+ * Based on the Basic game of Dice here + * https://github.com/coding-horror/basic-computer-games/blob/main/41%20Guess/guess.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 Guess { + + // Used for keyboard input + private final Scanner kbScanner; + + private enum GAME_STATE { + STARTUP, + INPUT_RANGE, + DEFINE_COMPUTERS_NUMBER, + GUESS, + GAME_OVER + } + + // Current game state + private GAME_STATE gameState; + + // User supplied maximum number to guess + private int limit; + + // Computers calculated number for the player to guess + + private int computersNumber; + + // Number of turns the player has had guessing + private int tries; + + // Optimal number of turns it should take to guess + private int calculatedTurns; + + public Guess() { + kbScanner = new Scanner(System.in); + + gameState = GAME_STATE.STARTUP; + } + + /** + * Main game loop + */ + public void play() { + + do { + switch (gameState) { + + case STARTUP: + intro(); + gameState = GAME_STATE.INPUT_RANGE; + break; + + case INPUT_RANGE: + + limit = displayTextAndGetNumber("WHAT LIMIT DO YOU WANT? "); + calculatedTurns = (int) (Math.log(limit) / Math.log(2)) + 1; + gameState = GAME_STATE.DEFINE_COMPUTERS_NUMBER; + break; + + case DEFINE_COMPUTERS_NUMBER: + + tries = 1; + System.out.println("I'M THINKING OF A NUMBER BETWEEN 1 AND " + limit); + computersNumber = (int) (Math.random() * limit + 1); + + gameState = GAME_STATE.GUESS; + break; + + case GUESS: + int playersGuess = displayTextAndGetNumber("NOW YOU TRY TO GUESS WHAT IT IS "); + + // Allow player to restart game with entry of 0 + if (playersGuess == 0) { + linePadding(); + gameState = GAME_STATE.STARTUP; + break; + } + + if (playersGuess == computersNumber) { + System.out.println("THAT'S IT! YOU GOT IT IN " + tries + " TRIES."); + if (tries < calculatedTurns) { + System.out.println("VERY "); + } + System.out.println("GOOD."); + System.out.println("YOU SHOULD HAVE BEEN ABLE TO GET IT IN ONLY " + calculatedTurns); + linePadding(); + gameState = GAME_STATE.DEFINE_COMPUTERS_NUMBER; + break; + } else if (playersGuess < computersNumber) { + System.out.println("TOO LOW. TRY A BIGGER ANSWER."); + } else { + System.out.println("TOO HIGH. TRY A SMALLER ANSWER."); + } + tries++; + break; + } + } while (gameState != GAME_STATE.GAME_OVER); + } + + private void intro() { + System.out.println(simulateTabs(33) + "GUESS"); + System.out.println(simulateTabs(15) + "CREATIVE COMPUTING MORRISTOWN, NEW JERSEY"); + System.out.println(); + System.out.println("THIS IS A NUMBER GUESSING GAME. I'LL THINK"); + System.out.println("OF A NUMBER BETWEEN 1 AND ANY LIMIT YOU WANT."); + System.out.println("THEN YOU HAVE TO GUESS WHAT IT IS."); + } + + /** + * Print a predefined number of blank lines + * + */ + private void linePadding() { + for (int i = 1; i <= 5; i++) { + System.out.println(); + } + } + + /* + * 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(); + } + + /** + * 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); + } + +} diff --git a/41 Guess/java/src/GuessGame.java b/41 Guess/java/src/GuessGame.java new file mode 100644 index 00000000..603cdbfb --- /dev/null +++ b/41 Guess/java/src/GuessGame.java @@ -0,0 +1,6 @@ +public class GuessGame { + public static void main(String[] args) { + Guess guess = new Guess(); + guess.play(); + } +}