[Kde-games-devel] [PATCH] knetwalk rotation reduction

[Ben Longbons]

The attached patch is also at:
http://paste.kde.org/453626/
with a timeout of one month.

This knetwalk patch keeps track of the last cell edited and how it
changed, so that suboptimal click sequences are not penalized.

* Left click + right click is equivalent to no click (useful if your
middle mouse button by simultaneously clicking the other two and you
hit them at different times)
* 3 clicks is equivalent to a click in the opposite direction.
* Special handling is applied for straight pipes -  any 2 clicks is
equivalent to no click

Note that this is *not* general undo support, just mistake prevention
and convenience for the single most recent cell.

-Ben
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