Scenario A robot is sitting in a chair with its arms facing

Scenario: A robot is sitting in a chair with its arms facing down. Write an algorithm, using pseudocode, to make the robot:

stand up

walk until it senses a wall

turn around

walk back to the chair

sit back down in the origin starting position

Finally, output the total number of steps taken.

Commands:

In addition to our standard pseudocode commands, you must also use the following robot control commands:

sit

stand

step (one step forward)

raise arms (parallel to floor)

lower arms (pointing to floor)

sense (only if arms are raised)

turn (90 degrees right)

Immediately after issuing a sense command, you can check whether the robot is at the wall as follows:

if at wall or alternatively if not at wall

You should use comments, sequence, comparison, iterative instructions in this project.

Assumptions
You must assume the following facts:

The robot\'s initial sitting position is directly facing the target wall.

There are no obstacles between the robot and the wall.

The wall is 1 or more exact steps from the chair.

The wall is sensed when it is less than 1 step from the robot\'s arms.

The length of the robot\'s arms are slightly less than the length of 1 step.

Your solution
Your solution must include all of the following:

Adequate comments

Initialization and use of at least one variable

Sequential flow of control

Conditional flow of control

Iterative flow of control

Handling of any special cases

Output of the total number of steps taken

Solution

Algorithm:

METHOD moveRobot
IF robot has no obstacle in front THEN
stand up
ENDIF
WHILE robot is touching something is not true
take one foot step
ENDWHILE
FOR twenty times
take one foot step
ENDFOR
WHILE robot is touching is true
stop
ENDWHILE
IF robot has touched chair in front THEN
turn left 90 degrees
ENDIF
IF robot has traveled twenty feet THEN
sit down
ENDIF
ENDMETHOD