maux_robot¶ ↑
Maux version of a Toy Robot Simulator in Ruby
Description¶ ↑
-
The application is a simulation of a toy robot moving on a square tabletop, of dimensions 5 units x 5 units.
-
There are no other obstructions on the table surface.
-
The robot is free to roam around the surface of the table, but must be prevented from falling to destruction. Any movement that would result in the robot falling from the table must be prevented, however further valid movement commands must still be allowed.
Task¶ ↑
This is an application that can read in commands of the following form:
PLACE X,Y,F MOVE LEFT RIGHT REPORT [csv|json] VERBOSE
-
PLACE
will put the toy robot on the table in position X,Y and facingNORTH
,SOUTH
,EAST
orWEST
. -
The origin (0,0) can be considered to be the
SOUTH WEST
most corner. -
The first valid command to the robot is a
PLACE
command, after that, any sequence of commands may be issued, in any order, including anotherPLACE
command. The application should discard all commands in the sequence until a validPLACE
command has been executed. -
MOVE
will move the toy robot one unit forward in the direction it is currently facing. -
LEFT
andRIGHT
will rotate the robot 90 degrees in the specified direction without changing the position of the robot. -
REPORT
will announce the X,Y and F of the robot. Ifcsv
orjson
is passed, it formats the whereabouts accordingly. The default format iscsv
. -
VERBOSE
will turn the error messages (talkative mode) on or off. The robot starts with talkative mode set to off. -
A robot that is not on the table ignores the
MOVE
,LEFT
,RIGHT
andREPORT
commands.
Constraints¶ ↑
The toy robot does not fall off the table during movement. This also includes the initial placement of the toy robot. Any move that would cause the robot to fall is ignored.
Installation¶ ↑
gem install maux_robot
Execution¶ ↑
Example Input and Output:
# Example a echo "PLACE 0,0,NORTH MOVE REPORT" | maux_robot # Output: 0,1,NORTH
# Example b echo "PLACE 0,0,NORTH LEFT REPORT" | maux_robot # Output: 0,0,WEST
# Example c echo "PLACE 1,2,EAST MOVE MOVE LEFT MOVE REPORT" | maux_robot # Output: 3,3,NORTH
# Example d cat script_file | maux_robot
Acknowledgement¶ ↑
The Toy Robot Challenge was originally formulated by Jon Eaves
Author¶ ↑
Mauricio Vieira (mauriciovieira) + mauriciovieira.net + twitter.com/mauriciovieira + github.com/mauriciovieira