// prints a visual display of the lander's height
public void PrintLocation(MarsLander ml)
{
int height = ml.GetHeight();
// used the modulus operator to detect if the height was evenly divisible by 100
// if not, it subtracts the remainder
if ((height % 100) != 0)
{
height -= (height % 100);
}
Console.WriteLine();
for (int i = 1000; i > height; i -= 100)
{
Console.WriteLine("{0}m:", i);
}
// manually building the line with the asterisk
Console.WriteLine("{0}m: *", height);
// using a for loop to build the rest
for (int i = (height - 100); i >= 0; i -= 100)
{
Console.WriteLine("{0}m:", i);
}
Console.WriteLine();
}
/// <summary>
/// This prints out the info about the lander
/// For example:
/// Exact height: 1350 meters
/// Current (downward) speed: -350 meters/second
/// Fuel points left: 0
//// </summary>
/// <param name="ml">MarsLander</param>
public void PrintLanderInfo(MarsLander ml)
{
Console.WriteLine("Exact height: {0} meters", ml.GetCurrent().GetHeight());
Console.WriteLine("Current (downward)speed: {0} meters / second", ml.GetCurrent().GetSpeed());
Console.WriteLine("Fuel points left: {0}", ml.GetFuel());
Console.WriteLine();
}
public void PrintLocation(MarsLander lander)
{
int height;
if (lander.getHeight() <= 1000)
{
height = 1000;
}
else
{
height = lander.getHeight();
}
for (int i = 0; i < lander.getHeight(); i++)
{
if (height < 0)
{
break;
}
else if (height / 100 == lander.getHeight() / 100)
{
Console.WriteLine("{0}m: *", height);
height -= 100;
}
else
{
Console.WriteLine("{0}m: ", height);
height -= 100;
}
}
Console.WriteLine();
}
/// <summary>
/// This will ask the user for how much fuel he/she wants to burn,
/// verify that he/she's typed in an acceptable integer,
/// (repeatedly asking the user for input if needed),
/// and will then return that number back to the main method
/// </summary>
/// <param name="ml">MarsLander</param>
/// <returns>Amount of fuel to burn</returns>
public int GetFuelToBurn(MarsLander ml)
{
int avail = ml.GetFuel();
int fuel = 0;
while (true)
{
Console.WriteLine("How many points of fuel would you like to burn?");
string line = Console.ReadLine();
if (!int.TryParse(line, out fuel))
{
Console.WriteLine("You need to type a whole number of fuel points to burn!");
}
else if (fuel < 0)
{
Console.WriteLine("You can't burn less than 0 points of fuel!");
}
else if (fuel > avail)
{
Console.WriteLine("You don't have {0} points of fuel!", fuel);
}
else
{
break;
}
Console.WriteLine();
Console.WriteLine("Just as a reminder, here's where the lander is: ");
PrintLanderInfo(ml);
}
return fuel;
}
// In a nutshell, the program is made up of four major classes:
//
// 1. This Program class
// It houses main; main's job is to drive the overall logic of the game
//
// 2. MarsLander
// This stores the current height, speed, and fuel of the lander (properly encapsulated)
// This also has an instance of the 'MarsLanderHistory' object, and the lander is
// responsible for adding to the history whenever it calculates the lander's new speed
//
// 3. UserInterface
// This handles ALL interactions with the user.
// NO OTHER CLASS IS ALLOWED TO INTERACT WITH THE USER!!
//
// 3. MarsLanderHistory
// This manages an array of RoundInfo objects. It will provide a method to add
// another round to the history of the lander (and will resize the array, if needed)
// It provides a Clone method so that the lander can return a copy of the
// history (which will prevent other classes from changing it's history)
// And it provides a way to get the number of rounds, and (for each round) the
// height and speed of that round (the UserInterface.PrintHistory method will use these)
// (This class uses the provided, minor RoundInfo class)
//
// Substantial amounts of this program have been commented out, so that the program will compile
//
static void Main(string[] args)
{
UserInterface ui = new UserInterface();
MarsLander lander = new MarsLander();
const int MAX_SPEED = 10; // 10 m/s
// const means that we can't change the value after this line
ui.PrintGreeting();
while (lander.GetHeight() > 0)
{
ui.PrintLocation(lander);
ui.PrintLanderInfo(lander);
int fuelToBurn = ui.GetFuelToBurn(lander);
lander.CalculateNewSpeed(fuelToBurn);
}
ui.PrintLocation(lander);
ui.PrintLanderInfo(lander);
ui.PrintEndOfGameResult(lander, MAX_SPEED);
}
/// <summary>
/// This will ask the user for how much fuel he/she wants to burn,
/// verify that he/she's typed in an acceptable integer,
/// (repeatedly asking the user for input if needed),
/// and will then return that number back to the main method
/// </summary>
/// <param name="ml">MarsLander</param>
/// <returns>Amount of fuel to burn</returns>
public int GetFuelToBurn(MarsLander ml)
{
int avail = ml.GetFuel(); //available fuel
int fuel = 0;
while (true)
{
Console.WriteLine("How many points of fuel would you like to burn?");
string line = Console.ReadLine();
if (!int.TryParse(line, out fuel))
{
Console.WriteLine("You need to type a whole number of fuel points to burn!");
}
else if (fuel < 0)
{
Console.WriteLine("You can't burn less than 0 points of fuel!");
}
else if (fuel > avail)
{
Console.WriteLine("You don't have {0} points of fuel!", fuel);
}
else
{
break;
}
Console.WriteLine();
Console.WriteLine("Just as a reminder, here's where the lander is: ");
PrintLanderInfo(ml);
}
return(fuel);
}
/// <summary>
/// This will print the 'picture' of the lander
/// for example:
/// 1000m: *
///
/// 900m:
/// 800m:
/// etc, etc
/// </summary>
/// /// <param name="ml">MarsLander</param>
public void PrintLocation(MarsLander ml)
{
// use integer math to determine which 100's block the current height is in.
int alt = (ml.GetCurrent().GetHeight()) / 100;
Console.WriteLine("{0}00m: *", alt);
while (alt > 0)
{
alt--;
Console.WriteLine("{0}00m:", alt);
}
Console.WriteLine();
}
/// <summary>
/// This will only be called once the lander is on the surface of Mars,
/// and will tell the player if they successly landed or if they crashed
/// </summary>
/// <param name="ml">MarsLander</param>
/// <param name="maxSpeed">Maximum speed at landing</param>
public void PrintEndOfGameResult(MarsLander ml, int maxSpeed)
{
if (ml.GetCurrent().GetSpeed() > maxSpeed)
{
Console.WriteLine("The maximum speed for a safe landing is {0}; your lander's current speed is {1}", maxSpeed, ml.GetCurrent().GetSpeed());
Console.WriteLine("You have crashed the lander into the surface of Mars, killing everyone on board,");
Console.WriteLine("costing NASA millions of dollars, and setting the space program back by decades!");
}
else
{
Console.WriteLine("Congratulations!! You've successfully landed your Mars Lander, without crashing!!!");
}
Console.WriteLine("Here's the height/speed info for you:");
PrintHistory(ml.GetHistory());
}
// This will only be called once the lander is on the surface of Mars,
// and will tell the player if they successly landed or if they crashed
public void PrintEndOfGameResult(MarsLander ml, int maxSpeed)
{
if (ml.GetSpeed() <= maxSpeed && ml.GetHeight() == 0)
{
Console.WriteLine("Congratulations!! You've successfully landed your Mars Lander, without crashing!!!");
}
else
{
Console.WriteLine("The maximum speed for a safe landing is 10; " +
$"your lander's current speed is {ml.GetSpeed()}");
Console.WriteLine("You have crashed the lander into the surface of Mars, killing everyone on board," +
"costing NASA millions of dollars, and setting the space program back by decades!");
}
PrintHistory(ml.GetHistory(maxSpeed));
}
/// <summary>
/// This will only be called once the lander is on the surface of Mars,
/// and will tell the player if they successly landed or if they crashed
/// </summary>
/// <param name="ml">MarsLander</param>
/// <param name="maxSpeed">Maximum speed at landing</param>
public void PrintEndOfGameResult(MarsLander ml, int maxSpeed)
{
if (ml.GetCurrent().GetSpeed() > maxSpeed)
{
Console.WriteLine("The maximum speed for a safe landing is {0}; your lander's current speed is {1}", maxSpeed, ml.GetCurrent().GetSpeed());
Console.WriteLine("You have crashed the lander into the surface of Mars, killing everyone on board,");
Console.WriteLine("costing NASA millions of dollars, and setting the space program back by decades!");
}
else
{
Console.WriteLine("Congratulations!! You've successfully landed your Mars Lander, without crashing!!!");
}
Console.WriteLine("Here's the height/speed info for you:");
PrintHistory(ml.GetHistory());
}
// This will ask the user for how much fuel they want to burn,
// verify that they've type in an acceptable integer,
// (repeatedly asking the user for input if needed),
// and will then return that number back to the main method
public int GetFuelToBurn(MarsLander ml)
{
int nFuel = 0;
bool isNum = false;
int attempts = 0;
while (true)
{
Console.WriteLine("\nHow many points of fuel would you like to burn?");
// attempts to convert the string of input into the integer nFuel
isNum = Int32.TryParse(Console.ReadLine(), out nFuel);
// to clearly show the end of the turn
Console.WriteLine("\n=================================================");
// once enough input has been wrong, the user is reminded where everything is
if (attempts == 1)
{
Console.WriteLine("\n");
Console.WriteLine("Just as a reminder, here's where the lander is: \n");
PrintLanderInfo(ml);
Console.WriteLine();
attempts = 0;
}
if (isNum == false)
{
Console.WriteLine("You need to type a whole number of fuel points to burn!\n");
attempts++;
}
else if (nFuel < 0)
{
Console.WriteLine("You can't burn less than 0 points of fuel!");
attempts++;
}
else if (nFuel > ml.GetFuel())
{
Console.WriteLine("You don't have {0} points of fuel!", nFuel);
attempts++;
}
else
{
return(nFuel);
}
}
}
public int GetFuelToBurn(MarsLander lander)
{
bool errorDone = true;
string szInput;
int userNum;
while (errorDone == true)
{
Console.WriteLine("How many points of fuel would you like to burn?");
szInput = Console.ReadLine();
Int32.TryParse(szInput, out userNum);
if (Int32.TryParse(szInput, out userNum) == true)
{
if (userNum < 0)
{
Console.WriteLine("You can't burn less than 0 points of fuel!");
Console.WriteLine();
Console.WriteLine("Just as a reminder, here's where the lander is: ");
PrintLanderInfo(lander);
continue;
}
else if (userNum > lander.getFuel())
{
Console.WriteLine("You don't have {0} points of fuel!", userNum);
Console.WriteLine();
Console.WriteLine("Just as a reminder, here's where the lander is: ");
PrintLanderInfo(lander);
continue;
}
else
{
errorDone = false;
return(userNum);
}
}
else
{
Console.WriteLine("You need to type a whole number of fuel points to burn!");
Console.WriteLine();
Console.WriteLine("Just as a reminder, here's where the lander is: ");
PrintLanderInfo(lander);
continue;
}
}
return(-1);// yeah?
}
// This should print the 'picture' of hte lander
// for example:
// 1000m: *
// 900m:
// 800m:
// etc, etc
public void PrintLocation(MarsLander m)
{
int i = m.GetHeight() / 100 * 100;
if ((m.GetHeight() / 100) * 100 < 1000)
{
i = 1000;
}
for (; i >= 0; i -= 100)
{
if (i == (m.GetHeight() / 100) * 100)
{
Console.WriteLine($"{i}m : * ");
}
else
{
Console.WriteLine($"{i}m : ");
}
}
}
// This will ask the user for how much fuel they want to burn,
// verify that they've type in an acceptable integer,
// (repeatedly asking the user for input if needed),
// and will then return that number back to the main method
public int GetFuelToBurn(MarsLander m)
{
bool looper = false;
bool endLoop = false;
while (endLoop == false)
{
if (looper == true)
{
Console.WriteLine("Just as a reminder, here's where the lander is: ");
PrintLanderInfo(m);
}
looper = true;
Console.WriteLine("How many points of fuel would you like to burn?");
string tempString = Console.ReadLine();
int nFuel;
if (!Int32.TryParse(tempString, out nFuel))
{
Console.WriteLine("Please enter a valid integer");
}
else if (nFuel >= 0 && m.GetFuel() >= nFuel)
{
return(nFuel);
}
else if (nFuel < 0)
{
Console.WriteLine("You cannot burn less than 0 points of fuel!");
}
else if (m.GetFuel() < nFuel)
{
Console.WriteLine($"You don't have {nFuel} points of fuel.");
}
}
return(0);
}
public void PrintEndOfGameResult(MarsLander ml, int maxSpeed)
{
if (ml.GetSpeed() <= maxSpeed)
{
Console.WriteLine("\n=================================================");
Console.WriteLine(" SUCCESS");
Console.WriteLine("=================================================\n");
Console.WriteLine("Congratulations!! \n" +
"You've successfully landed your Mars Lander, without crashing!!!");
}
else
{
Console.WriteLine("\n=================================================");
Console.WriteLine(" FAILURE");
Console.WriteLine("=================================================\n");
Console.WriteLine("The maximum speed for a safe landing is {0}m/s; \n" +
"your lander's current speed is {1}m/s... \n" +
"\nYou have crashed the lander into the surface of Mars, \n" +
"killing everyone on board, costing NASA millions of dollars, \n" +
"and setting the space program back by decades! :(", maxSpeed, ml.GetSpeed());
}
PrintHistory(ml.GetHistory());
}
/// <summary>
/// This prints out the info about the lander
/// For example:
/// Exact height: 1350 meters
/// Current (downward) speed: -350 meters/second
/// Fuel points left: 0
//// </summary>
public void PrintLanderInfo(MarsLander ml)
{
Console.WriteLine("Exact height: {0} meters", ml.GetCurrent().GetHeight());
Console.WriteLine("Current (downward)speed: {0} meters / second", ml.GetCurrent().GetSpeed());
Console.WriteLine("Fuel points left: {0}", ml.GetFuel());
Console.WriteLine();
}
// This prints out the info about the lander
// For example:
// Exact height: 1350 meters
// Current (downward) speed: -350 meters/second
// Fuel points left: 0
public void PrintLanderInfo(MarsLander m)
{
Console.WriteLine($"Exact height : {m.GetHeight()} meters\n" +
$"Current (downward) speed: {m.GetSpeed()} meters/second\n" +
$"Fuel points left : {m.GetFuel()}");
}
/// <summary>
/// This will print the 'picture' of the lander
/// for example:
/// 1000m: *
/// 900m:
/// 800m:
/// etc, etc
/// </summary>
public void PrintLocation(MarsLander ml)
{
// use integer math to determine which 100's block the current height is in.
int alt = (ml.GetCurrent().GetHeight()) / 100;
Console.WriteLine("{0}00m: *", alt);
while (alt > 0)
{
alt--;
Console.WriteLine("{0}00m:", alt);
}
Console.WriteLine();
}
