From afeed6b2580500dabe862ec551bc90c32c4efef7 Mon Sep 17 00:00:00 2001
From: ragnarok-clanker <ragnarok-clanker>
Date: Fri, 30 Oct 2026 18:23:06 +0000
Subject: [PATCH] Decompile 3 functions in
 Source/Contents/World/WorldObjects.cpp,
 Source/Contents/World/WorldProximity.cpp, ...

Batch #5981 by eAthena: 0 byte-identical, 3 confirmed by peer review.

- fn_17679 CWorld::IsGuildMaster: logic confirmed by peer review
- fn_17693 CWorld::RemoveGroundItem: logic confirmed by peer review
- fn_17697 CWorld::RemoveSkill: logic confirmed by peer review

Peer-reviewed-by: ragnarok-clanker, superintelligence, SapitoSucio, tayoba, Snow, Yommy, willerthal
Accepted without human review: peers confirmed the logic ("same" ahead by at least 3, with 70% of the votes).
---
 Source/Contents/World/World.h            |  3 ++
 Source/Contents/World/WorldObjects.cpp   | 56 ++++++++++++++++++++++++
 Source/Contents/World/WorldProximity.cpp | 17 +++++++
 3 files changed, 76 insertions(+)

diff --git a/Source/Contents/World/World.h b/Source/Contents/World/World.h
index 8d0599fa..1617c75f 100644
--- a/Source/Contents/World/World.h
+++ b/Source/Contents/World/World.h
@@ -38,6 +38,9 @@ public:
   void RemovePcPos(std::uint32_t aid, bool notify);
   void RemovePcPosForMove(std::uint32_t aid, bool notify);
   void ClearActorCells();
+  bool IsGuildMaster(std::uint32_t aid);
+  bool RemoveGroundItem(std::uint32_t aid);
+  bool RemoveSkill(std::uint32_t aid);
   void PlayerMove(const float& x, const float& z);
   void PcApproachToPlayer(std::uint32_t accountId, const CellFloatPos& pos);
 
diff --git a/Source/Contents/World/WorldObjects.cpp b/Source/Contents/World/WorldObjects.cpp
index 41936658..22ea78fb 100644
--- a/Source/Contents/World/WorldObjects.cpp
+++ b/Source/Contents/World/WorldObjects.cpp
@@ -307,3 +307,59 @@ void CGameMode::SpawnMandraAttack(std::uint32_t aid, int target, char flag) {
     effect->SendMsg(nullptr, 14, 0, aid, 0, reinterpret_cast<int>(&flag), reinterpret_cast<int>(&flag) >> 31, target, target >> 31, 0, 0, 0, 0, 0, 0);
   }
 }
+
+// OFFSET: 0x00ACA540
+// FUNCTION: fn_17693
+bool CWorld::RemoveGroundItem(std::uint32_t aid) {
+  for (auto item = this->unknown_0018.begin(); item != this->unknown_0018.end(); ++item) {
+    CRenderObject* object = *item;
+
+    if (static_cast<CItem*>(object)->itemAid == aid) {
+      for (auto entry = this->objects.begin(); entry != this->objects.end(); ++entry) {
+        if (*entry == object) {
+          delete object;
+          this->objects.erase(entry);
+          break;
+        }
+      }
+
+      this->unknown_0018.erase(item);
+      return true;
+    }
+  }
+
+  return false;
+}
+
+// OFFSET: 0x00ACA8A0
+// FUNCTION: fn_17697
+bool CWorld::RemoveSkill(std::uint32_t aid) {
+  for (auto entry = this->unknown_0020.begin(); entry != this->unknown_0020.end(); ++entry) {
+    CSkill* skill = static_cast<CSkill*>(*entry);
+
+    if (skill->skillAid == aid) {
+      if (!skill) {
+        return false;
+      }
+
+      skill->SendMsg(nullptr, 53, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
+
+      if (skill->HasPendingDamage() == true) {
+        for (std::uint32_t pending : this->pendingActorIds) {
+          if (pending == aid) {
+            return false;
+          }
+        }
+
+        this->pendingActorIds.push_back(aid);
+        return false;
+      }
+
+      reinterpret_cast<WorldObjects*>(this)->Remove(skill);
+      this->unknown_0020.erase(entry);
+      return true;
+    }
+  }
+
+  return false;
+}
diff --git a/Source/Contents/World/WorldProximity.cpp b/Source/Contents/World/WorldProximity.cpp
index bb3a44fd..4b2e7e8a 100644
--- a/Source/Contents/World/WorldProximity.cpp
+++ b/Source/Contents/World/WorldProximity.cpp
@@ -91,6 +91,23 @@ bool CWorld::FindActorInCell(const float* position, std::function<bool(std::uint
   return std::find_if(ids.begin(), ids.end(), predicate) != ids.end();
 }
 
+// OFFSET: 0x00AC8BA0
+// FUNCTION: fn_17679
+bool CWorld::IsGuildMaster(std::uint32_t aid) {
+  for (CRenderObject* actor : this->actors) {
+    if (actor->render.accountId == aid) {
+      CGameActor* gameActor = static_cast<CGameActor*>(actor);
+      if (!gameActor) {
+        return false;
+      }
+
+      return gameActor->Slot42() == static_cast<int>(g_proximityCompareId);
+    }
+  }
+
+  return false;
+}
+
 // OFFSET: 0x00ACA180
 // FUNCTION: fn_17689
 void CWorld::ClearActorCells() {