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Merge pull request #57 from ChrisHillRT/fur-trader-csharp

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initial implementation of Fur Trader in csharp
This commit is contained in:
Jeff Atwood
2021-02-20 11:13:07 -08:00
committed by GitHub
parent 4ee666f4cc b6c333b293
commit 03c269e5e7
5 changed files with 601 additions and 0 deletions
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8
38 Fur Trader/csharp/FurTrader.csproj Normal file
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<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>netcoreapp3.1</TargetFramework>
</PropertyGroup>
</Project>

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38 Fur Trader/csharp/FurTrader.sln Normal file
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Microsoft Visual Studio Solution File, Format Version 12.00
# Visual Studio Version 16
VisualStudioVersion = 16.0.30804.86
MinimumVisualStudioVersion = 10.0.40219.1
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FurTrader", "FurTrader.csproj", "{1FB826B9-8794-4DB7-B676-B51F177B7B87}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|Any CPU = Debug|Any CPU
Release|Any CPU = Release|Any CPU
EndGlobalSection
GlobalSection(ProjectConfigurationPlatforms) = postSolution
{1FB826B9-8794-4DB7-B676-B51F177B7B87}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{1FB826B9-8794-4DB7-B676-B51F177B7B87}.Debug|Any CPU.Build.0 = Debug|Any CPU
{1FB826B9-8794-4DB7-B676-B51F177B7B87}.Release|Any CPU.ActiveCfg = Release|Any CPU
{1FB826B9-8794-4DB7-B676-B51F177B7B87}.Release|Any CPU.Build.0 = Release|Any CPU
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE
EndGlobalSection
GlobalSection(ExtensibilityGlobals) = postSolution
SolutionGuid = {DDB24448-50EB-47C6-BDB9-465896A81779}
EndGlobalSection
EndGlobal

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38 Fur Trader/csharp/Game.cs Normal file
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using System;
namespace FurTrader
{
public class Game
{
/// <summary>
/// random number generator; no seed to be faithful to original implementation
/// </summary>
private Random Rnd { get; } = new Random();
/// <summary>
/// Generate a price for pelts based off a factor and baseline value
/// </summary>
/// <param name="factor">Multiplier for the price</param>
/// <param name="baseline">The baseline price</param>
/// <returns>A randomised price for pelts</returns>
internal double RandomPriceGenerator(double factor, double baseline)
{
var price = (Convert.ToInt32((factor * Rnd.NextDouble() + baseline) * 100d) + 5) / 100d;
return price;
}
/// <summary>
/// Main game loop function. This will play the game endlessly until the player chooses to quit or a GameOver event occurs
/// </summary>
/// <remarks>
/// General structure followed from Adam Dawes (@AdamDawes575) implementation of Acey Ducey.");
/// </remarks>
internal void GameLoop()
{
// display instructions to the player
DisplayIntroText();
var state = new GameState();
// loop for each turn until the player decides not to continue (or has a Game Over event)
while ((!state.GameOver) && ContinueGame())
{
// clear display at start of each turn
Console.Clear();
// play the next turn; pass game state for details and updates from the turn
PlayTurn(state);
}
// end screen; show some statistics to the player
Console.Clear();
Console.WriteLine("Thanks for playing!");
Console.WriteLine("");
Console.WriteLine($"Total Expeditions: {state.ExpeditionCount}");
Console.WriteLine($"Final Amount: {state.Savings.ToString("c")}");
}
/// <summary>
/// Display instructions on how to play the game and wait for the player to press a key.
/// </summary>
private void DisplayIntroText()
{
Console.ForegroundColor = ConsoleColor.Yellow;
Console.WriteLine("Fur Trader.");
Console.WriteLine("Creating Computing, Morristown, New Jersey.");
Console.WriteLine("");
Console.ForegroundColor = ConsoleColor.DarkGreen;
Console.WriteLine("Originally published in 1978 in the book 'Basic Computer Games' by David Ahl.");
Console.WriteLine("");
Console.ForegroundColor = ConsoleColor.Gray;
Console.WriteLine("You are the leader of a French fur trading expedition in 1776 leaving the Lake Ontario area to sell furs and get supplies for the next year.");
Console.WriteLine("");
Console.WriteLine("You have a choice of three forts at which you may trade. The cost of supplies and the amount you receive for your furs will depend on the fort that you choose.");
Console.WriteLine("");
Console.ForegroundColor = ConsoleColor.Yellow;
Console.WriteLine("Press any key start the game.");
Console.ReadKey(true);
}
/// <summary>
/// Prompt the player to try again, and wait for them to press Y or N.
/// </summary>
/// <returns>Returns true if the player wants to try again, false if they have finished playing.</returns>
private bool ContinueGame()
{
Console.WriteLine("");
Console.ForegroundColor = ConsoleColor.White;
Console.WriteLine("Do you wish to trade furs? ");
Console.Write("Answer (Y)es or (N)o ");
Console.ForegroundColor = ConsoleColor.Yellow;
Console.Write("> ");
char pressedKey;
// Keep looping until we get a recognised input
do
{
// Read a key, don't display it on screen
ConsoleKeyInfo key = Console.ReadKey(true);
// Convert to upper-case so we don't need to care about capitalisation
pressedKey = Char.ToUpper(key.KeyChar);
// Is this a key we recognise? If not, keep looping
} while (pressedKey != 'Y' && pressedKey != 'N');
// Display the result on the screen
Console.WriteLine(pressedKey);
// Return true if the player pressed 'Y', false for anything else.
return (pressedKey == 'Y');
}
/// <summary>
/// Play a turn
/// </summary>
/// <param name="state">The current game state</param>
private void PlayTurn(GameState state)
{
state.UnasignedFurCount = 190; /// start with 190 furs each turn
// provide current status to user
Console.WriteLine(new string('_', 70));
Console.WriteLine("");
Console.ForegroundColor = ConsoleColor.White;
Console.WriteLine("");
Console.WriteLine($"You have {state.Savings.ToString("c")} savings and {state.UnasignedFurCount} furs to begin the expedition.");
Console.WriteLine("");
Console.WriteLine($"Your {state.UnasignedFurCount} furs are distributed among the following kinds of pelts: Mink, Beaver, Ermine, and Fox");
Console.WriteLine("");
// get input on number of pelts
Console.ForegroundColor = ConsoleColor.White;
Console.Write("How many Mink pelts do you have? ");
state.MinkPelts = GetPelts(state.UnasignedFurCount);
state.UnasignedFurCount -= state.MinkPelts;
Console.WriteLine("");
Console.ForegroundColor = ConsoleColor.White;
Console.WriteLine($"You have {state.UnasignedFurCount} furs remaining for distribution");
Console.Write("How many Beaver pelts do you have? ");
state.BeaverPelts = GetPelts(state.UnasignedFurCount);
state.UnasignedFurCount -= state.BeaverPelts;
Console.WriteLine("");
Console.ForegroundColor = ConsoleColor.White;
Console.WriteLine($"You have {state.UnasignedFurCount} furs remaining for distribution");
Console.Write("How many Ermine pelts do you have? ");
state.ErminePelts = GetPelts(state.UnasignedFurCount);
state.UnasignedFurCount -= state.ErminePelts;
Console.WriteLine("");
Console.ForegroundColor = ConsoleColor.White;
Console.WriteLine($"You have {state.UnasignedFurCount} furs remaining for distribution");
Console.Write("How many Fox pelts do you have? ");
state.FoxPelts = GetPelts(state.UnasignedFurCount);
state.UnasignedFurCount -= state.FoxPelts;
// get input on which fort to trade with; user gets an opportunity to evaluate and re-select fort after selection until user confirms selection
do
{
Console.ForegroundColor = ConsoleColor.White;
Console.WriteLine("");
Console.WriteLine("Do you want to trade your furs at Fort 1, Fort 2, or Fort 3");
Console.WriteLine("Fort 1 is Fort Hochelaga (Montreal) and is under the protection of the French army.");
Console.WriteLine("Fort 2 is Fort Stadacona (Quebec) and is under the protection of the French army. However, you must make a portage and cross the Lachine rapids.");
Console.WriteLine("Fort 3 is Fort New York and is under Dutch control. You must cross through Iroquois land.");
Console.WriteLine("");
state.SelectedFort = GetSelectedFort();
DisplaySelectedFortInformation(state.SelectedFort);
} while (TradeAtAnotherFort());
// process the travel to the fort
ProcessExpeditionOutcome(state);
// display results of expedition (savings change) to the user
Console.ForegroundColor = ConsoleColor.White;
Console.Write("You now have ");
Console.ForegroundColor = ConsoleColor.Yellow;
Console.Write($"{state.Savings.ToString("c")}");
Console.ForegroundColor = ConsoleColor.White;
Console.WriteLine(" including your previous savings.");
// update the turn count now that another turn has been played
state.ExpeditionCount += 1;
}
/// <summary>
/// Method to show the expedition costs to the player with some standard formatting
/// </summary>
/// <param name="fortname">The name of the fort traded with</param>
/// <param name="supplies">The cost of the supplies at the fort</param>
/// <param name="expenses">The travel expenses for the expedition</param>
internal void DisplayCosts(string fortname, double supplies, double expenses)
{
Console.ForegroundColor = ConsoleColor.White;
Console.Write($"Supplies at {fortname} cost".PadLeft(55));
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine($"{supplies.ToString("c").PadLeft(10)}");
Console.ForegroundColor = ConsoleColor.White;
Console.Write($"Your travel expenses to {fortname} were".PadLeft(55));
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine($"{expenses.ToString("c").PadLeft(10)}");
Console.ForegroundColor = ConsoleColor.White;
}
/// <summary>
/// Process the results of the expedition
/// </summary>
/// <param name="state">the game state</param>
private void ProcessExpeditionOutcome(GameState state)
{
var beaverPrice = RandomPriceGenerator(0.25d, 1.00d);
var foxPrice = RandomPriceGenerator(0.2d , 0.80d);
var erminePrice = RandomPriceGenerator(0.15d, 0.95d);
var minkPrice = RandomPriceGenerator(0.2d , 0.70d);
var fortname = String.Empty;
var suppliesCost = 0.0d;
var travelExpenses = 0.0d;
// create a random value 1 to 10 for the different outcomes at each fort
var p = ((int)(10 * Rnd.NextDouble())) + 1;
Console.WriteLine("");
switch (state.SelectedFort)
{
case 1: // outcome for expedition to Fort Hochelaga
beaverPrice = RandomPriceGenerator(0.2d, 0.75d);
foxPrice = RandomPriceGenerator(0.2d, 0.80d);
erminePrice = RandomPriceGenerator(0.2d, 0.65d);
minkPrice = RandomPriceGenerator(0.2d, 0.70d);
fortname = "Fort Hochelaga";
suppliesCost = 150.0d;
travelExpenses = 10.0d;
break;
case 2: // outcome for expedition to Fort Stadacona
beaverPrice = RandomPriceGenerator(0.2d , 0.90d);
foxPrice = RandomPriceGenerator(0.2d , 0.80d);
erminePrice = RandomPriceGenerator(0.15d, 0.80d);
minkPrice = RandomPriceGenerator(0.3d , 0.85d);
fortname = "Fort Stadacona";
suppliesCost = 125.0d;
travelExpenses = 15.0d;
if (p <= 2)
{
state.BeaverPelts = 0;
Console.WriteLine("Your beaver were to heavy to carry across the portage.");
Console.WriteLine("You had to leave the pelts but found them stolen when you returned");
}
else if (p <= 6)
{
Console.WriteLine("You arrived safely at Fort Stadacona");
}
else if (p <= 8)
{
state.BeaverPelts = 0;
state.FoxPelts = 0;
state.ErminePelts = 0;
state.MinkPelts = 0;
Console.WriteLine("Your canoe upset in the Lachine Rapids.");
Console.WriteLine("Your lost all your furs");
}
else if (p <= 10)
{
state.FoxPelts = 0;
Console.WriteLine("Your fox pelts were not cured properly.");
Console.WriteLine("No one will buy them.");
}
else
{
throw new Exception($"Unexpected Outcome p = {p}");
}
break;
case 3: // outcome for expedition to Fort New York
beaverPrice = RandomPriceGenerator(0.2d , 1.00d);
foxPrice = RandomPriceGenerator(0.25d, 1.10d);
erminePrice = RandomPriceGenerator(0.2d , 0.95d);
minkPrice = RandomPriceGenerator(0.15d, 1.05d);
fortname = "Fort New York";
suppliesCost = 80.0d;
travelExpenses = 25.0d;
if (p <= 2)
{
state.BeaverPelts = 0;
state.FoxPelts = 0;
state.ErminePelts = 0;
state.MinkPelts = 0;
suppliesCost = 0.0d;
travelExpenses = 0.0d;
Console.WriteLine("You were attacked by a party of Iroquois.");
Console.WriteLine("All people in your trading group were killed.");
Console.WriteLine("This ends the game (press any key).");
Console.ReadKey(true);
state.GameOver = true;
}
else if (p <= 6)
{
Console.WriteLine("You were lucky. You arrived safely at Fort New York.");
}
else if (p <= 8)
{
state.BeaverPelts = 0;
state.FoxPelts = 0;
state.ErminePelts = 0;
state.MinkPelts = 0;
Console.WriteLine("You narrowly escaped an Iroquois raiding party.");
Console.WriteLine("However, you had to leave all your furs behind.");
}
else if (p <= 10)
{
beaverPrice = beaverPrice / 2;
minkPrice = minkPrice / 2;
Console.WriteLine("Your mink and beaver were damaged on your trip.");
Console.WriteLine("You receive only half the current price for these furs.");
}
else
{
throw new Exception($"Unexpected Outcome p = {p}");
}
break;
default:
break;
}
var beaverSale = state.BeaverPelts * beaverPrice;
var foxSale = state.FoxPelts * foxPrice;
var ermineSale = state.ErminePelts * erminePrice;
var minkSale = state.MinkPelts * minkPrice;
var profit = beaverSale + foxSale + ermineSale + minkSale - suppliesCost - travelExpenses;
state.Savings += profit;
Console.WriteLine("");
Console.ForegroundColor = ConsoleColor.White;
Console.Write($"Your {state.BeaverPelts.ToString().PadLeft(3, ' ')} beaver pelts sold @ {beaverPrice.ToString("c")} per pelt for a total");
Console.ForegroundColor = ConsoleColor.Green;
Console.WriteLine($"{beaverSale.ToString("c").PadLeft(10)}");
Console.ForegroundColor = ConsoleColor.White;
Console.Write($"Your {state.FoxPelts.ToString().PadLeft(3, ' ')} fox pelts sold @ {foxPrice.ToString("c")} per pelt for a total");
Console.ForegroundColor = ConsoleColor.Green;
Console.WriteLine($"{foxSale.ToString("c").PadLeft(10)}");
Console.ForegroundColor = ConsoleColor.White;
Console.Write($"Your {state.ErminePelts.ToString().PadLeft(3, ' ')} ermine pelts sold @ {erminePrice.ToString("c")} per pelt for a total");
Console.ForegroundColor = ConsoleColor.Green;
Console.WriteLine($"{ermineSale.ToString("c").PadLeft(10)}");
Console.ForegroundColor = ConsoleColor.White;
Console.Write($"Your {state.MinkPelts.ToString().PadLeft(3, ' ')} mink pelts sold @ {minkPrice.ToString("c")} per pelt for a total");
Console.ForegroundColor = ConsoleColor.Green;
Console.WriteLine($"{minkSale.ToString("c").PadLeft(10)}");
Console.WriteLine("");
DisplayCosts(fortname, suppliesCost, travelExpenses);
Console.WriteLine("");
Console.Write($"Profit / Loss".PadLeft(55));
Console.ForegroundColor = profit >= 0.0d ? ConsoleColor.Green : ConsoleColor.Red;
Console.WriteLine($"{profit.ToString("c").PadLeft(10)}");
Console.ForegroundColor = ConsoleColor.White;
Console.WriteLine("");
}
private void DisplaySelectedFortInformation(int selectedFort)
{
Console.WriteLine("");
Console.ForegroundColor = ConsoleColor.White;
switch (selectedFort)
{
case 1: // selected fort details for Fort Hochelaga
Console.WriteLine("You have chosen the easiest route.");
Console.WriteLine("However, the fort is far from any seaport.");
Console.WriteLine("The value you receive for your furs will be low.");
Console.WriteLine("The cost of supplies will be higher than at Forts Stadacona or New York");
break;
case 2: // selected fort details for Fort Stadacona
Console.WriteLine("You have chosen a hard route.");
Console.WriteLine("It is, in comparsion, harder than the route to Hochelaga but easier than the route to New York.");
Console.WriteLine("You will receive an average value for your furs.");
Console.WriteLine("The cost of your supplies will be average.");
break;
case 3: // selected fort details for Fort New York
Console.WriteLine("You have chosen the most difficult route.");
Console.WriteLine("At Fort New York you will receive the higest value for your furs.");
Console.WriteLine("The cost of your supplies will be lower than at all the other forts.");
break;
default:
break;
}
}
private bool TradeAtAnotherFort()
{
Console.ForegroundColor = ConsoleColor.White;
Console.WriteLine("");
Console.WriteLine("Do you want to trade at another fort?");
Console.Write("Answer (Y)es or (N)o ");
Console.ForegroundColor = ConsoleColor.Yellow;
Console.Write("> ");
char pressedKey;
// Keep looping until we get a recognised input
do
{
// Read a key, don't display it on screen
ConsoleKeyInfo key = Console.ReadKey(true);
// Convert to upper-case so we don't need to care about capitalisation
pressedKey = Char.ToUpper(key.KeyChar);
// Is this a key we recognise? If not, keep looping
} while (pressedKey != 'Y' && pressedKey != 'N');
// Display the result on the screen
Console.WriteLine(pressedKey);
// Return true if the player pressed 'Y', false for anything else.
return (pressedKey == 'Y');
}
/// <summary>
/// Get an amount of pelts from the user
/// </summary>
/// <param name="currentMoney">The total pelts available</param>
/// <returns>Returns the amount the player selects</returns>
private int GetPelts(int furCount)
{
int peltCount;
// loop until the user enters a valid value
do
{
Console.ForegroundColor = ConsoleColor.Yellow;
Console.Write("> ");
string input = Console.ReadLine();
// parse user information to check if it is a valid entry
if (!int.TryParse(input, out peltCount))
{
// invalid entry; message back to user
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine("Sorry, I didn't understand. Please enter the number of pelts.");
// continue looping
continue;
}
// check if plet amount is more than the available pelts
if (peltCount > furCount)
{
// too many pelts selected
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine($"You may not have that many furs. Do not try to cheat. I can add.");
// continue looping
continue;
}
// valid pelt amount entered
break;
} while (true);
// return pelt count to the user
return peltCount;
}
/// <summary>
/// Prompt the user for their selected fort
/// </summary>
/// <returns>returns the fort the user has selected</returns>
private int GetSelectedFort()
{
int selectedFort;
// loop until the user enters a valid value
do
{
Console.ForegroundColor = ConsoleColor.White;
Console.Write("Answer 1, 2, or 3 ");
Console.ForegroundColor = ConsoleColor.Yellow;
Console.Write("> ");
string input = Console.ReadLine();
// is the user entry valid
if (!int.TryParse(input, out selectedFort))
{
// no, invalid data
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine("Sorry, I didn't understand. Please answer 1, 2, or 3.");
// continue looping
continue;
}
// is the selected fort an option (one, two or three only)
if (selectedFort != 1 && selectedFort != 2 && selectedFort != 3)
{
// no, invalid for selected
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine($"Please answer 1, 2, or 3.");
// continue looping
continue;
}
// valid fort selected, stop looping
break;
} while (true);
// return the players selected fort
return selectedFort;
}
}
}

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38 Fur Trader/csharp/GameState.cs Normal file
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using System;
using System.Collections.Generic;
using System.Text;
namespace FurTrader
{
internal class GameState
{
internal bool GameOver { get; set; }
internal double Savings { get; set; }
internal int ExpeditionCount { get; set; }
internal int UnasignedFurCount { get; set; }
internal int[] Pelts { get; private set; }
internal int MinkPelts { get { return this.Pelts[0]; } set { this.Pelts[0] = value; } }
internal int BeaverPelts { get { return this.Pelts[0]; } set { this.Pelts[0] = value; } }
internal int ErminePelts { get { return this.Pelts[0]; } set { this.Pelts[0] = value; } }
internal int FoxPelts { get { return this.Pelts[0]; } set { this.Pelts[0] = value; } }
internal int SelectedFort { get; set; }
internal GameState()
{
this.Savings = 600;
this.ExpeditionCount = 0;
this.UnasignedFurCount = 190;
this.Pelts = new int[4];
this.SelectedFort = 0;
}
internal void StartTurn()
{
this.SelectedFort = 0; // reset to a default value
this.UnasignedFurCount = 190; // each turn starts with 190 furs
this.Pelts = new int[4]; // reset pelts on each turn
}
}
}

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38 Fur Trader/csharp/Program.cs Normal file
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using System;
namespace FurTrader
{
public class Program
{
/// <summary>
/// This function will be called automatically when the application begins
/// </summary>
/// <param name="args"></param>
public static void Main(string[] args)
{
// Create an instance of our main Game class
var game = new Game();
// Call its GameLoop function. This will play the game endlessly in a loop until the player chooses to quit.
game.GameLoop();
}
}
}