Merge pull request #178 from journich/main

Java port of Mugwump

62 Mugwump/java/src/Mugwump.java

@@ -0,0 +1,186 @@
+import java.util.Arrays;
+import java.util.Scanner;
+
+/**
+ * Game of Mugwump
+ * <p>
+ * Based on the Basic game of Mugwump here
+ * https://github.com/coding-horror/basic-computer-games/blob/main/62%20Mugwump/mugwump.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 Mugwump {
+
+    public static final int NUMBER_OF_MUGWUMPS = 4;
+
+    public static final int MAX_TURNS = 10;
+
+    public static final int FOUND = -1;
+
+    // Used for keyboard input
+    private final Scanner kbScanner;
+
+    private enum GAME_STATE {
+        INIT,
+        GAME_START,
+        PLAY_TURN
+    }
+
+    // Current game state
+    private GAME_STATE gameState;
+
+    int[][] mugwumpLocations;
+
+    int turn;
+
+    public Mugwump() {
+        kbScanner = new Scanner(System.in);
+        gameState = GAME_STATE.INIT;
+    }
+
+    /**
+     * Main game loop
+     */
+    public void play() {
+
+        do {
+            switch (gameState) {
+
+                case INIT:
+                    intro();
+                    gameState = GAME_STATE.GAME_START;
+
+                    break;
+
+                case GAME_START:
+
+                    turn = 0;
+
+                    // initialise all array elements with 0
+                    mugwumpLocations = new int[NUMBER_OF_MUGWUMPS][2];
+
+                    // Place 4 mugwumps
+                    for (int i = 0; i < NUMBER_OF_MUGWUMPS; i++) {
+                        for (int j = 0; j < 2; j++) {
+                            mugwumpLocations[i][j] = (int) (Math.random() * 10);
+                        }
+                    }
+                    gameState = GAME_STATE.PLAY_TURN;
+                    break;
+
+                case PLAY_TURN:
+                    turn++;
+                    String locations = displayTextAndGetInput("TURN NO." + turn + " -- WHAT IS YOUR GUESS? ");
+                    int distanceRightGuess = getDelimitedValue(locations, 0);
+                    int distanceUpGuess = getDelimitedValue(locations, 1);
+
+                    int numberFound = 0;
+                    for (int i = 0; i < NUMBER_OF_MUGWUMPS; i++) {
+
+                        if (mugwumpLocations[i][0] == FOUND) {
+                            numberFound++;
+                        }
+
+                        int right = mugwumpLocations[i][0];
+                        int up = mugwumpLocations[i][1];
+
+                        if (right == distanceRightGuess && up == distanceUpGuess) {
+                            if (right != FOUND) {
+                                System.out.println("YOU HAVE FOUND MUGWUMP " + (i + 1));
+                                mugwumpLocations[i][0] = FOUND;
+                            }
+                            numberFound++;
+                        } else {
+                            // Not found so show distance
+                            if (mugwumpLocations[i][0] != FOUND) {
+                                double distance = Math.sqrt((Math.pow(right - distanceRightGuess, 2.0d))
+                                        + (Math.pow(up - distanceUpGuess, 2.0d)));
+
+                                System.out.println("YOU ARE " + (int) ((distance * 10) / 10) + " UNITS FROM MUGWUMP");
+                            }
+                        }
+                    }
+
+                    if (numberFound == NUMBER_OF_MUGWUMPS) {
+                        System.out.println("YOU GOT THEM ALL IN " + turn + " TURNS!");
+                        gameState = GAME_STATE.GAME_START;
+                    } else if (turn >= MAX_TURNS) {
+                        System.out.println("SORRY, THAT'S " + MAX_TURNS + " TRIES.  HERE IS WHERE THEY'RE HIDING");
+                        for (int i = 0; i < NUMBER_OF_MUGWUMPS; i++) {
+                            if (mugwumpLocations[i][0] != FOUND) {
+                                System.out.println("MUGWUMP " + (i + 1) + " IS AT ("
+                                        + mugwumpLocations[i][0] + "," + mugwumpLocations[i][1] + ")");
+                            }
+                        }
+                        gameState = GAME_STATE.GAME_START;
+                    }
+
+                    // Game ended?
+                    if (gameState != GAME_STATE.PLAY_TURN) {
+                        System.out.println("THAT WAS FUN! LET'S PLAY AGAIN.......");
+                        System.out.println("FOUR MORE MUGWUMPS ARE NOW IN HIDING.");
+                    }
+            }
+            // Infinite loop - based on original basic version
+        } while (true);
+    }
+
+    private void intro() {
+        System.out.println(addSpaces(33) + "MUGWUMP");
+        System.out.println(addSpaces(15) + "CREATIVE COMPUTING  MORRISTOWN, NEW JERSEY");
+        System.out.println();
+        System.out.println("THE OBJECT OF THIS GAME IS TO FIND FOUR MUGWUMPS");
+        System.out.println("HIDDEN ON A 10 BY 10 GRID.  HOMEBASE IS POSITION 0,0.");
+        System.out.println("ANY GUESS YOU MAKE MUST BE TWO NUMBERS WITH EACH");
+        System.out.println("NUMBER BETWEEN 0 AND 9, INCLUSIVE.  FIRST NUMBER");
+        System.out.println("IS DISTANCE TO RIGHT OF HOMEBASE AND SECOND NUMBER");
+        System.out.println("IS DISTANCE ABOVE HOMEBASE.");
+        System.out.println();
+        System.out.println("YOU GET 10 TRIES.  AFTER EACH TRY, I WILL TELL");
+        System.out.println("YOU HOW FAR YOU ARE FROM EACH MUGWUMP.");
+    }
+
+    /**
+     * Accepts a string delimited by comma's and returns the pos'th delimited
+     * value (starting at count 0).
+     *
+     * @param text - text with values separated by comma's
+     * @param pos  - which position to return a value for
+     * @return the int representation of the value
+     */
+    private int getDelimitedValue(String text, int pos) {
+        String[] tokens = text.split(",");
+        return Integer.parseInt(tokens[pos]);
+    }
+
+    /*
+     * 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.nextLine();
+    }
+
+    /**
+     * Return a string of x spaces
+     *
+     * @param spaces number of spaces required
+     * @return String with number of spaces
+     */
+    private String addSpaces(int spaces) {
+        char[] spacesTemp = new char[spaces];
+        Arrays.fill(spacesTemp, ' ');
+        return new String(spacesTemp);
+    }
+
+    public static void main(String[] args) {
+
+        Mugwump mugwump = new Mugwump();
+        mugwump.play();
+    }
+}