Question

IN PSEUDOCODE and C++

Program 1: Stay on the Screen! Animation in video games is just like animation in movies – it’s drawn image by image (called “frames”). Before the game can draw a frame, it needs to update the position of the objects based on their velocities (among other things). To do that is relatively simple: add the velocity to the position of the object each frame.

For this program, imagine we want to track an object and detect if it goes off the left or right side of the screen (that is, it’s X position is less than 0 and greater than the width of the screen, say, 100). Write a program that asks the user for the starting X and Y position of the object as well as the starting X and Y velocity, then prints out its position each frame until the object moves off of the screen. Design (pseudocode) and implement (source code) for this program.

Sample run 1:

Enter the starting X position: 50

Enter the starting Y position: 50

Enter the starting X velocity: 4.7

Enter the starting Y velocity: 2

X:50    Y:50

X:54.7 Y:52

X:59.4 Y:54

X:64.1 Y:56

X:68.8 Y:58

X:73.5 Y:60

X:78.2 Y:62

X:82.9 Y:64

X:87.6 Y:66

X:92.3 Y:68

X:97    Y:70

X:101.7 Y:72

Sample run 2:

Enter the starting X position: 20

Enter the starting Y position: 45

Enter the starting X velocity: -3.7

Enter the starting Y velocity: 11.2

X:20    Y:45

X:16.3 Y:56.2

X:12.6 Y:67.4

X:8.9   Y:78.6

X:5.2   Y:89.8

X:1.5   Y:101

X:-2.2 Y:112.2

Answer 1

Here is the completed code for this problem. Pseudocode is provided as comments before every statement. 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. Thanks

#include<iostream>

using namespace std;

int main(){

                //declaring minimum and maximum values for X

                int MIN_X=0, MAX_X=100;

                //declaring x, y, x velocity, y velocity

                double x, y, x_vel, y_vel;

               

                //prompting and reading starting x

                cout<<"Enter the starting X position: ";

                cin>>x;

                //prompting and reading starting y

                cout<<"Enter the starting Y position: ";

                cin>>y;

                //prompting and reading x velocity

                cout<<"Enter the starting X velocity: ";

                cin>>x_vel;

                //prompting and reading y velocity

                cout<<"Enter the starting Y velocity: ";

                cin>>y_vel;

               

                //printing x and y

                cout<<"X:"<<x<<"\tY:"<<y<<endl;

                //looping as long as x>=MIN_X and x<=MAX_X

                while(x>=MIN_X && x<=MAX_X){

                                //adding x_vel to x

                                x+=x_vel;

                                //adding y_vel to y

                                y+=y_vel;

                                //displaying x and y

                                cout<<"X:"<<x<<"\tY:"<<y<<endl;

                }

                return 0;

}

/*OUTPUT*/

Enter the starting X position: 20

Enter the starting Y position: 45

Enter the starting X velocity: -3.7

Enter the starting Y velocity: 11.2

X:20    Y:45

X:16.3 Y:56.2

X:12.6 Y:67.4

X:8.9   Y:78.6

X:5.2   Y:89.8

X:1.5   Y:101

X:-2.2 Y:112.2