X-Git-Url: https://plomlompom.com/repos/?a=blobdiff_plain;f=src%2Fyx_uint16.c;h=2d7503ba904381c87136e1df8b3f288fdf0e622b;hb=dd29efee173dfad19a4ea5fa16f35aabb17c4642;hp=afcab4db7a17d064a1faa36890576845bbd572b3;hpb=64e1bc2a874308530b7b45c33ed5d37f34f5f8be;p=plomrogue

diff --git a/src/yx_uint16.c b/src/yx_uint16.c
index afcab4d..2d7503b 100644
--- a/src/yx_uint16.c
+++ b/src/yx_uint16.c
@@ -1,8 +1,30 @@
-#include "stdint.h"
-#include "yx_uint16.h"
+/* yx_uint16.c */
 
-extern char yx_uint16_cmp (struct yx_uint16 a, struct yx_uint16 b) {
-// Compare two coordinates of type yx_uint16.
-  if (a.y == b.y && a.x == b.x) return 1;
-  else                          return 0; }
 
+
+#include "yx_uint16.h" /* for uint16_t */
+
+
+
+extern char yx_uint16_cmp(struct yx_uint16 a, struct yx_uint16 b)
+{
+    if (a.y == b.y && a.x == b.x)
+        return 1;
+    else
+        return 0;
+}
+
+
+
+extern struct yx_uint16 mv_yx_in_dir(enum dir d, struct yx_uint16 yx)
+{
+    if      (d == NORTH)
+        yx.y--;
+    else if (d == EAST)
+        yx.x++;
+    else if (d == SOUTH)
+        yx.y++;
+    else if (d == WEST)
+        yx.x--;
+    return yx;
+}