Question

Need in C# with pseudocode comments please!

A Ball has an X and Y position. Equally important, a ball has an x velocity and a y velocity. Every time the ball moves (in one unit of time), it changes its X and Y position by its x and y velocity. However, before moving it, you need to check to see if it’s touching a wall. If so, you need to reverse either its x or y velocity depending on whether or not its touching a wall. What is the ball’s location if its touching a wall? For simplicity, we’re going to assume that the ball is on a 10x10 field and that the x and y velocities can only be -1, 0, or +1.


Your task is to 1) write class Ball that has the variables/attributes above, 2) has a constructor that takes in the starting X and Y position as well as the starting X and Y velocity, 3) has a method called “move” that takes no parameters and updates the position of the ball and 4) has a print statement called “print” that takes no parameters and prints out the ball’s current position.

You must call the class “Ball” and put it in a file called Ball(.java, .cs, .cpp, .h). To test your ball, you should create a file called Assignment6A(.java, .cs, .cpp) that creates a ball based off of user input and calls the “move” and “print” methods of the ball the number of times the user wants. It should behave like the sample output below.

Sample Output #1:

x:

7

y:

4

x velocity:

1

y velocity:

1

Number of moves:

20

X:7 Y:4

X:8 Y:5

X:9 Y:6

X:8 Y:7

X:7 Y:8

X:6 Y:9

X:5 Y:8

X:4 Y:7

X:3 Y:6

X:2 Y:5

X:1 Y:4

X:0 Y:3

X:1 Y:2

X:2 Y:1

X:3 Y:0

X:4 Y:1

X:5 Y:2

X:6 Y:3

X:7 Y:4

X:8 Y:5

X:9 Y:6

Answer 1

Here is the completed code for this problem. Comments are included, go through it, learn how things work and let me know if you have any doubts or if you need anything to change. If you are satisfied with the solution, please rate the answer. If not, PLEASE let me know before you rate, I’ll help you fix whatever issues. Thanks

//Ball.cs file

using System;

class Ball{
    //attributes
    private int x;
    private int y;
    private int x_vel;
    private int y_vel;
    
    //static variables indicating field size
    private static int MAX_X=10;
    private static int MAX_Y=10;
    
    //constructor taking all values
    public Ball(int X, int Y, int xvel, int yvel){
        x=X;
        y=Y;
        x_vel=xvel;
        y_vel=yvel;
    }
    
    //method to move the ball
    public void move(){
        //if x is at the edge, reversing x_vel
        if(x==MAX_X-1 || x==0){
            x_vel=-x_vel;
        }
        //adding x_vel to x
        x=x+x_vel;
        
        //repeating the same for y
        if(y==MAX_Y-1 || y==0){
            y_vel=-y_vel;
        }
        y=y+y_vel;    
    }
    
    //method to print current coordinates of the Ball
    public void print(){
        Console.WriteLine("X:"+x+" Y:"+y);
    }
}

//Assignment6A.cs file

using System;


class Assignment6A{
    
    
    public static void Main(string[] args)
    {
        //asking and reading each required input. assuming all inputs are valid
        Console.WriteLine("x:");
        int x=int.Parse(Console.ReadLine());
        
        Console.WriteLine("y:");
        int y=int.Parse(Console.ReadLine());
        
        Console.WriteLine("x velocity:");
        int xvel=int.Parse(Console.ReadLine());
        
        Console.WriteLine("y velocity:");
        int yvel=int.Parse(Console.ReadLine());
        
        Console.WriteLine("Number of moves:");
        int n=int.Parse(Console.ReadLine());
        
        //creating a Ball and printing initial position
        Ball b=new Ball(x,y,xvel,yvel);
        b.print();
        
        //looping for n times
        for(int i=0;i<n;i++){
            //moving and printing new position
            b.move();
            b.print();
        }
        
        //wait for user input to quit, remove if you don't need this
        Console.Write("\n\nPress any key to continue . . . ");
        Console.ReadKey(true);
    }
}

/*OUTPUT*/

x:

7

y:

4

x velocity:

1

y velocity:

1

Number of moves:

20

X:7 Y:4

X:8 Y:5

X:9 Y:6

X:8 Y:7

X:7 Y:8

X:6 Y:9

X:5 Y:8

X:4 Y:7

X:3 Y:6

X:2 Y:5

X:1 Y:4

X:0 Y:3

X:1 Y:2

X:2 Y:1

X:3 Y:0

X:4 Y:1

X:5 Y:2

X:6 Y:3

X:7 Y:4

X:8 Y:5

X:9 Y:6

Press any key to continue . . .