Followers: escorts left behind are teleported to the hero

A follower that fell more than 40 cells behind was removed when its sector
was switched off, and the game ran its death label (the husband of "Die
Sklaven der Orks"). Every 500 ms followers of the local hero that far away
are teleported to him with cCreature::Teleport.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

src/game/engine/orders.h

@@ -97,16 +97,29 @@ inline void AddFollower(void* leader, const FollowerEntry& entry) {
     reinterpret_cast<Fn>(0x0054b070)(leader, nullptr, &entry);
 }
 
-inline bool HasFollower(const void* leader, uint32_t id) {
+// The ids on the leader's follower list.
+template <typename Fn>
+void ForEachFollower(const void* leader, Fn&& fn) {
     const auto* creature = static_cast<const uint8_t*>(leader);
     const auto* begin = *reinterpret_cast<const uint8_t* const*>(creature + kCreatureFollowersBegin);
     const auto* end = *reinterpret_cast<const uint8_t* const*>(creature + kCreatureFollowersEnd);
     for (const uint8_t* entry = begin; entry && entry < end; entry += kFollowerEntrySize) {
-        if (*reinterpret_cast<const uint32_t*>(entry) == id) {
-            return true;
-        }
+        fn(*reinterpret_cast<const uint32_t*>(entry));
     }
-    return false;
+}
+
+inline bool HasFollower(const void* leader, uint32_t id) {
+    bool found = false;
+    ForEachFollower(leader, [&](uint32_t follower) { found = found || follower == id; });
+    return found;
+}
+
+// cCreature::Teleport (0x54d840, thiscall (cell x, cell y, 0, 1), ret 0x10):
+// as the portals move the hero (EE_USEPORTAL 0x6197c3); the game's log line
+// "Teleport (type): <type>, ... (x,y)".
+inline void Teleport(void* creature, int32_t cellX, int32_t cellY) {
+    using Fn = void(__fastcall*)(void*, void*, int32_t, int32_t, int32_t, int32_t);
+    reinterpret_cast<Fn>(0x0054d840)(creature, nullptr, cellX, cellY, 0, 1);
 }
 
 // The walk path (measured 2026-10-18): waypoints {x, y} at +0x2ed + i * 8,