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Java Coding 8

Java Coding 8. Object-Oriented Design Example - The Card Game -. David Davenport Computer Eng. Dept., Bilkent University Ankara - Turkey. email: david@bilkent.edu.tr. IMPORTANT…. Students…

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Java Coding 8

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  1. Java Coding 8 Object-Oriented Design Example- The Card Game - David Davenport Computer Eng. Dept., Bilkent UniversityAnkara - Turkey. email: david@bilkent.edu.tr

  2. IMPORTANT… • Students… This presentation is designed to be used in class as part of a guided discovery sequence. It is not self-explanatory! Please use it only for revision purposes after having taken the class. Simply flicking through the slides will teach you nothing. You must be actively thinking, doing and questioning to learn! • Instructors… You are free to use this presentation in your classes and to make any modifications to it that you wish. All I ask is an email saying where and when it is/was used. I would also appreciate any suggestions you may have for improving it. thank you,David.

  3. Card Games As an example of Object Oriented Design

  4. The Problem… • Design & implement a program to play a simple game of cards between four players. To begin, a full pack of cards are shuffled and dealt face-down to the players. The game then proceeds in rounds. For each round, players play the top card from their hand and add it face-up to a pile on the table in front of them. The player who plays the highest value card is the winner of the round and their score is incremented by one. When all of the cards have been played the player with the highest score is declared the winner of the game.

  5. The Problem… • Design & implement a program to play a simple game of cards between four players. To begin, a full pack of cards are shuffled and dealt face-down to the players. The game then proceeds in rounds. For each round, players play the top card from their hand and add it face-up to a pile on the table in front of them. The player who plays the highest value card is the winner of the round and their score is incremented by one. When all of the cards have been played the player with the highest score is declared the winner of the game.

  6. score Table player player player score score score player Pack of cards Picture it… • Objects • the Game? • Pack of cards • Players 1, 2, 3 & 4 • the Table? • Score card? (Player 1, 2, 3 & 4 scores) • Players 1, 2, 3 & 4 Cards on table • Players 1, 2, 3 & 4 Cards in hand

  7. Classes • Player • Name • Set of cards in hand • Cards • Collection of cards • Card • Face value • Suit • CleverGame • Pack of cards • 4 Players • Scorecard(with 4 scores on) • 4 Piles of cards on table • ScoreCard • Set of scores

  8. The Problem… • Design & implement a program to play a simple game of cards between four players. To begin, a full pack of cards are shuffled and dealt face-down to the players. The game then proceeds in rounds. For each round, playersplay the top card from their hand and add it face-up to a pile on the table in front of them. The player who plays the highest value card is the winner of the round and their score is incremented by one. When all of the cards have been played the player with the highest score is declared the winner of the game.

  9. CleverGame class • properties • Pack of cards, 4 Players • ScoreCard, 4 Piles of cards on table • constructor ( 4 players)creates the game with the given players • Methods • + playTurn(Player, Card) : boolean • + isTurnOf(Player) : boolean • + isGameOver() : boolean • + getScore( playerNumber) : int • + getName( playerNumber) : String • + getRoundNo() : int • + getTurnOfPlayerNo() : int • + getWinners() : set of Player Represents a single card game played by 4 players

  10. Player class • properties • name • set of cards in hand • constructor ( name)creates player with name & empty hand • methods • getName()returns players name • add( Card)add the card to players hand • playCard()removes and returns the top card from the players hand Represents a single player for a card game

  11. ScoreCard class • properties • Set of scores • constructor ( noOfScores)initialises scorecard with noOfScores entries all set to zero • methods • + getScore(scoreNo) : int returns specified score • + update( scoreNo, amount)add amount to scoreNo Represents a ScoreCard for a card game

  12. Cards class • properties • Collection of cards • constructor ()creates a collection of cards with no cards in it! • methods • getTopCard()removes & returns top card from collection • addTopCard( Card)adds the card to the collection • createFullPackOfCards() • shuffle()randomises order of cards in collection Represents a set of zero or more playing cards

  13. Card class • properties • faceValue • suit • constructor ( faceValue, suit)creates card with given face value & suitconstructor ( cardNumber)creates card with given position number in ordered pack! • methods • getFaceValue()returns faceValue • getSuit()returns suit • toString() Represents a single playing card

  14. ToDo… • Decide on implementation details • For card, cards collection, … • Design other algorithms • Shuffle, deal, … • Build & test • Extend • Add GUI (Graphical User Interface) • Make interactive • Make clever games & playable over Internet!

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