Robustness in the face of a completely configurable expansion factor.

[sgt/puzzles] / fifteen.c

diff --git a/fifteen.c b/fifteen.c
index 78060f5..1476513 100644 (file)
--- a/fifteen.c
+++ b/fifteen.c
@@ -6,11 +6,13 @@
 #include <stdlib.h>
 #include <string.h>
 #include <assert.h>
+#include <ctype.h>
 #include <math.h>
 
 #include "puzzles.h"
 
 const char *const game_name = "Fifteen";
+const char *const game_winhelp_topic = "games.fifteen";
 const int game_can_configure = TRUE;
 
 #define TILE_SIZE 48
@@ -72,6 +74,29 @@ game_params *dup_params(game_params *params)
     return ret;
 }
 
+game_params *decode_params(char const *string)
+{
+    game_params *ret = default_params();
+
+    ret->w = ret->h = atoi(string);
+    while (*string && isdigit(*string)) string++;
+    if (*string == 'x') {
+        string++;
+        ret->h = atoi(string);
+    }
+
+    return ret;
+}
+
+char *encode_params(game_params *params)
+{
+    char data[256];
+
+    sprintf(data, "%dx%d", params->w, params->h);
+
+    return dupstr(data);
+}
+
 config_item *game_configure(game_params *params)
 {
     config_item *ret;