restore some game functionallity

* i'm gradually restoring game functionality with the new modules design, though still a lot to do
* you can reload all scripts and modules using Ctrl+R shortcut while playing (finally! this is the reason of all this rework)
* a bunch of fixes, but new regression too :P
* fix performance issue that could lead freezes in the client in older machines
* completely new game module with new design
* fix crashs in map render
* remove uigame.cpp (now every game input is via lua)
* enable DEBUG macro by default, with it you are able to view any possible lua leak while running

modules/game/widgets/uigamemap.lua

@@ -0,0 +1,64 @@
+UIGameMap = extends(UIMap)
+
+function UIGameMap.create()
+  local gameMap = UIGameMap.internalCreate()
+  return gameMap
+end
+
+
+function UIGameMap:onDragEnter(mousePos)
+  local tile = self:getTile(mousePos)
+  if not tile then return false end
+
+  local thing = tile:getTopMoveThing()
+  if not thing then return false end
+
+  self.parsed = false
+  self.currentDragThing = thing
+  Mouse.setTargetCursor()
+  return true
+end
+
+function UIGameMap:onDragLeave(droppedWidget, mousePos)
+  if not self.parsed then
+    self.currentDragThing = nil
+  end
+
+  Mouse.restoreCursor()
+  return true
+end
+
+function UIGameMap:onDrop(widget, mousePos)
+  if not widget or not widget.currentDragThing then return false end
+
+  local tile = self:getTile(mousePos)
+  if not tile then return false end
+
+  local count = widget.currentDragThing:getCount()
+  if widget.currentDragThing:isStackable() and count > 1 then
+    widget.parsed = true
+    local moveWindow = createWidget('CountWindow', rootWidget)
+    local spinbox = moveWindow:getChildById('spinbox')
+    spinbox:setMaximum(count)
+    spinbox:setMinimum(1)
+    spinbox:setCurrentIndex(count)
+
+    local okButton = moveWindow:getChildById('buttonOk')
+    okButton.onClick = function()
+      g_game.move(widget.currentDragThing, tile:getPosition(), spinbox:getCurrentIndex())
+      okButton:getParent():destroy()
+      widget.currentDragThing = nil
+    end
+    moveWindow.onEnter = okButton.onClick
+  else
+    g_game.move(widget.currentDragThing, tile:getPosition(), 1)
+  end
+
+  return true
+end
+
+function UIGameMap:onMouseRelease(mousePosition, mouseButton)
+  local tile = self:getTile(mousePosition)
+  if tile and GameInterface.processMouseAction(mousePosition, mouseButton, nil, tile:getTopLookThing(), tile:getTopUseThing(), tile:getTopCreature(), tile:getTopMultiUseThing()) then return true end
+  return false
+end