X-Git-Url: https://git.cworth.org/git?p=mnemon;a=blobdiff_plain;f=mnemon.c;h=4c5acd26287ce381e13a25efa86c81eb800536da;hp=fd7b9bf15b4ce7da6b6772420cfeea79e4028a39;hb=d23b1556222ac75ac486f187b20e8022ddb5dc30;hpb=ce8d39d4b7bd3cc650ea85636dfde4dad56903cf

diff --git a/mnemon.c b/mnemon.c
index fd7b9bf..4c5acd2 100644
--- a/mnemon.c
+++ b/mnemon.c
@@ -25,6 +25,7 @@
 #include <math.h>
 
 #include <sys/types.h>
+#include <sys/time.h>
 #include <dirent.h>
 #include <errno.h>
 #include <string.h>
@@ -61,6 +62,8 @@ typedef struct _category {
 
     /* Support sequential introduction of items from bin 0 */
     category_order_t order;
+    /* Support categories where responses are timed (0.0 == disable). */
+    double time_limit;
     int bin_zero_head;
 } category_t;
 
@@ -187,6 +190,7 @@ category_init (category_t *category,
     category->num_items = 0;
     category->items = NULL;
     category->order = CATEGORY_ORDER_RANDOM;
+    category->time_limit = 0.0;
     category->bin_zero_head = 0;
 }
 
@@ -254,6 +258,8 @@ category_print (category_t	*category,
 
     fprintf (file, "order = %s\n\n",
 	    category->order == CATEGORY_ORDER_RANDOM ? "random" : "sequential");
+    fprintf (file, "time = %f\n\n",
+	     category->time_limit);
 
     for (i = 0; i < category->num_items; i++) {
 	item = &category->items[i];
@@ -598,6 +604,19 @@ mnemon_load_category (mnemon_t		*mnemon,
 			 value, path, line_count);
 		exit (1);
 	    }
+	} else if (strcmp (name, "time") == 0) {
+	    double limit;
+	    char *end;
+	    limit = strtod (value, &end);
+	    while (isspace (*end))
+		end++;
+	    if (*end == '\0') {
+		category->time_limit = limit;
+	    } else {
+		fprintf (stderr, "Failed to parse time value: %s at %s:%d\n",
+			 value, path, line_count);
+		exit (1);
+	    }
 	} else {
 	    fprintf (stderr, "Unknown option %s at %s:%d\n",
 		     name, path, line_count);
@@ -835,10 +854,13 @@ mnemon_item_in_category_of_length (void *closure, item_t *item)
 static void
 mnemon_select_item (mnemon_t	 *mnemon,
 		    bin_t	**bin_ret,
-		    int		 *item_index_ret)
+		    int		 *item_index_ret,
+		    category_t	**category_ret)
 {
     int bin_index, item_index;
     bin_t *bin;
+    item_t *item;
+    category_t *category;
 
     bin_index = rand_within_exponential (mnemon->num_bins);
 
@@ -846,14 +868,10 @@ mnemon_select_item (mnemon_t	 *mnemon,
 
     item_index = rand_within (bin->num_items);
 
-    if (bin->score == 0) {
-	category_t *category;
-	item_t *item;
-
-	item = bin->items[item_index];
-
-	category = mnemon_item_category (mnemon, item);
+    item = bin->items[item_index];
+    category = mnemon_item_category (mnemon, item);
 
+    if (bin->score == 0) {
 	if (category->order == CATEGORY_ORDER_SEQUENTIAL) {
 	    item = category_next_bin_zero_item (category);
 	    if (item)
@@ -863,6 +881,7 @@ mnemon_select_item (mnemon_t	 *mnemon,
 
     *bin_ret = bin;
     *item_index_ret = item_index;
+    *category_ret = category;
 }
 
 
@@ -997,7 +1016,9 @@ mnemon_handle_response (mnemon_t	*mnemon,
 			bin_t		*bin,
 			int		 item_index,
 			item_t		*item,
-			const char	*response)
+			const char	*response,
+			double		 response_time,
+			double		 time_limit)
 {
     bool_t correct;
 
@@ -1014,7 +1035,9 @@ mnemon_handle_response (mnemon_t	*mnemon,
 	mnemon_remove_bin (mnemon, bin);
     }
 
-    if (correct) {
+    if (correct &&
+	(time_limit == 0.0 || response_time < time_limit))
+    {
 	item->score++;
 	mnemon->to_master--;
 	/* We reserve an item score of 0 for an item that has
@@ -1033,8 +1056,12 @@ mnemon_handle_response (mnemon_t	*mnemon,
 	    printf ("Masterful (%dx).", item->score);
 	}
     } else {
-	printf ("  %s is the correct answer.",
-		item->response);
+	if (! correct)
+	    printf ("  %s is the correct answer.",
+		    item->response);
+	else
+	    printf ("Correct, but not quite quick enough (%0.2f seconds---needed %0.2f seconds)\n",
+		    response_time, time_limit);
 	/* Penalize an incorrect response by forcing the score
 	 * negative. */
 	if (item->score >= 0) {
@@ -1079,6 +1106,7 @@ mnemon_do_challenges (mnemon_t *mnemon)
     bin_t *bin;
     int item_index;
     item_t *item;
+    category_t *category;
     char *response;
     int i;
 
@@ -1113,16 +1141,25 @@ mnemon_do_challenges (mnemon_t *mnemon)
     printf ("\n");
 
     do {
-	mnemon_select_item (mnemon, &bin, &item_index);
+	struct timeval start, end;
+	
+	mnemon_select_item (mnemon, &bin, &item_index, &category);
 	item = bin->items[item_index];
 
 	if (bin->score == 0)
 	    mnemon->to_introduce--;
 
 	while (1) {
+	    if (category->time_limit > 0.0) {
+		readline ("The next one is timed. Press enter when ready:");
+	    }
+		
 	    printf ("%s\n", item->challenge);
 
+	    gettimeofday (&start, NULL);
 	    response = readline ("> ");
+	    gettimeofday (&end, NULL);
+
 	    /* Terminate on EOF */
 	    if (response == NULL) {
 		printf ("\n");
@@ -1136,7 +1173,10 @@ mnemon_do_challenges (mnemon_t *mnemon)
 	}
 
 	mnemon_handle_response (mnemon, bin, item_index,
-				item, response);
+				item, response,
+				(end.tv_sec + end.tv_usec / 1e6) -
+				(start.tv_sec + start.tv_usec / 1e6),
+				category->time_limit);
     } while (mnemon->to_introduce ||
 	     mnemon->unlearned ||
 	     mnemon->to_master > 0);