- * Based on the Basic game of Slots here - * https://github.com/coding-horror/basic-computer-games/blob/main/80%20Slots/slots.bas - *
- * Note: The idea was to create a version of the 1970's Basic game in Java, without introducing - * new features - no additional text, error checking, etc has been added. - */ -public class Slots { - - public static final String[] SLOT_SYMBOLS = {"BAR", "BELL", "ORANGE", "LEMON", "PLUM", "CHERRY"}; - - public static final int NUMBER_SYMBOLS = SLOT_SYMBOLS.length; - - // Jackpot symbol (BAR) - public static final int BAR_SYMBOL = 0; - - // Indicator that the current spin won nothing - public static final int NO_WINNER = -1; - - // Used for keyboard input - private final Scanner kbScanner; - - private enum GAME_STATE { - START_GAME, - ONE_SPIN, - RESULTS, - GAME_OVER - } - - // Current game state - private GAME_STATE gameState; - - // Different types of spin results - private enum WINNINGS { - JACKPOT(100), - TOP_DOLLAR(10), - DOUBLE_BAR(5), - REGULAR(2), - NO_WIN(0); - - private final int multiplier; - - WINNINGS(int mult) { - multiplier = mult; - } - - // No win returns the negative amount of net - // otherwise calculate winnings based on - // multiplier - public int calculateWinnings(int bet) { - - if (multiplier == 0) { - return -bet; - } else { - // Return original bet plus a multipler - // of the win type - return (multiplier * bet) + bet; - } - } - } - - private int playerBalance; - - public Slots() { - - kbScanner = new Scanner(System.in); - gameState = GAME_STATE.START_GAME; - } - - /** - * Main game loop - */ - public void play() { - - int[] slotReel = new int[3]; - - do { - // Results of a single spin - WINNINGS winnings; - - switch (gameState) { - - case START_GAME: - intro(); - playerBalance = 0; - gameState = GAME_STATE.ONE_SPIN; - break; - - case ONE_SPIN: - - int playerBet = displayTextAndGetNumber("YOUR BET? "); - - slotReel[0] = randomSymbol(); - slotReel[1] = randomSymbol(); - slotReel[2] = randomSymbol(); - - // Store which symbol (if any) matches at least one other reel - int whichSymbolWon = winningSymbol(slotReel[0], slotReel[1], slotReel[2]); - - // Display the three randomly drawn symbols - StringBuilder output = new StringBuilder(); - for (int i = 0; i < 3; i++) { - if (i > 0) { - output.append(" "); - } - output.append(SLOT_SYMBOLS[slotReel[i]]); - } - - System.out.println(output); - - // Calculate results - - if (whichSymbolWon == NO_WINNER) { - // No symbols match = nothing won - winnings = WINNINGS.NO_WIN; - } else if (slotReel[0] == slotReel[1] && slotReel[0] == slotReel[2]) { - // Top dollar, 3 matching symbols - winnings = WINNINGS.TOP_DOLLAR; - if (slotReel[0] == BAR_SYMBOL) { - // All 3 symbols are BAR. Jackpot! - winnings = WINNINGS.JACKPOT; - } - } else { - // At this point the remaining options are a regular win - // or a double, since the rest (including not winning) have already - // been checked above. - // Assume a regular win - winnings = WINNINGS.REGULAR; - - // But if it was the BAR symbol that matched, its a double bar - if (slotReel[0] == BAR_SYMBOL) { - winnings = WINNINGS.DOUBLE_BAR; - } - - } - - // Update the players balance with the amount won or lost on this spin - playerBalance += winnings.calculateWinnings(playerBet); - - System.out.println(); - - // Output what happened on this spin - switch (winnings) { - case NO_WIN: - System.out.println("YOU LOST."); - break; - - case REGULAR: - System.out.println("DOUBLE!!"); - System.out.println("YOU WON!"); - break; - - case DOUBLE_BAR: - System.out.println("*DOUBLE BAR*"); - System.out.println("YOU WON!"); - break; - - case TOP_DOLLAR: - System.out.println(); - System.out.println("**TOP DOLLAR**"); - System.out.println("YOU WON!"); - break; - - case JACKPOT: - System.out.println(); - System.out.println("***JACKPOT***"); - System.out.println("YOU WON!"); - break; - - } - - System.out.println("YOUR STANDINGS ARE $" + playerBalance); - - // If player does not elect to play again, show results of session - if (!yesEntered(displayTextAndGetInput("AGAIN? "))) { - gameState = GAME_STATE.RESULTS; - - } - break; - - case RESULTS: - if (playerBalance == 0) { - System.out.println("HEY, YOU BROKE EVEN."); - } else if (playerBalance > 0) { - System.out.println("COLLECT YOUR WINNINGS FROM THE H&M CASHIER."); - } else { - // Lost - System.out.println("PAY UP! PLEASE LEAVE YOUR MONEY ON THE TERMINAL."); - } - - gameState = GAME_STATE.GAME_OVER; - break; - } - } while (gameState != GAME_STATE.GAME_OVER); - } - - private void intro() { - System.out.println(simulateTabs(30) + "SLOTS"); - System.out.println(simulateTabs(15) + "CREATIVE COMPUTING MORRISTOWN, NEW JERSEY"); - System.out.println(); - System.out.println("YOU ARE IN THE H&M CASINO,IN FRONT OF ONE OF OUR"); - System.out.println("ONE-ARM BANDITS. BET FROM $1 TO $100."); - System.out.println("TO PULL THE ARM, PUNCH THE RETURN KEY AFTER MAKING YOUR BET."); - } - - /* - * Print a message on the screen, then accept input from Keyboard. - * Converts input to an Integer - * - * @param text message to be displayed on screen. - * @return what was typed by the player. - */ - private int displayTextAndGetNumber(String text) { - return Integer.parseInt(displayTextAndGetInput(text)); - } - - /* - * Print a message on the screen, then accept input from Keyboard. - * - * @param text message to be displayed on screen. - * @return what was typed by the player. - */ - private String displayTextAndGetInput(String text) { - System.out.print(text); - return kbScanner.next(); - } - - /** - * Checks whether player entered Y or YES to a question. - * - * @param text player string from kb - * @return true of Y or YES was entered, otherwise false - */ - private boolean yesEntered(String text) { - return stringIsAnyValue(text, "Y", "YES"); - } - - /** - * Check whether a string equals one of a variable number of values - * Useful to check for Y or YES for example - * Comparison is case insensitive. - * - * @param text source string - * @param values a range of values to compare against the source string - * @return true if a comparison was found in one of the variable number of strings passed - */ - private boolean stringIsAnyValue(String text, String... values) { - - return Arrays.stream(values).anyMatch(str -> str.equalsIgnoreCase(text)); - } - - /** - * Simulate the old basic tab(xx) command which indented text by xx spaces. - * - * @param spaces number of spaces required - * @return String with number of spaces - */ - private String simulateTabs(int spaces) { - char[] spacesTemp = new char[spaces]; - Arrays.fill(spacesTemp, ' '); - return new String(spacesTemp); - } - - /** - * Find the symbol that won this round i.e. the first reel that matched another reel - * - * @param reel1 reel1 spin result - * @param reel2 reel2 spin result - * @param reel3 reel3 spin result - * @return NO_WINNER if no reels match otherwise an int 0-2 to indicate the reel that matches another - */ - private int winningSymbol(int reel1, int reel2, int reel3) { - if (reel1 == reel2) { - return 0; - } else if (reel1 == reel3) { - return 0; - } else if (reel2 == reel3) { - return 1; - } else { - return NO_WINNER; - } - } - - /** - * Random symbol for a slot wheel - * - * @return number between 0-5 - */ - private int randomSymbol() { - return (int) (Math.random() * NUMBER_SYMBOLS); - } -} diff --git a/80 Slots/java/src/SlotsGame.java b/80 Slots/java/src/SlotsGame.java deleted file mode 100644 index 05617cf7..00000000 --- a/80 Slots/java/src/SlotsGame.java +++ /dev/null @@ -1,6 +0,0 @@ -public class SlotsGame { - public static void main(String[] args) { - Slots slots = new Slots(); - slots.play(); - } -}