_lua.bindClassStaticFunction<Game>("getFollowingCreature", std::bind(&Game::getFollowingCreature, &g_game));
 
     g_lua.registerClass<UIItem, UIWidget>();
-    g_lua.bindClassStaticFunction<UIItem>("create", &UIItem::create<UIItem>);
+    g_lua.bindClassStaticFunction<UIItem>("create", []{ return UIItemPtr(new UIItem); } );
     g_lua.bindClassMemberFunction<UIItem>("getItem", &UIItem::getItem);
     g_lua.bindClassMemberFunction<UIItem>("setItem", &UIItem::setItem);
 
     g_lua.registerClass<UICreature, UIWidget>();
-    g_lua.bindClassStaticFunction<UICreature>("create", &UICreature::create<UICreature>);
+    g_lua.bindClassStaticFunction<UICreature>("create", []{ return UICreaturePtr(new UICreature); } );
     g_lua.bindClassMemberFunction<UICreature>("getCreature", &UICreature::getCreature);
     g_lua.bindClassMemberFunction<UICreature>("setCreature", &UICreature::setCreature);
 
     g_lua.registerClass<UIMap, UIWidget>();
-    g_lua.bindClassStaticFunction<UIMap>("create", &UIWidget::create<UIMap>);
+    g_lua.bindClassStaticFunction<UIMap>("create", []{ return UIMapPtr(new UIMap); } );
 
     g_lua.registerClass<UIGame, UIWidget>();
-    g_lua.bindClassStaticFunction<UIGame>("create", &UIWidget::create<UIGame>);
+    g_lua.bindClassStaticFunction<UIGame>("create", []{ return UIGamePtr(new UIGame); } );
 
 #ifdef FORBIDDEN_FUNCTIONS
     g_lua.bindClassStaticFunction<Game>("talkChannel", std::bind(&Game::talkChannel, &g_game, _1, _2, _3));
diff --git a/src/otclient/ui/declarations.h b/src/otclient/ui/declarations.h
index d9dbba9c..9c2a3cd4 100644
--- a/src/otclient/ui/declarations.h
+++ b/src/otclient/ui/declarations.h
@@ -20,3 +20,20 @@
  * THE SOFTWARE.
  */
 
+#ifndef OTCLIENT_UI_DECLARATIONS_H
+#define OTCLIENT_UI_DECLARATIONS_H
+
+#include <otclient/global.h>
+#include <framework/ui/declarations.h>
+
+class UIItem;
+class UICreature;
+class UIMap;
+class UIGame;
+
+typedef std::shared_ptr<UIItem> UIItemPtr;
+typedef std::shared_ptr<UICreature> UICreaturePtr;
+typedef std::shared_ptr<UIMap> UIMapPtr;
+typedef std::shared_ptr<UIGame> UIGamePtr;
+
+#endif