program.gvr
Speed
Format: Robot INT INT DIRECTION INT (x y dir beepers)
Wall INT INT DIRECTION · Beepers INT INT INT (x y count)
move
turnleft
pickbeeper
putbeeper
turnoff
define <new_name>:
<block>
if <test>:
<block>
elif <test>:
<block>
else:
<block>
elif and else branches are optional. Multiple elif branches allowed.
do <positive_number>:
<block>
while <test>:
<block>
Wall Tests
front_is_clear
front_is_blocked
left_is_clear
left_is_blocked
right_is_clear
right_is_blocked
Beeper Tests
next_to_a_beeper
not_next_to_a_beeper
any_beepers_in_beeper_bag
no_beepers_in_beeper_bag
Compass Tests
facing_north
not_facing_north
facing_south
not_facing_south
facing_east
not_facing_east
facing_west
not_facing_west
define turnright:
do 3:
turnleft
define follow_right_wall:
if right_is_clear:
turnright
move
elif front_is_clear:
move
else:
turnleft
while not_next_to_a_beeper:
follow_right_wall
turnoff
Every program must end with turnoff. Names are case-sensitive. Indentation defines blocks.