diff -r 7e8d4cd76ce7 -r a90a55ec5b98 hedgewars/uVariables.pas
--- a/hedgewars/uVariables.pas	Tue Jun 10 08:19:59 2014 +0200
+++ b/hedgewars/uVariables.pas	Tue Jun 10 08:47:03 2014 +0200
@@ -211,6 +211,9 @@
     WorldDx: LongInt;
     WorldDy: LongInt;
 
+    // for tracking the limits of the visible grid based on cScaleFactor
+    ViewLeftX, ViewRightX, ViewBottomY, ViewTopY: LongInt;
+
     hiTicks: Word;
 
     LuaGoals        : shortstring;