ECE
2036 Spring 2015
Lab
1: Robot Motion
Assigned:
January 12, 2015 Section B: Due January 22, 2015
Section A: Due
January 23, 2015
In this lab we will be creating a C++ class, and an
object of that class. Classes can be used
to represent anything: cars, gradebooks, students, professors, or in this case,
robots.
You will help create the class Robot. Your
class will have two private data members: xPosition and yPosition. Your class will also have several public
member functions for manipulating objects of the class: setXPosition(int), setYPosition(int), getXPosition(), getYPosition(), moveForward(int), moveLeft(int), moveRight(int), moveBackward(int), inputMove() and displayPosition(). In addition, your class will have a constructor
which initializes xPosition and yPosition to
zero.
In the main()
function of the code, you should create one instantiation (object) of Robot, with object name myRobot. The code should prompt
the user to input the next move of the robot, using F, B, L, and R to represent
forward, backward, left, and right respectively, and an integer to represent
the distance moved. For example,
entering F 3
would cause the robot to move forward 3 units.
This should appear on the screen as:
Please enter the direction the
robot should move (F, B, L, or R), followed by the integer distance: F 3
Robot is moving forward 3 units
The robot never turns, so F, B, L, and R are fixed directions at all times. Assume forward and backward refer to moves on
the y-axis, while right and left refer to moves on the x-axis. After each move, your code must update the
position of the robot and print it to the screen. It must output this result to the screen as:
Robot is located at x = 0, y =
3
the
code then loops back to prompt the next move.
Detailed
Lab Programming Requirements
Your code must include the following:
1. A
constructor for class Robot
with no arguments. The constructor must
initialize the values of xPosition and yPosition to zero.
2. setXPosition(int), setYPosition(int), getXPosition(), getYPosition(): Member
functions of class Robot
to set and get the values of xPosition
and yPosition.
3. moveForward(int), moveBackward(int), moveLeft(int), moveRight(int): Member functions of
class Robot to move the
robot forward, backward, left, or right by an integer number of units, by
calling setXPosition and setYPosition to update the robots
position.
4. inputMove():
A
member function of class Robot
to prompt the user for the next move of the robot, and call the move functions
accordingly.
5. displayPosition():
A
member function of class Robot
to call getXPosition() and getYPosition() and display the x and
y position of the robot on the screen.
6. In the main() function, the code must instantiate an object of class Robot, and display the starting position
on the screen. The main() function must then start an infinite
loop. Inside the loop, main() must first call a member function
of Robot in order to prompt
the user to input the next move of the robot and execute that move. The main()
function
must then call a member functions of Robot
in order to display the robots new position, and then go back to the start of
the loop.
You must use the skeleton code given to you in class
as the basis for your code. As part of
this lab, it is your responsibility to manually type in this skeleton
code. Do not copy this from another
source! There are various places in the
code where the comments indicate an intentionally placed syntax error or
missing code. You should correct the
errors so indicated, and insert more code where indicated in order to flesh
out the skeleton and obtain the functionality delineated above. Modify and
complete the skeleton code only as indicated in the skeleton code comments.
As shown in the skeleton code, you will include
implementations of the member functions outside the class definition. However, your entire code can be contained in
a single file. (In the future,
implementations will generally be contained in separate files.)
Sample
output from completed code
Robot is located at x = 0, y =
0
Please enter the direction the
robot should move (F, B, L, or R),
followed by the integer distance: F 3
Robot is moving forward 3 units
Robot is located at x = 0, y =
3
Please enter the direction the
robot should move (F, B, L, or R),
followed by the integer distance: R 10
Robot is moving right 10 units
Robot is located at x = 10, y =
3
Please enter the direction the
robot should move (F, B, L, or R),
followed by the integer distance: L 6
Robot is moving left 6 units
Robot is located at x = 4, y =
3
Please enter the direction the
robot should move (F, B, L, or R),
followed by the integer distance: B 1
Robot is moving backward 1 units
Robot is located at x = 4, y =
2