From: Christian Heller <c.heller@plomlompom.de>
Date: Sat, 20 Jul 2013 03:20:57 +0000 (+0200)
Subject: Use enum instead of define for directions in yx_uint16 library.
X-Git-Tag: tce~1145
X-Git-Url: https://plomlompom.com/repos/%7B%7Bprefix%7D%7D/static/%7B%7Byoutube_prefix%7D%7D%7B%7Bvideo_id%7D%7D?a=commitdiff_plain;h=a037841b38d73f59839731eb3ffaf4edc43d9cf0;p=plomrogue

Use enum instead of define for directions in yx_uint16 library.
---

diff --git a/src/map_object_actions.c b/src/map_object_actions.c
index b016c0c..c9bdea3 100644
--- a/src/map_object_actions.c
+++ b/src/map_object_actions.c
@@ -43,7 +43,7 @@ extern void move_monster (struct World * world, struct Monster * monster) {
   if (is_passable(world->map, t))
     monster->map_obj.pos = t; }
 
-extern void move_player (struct World * world, char d) {
+extern void move_player (struct World * world, enum dir d) {
 // Move player in direction d, update log and turn over to the enemy.
   struct yx_uint16 t = mv_yx_in_dir (d, world->player->pos);
   struct Monster * monster;
diff --git a/src/map_object_actions.h b/src/map_object_actions.h
index d67e8bb..2202b27 100644
--- a/src/map_object_actions.h
+++ b/src/map_object_actions.h
@@ -9,7 +9,7 @@ struct Monster;
 
 extern char is_passable (struct Map *, struct yx_uint16);
 extern void move_monster (struct World *, struct Monster *);
-extern void move_player (struct World *, char);
+extern void move_player (struct World *, enum dir);
 extern void player_wait(struct World *);
 
 #endif
diff --git a/src/yx_uint16.c b/src/yx_uint16.c
index 55c832b..a0b8940 100644
--- a/src/yx_uint16.c
+++ b/src/yx_uint16.c
@@ -5,7 +5,7 @@ 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) {
+extern struct yx_uint16 mv_yx_in_dir (enum dir 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++;
diff --git a/src/yx_uint16.h b/src/yx_uint16.h
index 4751b68..3a13f01 100644
--- a/src/yx_uint16.h
+++ b/src/yx_uint16.h
@@ -3,16 +3,17 @@
 
 #include <stdint.h>
 
-#define NORTH 1
-#define EAST 2
-#define SOUTH 3
-#define WEST 4
+enum dir {
+  NORTH = 1,
+  EAST  = 2,
+  SOUTH = 3,
+  WEST  = 4 };
 
 struct yx_uint16 {
   uint16_t y;
   uint16_t x; };
 
 extern char yx_uint16_cmp (struct yx_uint16, struct yx_uint16);
-extern struct yx_uint16 mv_yx_in_dir (char, struct yx_uint16);
+extern struct yx_uint16 mv_yx_in_dir (enum dir, struct yx_uint16);
 
 #endif