6 files changed, 35 insertions, 34 deletions

diff --git a/src/server/luaentity_sao.cpp b/src/server/luaentity_sao.cpp
index c7277491a..3bcbe107b 100644
--- a/src/server/luaentity_sao.cpp
+++ b/src/server/luaentity_sao.cpp
@@ -146,15 +146,11 @@ void LuaEntitySAO::step(float dtime, bool send_recommended)
 
 	// Each frame, parent position is copied if the object is attached, otherwise it's calculated normally
 	// If the object gets detached this comes into effect automatically from the last known origin
-	if(isAttached())
-	{
-		v3f pos = m_env->getActiveObject(m_attachment_parent_id)->getBasePosition();
-		m_base_position = pos;
+	if (auto *parent = getParent()) {
+		m_base_position = parent->getBasePosition();
 		m_velocity = v3f(0,0,0);
 		m_acceleration = v3f(0,0,0);
-	}
-	else
-	{
+	} else {
 		if(m_prop.physical){
 			aabb3f box = m_prop.collisionbox;
 			box.MinEdge *= BS;
@@ -492,6 +488,9 @@ void LuaEntitySAO::sendPosition(bool do_interpolate, bool is_movement_end)
 	if(isAttached())
 		return;
 
+	// Send attachment updates instantly to the client prior updating position
+	sendOutdatedData();
+
 	m_last_sent_move_precision = m_base_position.getDistanceFrom(
 			m_last_sent_position);
 	m_last_sent_position_timer = 0;
diff --git a/src/server/mods.cpp b/src/server/mods.cpp
index cf1467648..83fa12da9 100644
--- a/src/server/mods.cpp
+++ b/src/server/mods.cpp
@@ -98,7 +98,8 @@ void ServerModManager::getModNames(std::vector<std::string> &modlist) const
 
 void ServerModManager::getModsMediaPaths(std::vector<std::string> &paths) const
 {
-	for (const ModSpec &spec : m_sorted_mods) {
+	for (auto it = m_sorted_mods.crbegin(); it != m_sorted_mods.crend(); it++) {
+		const ModSpec &spec = *it;
 		fs::GetRecursiveDirs(paths, spec.path + DIR_DELIM + "textures");
 		fs::GetRecursiveDirs(paths, spec.path + DIR_DELIM + "sounds");
 		fs::GetRecursiveDirs(paths, spec.path + DIR_DELIM + "media");
diff --git a/src/server/mods.h b/src/server/mods.h
index 54774bd86..8954bbf72 100644
--- a/src/server/mods.h
+++ b/src/server/mods.h
@@ -42,5 +42,13 @@ public:
 	void loadMods(ServerScripting *script);
 	const ModSpec *getModSpec(const std::string &modname) const;
 	void getModNames(std::vector<std::string> &modlist) const;
+	/**
+	 * Recursively gets all paths of mod folders that can contain media files.
+	 *
+	 * Result is ordered in descending priority, ie. files from an earlier path
+	 * should not be replaced by files from a latter one.
+	 *
+	 * @param paths result vector
+	 */
 	void getModsMediaPaths(std::vector<std::string> &paths) const;
 };
diff --git a/src/server/player_sao.cpp b/src/server/player_sao.cpp
index 110d2010d..0d31f2e0b 100644
--- a/src/server/player_sao.cpp
+++ b/src/server/player_sao.cpp
@@ -260,10 +260,13 @@ void PlayerSAO::step(float dtime, bool send_recommended)
 	// otherwise it's calculated normally.
 	// If the object gets detached this comes into effect automatically from
 	// the last known origin.
-	if (isAttached()) {
-		v3f pos = m_env->getActiveObject(m_attachment_parent_id)->getBasePosition();
+	if (auto *parent = getParent()) {
+		v3f pos = parent->getBasePosition();
 		m_last_good_position = pos;
 		setBasePosition(pos);
+
+		if (m_player)
+			m_player->setSpeed(v3f());
 	}
 
 	if (!send_recommended)
@@ -570,34 +573,11 @@ void PlayerSAO::setMaxSpeedOverride(const v3f &vel)
 bool PlayerSAO::checkMovementCheat()
 {
 	if (m_is_singleplayer ||
+			isAttached() ||
 			g_settings->getBool("disable_anticheat")) {
 		m_last_good_position = m_base_position;
 		return false;
 	}
-	if (UnitSAO *parent = dynamic_cast<UnitSAO *>(getParent())) {
-		v3f attachment_pos;
-		{
-			int parent_id;
-			std::string bone;
-			v3f attachment_rot;
-			bool force_visible;
-			getAttachment(&parent_id, &bone, &attachment_pos, &attachment_rot, &force_visible);
-		}
-
-		v3f parent_pos = parent->getBasePosition();
-		f32 diff = m_base_position.getDistanceFromSQ(parent_pos) - attachment_pos.getLengthSQ();
-		const f32 maxdiff = 4.0f * BS; // fair trade-off value for various latencies
-
-		if (diff > maxdiff * maxdiff) {
-			setBasePosition(parent_pos);
-			actionstream << "Server: " << m_player->getName()
-					<< " moved away from parent; diff=" << sqrtf(diff) / BS
-					<< " resetting position." << std::endl;
-			return true;
-		}
-		// Player movement is locked to the entity. Skip further checks
-		return false;
-	}
 
 	bool cheated = false;
 	/*
diff --git a/src/server/serverinventorymgr.cpp b/src/server/serverinventorymgr.cpp
index 555e01ec6..2a80c9bbe 100644
--- a/src/server/serverinventorymgr.cpp
+++ b/src/server/serverinventorymgr.cpp
@@ -168,6 +168,18 @@ bool ServerInventoryManager::removeDetachedInventory(const std::string &name)
 	return true;
 }
 
+bool ServerInventoryManager::checkDetachedInventoryAccess(
+		const InventoryLocation &loc, const std::string &player) const
+{
+	SANITY_CHECK(loc.type == InventoryLocation::DETACHED);
+
+	const auto &inv_it = m_detached_inventories.find(loc.name);
+	if (inv_it == m_detached_inventories.end())
+		return false;
+
+	return inv_it->second.owner.empty() || inv_it->second.owner == player;
+}
+
 void ServerInventoryManager::sendDetachedInventories(const std::string &peer_name,
 		bool incremental,
 		std::function<void(const std::string &, Inventory *)> apply_cb)
diff --git a/src/server/serverinventorymgr.h b/src/server/serverinventorymgr.h
index ccf6d3b2e..0e4b72415 100644
--- a/src/server/serverinventorymgr.h
+++ b/src/server/serverinventorymgr.h
@@ -43,6 +43,7 @@ public:
 	Inventory *createDetachedInventory(const std::string &name, IItemDefManager *idef,
 			const std::string &player = "");
 	bool removeDetachedInventory(const std::string &name);
+	bool checkDetachedInventoryAccess(const InventoryLocation &loc, const std::string &player) const;
 
 	void sendDetachedInventories(const std::string &peer_name, bool incremental,
 			std::function<void(const std::string &, Inventory *)> apply_cb);