Modified sprite and path code to make use of these timestamps to determine
a sprite's progress along the path. Abstracted the path stuff so that
paths other than line segment paths can be cleanly implemented.
git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@337 542714f4-19e9-0310-aa3c-eee0fc999fb1
members protected and provided accessors. Added toString() to Path.
git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@300 542714f4-19e9-0310-aa3c-eee0fc999fb1
conversion routines for fine and full coordinates, and moved
iso-related utility functions to IsoUtil.
git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@167 542714f4-19e9-0310-aa3c-eee0fc999fb1