diff --git a/server/gameserver/creature.cc b/server/gameserver/creature.cc
index 4bfb03cd..61c4acb7 100644
--- a/server/gameserver/creature.cc
+++ b/server/gameserver/creature.cc
@@ -1411,10 +1411,10 @@ void Creature::CheckSpecObject()
     room->map_service->GetSpecColliders(SPEC_MAP_OBJECT_FLAGS, room, GetPos().x, GetPos().y, colliders);
 
     #ifdef DEBUG
-    long long old_cell_flags = cell_flags_;
     int water_w = 0;
     int water_h = 0;
     #endif
+    long long old_cell_flags = cell_flags_;
     cell_flags_ = 0;
     for (const ColliderComponent* collider : colliders) {
         switch (collider->owner->GetEntityType()) {
@@ -1436,6 +1436,32 @@ void Creature::CheckSpecObject()
             break;
         }
     }
+    if (old_cell_flags != cell_flags_) {
+        if (!a8::SameBitFlag(old_cell_flags, cell_flags_, kColliderTag_Grass)) {
+            if (a8::HasBitFlag(cell_flags_, kColliderTag_Grass)) {
+                TryAddBuff(this, kInGrassBuffId);
+            } else {
+                RemoveBuffById(kInGrassBuffId);
+            }
+        }
+
+        if (!a8::SameBitFlag(old_cell_flags, cell_flags_, kColliderTag_Water)) {
+            if (a8::HasBitFlag(cell_flags_, kColliderTag_Water)) {
+                TryAddBuff(this, kInWaterBuffId);
+            } else {
+                RemoveBuffById(kInWaterBuffId);
+            }
+        }
+
+        if (!a8::SameBitFlag(old_cell_flags, cell_flags_, kColliderTag_Ice)) {
+            if (a8::HasBitFlag(cell_flags_, kColliderTag_Ice)) {
+                TryAddBuff(this, kInIceBuffId);
+            } else {
+                RemoveBuffById(kInIceBuffId);
+            }
+        }
+
+    }
     #ifdef DEBUG
     if (IsPlayer()) {
         if (old_cell_flags != cell_flags_) {
diff --git a/third_party/a8engine b/third_party/a8engine
index f32b842b..41cb09fe 160000
--- a/third_party/a8engine
+++ b/third_party/a8engine
@@ -1 +1 @@
-Subproject commit f32b842baf3c97def6871a831dd4509842d461ea
+Subproject commit 41cb09fe83abc21db2e912117d11feceb4b00a55