Before i developed the console-based Black Jack, i tried developing a slightly simpler game, also console based: Tic-Tac-Toe. Here are the problem statements for both the apps:
Problem Statement for Tic-Tac-Toe:
On an empty board of 3x3 squares, a player and the computer (or another player) pick empty squares to put their X or O (symbols) in. The first one to have their symbols in a row (or column or diagonal) of 3 wins.
Extracted Nouns:
- Board
- Square (or Position)
- Player (this would also address the other player/computer?)
- Game (that would be the engine)
Note: The Tic-Tac-Toe code can be a perfect foundation for a "connect-4" game! … or even a 'expandable' version of Tic-Tac-Toe (4x4, 5x5, etc.)!!
Problem Statement for BlackJack:
BlackJack is a card game played between a dealer and player(s). The dealer starts out with dealing 2 cards from a deck to each player. A player wins if he/she hits a BlackJack (score of 21), unless the dealer has also hit a BlackJack. If neither have hit a BlackJack, player can choose to hit (get dealt another card) till he/she decides to stop/stay, scores 21, or loses (scores more than 21). If the player decides to stay (i.e. < 21), next player chooses to hit or stay. If no player hits a BlackJack, dealer can choose to hit (draw one card at a time) till he/she loses (>21), reaches 17, or wins (hits BlackJack). If dealer reaches anywhere between (>=) 17 and (<) 21, the highest scorer wins.
Class Design:
| Nouns | Properties | Behaviours |
|---|---|---|
| BlackJack | dealer, Player, Deck | check_winner? game-sequence |
| Deck | cards | pop_out_card (to be dealt/drawn), shuffle_cards |
| Card | suit, denomination | value |
| Dealer | hand(of cards) | deal_card (or/and draw_card to self), hit, stay |
| Player | hand(of cards) | hit, stay |
| Hand | cards, total | calculate_total, busted?, display |