//*********************************************************
// Projectile.cpp
//
// This program allows the user to play a game in which
// (s)he tries to find the correct combination of initial
// velocity and angle so that a projectile will travel a
// given distance (entered by the user).
//
// D. Searls
// Asbury College
// Aug 2003
//*********************************************************

#include <iostream>
#include <cmath>
using namespace std;

const double PI = 3.14159265358979;
const double G = 32.2;
const double PERCENT_ERR = 1.0; // Error tolerance in percent

double projectileDistance(double velocity, double angle);
bool isCorrectDistance(double calculatedDist, double desiredDist);

int main()
{
    double desiredDist;
    double velocity;
    double angle;       // in degrees
    double calcDist;

    char userResponse;

    int numTries;
    bool solutionFound;

    // Display the instructions

    cout << "             HORIZONTAL DISTANCE TRAVELED BY A PROJECTILE\n\n";
    cout << "In this game, you will enter the horizontal distance that a projectile\n";
    cout << "should travel. You will then be given up to five chances to enter the\n";
    cout << "correct combination of the initial velocity and the angle (above the\n";
    cout << "horizontal) at which the projectile should be launched. If you get the\n";
    cout << "correct combination within five tries then you win the game.\n\n";

    cout << "Do you want to play (Y or N)? ";
    cin >> userResponse;

    while (toupper(userResponse) == 'Y')
    {

        // The code to play the game goes here

        cout << "Do you want to play again (Y or N)? ";
        cin >> userResponse;
    }

    cout << endl;
    return 0;
}

//---------------------------------------------------------
// projectileDistance
//
// In Parameters: velocity (ft/sec), angle (degrees)
//
// Returns: the horizontal distance traveled by a projectile.
//---------------------------------------------------------
double projectileDistance(double velocity, double angle)
{
    return 0.0;
}

//---------------------------------------------------------
// isCorrectDistance
//
// In Parameters: calculatedDist, desiredDist
//
// Returns: true if the calculatedDist is within PERCENT_ERR
//          of desiredDist. Otherwise, it returns false.
//---------------------------------------------------------
bool isCorrectDistance(double calculatedDist, double desiredDist)
{
    return true;
}