Java version of Guess

41 Guess/java/src/Guess.java

@@ -0,0 +1,161 @@
+import java.util.Arrays;
+import java.util.Scanner;
+
+/**
+ * Game of Guess
+ * <p>
+ * Based on the Basic game of Dice here
+ * https://github.com/coding-horror/basic-computer-games/blob/main/41%20Guess/guess.bas
+ * <p>
+ * 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);
+    }
+
+}

41 Guess/java/src/GuessGame.java

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+public class GuessGame {
+    public static void main(String[] args) {
+        Guess guess = new Guess();
+        guess.play();
+    }
+}