X-Git-Url: https://plomlompom.com/repos/berlin_corona.txt?a=blobdiff_plain;f=src%2Fyx_uint16.c;h=55c832bd7772711cb271c38c60280edb8cc747e9;hb=e4f2a14c7385d99d49cf831cd3fd92234caf71b5;hp=afcab4db7a17d064a1faa36890576845bbd572b3;hpb=64e1bc2a874308530b7b45c33ed5d37f34f5f8be;p=plomrogue

diff --git a/src/yx_uint16.c b/src/yx_uint16.c
index afcab4d..55c832b 100644
--- a/src/yx_uint16.c
+++ b/src/yx_uint16.c
@@ -1,4 +1,3 @@
-#include "stdint.h"
 #include "yx_uint16.h"
 
 extern char yx_uint16_cmp (struct yx_uint16 a, struct yx_uint16 b) {
@@ -6,3 +5,11 @@ 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 (char d, struct yx_uint16 yx) {
+// Return yx coordinates one step to the direction d of 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; }
+