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src/bogglemain.cpp

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+/*
+ * TDDD86 Boggle
+ * This file contains the main program and user interface for running your
+ * Boggle game.  We provide you a skeleton of this file that contains a shell
+ * of the overall logic, but you must complete the playOneGame function.
+ *
+ * The playOneGame function talks to the Boggle class that you will write.
+ * This file should contain all user interaction (cout / cin), while the Boggle
+ * class should contain ALL game state such as the 16 letter cubes, the set of
+ * words that have been formed, the algorithms for searching for words, etc.
+ *
+ * Please do not modify this provided file. Your turned-in files should work
+ * with an unmodified version of all provided code files.
+ */
+
+#include <fstream>
+#include <iostream>
+#include <string>
+#include "random.h"
+#include "strlib.h"
+#include "Boggle.h"
+#include "bogglemain.h"
+
+using namespace std;
+
+int main() {
+    intro();
+
+    // play games repeatedly until user decides to quit
+    Boggle boggle;
+    while (true) {
+        playOneGame(boggle);
+        cout << endl;
+        if (!yesOrNo("Play again (Y/N)? ")) {
+            break;
+        }
+    }
+
+    cout << "Have a nice day." << endl;
+    return 0;
+}
+
+/*
+ * Explains the program to the user.
+ */
+void intro() {
+    cout << "Welcome to TDDD86 Boggle!" << endl;
+    cout << "This game is a search for words on a 2-D board of letter cubes." << endl;
+    cout << "The good news is that you might improve your vocabulary a bit." << endl;
+    cout << "The bad news is that you're probably going to lose miserably to" << endl;
+    cout << "this little dictionary-toting hunk of silicon." << endl;
+    cout << "If only YOU had a gig of RAM!" << endl;
+    cout << endl;
+    cout << "Press Enter to begin the game ... ";
+    string line;
+    getline(cin, line);
+}
+
+/*
+ * Prompts the user to answer a yes/no question and returns true if the user
+ * typed 'yes' (or anything that starts with a 'y', case-insensitively),
+ * false if the user types anything that starts with 'n', or re-prompts if
+ * the user doesn't type a 'y' or 'n' word.
+ */
+bool yesOrNo(string prompt) {
+    cout << prompt;
+    while (true) {
+        string answer;
+        getline(cin, answer);
+        answer = trim(toLowerCase(answer));
+        if (startsWith(answer, 'y')) {
+            return true;
+        } else if (startsWith(answer, 'n')) {
+            return false;
+        } else {
+            cout << "Please type a word that begins with 'y' or 'n'." << endl;
+        }
+    }
+}