Added getopt; added help screen #4

hangman.c

@@ -3,8 +3,23 @@
 #include <stdlib.h> //atexit
 #include <string.h>
 #include <ctype.h> //tolower
+#include <getopt.h>
+
+
+int main(int argc, char **argv) {
+  
+    const char *short_options = "w:hf:c";
+    struct option long_options[] = {
+        {"word", required_argument, NULL, 'w'},
+        {"help", no_argument, NULL, 'h'},
+        {"file", required_argument, NULL, 'f'},
+        {"credits", no_argument, NULL, 'c'}
+    };  
+    int c, startscr = 1; /* Show startscreen by default */
+    char *filename;
+
+    //while ( (c = getopt_long(argc, argv, short_options, long_options, NULL)) != -1 ) 
     
-int main(void) {
     /* Initialization */
     initscr();
     atexit(quitProgram);
@@ -15,22 +30,57 @@ int main(void) {
     gs->moves = 0;
     gs->guesses = 0;
     
-    /* Show the start screen */
+    
     curs_set(0); 
+    while ( (c = getopt_long(argc, argv, short_options, long_options, NULL)) != -1 ) {
+        switch (c) {
+        case 'w':
+            sprintf(gs->guessWord, "%s", optarg);
+            startscr = 0;
+            break;
+        case 'h':
+            showHelp(gs);
+            exit(0);
+            break;
+        case 'f':
+            /* Set filename */
+            filename = optarg;
+            startscr = 0;
+            break;
+        case 'c':
+
+            break;
+        default:
+
+            break;
+        }
+    }
+
+    if (startscr) {
         showStartScreen(gs);
+    }
 
     /* start game */
-    initGuessWord(gs);
+    initGuessWord(gs, filename);
+    
+    startGame(gs);
+    
+
+    getch();
+    free(gs);
+    return 0;
+}
+
+void startGame(game_state *gs) {
     noecho(); /* Don't show the player input */
     while (checkWin(gs)) {
         updateScreen(gs);
         playerInput(gs);
     }
-    getch();
+
-    free(gs);
-    return 0;
 }
 
+
 void quitProgram(void) {
     endwin();
 }
@@ -58,12 +108,14 @@ void initCoordinates(game_state *gs) {
     gs->centerx = gs->maxx / 2;
 }
 
-void initGuessWord(game_state *gs) {
+void initGuessWord(game_state *gs, char *filename) {
     int i;
     mvprintw(1, 1, "Please enter your word: ");
+    if (strlen(gs->guessWord) == 0) { /* Word can be set by arguments */
         curs_set(1);
         getstr(gs->guessWord);
         curs_set(0);
+    }
     toLowerCase(gs->guessWord);
     gs->wordLength = strlen(gs->guessWord);
     for (i = 0; i < gs->wordLength; i++) {
@@ -187,4 +239,15 @@ void printGameStats(game_state *gs) {
     refresh();
 }
         
+void showHelp(game_state *gs) {
+    char *wordstring = "-w or --word: Enter the word or sentence as an argument";
+    char *helpstring = "-h or --help: Show this page";
+    mvprintw(gs->centery, centerDiff(gs->centerx, wordstring), wordstring);
+    mvprintw(gs->centery + 1, centerDiff(gs->centerx, helpstring), helpstring);
+    getch();
+}
 
+int centerDiff(int coordinate, char *str) {
+    int len = strlen(str);
+    return coordinate - (len / 2); /* Integer division */
+}

hangman.h

@@ -26,7 +26,7 @@ typedef struct word {
 void quitProgram(void);
 void updateScreen(game_state *gs);
 void initCoordinates(game_state *gs);
-void initGuessWord(game_state *gs);
+void initGuessWord(game_state *gs, char *filename);
 void drawGuessWord(game_state *gs);
 int playerInput(game_state *gs);
 int fillCurrentWord(game_state *gs, char validchar);
@@ -35,3 +35,6 @@ int checkWin(game_state *gs);
 void printGameStats(game_state *gs); 
 void toLowerCase(char *str);
 void showStartScreen(game_state *gs);
+void startGame(game_state *gs);
+void showHelp(game_state *gs);
+int centerDiff(int coordinate, char *str);