[motherhamster] SVN: james/269 Correct GridScreenIterator to itrate correctly even when the screen/box

[subversion at HamsterRepublic.com]

james
2007-05-11 02:39:36 +0800 (Fri, 11 May 2007)
185
Correct GridScreenIterator to itrate correctly even when the screen/box extends outside the grid.
Added a SolidVoidTile class for when you want the edges of the map to be impenetrable.
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U   sidescroller/dirt.py
U   sidescroller/movement.py
U   sidescroller/sidescroller.py