APtran Robot

Simulator for the virtual robot they use on the AP exam.

Set GRID SIZE slider then click green flag to make a new grid.  The turtle shape represents the robot.  There are four kinds of squares:

WHITE: available to move into.
BLACK: a wall, can't be moved into or through.
GREEN: a goal; you win if the robot reaches it.
WHITE WITH (tip of) TURTLE: the location of the robot.  The direction shows the direction of motion.

Clicking in a white square makes it black (a wall), unless you first push one of these buttons:

NEXT CLICK SETS GOAL button means that you want the next white-square click to turn that square green (a goal square).

NEXT CLICK SETS ROBOT button means that you want the next white-square click to put the robot (the turtle) there.  If you push this button repeatedly before pushing a grid square, it changes the initial direction of the robot.

The RESET button puts the robot back in its original position and direction.