From b657873488eb5b74a8c0fcfa164280cb4e2704cc Mon Sep 17 00:00:00 2001
From: Enno Rehling <enno.rehling@gmail.com>
Date: Wed, 12 Aug 2020 01:22:07 +0200
Subject: [PATCH] let swimming and flying units follow a ship

---
 src/move.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/src/move.c b/src/move.c
index a92f52a96..173aa709d 100644
--- a/src/move.c
+++ b/src/move.c
@@ -2233,15 +2233,17 @@ int follow_ship(unit * u, order * ord)
     if (fval(u, UFL_NOTMOVING)) {
         return 0;
     }
-    else if (!u->ship) {
-        cmistake(u, ord, 144, MSG_MOVE);
-        return 0;
+    if (!fval(u_race(u), RCF_FLY|RCF_SWIM)) {
+        if (!u->ship) {
+            cmistake(u, ord, 144, MSG_MOVE);
+            return 0;
+        }
     }
-    else if (u != ship_owner(u->ship)) {
+    else if (u->ship && u != ship_owner(u->ship)) {
         cmistake(u, ord, 146, MSG_MOVE);
         return 0;
     }
-    else if (!can_move(u)) {
+    if (!can_move(u)) {
         cmistake(u, ord, 55, MSG_MOVE);
         return 0;
     }