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

[plomrogue] / src / yx_uint16.c

diff --git a/src/yx_uint16.c b/src/yx_uint16.c
index 2d7503ba904381c87136e1df8b3f288fdf0e622b..c980693b998bf3156ea70e1f3f5a8df8fc36402b 100644 (file)
--- a/src/yx_uint16.c
+++ b/src/yx_uint16.c
@@ -1,30 +1,38 @@
 /* yx_uint16.c */
 
+#include "yx_uint16.h"
+#include <stdint.h> /* for uint8_t, uint16_t */
 
 
-#include "yx_uint16.h" /* for uint16_t */
 
-
-
-extern char yx_uint16_cmp(struct yx_uint16 a, struct yx_uint16 b)
+extern uint8_t yx_uint16_cmp(struct yx_uint16 * a, struct yx_uint16 * b)
 {
-    if (a.y == b.y && a.x == b.x)
+    if (a->y == b->y && a->x == b->x)
+    {
         return 1;
-    else
-        return 0;
+    }
+    return 0;
 }
 
 
 
-extern struct yx_uint16 mv_yx_in_dir(enum dir d, struct yx_uint16 yx)
+extern struct yx_uint16 mv_yx_in_dir(char d, struct yx_uint16 yx)
 {
-    if      (d == NORTH)
+    if      (d == 'N' && yx.y > 0)
+    {
         yx.y--;
-    else if (d == EAST)
+    }
+    else if (d == 'E' && yx.x < UINT16_MAX)
+    {
         yx.x++;
-    else if (d == SOUTH)
+    }
+    else if (d == 'S' && yx.y < UINT16_MAX)
+    {
         yx.y++;
-    else if (d == WEST)
+    }
+    else if (d == 'W' && yx.x > 0)
+    {
         yx.x--;
+    }
     return yx;
 }