Fix #162: Center ingame mouse cursor after login

--HG--
branch : sdl2

code/nel/include/nel/gui/view_pointer_base.h

@@ -59,6 +59,8 @@ namespace NLGUI
 		/// get buttons state
 		NLMISC::TMouseButton getButtonState() const { return _Buttons; }
 
+		static const sint32 InvalidCoord = 0x80000000;
+
 	protected:
 		// (x,y) is from the TopLeft corner of the window
 		sint32		_PointerX;				// Current pointer position (raw, before snapping)

code/nel/src/gui/view_pointer_base.cpp

@@ -25,7 +25,7 @@ namespace NLGUI
 	CViewBase( param ),
 	_Buttons( NLMISC::noButton )
 	{
-		_PointerX = _PointerY = _PointerOldX = _PointerOldY = _PointerDownX = _PointerDownY = 0;
+		_PointerX = _PointerY = _PointerOldX = _PointerOldY = _PointerDownX = _PointerDownY = InvalidCoord;
 		_PointerDown = false;
 		_PointerVisible = true;
 	}

code/ryzom/client/src/input.cpp

@@ -169,8 +169,6 @@ bool IsMouseFreeLook()
 	return MouseFreeLook;
 }
 
-bool MouseCursorNoZero = true;
-
 // *********************************************************************************
 // Use this method to toggle the mouse (freelook -> cursor)
 void	SetMouseCursor (bool updatePos)
@@ -194,7 +192,7 @@ void	SetMouseCursor (bool updatePos)
 			{
 				sint32 ix, iy;
 				cursor->getPointerPos (ix, iy);
-				if (!MouseCursorNoZero || (ix != 0 || iy != 0))
+				if (ix != CViewPointer::InvalidCoord && iy != CViewPointer::InvalidCoord)
 				{
 					x = (float)ix / (float)width;
 					y = (float)iy / (float)height;