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» Platforms, Frameworks & Libraries » Game Development » Games Licence First Posted Views Bookmarked

Blackjack Game Simulator By Mladen Jankovic | 24 Aug 2007

CPOL 24 Aug 2007 25,848 23 times

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Framework for blackjack game simulation Article

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Introduction This project provides a framework for a blackjack game simulator. I don't know if this will be useful to someone... someone... Well, it could be useful t o gamblers gamblers for testin g tactics they have heard of. I had to do a presentation, so I hacked something together and in the end, I got this, so it le aves many places for improvement. For more information about the blackjack game and rules, Wikipedia's article is a nice place to start.

Blackjack Game Simulator - CodeProject

http://www.codeproject.com/KB/game/Blackjack_Game_Simulator.aspx

Using the Code The solution contain s five components: BlackJack

- GUI application

Common - Common classes, enums and inter faces used by the framework Game - Component that takes care of blackjack game logic Player - Very simple computer player HumanPlayer - Simple interface for human players

Figure: Component diagram

Common Component The Common component contains: Deck class - managing card deck Hand class - managing player's hand IPlayer interface - interface for blackjack players PlayerOptions enum - possible options on player's turn PlayerInGameStatus enum - current player status (playing or standing) PlayerEndGameStatus enum - player status at the end of the game (winner, loser...) IPlayer's methods are called by the Game component to notify the player about events.

Game Component The Game component contains: PlayerStatus class - wrapper class for player; data such as current player's hand and current

status are stored in this class to prevent cheating :) Game class - blackjack game logic and control PlayerDirectory class - dynamically loads the pl ayer's components Simplified algorithm of the game: 1. 2. 3. 4. 5. 6. 7. 8. 9.

Start a new game Shuffle the deck Begin a new round Deal two cards to all players Ask all players with the status "playing" if they want another card: if someone does, give them another card; if someone doesn't, change his status to "standing" Repeat step 5 while there are players with "playing" status Compare players' hands to declare winner and l osers according to the r ules of the game, u pdating player statistics and end game status Shuffle, deal cards and return them to the end of the deck If this is not t he last round, jump to step 3.

The described algorithm is implemented in the Round, BeginRound, PlayerTurn, GiveCardToPlayer and EndRound methods of the Game class. Game can be observed with events (members of the Game class): OnRoundEnd OnGameEnd OnPlayerAdded OnPlayerRemoved OnPlayerListCleared OnDealerChange

Game runs in its own thread and has methods for synchronization with GUI animations, which are played at the end of a round. At round end, the game thread calls WaitForAnimation and waits until the GUI thread signals that the animation is finished by calling AnimationFinished. Methods



StartGame, StopGame, PauseGame and ContinueGame are used to control the game.

Loading and Instantiation of Players The PlayerDirectory class has the tasks of loading players' components and instantiation of players. In the class constructor, all assemblies from the .\Players folder are checked and loaded if containi ng a player's class. The name of a player class must be MyPlayer and must be in the Player namespace. Other assemblies can be added by calling the LoadPlayer method and specifying the path t o assembly. To create an instance of a player, just call CreateInstanceOfPlayer, specifying the assembly name and constructor parameters as needed. Collapse playerDirectory.CreateInstanceOfPlayer("PlayerWithNameAndAge", new object[]{ "Someone", 30 } );

Simple Player A simple player with simple logic: "If "If "If "If

I have blackjack, I'll stand" I have 21, I'll stand" have more than or equal to 17, I'll stand" I have less than 17, I'll take another"

...can be implemented in a few li nes of code. Collapse using Common; namespace Player { public class MyPlayer : IPlayer { private Hand _myHand = new Hand(); private string _name; public string Name { get { return _name; } } public void NewRound(bool newGame, bool isDealer, int dealersFirstCard, int numberOfDecks) { _myHand.Restart(); } public PlayerOptions Turn(int left) { if (_myHand.IsBlackJack || _myHand.Values.Contains(21)) return PlayerOptions.Stand; return _myHand.Values[0] <= 17 ? PlayerOptions.Hit : PlayerOptions.Stand; } public void GiveCard(int card) { _myHand.Add(card); } public void EndRound(PlayerEndGameStatus List dealedCards) { }

status,

public MyPlayer(string name) { _name = name; } public MyPlayer() { _name = "strange name " + GetHashCode().ToString(); } } }

Framework Project The framework project provides an easy way of testing a player's logic with complete setup of environment an d project. All unne eded source code has been stripped.

Additional Information Like I said, there's room for many improvements (i.e. cards should be presented by class not integer number, animation code can be improved). Also, some rules from blackjack are not implemented, like the split option for players.

Poin ts of Interest Well, my college has had some fun making smarter players and had a little competition. I hope you will enjoy it, too.

History 24 August, 2007 -- Original version posted

License



This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

About the Author Mladen Jankovic Software Developer Coolsoft Software Development Serbia Member

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