Question

Please do in Java!!

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 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

Answer 1

CursorPosition.java :

//import package
import java.util.*;
//java class
public class CursorPosition {
//main method
   public static void main(String[] args) {
       // creating object of Scanner class
       Scanner input = new Scanner(System.in);
       // asking user starting X position
       System.out.print("Enter the starting X position: ");
       double XX = input.nextDouble();// reading X position
       // asking user starting Y position
       System.out.print("Enter the starting Y position: ");
       double YY = input.nextDouble();// reading y position
       // asking user starting X velocity
       System.out.print("Enter the starting X velocity: ");
       double xVelocity = input.nextDouble();// reading X velocity
       // asking user starting Y velocity
       System.out.print("Enter the starting Y velocity: ");
       double yVelocity = input.nextDouble();// reading Y velocity
       //this loop will executes till value of X becomes less then 0 or
       //greater than 100 using while loop
       while (XX > 0 && XX <= 100) {
           System.out.printf("X:%.1f",XX);//printing X position
           System.out.print(" ");// used for space
           System.out.printf("Y:%.1f", YY);
           System.out.println();// used for new line
           //increment position by adding velocity
           XX = XX + xVelocity;
           // increment position by adding velocity
           YY = YY + yVelocity;
       }
       System.out.printf("X:%.1f", XX);//print position of X
       System.out.print(" ");// used for space
       System.out.printf("Y:%.1f", YY);//print position of Y

   }

}
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Screen 1:CursorPosition.java