IN JAVA In this project you will create a robot class. The robot objects move wi

ID: 3852631 • Letter: I

Question

IN JAVA

In this project you will create a robot class. The robot objects move within a grid similar.to the 3x3 grid shown below to pick up and carry the letters on the grid to different locations. The grid size should be declared as constants, use a 25X25 grid for our program. const int RIGHTBOUNDARY-26; const int LEFTBOUNDARY-0; sonst int TOPBOUNDARY-26; const int BOTTOMBOUNDARY 0; The Robot class must have the following data members and methods: a) The Robot class has three private data members a. b. c. An integer type variable for the x component of the location of the robot on the grid An integer type variable for the y component of the location of the robot on the grid A char type variable "payload" to hold letters as load b) The Robot class must have the following public member functions a. A default constructor places the robot at location (0,0) and payload to character

Explanation / Answer

Here is the complete code with output. Please post a comment in case of any issues, I shall respond. Please don't forget to rate the answer if it helped. Thank you very much.

Constants.java

public interface Constants {

public static final int RIGHTBOUNDARY = 26;

public static final int LEFTBOUNDARY = 0;

public static final int TOPBOUNDARY = 26;

public static final int BOTTOMBOUNDARY = 0;

}

Robot.java

public class Robot {

private int x;

private int y;

private char payload;

private char grid[][];

public Robot() {

x = 0;

y = 0;

payload = ' ';

}

public Robot(int x, int y, char payload) {

this.x = x;

this.y = y;

this.payload = payload;

}

public void setGrid(char grid[][])

{

this.grid = grid;

}

public int getX() {

return x;

}

public void setX(int x) {

this.x = x;

}

public int getY() {

return y;

}

public void setY(int y) {

this.y = y;

}

public char getPayload() {

return payload;

}

public void setPayload(char payload) {

this.payload = payload;

}

public void print() {

System.out.println("X: " + x + " Y: " + y + " Payload: " + payload + " ");

}

public boolean pickup(int lx, int ly) {

if(lx != x && ly != y) {

System.out.println("Not at (" + lx + "," + ly + ")");

return false;

}

char locationPayload = grid[lx][ly];

if(locationPayload == ' ') {

System.out.println("No load at this location");

return false;

} else {

if(payload == ' ') {

payload = locationPayload;

grid[lx][ly] = ' ';

return true;

}

return false;

}

public boolean dropOff(int lx, int ly) {

if(lx != x && ly != y) {

System.out.println("Not at (" + lx + "," + ly + ")");

return false;

}

if(payload != ' ') {

grid[lx][ly] = payload;

payload = ' ';

return true;

}

return false;

}

public void moveRight() {

if(x < Constants.RIGHTBOUNDARY)

x++;

if( x == Constants.RIGHTBOUNDARY)

System.out.println("Right boundary reached");

}

public void moveLeft() {

if( x > Constants.LEFTBOUNDARY)

x--;

if(x == Constants.LEFTBOUNDARY)

System.out.println("Left boundary reached");

}

public void moveUp() {

if( y < Constants.TOPBOUNDARY)

y++;

if(y == Constants.TOPBOUNDARY)

System.out.println("Top boundary reached");

}

public void moveDown() {

if( y > Constants.BOTTOMBOUNDARY)

y--;

if(y == Constants.BOTTOMBOUNDARY)

System.out.println("Bottom boundary reached");

}

public boolean moveTo(int lx, int ly) {

if(lx >= Constants.LEFTBOUNDARY && lx <= Constants.RIGHTBOUNDARY && //check if within boundaries

ly >= Constants.BOTTOMBOUNDARY && ly <= Constants.TOPBOUNDARY) {

while(x > lx)

moveLeft();

while(x < lx)

moveRight();

while(y > ly)

moveDown();

while(y < ly)

moveUp();

return true;

} else {

System.out.println("Can't moveTo (" + lx + "," + ly +") , out of boundary.");

return false;

}

TestRobot.java

public class TestRobot {

public static void print2D(char grid[][]) {

System.out.println("Displaying Grid ");

for(int row=Constants.TOPBOUNDARY - 1; row > Constants.BOTTOMBOUNDARY; row--)

{

System.out.println(" ");

for(int col= Constants.LEFTBOUNDARY + 1; col< Constants.RIGHTBOUNDARY; col++)

{

if(grid[row][col] == ' ')

System.out.print("---|");

else

System.out.print("-" + grid[row][col] + "-|");

}

System.out.println(" ");

}

public static void clear(char grid[][])

{

System.out.println("Clearing Grid ");

for(int row = Constants.TOPBOUNDARY -1 ; row > Constants.BOTTOMBOUNDARY; row--)

{

for(int col= Constants.LEFTBOUNDARY ; col< Constants.RIGHTBOUNDARY; col++)

{

if(grid[row][col] != ' ')

{

Robot r = new Robot(); //create a robot here

r.setGrid(grid);

r.moveTo(row, col);

r.pickup(row, col);

//after this line, the Robot object r is out of scope and gets deleted

}

System.out.println(" ");

}

private static void initialize(char grid[][])

{

for(int row=Constants.TOPBOUNDARY-1; row >= Constants.BOTTOMBOUNDARY; row--)

{

for(int col= Constants.LEFTBOUNDARY ; col< Constants.RIGHTBOUNDARY; col++)

{

grid[row][col] = ' ';

}

public static void main(String[] args) {

char grid[][] = new char[26][26];

initialize(grid);

//place 'B' and 'C' on grid

grid[10][8] = 'B';

grid[22][4] = 'C';

print2D(grid);

Robot r1 = new Robot();

Robot r2 = new Robot(0, 0 , ' ');

//set robots to use the grid

r1.setGrid(grid);

r2.setGrid(grid);

System.out.println("Printing location of R1: ");

r1.print();

System.out.println("Printing location of R2: ");

r2.print();

System.out.println("Moving R1 to (25,26) and R2 to (15,3)");

r1.moveTo(25, 26);

r2.moveTo(15, 3);

System.out.println("Printing location of R1: ");

r1.print();

System.out.println("Printing location of R2: ");

r2.print();

System.out.println("direct R1 to pickup B at 10,8 and drop at 20,20");

r1.moveTo(10, 8);

r1.pickup(10, 8);

System.out.println("Printing location of R1: ");

r1.print();

r1.moveTo(20, 20);

r1.dropOff(20, 20);

System.out.println("Printing location of R1: ");

r1.print();

print2D(grid);

System.out.println("direct R2 to pickup C at 22,4 and drop at 0,0");

r2.moveTo(22, 4);

r2.pickup(22, 4);

System.out.println("Printing location of R2: ");

r2.print();

r2.moveTo(0, 0);

r2.dropOff(0, 0);

System.out.println("Printing location of R2: ");

r2.print();

print2D(grid);

clear(grid);

print2D(grid);

}

output

Displaying Grid

---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|

---|---|---|-C-|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|

---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|

---|---|---|---|---|---|---|-B-|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|

---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|

Printing location of R1:

X: 0 Y: 0 Payload:

Printing location of R2:

X: 0 Y: 0 Payload:

Moving R1 to (25,26) and R2 to (15,3)

Top boundary reached

Printing location of R1:

X: 25 Y: 26 Payload:

Printing location of R2:

X: 15 Y: 3 Payload:

direct R1 to pickup B at 10,8 and drop at 20,20

Printing location of R1:

X: 10 Y: 8 Payload: B

Printing location of R1:

X: 20 Y: 20 Payload:

Displaying Grid

---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|

---|---|---|-C-|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|

---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|

---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|-B-|---|---|---|---|---|

---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|

direct R2 to pickup C at 22,4 and drop at 0,0

Printing location of R2:

X: 22 Y: 4 Payload: C

Left boundary reached

Bottom boundary reached

Printing location of R2:

X: 0 Y: 0 Payload:

Displaying Grid

---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|

---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|-B-|---|---|---|---|---|

---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|

Clearing Grid

Displaying Grid

---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|

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