Changes

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The dots are stored in a 13x13 array. Each dot has an attribute, 'type', that determines it status. The edges have a type=None. Occupied dots have a type=True. Unoccupied dots have a type=False.

The dots are stored in a 13✕13 array. Each dot has an attribute, 'type', that determines it status. The edges have a type=None. Occupied dots have a type=True. Unoccupied dots have a type=False.

Your strategy should start with:

Your strategy should start with:

There are some resources that you can use in your program, including:

There are some resources that you can use in your program, including:

;self._dots: the array of dots.

;self._dots: the array of dots from which you can test the type attribute (self._dots[i].type==None → edge; self._dots[i].type==False → open; self._dots[i].type==True → blocked)

;self._pressed: the index of the most recent dot pressed by the user

;self._orientation:you can set the orientation of your turtle by assigning a number from 0-5 (clockwise beginning with 30 degrees from north)

;self._orientation:you can set the orientation of your turtle by assigning a number from 0-5 (clockwise beginning with 30 degrees from north)

;self._set_label('your message here'):you can write a message on the toolbar if you want to communicate what your turtle is thinking

;self._set_label('your message here'):you can write a message on the toolbar if you want to communicate what your turtle is thinking

;self._grid_to_dot((column, row)): returns the dot that is at a grid position (column, row)

;self._grid_to_dot((column, row)): returns the dot that is at a grid position (column, row)

;self._dot_to_grid(dot): returns an array (column, row) representing the grid position of a dot

;self._dot_to_grid(dot): returns an array (column, row) representing the grid position of a dot

;CIRCLE: a 2x6x2 array of offsets that can used to find the column and row of the dots surrounding the turtle.

;CIRCLE: a 2✕6✕2 array of offsets that can used to find the column and row of the dots surrounding the turtle.

A bit more explanation about the CIRCLE constant:

A bit more explanation about the CIRCLE constant: