Fixed bug that led to endless loop in nearest_enemy_dir().

[plomrogue] / src / yx_uint16.h

diff --git a/src/yx_uint16.h b/src/yx_uint16.h
index e5249b0ab3ca4e69685fc7a845209fb963af9760..f6f90a372dca46c8af4b63a17dcd1e4e3f37bcb6 100644 (file)
--- a/src/yx_uint16.h
+++ b/src/yx_uint16.h
@@ -7,8 +7,6 @@
 #ifndef YX_UINT16_H
 #define YX_UINT16_H
 
-
-
 #include <stdint.h> /* for uint8_t, uint16_t */
 
 
@@ -20,19 +18,17 @@ struct yx_uint16
     uint16_t x;
 };
 
-/* Directions available for movement. */
-enum dir
-{
-    NORTH = 1,
-    EAST,
-    SOUTH,
-    WEST
-};
+
 
 /* Return 1 if two yx_uint16 coordinates at "a" and "b" are equal, else 0. */
 extern uint8_t yx_uint16_cmp(struct yx_uint16 * a, struct yx_uint16 * b);
 
-/* Return yx_uint16 coordinate one step from coordinate yx in direction dir. */
-extern struct yx_uint16 mv_yx_in_dir(enum dir d, struct yx_uint16 yx);
+/* Return yx_uint16 coordinate one step from "yx" in direction "dir" (east: 'E',
+ * west: 'W', north: 'N', south: 'S'). If "dir" is invalid or would wrap the
+ * move around the edge of a 2^16x2^16 cells field, "yx" remains unchanged.
+ */
+extern struct yx_uint16 mv_yx_in_dir(char dir, struct yx_uint16 yx);
+
+
 
 #endif