Robots can now collide with each other!
Renamed the drawing offset to something more sensical.
A freeze-frame is now in effect!  When the player enters planning mode, a deep copy of the robots is made.  The copy does not get updated, but instead is drawn while the player is in planning mode.  When the player leaves planning mode, the copy gets deleted, but the real array will have been kept updated, giving the illusion that actions took place while the user was planning.
Moved the individual sprites into sprite sheets.  Also deleted person1.png, which somehow snuck back into the project. >_>
Added idle animation code.