Just for convenience, a docs Makefile, outside the main mkfiles.pl

[sgt/puzzles] / sixteen.c

diff --git a/sixteen.c b/sixteen.c
index cce11d9..1e865c2 100644 (file)
--- a/sixteen.c
+++ b/sixteen.c
@@ -8,11 +8,13 @@
 #include <stdlib.h>
 #include <string.h>
 #include <assert.h>
+#include <ctype.h>
 #include <math.h>
 
 #include "puzzles.h"
 
 const char *const game_name = "Sixteen";
+const char *const game_winhelp_topic = "games.sixteen";
 const int game_can_configure = TRUE;
 
 #define TILE_SIZE 48
@@ -92,6 +94,29 @@ 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;
@@ -373,7 +398,7 @@ game_state *make_move(game_state *from, game_ui *ui, int x, int y, int button)
     int dx, dy, tx, ty, n;
     game_state *ret;
 
-    if (button != LEFT_BUTTON)
+    if (button != LEFT_BUTTON && button != RIGHT_BUTTON)
         return NULL;
 
     cx = FROMCOORD(x);
@@ -389,6 +414,13 @@ game_state *make_move(game_state *from, game_ui *ui, int x, int y, int button)
     else
         return NULL;                   /* invalid click location */
 
+    /* reverse direction if right hand button is pressed */
+    if (button == RIGHT_BUTTON)
+    {
+        dx = -dx; if (dx) cx = from->w - 1 - cx;
+        dy = -dy; if (dy) cy = from->h - 1 - cy;
+    }
+
     ret = dup_game(from);
 
     do {