gistfile1.cpp

-the lab practice should be submitted to bb 
-This program draws a spacecraft that can travel and an array of fixed asteroids. 

-include the following header files:
#include <cmath>
#include <iostream>
 #include <string>
#include<conio.h>
#include <Windows.h>
if adding windows.h makes your program not compile use vs2013. 


-Import the std namespace

-define a global integer constant called astroids_num to store the number of astroids.

-define two global float variables xVal and yVal to store the coordinates of the spacecraft. 

-define two global integer arrays arrayAsteroidsX,arrayAsteroidsY each having astroids_num elements to store the coordinates of the asteroids. 

-write a void method called setup() that initializes arrayAsteroidsX with random variable between 1 and 40 and initializes arrayAsteroidsY with random numbers between 1 and 20.

-copy the following definition for the function gotoxy(...) if you're on Windows:
void gotoxy( int x, int y )
{
    COORD p = { x, 100-y };
    SetConsoleCursorPosition( GetStdHandle( STD_OUTPUT_HANDLE ), p );
}
this code needs windows.h 

-write a method void drawScene(char ch) that prints each astroid using the following 2 statements:   
gotoxy(arrayAsteroidsX[j]-xVal, arrayAsteroidsY[j]-yVal);   
cout << ch;  

- you need a for loop that goes over all asteroids and uses the variable asteroids_num as the upper bound.
 
- test your program using the following main method:

void main()
{
	setup(); 
	drawScene('o'); 
}

-add a keyboard input processing function called:
void keyInputf(unsigned char key):
	    switch(key)
        {
        case 'W':
        case 'w':
			yVal++; 
            break;
			
		case 27:
			exit(0);
			break;
		default:
			break;
		}
}

-the idea is to use the wasd keys to control  the navigation. I left the code for the asd keys to you. 
include the following header file:
#include<conio.h>


-change the main method to the following:
void main()
{
	char ch=0;
	setup(); 
    do
    {
		drawScene('o'); 
		gotoxy(20, 10 );
		cout << "+";
        ch = _getch(); 
		 drawScene(' '); 
		keyInputf(ch); 

    }while (ch != 'Q' && ch!='q');
}