26 files changed, 1559 insertions, 2256 deletions

diff --git a/src/Bindings/AllToLua.pkg b/src/Bindings/AllToLua.pkg
index 991ed0ddd..6ca9c8658 100644
--- a/src/Bindings/AllToLua.pkg
+++ b/src/Bindings/AllToLua.pkg
@@ -38,7 +38,6 @@ $cfile "LuaFunctions.h"
 $cfile "PluginManager.h"
 $cfile "Plugin.h"
 $cfile "PluginLua.h"
-$cfile "WebPlugin.h"
 $cfile "LuaWindow.h"
 
 $cfile "../BlockID.h"
diff --git a/src/Bindings/CMakeLists.txt b/src/Bindings/CMakeLists.txt
index 10cda1efb..4f25f2cf4 100644
--- a/src/Bindings/CMakeLists.txt
+++ b/src/Bindings/CMakeLists.txt
@@ -23,7 +23,6 @@ SET (SRCS
 	Plugin.cpp
 	PluginLua.cpp
 	PluginManager.cpp
-	WebPlugin.cpp
 )
 
 SET (HDRS
@@ -44,7 +43,6 @@ SET (HDRS
 	Plugin.h
 	PluginLua.h
 	PluginManager.h
-	WebPlugin.h
 	tolua++.h
 )
 
@@ -66,7 +64,6 @@ set(BINDING_DEPENDENCIES
 	../Bindings/Plugin.h
 	../Bindings/PluginLua.h
 	../Bindings/PluginManager.h
-	../Bindings/WebPlugin.h
 	../BiomeDef.h
 	../BlockArea.h
 	../BlockEntities/BeaconEntity.h
diff --git a/src/Bindings/LuaChunkStay.cpp b/src/Bindings/LuaChunkStay.cpp
index d8d7da5d0..145a9ee1b 100644
--- a/src/Bindings/LuaChunkStay.cpp
+++ b/src/Bindings/LuaChunkStay.cpp
@@ -113,12 +113,10 @@ void cLuaChunkStay::AddChunkCoord(cLuaState & L, int a_Index)
 
 
 
-void cLuaChunkStay::Enable(cChunkMap & a_ChunkMap, int a_OnChunkAvailableStackPos, int a_OnAllChunksAvailableStackPos)
+void cLuaChunkStay::Enable(cChunkMap & a_ChunkMap, cLuaState::cCallbackPtr a_OnChunkAvailable, cLuaState::cCallbackPtr a_OnAllChunksAvailable)
 {
-	// Get the references to the callback functions:
-	m_LuaState = &m_Plugin.GetLuaState();
-	m_OnChunkAvailable.RefStack(*m_LuaState, a_OnChunkAvailableStackPos);
-	m_OnAllChunksAvailable.RefStack(*m_LuaState, a_OnAllChunksAvailableStackPos);
+	m_OnChunkAvailable = std::move(a_OnChunkAvailable);
+	m_OnAllChunksAvailable = std::move(a_OnAllChunksAvailable);
 
 	// Enable the ChunkStay:
 	super::Enable(a_ChunkMap);
@@ -130,10 +128,9 @@ void cLuaChunkStay::Enable(cChunkMap & a_ChunkMap, int a_OnChunkAvailableStackPo
 
 void cLuaChunkStay::OnChunkAvailable(int a_ChunkX, int a_ChunkZ)
 {
-	if (m_OnChunkAvailable.IsValid())
+	if (m_OnChunkAvailable != nullptr)
 	{
-		cPluginLua::cOperation Op(m_Plugin);
-		Op().Call(static_cast<int>(m_OnChunkAvailable), a_ChunkX, a_ChunkZ);
+		m_OnChunkAvailable->Call(a_ChunkX, a_ChunkZ);
 	}
 }
 
@@ -143,15 +140,14 @@ void cLuaChunkStay::OnChunkAvailable(int a_ChunkX, int a_ChunkZ)
 
 bool cLuaChunkStay::OnAllChunksAvailable(void)
 {
-	if (m_OnAllChunksAvailable.IsValid())
+	if (m_OnAllChunksAvailable != nullptr)
 	{
 		// Call the callback:
-		cPluginLua::cOperation Op(m_Plugin);
-		Op().Call(static_cast<int>(m_OnAllChunksAvailable));
+		m_OnAllChunksAvailable->Call();
 
 		// Remove the callback references - they won't be needed anymore
-		m_OnChunkAvailable.UnRef();
-		m_OnAllChunksAvailable.UnRef();
+		m_OnChunkAvailable.reset();
+		m_OnAllChunksAvailable.reset();
 	}
 
 	// Disable the ChunkStay by returning true
diff --git a/src/Bindings/LuaChunkStay.h b/src/Bindings/LuaChunkStay.h
index a455d2502..51356d5b7 100644
--- a/src/Bindings/LuaChunkStay.h
+++ b/src/Bindings/LuaChunkStay.h
@@ -39,7 +39,7 @@ public:
 	bool AddChunks(int a_ChunkCoordTableStackPos);
 
 	/** Enables the ChunkStay for the specified chunkmap, with the specified Lua callbacks. */
-	void Enable(cChunkMap & a_ChunkMap, int a_OnChunkAvailableStackPos, int a_OnAllChunksAvailableStackPos);
+	void Enable(cChunkMap & a_ChunkMap, cLuaState::cCallbackPtr a_OnChunkAvailable, cLuaState::cCallbackPtr a_OnAllChunksAvailable);
 
 protected:
 	/** The plugin which has created the ChunkStay, via cWorld:ChunkStay() binding method.  */
@@ -49,10 +49,10 @@ protected:
 	cLuaState * m_LuaState;
 
 	/** The Lua function to call in OnChunkAvailable. Only valid when enabled. */
-	cLuaState::cRef m_OnChunkAvailable;
+	cLuaState::cCallbackPtr m_OnChunkAvailable;
 
 	/** The Lua function to call in OnAllChunksAvailable. Only valid when enabled. */
-	cLuaState::cRef m_OnAllChunksAvailable;
+	cLuaState::cCallbackPtr m_OnAllChunksAvailable;
 
 
 	// cChunkStay overrides:
diff --git a/src/Bindings/LuaNameLookup.cpp b/src/Bindings/LuaNameLookup.cpp
index e52d8dbdc..3cbdbb5cf 100644
--- a/src/Bindings/LuaNameLookup.cpp
+++ b/src/Bindings/LuaNameLookup.cpp
@@ -12,7 +12,7 @@
 
 cLuaNameLookup::cLuaNameLookup(const AString & a_Query, cPluginLua & a_Plugin, int a_CallbacksTableStackPos):
 	m_Plugin(a_Plugin),
-	m_Callbacks(a_Plugin.GetLuaState(), a_CallbacksTableStackPos),
+	m_Callbacks(cPluginLua::cOperation(a_Plugin)(), a_CallbacksTableStackPos),
 	m_Query(a_Query)
 {
 }
diff --git a/src/Bindings/LuaServerHandle.cpp b/src/Bindings/LuaServerHandle.cpp
index a84f894b5..9cc8ad350 100644
--- a/src/Bindings/LuaServerHandle.cpp
+++ b/src/Bindings/LuaServerHandle.cpp
@@ -14,7 +14,7 @@
 
 cLuaServerHandle::cLuaServerHandle(UInt16 a_Port, cPluginLua & a_Plugin, int a_CallbacksTableStackPos):
 	m_Plugin(a_Plugin),
-	m_Callbacks(a_Plugin.GetLuaState(), a_CallbacksTableStackPos),
+	m_Callbacks(cPluginLua::cOperation(a_Plugin)(), a_CallbacksTableStackPos),
 	m_Port(a_Port)
 {
 }
diff --git a/src/Bindings/LuaState.cpp b/src/Bindings/LuaState.cpp
index f11e74e75..5e6c24365 100644
--- a/src/Bindings/LuaState.cpp
+++ b/src/Bindings/LuaState.cpp
@@ -20,6 +20,10 @@ extern "C"
 #include "../Entities/Entity.h"
 #include "../BlockEntities/BlockEntity.h"
 
+
+
+
+
 // fwd: "SQLite/lsqlite3.c"
 extern "C"
 {
@@ -39,6 +43,10 @@ extern "C"
 
 const cLuaState::cRet cLuaState::Return = {};
 
+/** Each Lua state stores a pointer to its creating cLuaState in Lua globals, under this name.
+This way any cLuaState can reference the main cLuaState's TrackedCallbacks, mutex etc. */
+static const char * g_CanonLuaStateGlobalName = "_CuberiteInternal_CanonLuaState";
+
 
 
 
@@ -114,6 +122,135 @@ cLuaStateTracker & cLuaStateTracker::Get(void)
 
 
 ////////////////////////////////////////////////////////////////////////////////
+// cLuaState::cCallback:
+
+cLuaState::cCallback::cCallback(void):
+	m_CS(nullptr)
+{
+}
+
+
+
+
+
+bool cLuaState::cCallback::RefStack(cLuaState & a_LuaState, int a_StackPos)
+{
+	// Check if the stack contains a function:
+	if (!lua_isfunction(a_LuaState, a_StackPos))
+	{
+		return false;
+	}
+
+	// Clear any previous callback:
+	Clear();
+
+	// Add self to LuaState's callback-tracking:
+	auto canonState = a_LuaState.QueryCanonLuaState();
+	canonState->TrackCallback(*this);
+
+	// Store the new callback:
+	m_CS = &(canonState->m_CS);
+	m_Ref.RefStack(*canonState, a_StackPos);
+	return true;
+}
+
+
+
+
+
+void cLuaState::cCallback::Clear(void)
+{
+	// Free the callback reference:
+	lua_State * luaState = nullptr;
+	{
+		auto cs = m_CS;
+		if (cs != nullptr)
+		{
+			cCSLock Lock(*cs);
+			if (!m_Ref.IsValid())
+			{
+				return;
+			}
+			luaState = m_Ref.GetLuaState();
+			m_Ref.UnRef();
+		}
+	}
+
+	// Remove from LuaState's callback-tracking:
+	if (luaState == nullptr)
+	{
+		return;
+	}
+	cLuaState(luaState).UntrackCallback(*this);
+}
+
+
+
+
+
+bool cLuaState::cCallback::IsValid(void)
+{
+	auto cs = m_CS;
+	if (cs == nullptr)
+	{
+		return false;
+	}
+	cCSLock lock(*cs);
+	return m_Ref.IsValid();
+}
+
+
+
+
+
+bool cLuaState::cCallback::IsSameLuaState(cLuaState & a_LuaState)
+{
+	auto cs = m_CS;
+	if (cs == nullptr)
+	{
+		return false;
+	}
+	cCSLock lock(*cs);
+	if (!m_Ref.IsValid())
+	{
+		return false;
+	}
+	auto canonState = a_LuaState.QueryCanonLuaState();
+	if (canonState == nullptr)
+	{
+		return false;
+	}
+	return (m_Ref.GetLuaState() == static_cast<lua_State *>(*canonState));
+}
+
+
+
+
+
+void cLuaState::cCallback::Invalidate(void)
+{
+	auto cs = m_CS;
+	if (cs == nullptr)
+	{
+		// Already invalid
+		return;
+	}
+	cCSLock Lock(*cs);
+	if (!m_Ref.IsValid())
+	{
+		LOGD("%s: Inconsistent callback at %p, has a CS but an invalid Ref. This should not happen",
+			__FUNCTION__, reinterpret_cast<void *>(this)
+		);
+		return;
+	}
+	m_Ref.UnRef();
+}
+
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
 // cLuaState:
 
 cLuaState::cLuaState(const AString & a_SubsystemName) :
@@ -170,6 +307,10 @@ void cLuaState::Create(void)
 	luaL_openlibs(m_LuaState);
 	m_IsOwned = true;
 	cLuaStateTracker::Add(*this);
+
+	// Add the CanonLuaState value into the Lua state, so that we can get it from anywhere:
+	lua_pushlightuserdata(m_LuaState, reinterpret_cast<void *>(this));
+	lua_setglobal(m_LuaState, g_CanonLuaStateGlobalName);
 }
 
 
@@ -206,6 +347,16 @@ void cLuaState::Close(void)
 		Detach();
 		return;
 	}
+
+	// Invalidate all callbacks:
+	{
+		cCSLock Lock(m_CSTrackedCallbacks);
+		for (auto & c: m_TrackedCallbacks)
+		{
+			c->Invalidate();
+		}
+	}
+
 	cLuaStateTracker::Del(*this);
 	lua_close(m_LuaState);
 	m_LuaState = nullptr;
@@ -402,7 +553,7 @@ bool cLuaState::PushFunction(const char * a_FunctionName)
 
 
 
-bool cLuaState::PushFunction(int a_FnRef)
+bool cLuaState::PushFunction(const cRef & a_FnRef)
 {
 	ASSERT(IsValid());
 	ASSERT(m_NumCurrentFunctionArgs == -1);  // If not, there's already something pushed onto the stack
@@ -410,7 +561,7 @@ bool cLuaState::PushFunction(int a_FnRef)
 	// Push the error handler for lua_pcall()
 	lua_pushcfunction(m_LuaState, &ReportFnCallErrors);
 
-	lua_rawgeti(m_LuaState, LUA_REGISTRYINDEX, a_FnRef);  // same as lua_getref()
+	lua_rawgeti(m_LuaState, LUA_REGISTRYINDEX, static_cast<int>(a_FnRef));  // same as lua_getref()
 	if (!lua_isfunction(m_LuaState, -1))
 	{
 		lua_pop(m_LuaState, 2);
@@ -821,6 +972,18 @@ void cLuaState::Push(std::chrono::milliseconds a_Value)
 
 
 
+void cLuaState::Pop(int a_NumValuesToPop)
+{
+	ASSERT(IsValid());
+
+	lua_pop(m_LuaState, a_NumValuesToPop);
+	m_NumCurrentFunctionArgs -= a_NumValuesToPop;
+}
+
+
+
+
+
 bool cLuaState::GetStackValue(int a_StackPos, AString & a_Value)
 {
 	size_t len = 0;
@@ -847,6 +1010,41 @@ bool cLuaState::GetStackValue(int a_StackPos, bool & a_ReturnedVal)
 
 
 
+bool cLuaState::GetStackValue(int a_StackPos, cCallback & a_Callback)
+{
+	return a_Callback.RefStack(*this, a_StackPos);
+}
+
+
+
+
+
+bool cLuaState::GetStackValue(int a_StackPos, cCallbackPtr & a_Callback)
+{
+	if (a_Callback == nullptr)
+	{
+		a_Callback = cpp14::make_unique<cCallback>();
+	}
+	return a_Callback->RefStack(*this, a_StackPos);
+}
+
+
+
+
+
+bool cLuaState::GetStackValue(int a_StackPos, cCallbackSharedPtr & a_Callback)
+{
+	if (a_Callback == nullptr)
+	{
+		a_Callback = std::make_shared<cCallback>();
+	}
+	return a_Callback->RefStack(*this, a_StackPos);
+}
+
+
+
+
+
 bool cLuaState::GetStackValue(int a_StackPos, cPluginManager::CommandResult & a_Result)
 {
 	if (lua_isnumber(m_LuaState, a_StackPos))
@@ -1632,16 +1830,16 @@ void cLuaState::ToString(int a_StackPos, AString & a_String)
 
 
 
-void cLuaState::LogStack(const char * a_Header)
+void cLuaState::LogStackValues(const char * a_Header)
 {
-	LogStack(m_LuaState, a_Header);
+	LogStackValues(m_LuaState, a_Header);
 }
 
 
 
 
 
-void cLuaState::LogStack(lua_State * a_LuaState, const char * a_Header)
+void cLuaState::LogStackValues(lua_State * a_LuaState, const char * a_Header)
 {
 	// Format string consisting only of %s is used to appease the compiler
 	LOG("%s", (a_Header != nullptr) ? a_Header : "Lua C API Stack contents:");
@@ -1667,6 +1865,21 @@ void cLuaState::LogStack(lua_State * a_LuaState, const char * a_Header)
 
 
 
+cLuaState * cLuaState::QueryCanonLuaState(void)
+{
+	// Get the CanonLuaState global from Lua:
+	auto cb = WalkToNamedGlobal(g_CanonLuaStateGlobalName);
+	if (!cb.IsValid())
+	{
+		return nullptr;
+	}
+	return reinterpret_cast<cLuaState *>(lua_touserdata(m_LuaState, -1));
+}
+
+
+
+
+
 int cLuaState::ReportFnCallErrors(lua_State * a_LuaState)
 {
 	LOGWARNING("LUA: %s", lua_tostring(a_LuaState, -1));
@@ -1701,6 +1914,50 @@ int cLuaState::BreakIntoDebugger(lua_State * a_LuaState)
 
 
 
+void cLuaState::TrackCallback(cCallback & a_Callback)
+{
+	// Get the CanonLuaState global from Lua:
+	auto canonState = QueryCanonLuaState();
+	if (canonState == nullptr)
+	{
+		LOGWARNING("%s: Lua state %p has invalid CanonLuaState!", __FUNCTION__, reinterpret_cast<void *>(m_LuaState));
+		return;
+	}
+
+	// Add the callback:
+	cCSLock Lock(canonState->m_CSTrackedCallbacks);
+	canonState->m_TrackedCallbacks.push_back(&a_Callback);
+}
+
+
+
+
+
+void cLuaState::UntrackCallback(cCallback & a_Callback)
+{
+	// Get the CanonLuaState global from Lua:
+	auto canonState = QueryCanonLuaState();
+	if (canonState == nullptr)
+	{
+		LOGWARNING("%s: Lua state %p has invalid CanonLuaState!", __FUNCTION__, reinterpret_cast<void *>(m_LuaState));
+		return;
+	}
+
+	// Remove the callback:
+	cCSLock Lock(canonState->m_CSTrackedCallbacks);
+	auto & trackedCallbacks = canonState->m_TrackedCallbacks;
+	trackedCallbacks.erase(std::remove_if(trackedCallbacks.begin(), trackedCallbacks.end(),
+		[&a_Callback](cCallback * a_StoredCallback)
+		{
+			return (a_StoredCallback == &a_Callback);
+		}
+	));
+}
+
+
+
+
+
 ////////////////////////////////////////////////////////////////////////////////
 // cLuaState::cRef:
 
@@ -1756,7 +2013,7 @@ void cLuaState::cRef::RefStack(cLuaState & a_LuaState, int a_StackPos)
 	{
 		UnRef();
 	}
-	m_LuaState = &a_LuaState;
+	m_LuaState = a_LuaState;
 	lua_pushvalue(a_LuaState, a_StackPos);  // Push a copy of the value at a_StackPos onto the stack
 	m_Ref = luaL_ref(a_LuaState, LUA_REGISTRYINDEX);
 }
@@ -1767,11 +2024,9 @@ void cLuaState::cRef::RefStack(cLuaState & a_LuaState, int a_StackPos)
 
 void cLuaState::cRef::UnRef(void)
 {
-	ASSERT(m_LuaState->IsValid());  // The reference should be destroyed before destroying the LuaState
-
 	if (IsValid())
 	{
-		luaL_unref(*m_LuaState, LUA_REGISTRYINDEX, m_Ref);
+		luaL_unref(m_LuaState, LUA_REGISTRYINDEX, m_Ref);
 	}
 	m_LuaState = nullptr;
 	m_Ref = LUA_REFNIL;
diff --git a/src/Bindings/LuaState.h b/src/Bindings/LuaState.h
index b795a80d4..106d8a783 100644
--- a/src/Bindings/LuaState.h
+++ b/src/Bindings/LuaState.h
@@ -7,7 +7,7 @@
 The contained lua_State can be either owned or attached.
 Owned lua_State is created by calling Create() and the cLuaState automatically closes the state
 Or, lua_State can be attached by calling Attach(), the cLuaState doesn't close such a state
-Attaching a state will automatically close an owned state.
+If owning a state, trying to attach a state will automatically close the previously owned state.
 
 Calling a Lua function is done internally by pushing the function using PushFunction(), then pushing the
 arguments and finally executing CallFunction(). cLuaState automatically keeps track of the number of
@@ -16,8 +16,12 @@ the stack using GetStackValue(). All of this is wrapped in a templated function
 which is generated automatically by gen_LuaState_Call.lua script file into the LuaState_Call.inc file.
 
 Reference management is provided by the cLuaState::cRef class. This is used when you need to hold a reference to
-any Lua object across several function calls; usually this is used for callbacks. The class is RAII-like, with
-automatic resource management.
+any Lua object across several function calls. The class is RAII-like, with automatic resource management.
+
+Callbacks management is provided by the cLuaState::cCallback class. Use a GetStackValue() with cCallbackPtr
+parameter to store the callback, and then at any time you can use the cCallback's Call() templated function
+to call the callback. The callback management takes care of cLuaState being destroyed - the cCallback object
+stays valid but doesn't call into Lua code anymore, returning false for "failure" instead.
 */
 
 
@@ -39,6 +43,7 @@ extern "C"
 class cLuaServerHandle;
 class cLuaTCPLink;
 class cLuaUDPEndpoint;
+class cPluginLua;
 
 
 
@@ -49,6 +54,20 @@ class cLuaState
 {
 public:
 
+	/** Provides a RAII-style locking for the LuaState.
+	Used mainly by the cPluginLua internals to provide the actual locking for interface operations, such as callbacks. */
+	class cLock
+	{
+	public:
+		cLock(cLuaState & a_LuaState):
+			m_Lock(a_LuaState.m_CS)
+		{
+		}
+	protected:
+		cCSLock m_Lock;
+	};
+
+
 	/** Used for storing references to object in the global registry.
 	Can be bound (contains a reference) or unbound (doesn't contain reference).
 	The reference can also be reset by calling RefStack(). */
@@ -80,8 +99,20 @@ public:
 		/** Allows to use this class wherever an int (i. e. ref) is to be used */
 		explicit operator int(void) const { return m_Ref; }
 
+		/** Returns the Lua state associated with the value. */
+		lua_State * GetLuaState(void) { return m_LuaState; }
+
+		/** Creates a Lua reference to the specified object instance in the specified Lua state.
+		This is useful to make anti-GC references for objects that were created by Lua and need to stay alive longer than Lua GC would normally guarantee. */
+		template <typename T> void CreateFromObject(cLuaState & a_LuaState, T && a_Object)
+		{
+			a_LuaState.Push(std::forward<T>(a_Object));
+			RefStack(a_LuaState, -1);
+			a_LuaState.Pop();
+		}
+
 	protected:
-		cLuaState * m_LuaState;
+		lua_State * m_LuaState;
 		int m_Ref;
 
 		// Remove the copy-constructor:
@@ -112,6 +143,83 @@ public:
 	} ;
 
 
+	/** Represents a callback to Lua that C++ code can call.
+	Is thread-safe and unload-safe.
+	When the Lua state is unloaded, the callback returns an error instead of calling into non-existent code.
+	To receive the callback instance from the Lua side, use RefStack() or (better) cLuaState::GetStackValue()
+	with a cCallbackPtr. Note that instances of this class are tracked in the canon LuaState instance, so that
+	they can be invalidated when the LuaState is unloaded; due to multithreading issues they can only be tracked
+	by-ptr, which has an unfortunate effect of disabling the copy and move constructors. */
+	class cCallback
+	{
+	public:
+		/** Creates an unbound callback instance. */
+		cCallback(void);
+
+		~cCallback()
+		{
+			Clear();
+		}
+
+		/** Calls the Lua callback, if still available.
+		Returns true if callback has been called.
+		Returns false if the Lua state isn't valid anymore. */
+		template <typename... Args>
+		bool Call(Args &&... args)
+		{
+			auto cs = m_CS;
+			if (cs == nullptr)
+			{
+				return false;
+			}
+			cCSLock Lock(*cs);
+			if (!m_Ref.IsValid())
+			{
+				return false;
+			}
+			return cLuaState(m_Ref.GetLuaState()).Call(m_Ref, std::forward<Args>(args)...);
+		}
+
+		/** Set the contained callback to the function in the specified Lua state's stack position.
+		If a callback has been previously contained, it is freed first. */
+		bool RefStack(cLuaState & a_LuaState, int a_StackPos);
+
+		/** Frees the contained callback, if any. */
+		void Clear(void);
+
+		/** Returns true if the contained callback is valid. */
+		bool IsValid(void);
+
+		/** Returns true if the callback resides in the specified Lua state.
+		Internally, compares the callback's canon Lua state. */
+		bool IsSameLuaState(cLuaState & a_LuaState);
+
+	protected:
+		friend class cLuaState;
+
+		/** The mutex protecting m_Ref against multithreaded access */
+		cCriticalSection * m_CS;
+
+		/** Reference to the Lua callback */
+		cRef m_Ref;
+
+
+		/** Invalidates the callback, without untracking it from the cLuaState.
+		Called only from cLuaState when closing the Lua state. */
+		void Invalidate(void);
+
+		/** This class cannot be copied, because it is tracked in the LuaState by-ptr.
+		Use cCallbackPtr for a copyable object. */
+		cCallback(const cCallback &) = delete;
+
+		/** This class cannot be moved, because it is tracked in the LuaState by-ptr.
+		Use cCallbackPtr for a copyable object. */
+		cCallback(cCallback &&) = delete;
+	};
+	typedef UniquePtr<cCallback> cCallbackPtr;
+	typedef SharedPtr<cCallback> cCallbackSharedPtr;
+
+
 	/** A dummy class that's used only to delimit function args from return values for cLuaState::Call() */
 	class cRet
 	{
@@ -168,6 +276,8 @@ public:
 	protected:
 		lua_State * m_LuaState;
 
+		/** Used for debugging, Lua state's stack size is checked against this number to make sure
+		it is the same as when the value was pushed. */
 		int m_StackLen;
 
 		// Remove the copy-constructor:
@@ -261,11 +371,17 @@ public:
 	void Push(const UInt32 a_Value);
 	void Push(std::chrono::milliseconds a_time);
 
+	/** Pops the specified number of values off the top of the Lua stack. */
+	void Pop(int a_NumValuesToPop = 1);
+
 	// GetStackValue() retrieves the value at a_StackPos, if it is a valid type. If not, a_Value is unchanged.
 	// Returns whether value was changed
 	// Enum values are checked for their allowed values and fail if the value is not assigned.
 	bool GetStackValue(int a_StackPos, AString & a_Value);
 	bool GetStackValue(int a_StackPos, bool & a_Value);
+	bool GetStackValue(int a_StackPos, cCallback & a_Callback);
+	bool GetStackValue(int a_StackPos, cCallbackPtr & a_Callback);
+	bool GetStackValue(int a_StackPos, cCallbackSharedPtr & a_Callback);
 	bool GetStackValue(int a_StackPos, cPluginManager::CommandResult & a_Result);
 	bool GetStackValue(int a_StackPos, cRef & a_Ref);
 	bool GetStackValue(int a_StackPos, double & a_Value);
@@ -440,21 +556,26 @@ public:
 	void ToString(int a_StackPos, AString & a_String);
 
 	/** Logs all the elements' types on the API stack, with an optional header for the listing. */
-	void LogStack(const char * a_Header = nullptr);
+	void LogStackValues(const char * a_Header = nullptr);
 
 	/** Logs all the elements' types on the API stack, with an optional header for the listing. */
-	static void LogStack(lua_State * a_LuaState, const char * a_Header = nullptr);
+	static void LogStackValues(lua_State * a_LuaState, const char * a_Header = nullptr);
+
+	/** Returns the canon Lua state (the primary cLuaState instance that was used to create, rather than attach, the lua_State structure).
+	Returns nullptr if the canon Lua state cannot be queried. */
+	cLuaState * QueryCanonLuaState(void);
 
 protected:
 
+	cCriticalSection m_CS;
+
 	lua_State * m_LuaState;
 
 	/** If true, the state is owned by this object and will be auto-Closed. False => attached state */
 	bool m_IsOwned;
 
 	/** The subsystem name is used for reporting errors to the console, it is either "plugin %s" or "LuaScript"
-	whatever is given to the constructor
-	*/
+	whatever is given to the constructor. */
 	AString m_SubsystemName;
 
 	/** Name of the currently pushed function (for the Push / Call chain) */
@@ -463,6 +584,15 @@ protected:
 	/** Number of arguments currently pushed (for the Push / Call chain) */
 	int m_NumCurrentFunctionArgs;
 
+	/** The tracked callbacks.
+	This object will invalidate all of these when it is about to be closed.
+	Protected against multithreaded access by m_CSTrackedCallbacks. */
+	std::vector<cCallback *> m_TrackedCallbacks;
+
+	/** Protects m_TrackedTallbacks against multithreaded access. */
+	cCriticalSection m_CSTrackedCallbacks;
+
+
 	/** Variadic template terminator: If there's nothing more to push / pop, just call the function.
 	Note that there are no return values either, because those are prefixed by a cRet value, so the arg list is never empty. */
 	bool PushCallPop(void)
@@ -512,18 +642,10 @@ protected:
 	*/
 	bool PushFunction(const char * a_FunctionName);
 
-	/** Pushes a function that has been saved into the global registry, identified by a_FnRef.
-	Returns true if successful. Logs a warning on failure
-	*/
-	bool PushFunction(int a_FnRef);
-
 	/** Pushes a function that has been saved as a reference.
 	Returns true if successful. Logs a warning on failure
 	*/
-	bool PushFunction(const cRef & a_FnRef)
-	{
-		return PushFunction(static_cast<int>(a_FnRef));
-	}
+	bool PushFunction(const cRef & a_FnRef);
 
 	/** Pushes a function that is stored in a referenced table by name
 	Returns true if successful. Logs a warning on failure
@@ -545,6 +667,14 @@ protected:
 
 	/** Tries to break into the MobDebug debugger, if it is installed. */
 	static int BreakIntoDebugger(lua_State * a_LuaState);
+
+	/** Adds the specified callback to tracking.
+	The callback will be invalidated when this Lua state is about to be closed. */
+	void TrackCallback(cCallback & a_Callback);
+
+	/** Removes the specified callback from tracking.
+	The callback will no longer be invalidated when this Lua state is about to be closed. */
+	void UntrackCallback(cCallback & a_Callback);
 } ;
 
 
diff --git a/src/Bindings/LuaTCPLink.cpp b/src/Bindings/LuaTCPLink.cpp
index deaba9d86..4b04a1c02 100644
--- a/src/Bindings/LuaTCPLink.cpp
+++ b/src/Bindings/LuaTCPLink.cpp
@@ -13,7 +13,7 @@
 
 cLuaTCPLink::cLuaTCPLink(cPluginLua & a_Plugin, int a_CallbacksTableStackPos):
 	m_Plugin(a_Plugin),
-	m_Callbacks(a_Plugin.GetLuaState(), a_CallbacksTableStackPos)
+	m_Callbacks(cPluginLua::cOperation(a_Plugin)(), a_CallbacksTableStackPos)
 {
 	// Warn if the callbacks aren't valid:
 	if (!m_Callbacks.IsValid())
diff --git a/src/Bindings/LuaUDPEndpoint.cpp b/src/Bindings/LuaUDPEndpoint.cpp
index 8637eeb4e..ed8f4e87f 100644
--- a/src/Bindings/LuaUDPEndpoint.cpp
+++ b/src/Bindings/LuaUDPEndpoint.cpp
@@ -12,7 +12,7 @@
 
 cLuaUDPEndpoint::cLuaUDPEndpoint(cPluginLua & a_Plugin, int a_CallbacksTableStackPos):
 	m_Plugin(a_Plugin),
-	m_Callbacks(a_Plugin.GetLuaState(), a_CallbacksTableStackPos)
+	m_Callbacks(cPluginLua::cOperation(a_Plugin)(), a_CallbacksTableStackPos)
 {
 	// Warn if the callbacks aren't valid:
 	if (!m_Callbacks.IsValid())
diff --git a/src/Bindings/LuaWindow.cpp b/src/Bindings/LuaWindow.cpp
index 706397a27..6fffa7aac 100644
--- a/src/Bindings/LuaWindow.cpp
+++ b/src/Bindings/LuaWindow.cpp
@@ -15,14 +15,13 @@
 ////////////////////////////////////////////////////////////////////////////////
 // cLuaWindow:
 
-cLuaWindow::cLuaWindow(cWindow::WindowType a_WindowType, int a_SlotsX, int a_SlotsY, const AString & a_Title) :
-	super(a_WindowType, a_Title),
+cLuaWindow::cLuaWindow(cLuaState & a_LuaState, cWindow::WindowType a_WindowType, int a_SlotsX, int a_SlotsY, const AString & a_Title) :
+	Super(a_WindowType, a_Title),
 	m_Contents(a_SlotsX, a_SlotsY),
-	m_Plugin(nullptr),
-	m_LuaRef(LUA_REFNIL),
-	m_OnClosingFnRef(LUA_REFNIL),
-	m_OnSlotChangedFnRef(LUA_REFNIL)
+	m_LuaState(a_LuaState.QueryCanonLuaState())
 {
+	ASSERT(m_LuaState != nullptr);  // We must have a valid Lua state; this assert fails only if there was no Canon Lua state
+
 	m_Contents.AddListener(*this);
 	m_SlotAreas.push_back(new cSlotAreaItemGrid(m_Contents, *this));
 
@@ -67,62 +66,42 @@ cLuaWindow::~cLuaWindow()
 
 
 
-void cLuaWindow::SetLuaRef(cPluginLua * a_Plugin, int a_LuaRef)
+void cLuaWindow::SetOnClosing(cLuaState::cCallbackPtr && a_OnClosing)
 {
-	// Either m_Plugin is not set or equal to the passed plugin; only one plugin can use one cLuaWindow object
-	ASSERT((m_Plugin == nullptr) || (m_Plugin == a_Plugin));
-	ASSERT(m_LuaRef == LUA_REFNIL);
-	m_Plugin = a_Plugin;
-	m_LuaRef = a_LuaRef;
-}
-
-
-
+	// Only one Lua state can be a cLuaWindow object callback:
+	ASSERT(a_OnClosing->IsSameLuaState(*m_LuaState));
 
-
-bool cLuaWindow::IsLuaReferenced(void) const
-{
-	return ((m_Plugin != nullptr) && (m_LuaRef != LUA_REFNIL));
+	// Store the new reference, releasing the old one if appropriate:
+	m_OnClosing = std::move(a_OnClosing);
 }
 
 
 
 
 
-void cLuaWindow::SetOnClosing(cPluginLua * a_Plugin, int a_FnRef)
+void cLuaWindow::SetOnSlotChanged(cLuaState::cCallbackPtr && a_OnSlotChanged)
 {
-	// Either m_Plugin is not set or equal to the passed plugin; only one plugin can use one cLuaWindow object
-	ASSERT((m_Plugin == nullptr) || (m_Plugin == a_Plugin));
+	// Only one Lua state can be a cLuaWindow object callback:
+	ASSERT(a_OnSlotChanged->IsSameLuaState(*m_LuaState));
 
-	// If there already was a function, unreference it first
-	if (m_OnClosingFnRef != LUA_REFNIL)
-	{
-		m_Plugin->Unreference(m_OnClosingFnRef);
-	}
-
-	// Store the new reference
-	m_Plugin = a_Plugin;
-	m_OnClosingFnRef = a_FnRef;
+	// Store the new reference, releasing the old one if appropriate:
+	m_OnSlotChanged = std::move(a_OnSlotChanged);
 }
 
 
 
 
 
-void cLuaWindow::SetOnSlotChanged(cPluginLua * a_Plugin, int a_FnRef)
+void cLuaWindow::OpenedByPlayer(cPlayer & a_Player)
 {
-	// Either m_Plugin is not set or equal to the passed plugin; only one plugin can use one cLuaWindow object
-	ASSERT((m_Plugin == nullptr) || (m_Plugin == a_Plugin));
-
-	// If there already was a function, unreference it first
-	if (m_OnSlotChangedFnRef != LUA_REFNIL)
+	// If the first player is opening the window, create a Lua Reference to the window object so that Lua will not GC it until the last player closes the window:
+	if (m_PlayerCount == 0)
 	{
-		m_Plugin->Unreference(m_OnSlotChangedFnRef);
+		m_LuaRef.CreateFromObject(*m_LuaState, this);
 	}
 
-	// Store the new reference
-	m_Plugin = a_Plugin;
-	m_OnSlotChangedFnRef = a_FnRef;
+	++m_PlayerCount;
+	Super::OpenedByPlayer(a_Player);
 }
 
 
@@ -132,17 +111,27 @@ void cLuaWindow::SetOnSlotChanged(cPluginLua * a_Plugin, int a_FnRef)
 bool cLuaWindow::ClosedByPlayer(cPlayer & a_Player, bool a_CanRefuse)
 {
 	// First notify the plugin through the registered callback:
-	if (m_OnClosingFnRef != LUA_REFNIL)
+	if (m_OnClosing != nullptr)
 	{
-		ASSERT(m_Plugin != nullptr);
-		if (m_Plugin->CallbackWindowClosing(m_OnClosingFnRef, *this, a_Player, a_CanRefuse))
+		bool res;
+		if (
+			m_OnClosing->Call(this, &a_Player, a_CanRefuse, cLuaState::Return, res) &&  // The callback succeeded
+			res                                                                        // The callback says not to close the window
+		)
 		{
 			// The callback disagrees (the higher levels check the CanRefuse flag compliance)
 			return false;
 		}
 	}
 
-	return super::ClosedByPlayer(a_Player, a_CanRefuse);
+	// If the last player has closed the window, release the Lua reference, so that Lua may GC the object:
+	--m_PlayerCount;
+	if (m_PlayerCount == 0)
+	{
+		m_LuaRef.UnRef();
+	}
+
+	return Super::ClosedByPlayer(a_Player, a_CanRefuse);
 }
 
 
@@ -151,13 +140,7 @@ bool cLuaWindow::ClosedByPlayer(cPlayer & a_Player, bool a_CanRefuse)
 
 void cLuaWindow::Destroy(void)
 {
-	super::Destroy();
-
-	if ((m_LuaRef != LUA_REFNIL) && (m_Plugin != nullptr))
-	{
-		// The object is referenced by Lua, un-reference it
-		m_Plugin->Unreference(m_LuaRef);
-	}
+	Super::Destroy();
 
 	// Lua will take care of this object, it will garbage-collect it, so we must not delete it!
 	m_IsDestroyed = false;
@@ -178,7 +161,7 @@ void cLuaWindow::DistributeStack(cItem & a_ItemStack, int a_Slot, cPlayer & a_Pl
 		}
 	}
 
-	super::DistributeStackToAreas(a_ItemStack, a_Player, Areas, a_ShouldApply, false);
+	Super::DistributeStackToAreas(a_ItemStack, a_Player, Areas, a_ShouldApply, false);
 }
 
 
@@ -194,9 +177,9 @@ void cLuaWindow::OnSlotChanged(cItemGrid * a_ItemGrid, int a_SlotNum)
 	}
 
 	// If an OnSlotChanged callback has been registered, call it:
-	if (m_OnSlotChangedFnRef != LUA_REFNIL)
+	if (m_OnSlotChanged != nullptr)
 	{
-		m_Plugin->CallbackWindowSlotChanged(m_OnSlotChangedFnRef, *this, a_SlotNum);
+		m_OnSlotChanged->Call(this, a_SlotNum);
 	}
 }
 
diff --git a/src/Bindings/LuaWindow.h b/src/Bindings/LuaWindow.h
index f292a5154..5f987d4c6 100644
--- a/src/Bindings/LuaWindow.h
+++ b/src/Bindings/LuaWindow.h
@@ -9,6 +9,8 @@
 
 #pragma once
 
+#include <atomic>
+#include "LuaState.h"
 #include "../UI/Window.h"
 #include "../ItemGrid.h"
 
@@ -16,35 +18,30 @@
 
 
 
-// fwd: PluginLua.h
-class cPluginLua;
-
-
-
-
-
 /** A window that has been created by a Lua plugin and is handled entirely by that plugin
 This object needs extra care with its lifetime management:
 - It is created by Lua, so Lua expects to garbage-collect it later
-- normal cWindow objects are deleted in their ClosedByPlayer() function if the last player closes them
-To overcome this, this object overloads the Destroy functions, which doesn't let the ClosedByPlayer()
-delete the window, but rather leaves it dangling, with only Lua having the reference to it.
-Additionally, to forbid Lua from deleting this object while it is used by players, the manual bindings for
-cPlayer:OpenWindow check if the window is of this class, and if so, make a global Lua reference for this object.
-This reference needs to be unreferenced in the Destroy() function. */
+- Normal cWindow objects are deleted in their ClosedByPlayer() function if the last player closes them
+	To overcome this, this object overloads the Destroy functions, which doesn't let the ClosedByPlayer()
+	delete the window, but rather leaves it dangling, with only Lua having the reference to it.
+- Lua could GC the window while a player is still using it
+	The object creates a Lua reference to itself when opened by a player and
+	removes the reference when the last player closes the window.
+*/
 // tolua_begin
 class cLuaWindow :
 	public cWindow
 	// tolua_end
 	, public cItemGrid::cListener
-	// tolua_begin
-{
-	typedef cWindow super;
+{  // tolua_export
+	typedef cWindow Super;
 
 public:
-	/** Create a window of the specified type, with a slot grid of a_SlotsX * a_SlotsY size */
-	cLuaWindow(cWindow::WindowType a_WindowType, int a_SlotsX, int a_SlotsY, const AString & a_Title);
+	/** Create a window of the specified type, with a slot grid of a_SlotsX * a_SlotsY size.
+	Exported in ManualBindings.cpp */
+	cLuaWindow(cLuaState & a_LuaState, cWindow::WindowType a_WindowType, int a_SlotsX, int a_SlotsY, const AString & a_Title);
 
+	// tolua_begin
 	virtual ~cLuaWindow();
 
 	/** Returns the internal representation of the contents that are manipulated by Lua */
@@ -52,36 +49,37 @@ public:
 
 	// tolua_end
 
-	/** Sets the plugin reference and the internal Lua object reference index
-	used for preventing Lua's GC to collect this class while the window is open. */
-	void SetLuaRef(cPluginLua * a_Plugin, int a_LuaRef);
-
-	/** Returns true if SetLuaRef() has been called */
-	bool IsLuaReferenced(void) const;
-
-	/** Sets the callback function (Lua reference) to call when the window is about to close */
-	void SetOnClosing(cPluginLua * a_Plugin, int a_FnRef);
+	/** Sets the Lua callback function to call when the window is about to close */
+	void SetOnClosing(cLuaState::cCallbackPtr && a_OnClosing);
 
-	/** Sets the callback function (Lua reference) to call when a slot is changed */
-	void SetOnSlotChanged(cPluginLua * a_Plugin, int a_FnRef);
+	/** Sets the Lua callback function to call when a slot is changed */
+	void SetOnSlotChanged(cLuaState::cCallbackPtr && a_OnSlotChanged);
 
 protected:
+
 	/** Contents of the non-inventory part */
 	cItemGrid m_Contents;
 
-	/** The plugin that has opened the window and owns the m_LuaRef */
-	cPluginLua * m_Plugin;
+	/** The Lua state that has opened the window and owns the m_LuaRef */
+	cLuaState * m_LuaState;
+
+	/** The Lua callback to call when the window is closing for any player */
+	cLuaState::cCallbackPtr m_OnClosing;
+
+	/** The Lua callback to call when a slot has changed */
+	cLuaState::cCallbackPtr m_OnSlotChanged;
 
-	/** The Lua object reference, used for keeping the object alive as long as any player has the window open */
-	int m_LuaRef;
+	/** Number of players that are currently using the window.
+	Used to manager the m_LuaRef lifetime. */
+	std::atomic<int> m_PlayerCount;
 
-	/** The Lua reference for the callback to call when the window is closing for any player */
-	int m_OnClosingFnRef;
+	/** Reference to self, to keep Lua from GCing the object while a player is still using it.
+	Created when the first player opens the window, destroyed when the last player closes the window. */
+	cLuaState::cRef m_LuaRef;
 
-	/** The Lua reference for the callback to call when a slot has changed */
-	int m_OnSlotChangedFnRef;
 
 	// cWindow overrides:
+	virtual void OpenedByPlayer(cPlayer & a_Player) override;
 	virtual bool ClosedByPlayer(cPlayer & a_Player, bool a_CanRefuse) override;
 	virtual void Destroy(void) override;
 	virtual void DistributeStack(cItem & a_ItemStack, int a_Slot, cPlayer & a_Player, cSlotArea * a_ClickedArea, bool a_ShouldApply) override;
diff --git a/src/Bindings/ManualBindings.cpp b/src/Bindings/ManualBindings.cpp
index 9945929d0..1d735ac83 100644
--- a/src/Bindings/ManualBindings.cpp
+++ b/src/Bindings/ManualBindings.cpp
@@ -43,6 +43,50 @@
 
 
 
+////////////////////////////////////////////////////////////////////////////////
+// LuaCommandHandler:
+
+/** Defines a bridge between cPluginManager::cCommandHandler and cLuaState::cCallback. */
+class LuaCommandHandler:
+	public cPluginManager::cCommandHandler
+{
+public:
+	LuaCommandHandler(cLuaState::cCallbackPtr && a_Callback):
+		m_Callback(std::move(a_Callback))
+	{
+	}
+
+	virtual bool ExecuteCommand(
+		const AStringVector & a_Split,
+		cPlayer * a_Player,
+		const AString & a_Command,
+		cCommandOutputCallback * a_Output
+	) override
+	{
+		bool res = false;
+		AString s;
+		if (!m_Callback->Call(a_Split, a_Player, a_Command, cLuaState::Return, res, s))
+		{
+			return false;
+		}
+		if (res && (a_Output != nullptr) && !s.empty())
+		{
+			a_Output->Out(s);
+		}
+		return res;
+	}
+
+protected:
+	cLuaState::cCallbackPtr m_Callback;
+};
+
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+// cManualBindings:
+
 // Better error reporting for Lua
 int cManualBindings::tolua_do_error(lua_State * L, const char * a_pMsg, tolua_Error * a_pToLuaError)
 {
@@ -993,7 +1037,13 @@ static int tolua_cPluginManager_AddHook_FnRef(cPluginManager * a_PluginManager,
 	}
 
 	// Retrieve and check the hook type
-	int HookType = static_cast<int>(tolua_tonumber(S, a_ParamIdx, -1));
+	int HookType;
+	if (!S.GetStackValue(a_ParamIdx, HookType))
+	{
+		LOGWARNING("cPluginManager.AddHook(): Cannot read the hook type.");
+		S.LogStackTrace();
+		return 0;
+	}
 	if (!a_PluginManager->IsValidHookType(HookType))
 	{
 		LOGWARNING("cPluginManager.AddHook(): Invalid HOOK_TYPE parameter: %d", HookType);
@@ -1002,7 +1052,14 @@ static int tolua_cPluginManager_AddHook_FnRef(cPluginManager * a_PluginManager,
 	}
 
 	// Add the hook to the plugin
-	if (!Plugin->AddHookRef(HookType, a_ParamIdx + 1))
+	cLuaState::cCallbackPtr callback;
+	if (!S.GetStackValue(a_ParamIdx + 1, callback))
+	{
+		LOGWARNING("cPluginManager.AddHook(): Cannot read the callback parameter");
+		S.LogStackTrace();
+		return 0;
+	}
+	if (!Plugin->AddHookCallback(HookType, std::move(callback)))
 	{
 		LOGWARNING("cPluginManager.AddHook(): Cannot add hook %d, unknown error.", HookType);
 		S.LogStackTrace();
@@ -1059,10 +1116,11 @@ static int tolua_cPluginManager_AddHook_DefFn(cPluginManager * a_PluginManager,
 	}
 
 	// Retrieve the function to call and add it to the plugin:
-	lua_pushstring(S, FnName);
-	bool res = Plugin->AddHookRef(HookType, 1);
-	lua_pop(S, 1);  // Pop the function off the stack
-	if (!res)
+	cLuaState::cCallbackPtr callback;
+	lua_getglobal(S, FnName);
+	bool res = S.GetStackValue(-1, callback);
+	lua_pop(S, 1);
+	if (!res || !callback->IsValid())
 	{
 		LOGWARNING("cPluginManager.AddHook(): Function %s not found. Hook not added.", FnName);
 		S.LogStackTrace();
@@ -1254,12 +1312,13 @@ static int tolua_cPluginManager_ForEachConsoleCommand(lua_State * tolua_S)
 
 
 
-static int tolua_cPluginManager_BindCommand(lua_State * L)
+static int tolua_cPluginManager_BindCommand(lua_State * a_LuaState)
 {
 	/* Function signatures:
 		cPluginManager:BindCommand(Command, Permission, Function, HelpString)
 		cPluginManager.BindCommand(Command, Permission, Function, HelpString)  -- without the "self" param
 	*/
+	cLuaState L(a_LuaState);
 	cPluginLua * Plugin = cManualBindings::GetLuaPlugin(L);
 	if (Plugin == nullptr)
 	{
@@ -1292,29 +1351,24 @@ static int tolua_cPluginManager_BindCommand(lua_State * L)
 		return 0;
 	}
 	cPluginManager * self = cPluginManager::Get();
-	AString Command   (tolua_tocppstring(L, idx,     ""));
-	AString Permission(tolua_tocppstring(L, idx + 1, ""));
-	AString HelpString(tolua_tocppstring(L, idx + 3, ""));
-
-	// Store the function reference:
-	lua_pop(L, 1);  // Pop the help string off the stack
-	int FnRef = luaL_ref(L, LUA_REGISTRYINDEX);  // Store function reference
-	if (FnRef == LUA_REFNIL)
+	AString Command, Permission, HelpString;
+	cLuaState::cCallbackPtr Handler;
+	L.GetStackValues(idx, Command, Permission, Handler, HelpString);
+	if (!Handler->IsValid())
 	{
 		LOGERROR("\"BindCommand\": Cannot create a function reference. Command \"%s\" not bound.", Command.c_str());
 		return 0;
 	}
 
-	if (!self->BindCommand(Command, Plugin, Permission, HelpString))
+	auto CommandHandler = std::make_shared<LuaCommandHandler>(std::move(Handler));
+	if (!self->BindCommand(Command, Plugin, CommandHandler, Permission, HelpString))
 	{
 		// Refused. Possibly already bound. Error message has been given, display the callstack:
-		cLuaState LS(L);
-		LS.LogStackTrace();
+		L.LogStackTrace();
 		return 0;
 	}
 
-	Plugin->BindCommand(Command, FnRef);
-	lua_pushboolean(L, true);
+	L.Push(true);
 	return 1;
 }
 
@@ -1322,7 +1376,7 @@ static int tolua_cPluginManager_BindCommand(lua_State * L)
 
 
 
-static int tolua_cPluginManager_BindConsoleCommand(lua_State * L)
+static int tolua_cPluginManager_BindConsoleCommand(lua_State * a_LuaState)
 {
 	/* Function signatures:
 		cPluginManager:BindConsoleCommand(Command, Function, HelpString)
@@ -1330,6 +1384,7 @@ static int tolua_cPluginManager_BindConsoleCommand(lua_State * L)
 	*/
 
 	// Get the plugin identification out of LuaState:
+	cLuaState L(a_LuaState);
 	cPluginLua * Plugin = cManualBindings::GetLuaPlugin(L);
 	if (Plugin == nullptr)
 	{
@@ -1361,28 +1416,23 @@ static int tolua_cPluginManager_BindConsoleCommand(lua_State * L)
 		return 0;
 	}
 	cPluginManager * self = cPluginManager::Get();
-	AString Command   (tolua_tocppstring(L, idx,     ""));
-	AString HelpString(tolua_tocppstring(L, idx + 2, ""));
-
-	// Store the function reference:
-	lua_pop(L, 1);  // Pop the help string off the stack
-	int FnRef = luaL_ref(L, LUA_REGISTRYINDEX);  // Store function reference
-	if (FnRef == LUA_REFNIL)
+	AString Command, HelpString;
+	cLuaState::cCallbackPtr Handler;
+	L.GetStackValues(idx, Command, Handler, HelpString);
+	if (!Handler->IsValid())
 	{
-		LOGERROR("\"BindConsoleCommand\": Cannot create a function reference. Console Command \"%s\" not bound.", Command.c_str());
+		LOGERROR("\"BindConsoleCommand\": Cannot create a function reference. Console command \"%s\" not bound.", Command.c_str());
 		return 0;
 	}
 
-	if (!self->BindConsoleCommand(Command, Plugin, HelpString))
+	auto CommandHandler = std::make_shared<LuaCommandHandler>(std::move(Handler));
+	if (!self->BindConsoleCommand(Command, Plugin, CommandHandler, HelpString))
 	{
 		// Refused. Possibly already bound. Error message has been given, display the callstack:
-		cLuaState LS(L);
-		LS.LogStackTrace();
+		L.LogStackTrace();
 		return 0;
 	}
-
-	Plugin->BindConsoleCommand(Command, FnRef);
-	lua_pushboolean(L, true);
+	L.Push(true);
 	return 1;
 }
 
@@ -1586,55 +1636,6 @@ static int tolua_cPlayer_GetRestrictions(lua_State * tolua_S)
 
 
 
-static int tolua_cPlayer_OpenWindow(lua_State * tolua_S)
-{
-	// Function signature: cPlayer:OpenWindow(Window)
-
-	// Retrieve the plugin instance from the Lua state
-	cPluginLua * Plugin = cManualBindings::GetLuaPlugin(tolua_S);
-	if (Plugin == nullptr)
-	{
-		return 0;
-	}
-
-	// Get the parameters:
-	cPlayer * self = reinterpret_cast<cPlayer *>(tolua_tousertype(tolua_S, 1, nullptr));
-	cWindow * wnd  = reinterpret_cast<cWindow *>(tolua_tousertype(tolua_S, 2, nullptr));
-	if ((self == nullptr) || (wnd == nullptr))
-	{
-		LOGWARNING("%s: invalid self (%p) or wnd (%p)", __FUNCTION__, static_cast<void *>(self), static_cast<void *>(wnd));
-		return 0;
-	}
-
-	// If cLuaWindow, add a reference, so that Lua won't delete the cLuaWindow object mid-processing
-	tolua_Error err;
-	if (tolua_isusertype(tolua_S, 2, "cLuaWindow", 0, &err))
-	{
-		cLuaWindow * LuaWnd = reinterpret_cast<cLuaWindow *>(wnd);
-		// Only if not already referenced
-		if (!LuaWnd->IsLuaReferenced())
-		{
-			int LuaRef = luaL_ref(tolua_S, LUA_REGISTRYINDEX);
-			if (LuaRef == LUA_REFNIL)
-			{
-				LOGWARNING("%s: Cannot create a window reference. Cannot open window \"%s\".",
-					__FUNCTION__, wnd->GetWindowTitle().c_str()
-				);
-				return 0;
-			}
-			LuaWnd->SetLuaRef(Plugin, LuaRef);
-		}
-	}
-
-	// Open the window
-	self->OpenWindow(wnd);
-	return 0;
-}
-
-
-
-
-
 static int tolua_cPlayer_PermissionMatches(lua_State * tolua_S)
 {
 	// Function signature: cPlayer:PermissionMatches(PermissionStr, TemplateStr) -> bool
@@ -1665,36 +1666,25 @@ static int tolua_cPlayer_PermissionMatches(lua_State * tolua_S)
 
 template <
 	class OBJTYPE,
-	void (OBJTYPE::*SetCallback)(cPluginLua * a_Plugin, int a_FnRef)
+	void (OBJTYPE::*SetCallback)(cLuaState::cCallbackPtr && a_CallbackFn)
 >
 static int tolua_SetObjectCallback(lua_State * tolua_S)
 {
 	// Function signature: OBJTYPE:SetWhateverCallback(CallbackFunction)
 
-	// Retrieve the plugin instance from the Lua state
-	cPluginLua * Plugin = cManualBindings::GetLuaPlugin(tolua_S);
-	if (Plugin == nullptr)
-	{
-		// Warning message has already been printed by GetLuaPlugin(), bail out silently
-		return 0;
-	}
-
 	// Get the parameters - self and the function reference:
-	OBJTYPE * self = reinterpret_cast<OBJTYPE *>(tolua_tousertype(tolua_S, 1, nullptr));
-	if (self == nullptr)
-	{
-		LOGWARNING("%s: invalid self (%p)", __FUNCTION__, static_cast<void *>(self));
-		return 0;
-	}
-	int FnRef = luaL_ref(tolua_S, LUA_REGISTRYINDEX);  // Store function reference for later retrieval
-	if (FnRef == LUA_REFNIL)
+	cLuaState L(tolua_S);
+	OBJTYPE * self;
+	cLuaState::cCallbackPtr callback;
+	if (!L.GetStackValues(1, self, callback))
 	{
-		LOGERROR("%s: Cannot create a function reference. Callback not set.", __FUNCTION__);
+		LOGWARNING("%s: Cannot get parameters", __FUNCTION__);
+		L.LogStackTrace();
 		return 0;
 	}
 
 	// Set the callback
-	(self->*SetCallback)(Plugin, FnRef);
+	(self->*SetCallback)(std::move(callback));
 	return 0;
 }
 
@@ -1702,47 +1692,71 @@ static int tolua_SetObjectCallback(lua_State * tolua_S)
 
 
 
-static int tolua_cPluginLua_AddWebTab(lua_State * tolua_S)
+// Callback class used for the WebTab:
+class cWebTabCallback:
+	public cWebAdmin::cWebTabCallback
 {
-	cLuaState LuaState(tolua_S);
-	cPluginLua * self = nullptr;
+public:
+	/** The Lua callback to call to generate the page contents. */
+	cLuaState::cCallback m_Callback;
 
-	if (!LuaState.GetStackValue(1, self))
+	virtual bool Call(
+		const HTTPRequest & a_Request,
+		const AString & a_UrlPath,
+		AString & a_Content,
+		AString & a_ContentType
+	) override
 	{
-		LOGWARNING("cPluginLua:AddWebTab: invalid self as first argument");
-		return 0;
+		AString content, contentType;
+		return m_Callback.Call(&a_Request, a_UrlPath, cLuaState::Return, a_Content, a_ContentType);
 	}
+};
+
+
+
 
-	tolua_Error tolua_err;
-	tolua_err.array = 0;
-	tolua_err.index = 3;
-	tolua_err.type = "function";
 
-	std::string Title;
-	int Reference = LUA_REFNIL;
+static int tolua_cPluginLua_AddWebTab(lua_State * tolua_S)
+{
+	// OBSOLETE, use cWebAdmin:AddWebTab() instead!
+	// Function signature:
+	// cPluginLua:AddWebTab(Title, CallbackFn, [UrlPath])
 
-	if (LuaState.CheckParamString(2) && LuaState.CheckParamFunction(3))
+	// TODO: Warn about obsolete API usage
+	// Only implement after merging the new API change and letting some time for changes in the plugins
+
+	// Check params:
+	cLuaState LuaState(tolua_S);
+	cPluginLua * self = cManualBindings::GetLuaPlugin(tolua_S);
+	if (self == nullptr)
 	{
-		Reference = luaL_ref(tolua_S, LUA_REGISTRYINDEX);
-		LuaState.GetStackValue(2, Title);
+		return 0;
 	}
-	else
+	if (
+		!LuaState.CheckParamString(2) ||
+		!LuaState.CheckParamFunction(3) ||
+		// Optional string as param 4
+		!LuaState.CheckParamEnd(5)
+	)
 	{
-		return cManualBindings::tolua_do_error(tolua_S, "#ferror calling function '#funcname#'", &tolua_err);
+		return 0;
 	}
 
-	if (Reference != LUA_REFNIL)
+	// Read the params:
+	AString title, urlPath;
+	auto callback = std::make_shared<cWebTabCallback>();
+	if (!LuaState.GetStackValues(2, title, callback->m_Callback))
 	{
-		if (!self->AddWebTab(Title.c_str(), tolua_S, Reference))
-		{
-			luaL_unref(tolua_S, LUA_REGISTRYINDEX, Reference);
-		}
+		LOGWARNING("cPlugin:AddWebTab(): Cannot read required parameters");
+		return 0;
 	}
-	else
+	if (!LuaState.GetStackValue(4, urlPath))
 	{
-		LOGWARNING("cPluginLua:AddWebTab: invalid function reference in 2nd argument (Title: \"%s\")", Title.c_str());
+		urlPath = cWebAdmin::GetURLEncodedString(title);
 	}
 
+	cRoot::Get()->GetWebAdmin()->AddWebTab(title, urlPath, self->GetName(), callback);
+
 	return 0;
 }
 
@@ -2107,22 +2121,68 @@ static int tolua_cUrlParser_ParseAuthorityPart(lua_State * a_LuaState)
 
 
 
-static int tolua_cWebAdmin_GetPlugins(lua_State * tolua_S)
+static int tolua_cWebAdmin_AddWebTab(lua_State * tolua_S)
+{
+	// Function signatures:
+	// cWebAdmin:AddWebTab(Title, UrlPath, CallbackFn)
+
+	// Check params:
+	cLuaState LuaState(tolua_S);
+	cPluginLua * self = cManualBindings::GetLuaPlugin(tolua_S);
+	if (self == nullptr)
+	{
+		return 0;
+	}
+	if (
+		// Don't care whether the first param is a cWebAdmin instance or class
+		!LuaState.CheckParamString(2, 3) ||
+		!LuaState.CheckParamFunction(4) ||
+		!LuaState.CheckParamEnd(5)
+	)
+	{
+		return 0;
+	}
+
+	// Read the params:
+	AString title, urlPath;
+	auto callback = std::make_shared<cWebTabCallback>();
+	if (!LuaState.GetStackValues(2, title, urlPath, callback->m_Callback))
+	{
+		LOGWARNING("cWebAdmin:AddWebTab(): Cannot read required parameters");
+		return 0;
+	}
+
+	cRoot::Get()->GetWebAdmin()->AddWebTab(title, urlPath, self->GetName(), callback);
+
+	return 0;
+}
+
+
+
+
+
+static int tolua_cWebAdmin_GetAllWebTabs(lua_State * tolua_S)
 {
-	cWebAdmin * self = reinterpret_cast<cWebAdmin *>(tolua_tousertype(tolua_S, 1, nullptr));
+	// Function signature:
+	// cWebAdmin:GetAllWebTabs() -> { {"PluginName", "UrlPath", "Title"}, {"PluginName", "UrlPath", "Title"}, ...}
 
-	const cWebAdmin::PluginList & AllPlugins = self->GetPlugins();
+	// Don't care about params at all
 
-	lua_createtable(tolua_S, static_cast<int>(AllPlugins.size()), 0);
+	auto webTabs = cRoot::Get()->GetWebAdmin()->GetAllWebTabs();
+	lua_createtable(tolua_S, static_cast<int>(webTabs.size()), 0);
 	int newTable = lua_gettop(tolua_S);
 	int index = 1;
-	cWebAdmin::PluginList::const_iterator iter = AllPlugins.begin();
-	while (iter != AllPlugins.end())
-	{
-		const cWebPlugin * Plugin = *iter;
-		tolua_pushusertype(tolua_S, reinterpret_cast<void *>(const_cast<cWebPlugin*>(Plugin)), "const cWebPlugin");
+	cLuaState L(tolua_S);
+	for (const auto & wt: webTabs)
+	{
+		lua_createtable(tolua_S, 0, 3);
+		L.Push(wt->m_PluginName);
+		lua_setfield(tolua_S, -2, "PluginName");
+		L.Push(wt->m_UrlPath);
+		lua_setfield(tolua_S, -2, "UrlPath");
+		L.Push(wt->m_Title);
+		lua_setfield(tolua_S, -2, "Title");
 		lua_rawseti(tolua_S, newTable, index);
-		++iter;
 		++index;
 	}
 	return 1;
@@ -2132,14 +2192,14 @@ static int tolua_cWebAdmin_GetPlugins(lua_State * tolua_S)
 
 
 
-/** Binding for cWebAdmin::GetHTMLEscapedString.
+/** Binding for cWebAdmin::GetBaseURL.
 Manual code required because ToLua generates an extra return value */
-static int tolua_AllToLua_cWebAdmin_GetHTMLEscapedString(lua_State * tolua_S)
+static int tolua_cWebAdmin_GetBaseURL(lua_State * tolua_S)
 {
 	// Check the param types:
 	cLuaState S(tolua_S);
 	if (
-		!S.CheckParamUserTable(1, "cWebAdmin") ||
+		// Don't care whether the first param is a cWebAdmin instance or class
 		!S.CheckParamString(2) ||
 		!S.CheckParamEnd(3)
 	)
@@ -2152,7 +2212,7 @@ static int tolua_AllToLua_cWebAdmin_GetHTMLEscapedString(lua_State * tolua_S)
 	S.GetStackValue(2, Input);
 
 	// Convert and return:
-	S.Push(cWebAdmin::GetHTMLEscapedString(Input));
+	S.Push(cWebAdmin::GetBaseURL(Input));
 	return 1;
 }
 
@@ -2160,14 +2220,14 @@ static int tolua_AllToLua_cWebAdmin_GetHTMLEscapedString(lua_State * tolua_S)
 
 
 
-/** Binding for cWebAdmin::GetURLEncodedString.
+/** Binding for cWebAdmin::GetContentTypeFromFileExt.
 Manual code required because ToLua generates an extra return value */
-static int tolua_AllToLua_cWebAdmin_GetURLEncodedString(lua_State * tolua_S)
+static int tolua_cWebAdmin_GetContentTypeFromFileExt(lua_State * tolua_S)
 {
 	// Check the param types:
 	cLuaState S(tolua_S);
 	if (
-		!S.CheckParamUserTable(1, "cWebAdmin") ||
+		// Don't care whether the first param is a cWebAdmin instance or class
 		!S.CheckParamString(2) ||
 		!S.CheckParamEnd(3)
 	)
@@ -2180,7 +2240,7 @@ static int tolua_AllToLua_cWebAdmin_GetURLEncodedString(lua_State * tolua_S)
 	S.GetStackValue(2, Input);
 
 	// Convert and return:
-	S.Push(cWebAdmin::GetURLEncodedString(Input));
+	S.Push(cWebAdmin::GetContentTypeFromFileExt(Input));
 	return 1;
 }
 
@@ -2188,20 +2248,112 @@ static int tolua_AllToLua_cWebAdmin_GetURLEncodedString(lua_State * tolua_S)
 
 
 
-static int tolua_cWebPlugin_GetTabNames(lua_State * tolua_S)
+/** Binding for cWebAdmin::GetHTMLEscapedString.
+Manual code required because ToLua generates an extra return value */
+static int tolua_cWebAdmin_GetHTMLEscapedString(lua_State * tolua_S)
 {
-	// Returns a map of (SafeTitle -> Title) for the plugin's web tabs.
-	auto self = reinterpret_cast<cWebPlugin *>(tolua_tousertype(tolua_S, 1, nullptr));
-	auto TabNames = self->GetTabNames();
-	lua_newtable(tolua_S);
-	int index = 1;
-	for (auto itr = TabNames.cbegin(), end = TabNames.cend(); itr != end; ++itr)
+	// Check the param types:
+	cLuaState S(tolua_S);
+	if (
+		// Don't care whether the first param is a cWebAdmin instance or class
+		!S.CheckParamString(2) ||
+		!S.CheckParamEnd(3)
+	)
 	{
-		tolua_pushstring(tolua_S, itr->second.c_str());  // Because the SafeTitle is supposed to be unique, use it as key
-		tolua_pushstring(tolua_S, itr->first.c_str());
-		lua_rawset(tolua_S, -3);
-		++index;
+		return 0;
+	}
+
+	// Get the parameters:
+	AString Input;
+	S.GetStackValue(2, Input);
+
+	// Convert and return:
+	S.Push(cWebAdmin::GetHTMLEscapedString(Input));
+	return 1;
+}
+
+
+
+
+
+/** Binding for cWebAdmin::GetPage. */
+static int tolua_cWebAdmin_GetPage(lua_State * tolua_S)
+{
+	/*
+	Function signature:
+	cWebAdmin:GetPage(a_HTTPRequest) ->
+	{
+		Content = "",       // Content generated by the plugin
+		ContentType = "",   // Content type generated by the plugin (default: "text/html")
+		UrlPath = "",       // URL path of the tab
+		TabTitle = "",      // Tab's title, as register via cWebAdmin:AddWebTab()
+		PluginName = "",    // Plugin's API name
+		PluginFolder = "",  // Plugin's folder name (display name)
+	}
+	*/
+
+	// Check the param types:
+	cLuaState S(tolua_S);
+	if (
+		// Don't care about first param, whether it's cWebAdmin instance or class
+		!S.CheckParamUserType(2, "HTTPRequest") ||
+		!S.CheckParamEnd(3)
+	)
+	{
+		return 0;
+	}
+
+	// Get the parameters:
+	HTTPRequest * request = nullptr;
+	if (!S.GetStackValue(2, request))
+	{
+		LOGWARNING("cWebAdmin:GetPage(): Cannot read the HTTPRequest parameter.");
+		return 0;
+	}
+
+	// Generate the page and push the results as a dictionary-table:
+	auto page = cRoot::Get()->GetWebAdmin()->GetPage(*request);
+	lua_createtable(S, 0, 6);
+	S.Push(page.Content);
+	lua_setfield(S, -2, "Content");
+	S.Push(page.ContentType);
+	lua_setfield(S, -2, "ContentType");
+	S.Push(page.TabUrlPath);
+	lua_setfield(S, -2, "UrlPath");
+	S.Push(page.TabTitle);
+	lua_setfield(S, -2, "TabTitle");
+	S.Push(page.PluginName);
+	lua_setfield(S, -2, "PluginName");
+	S.Push(cPluginManager::Get()->GetPluginFolderName(page.PluginName));
+	lua_setfield(S, -2, "PluginFolder");
+	return 1;
+}
+
+
+
+
+
+/** Binding for cWebAdmin::GetURLEncodedString.
+Manual code required because ToLua generates an extra return value */
+static int tolua_cWebAdmin_GetURLEncodedString(lua_State * tolua_S)
+{
+	// Check the param types:
+	cLuaState S(tolua_S);
+	if (
+		// Don't care whether the first param is a cWebAdmin instance or class
+		!S.CheckParamString(2) ||
+		!S.CheckParamEnd(3)
+	)
+	{
+		return 0;
 	}
+
+	// Get the parameters:
+	AString Input;
+	S.GetStackValue(2, Input);
+
+	// Convert and return:
+	S.Push(cWebAdmin::GetURLEncodedString(Input));
 	return 1;
 }
 
@@ -2624,6 +2776,79 @@ static int tolua_cLineBlockTracer_Trace(lua_State * tolua_S)
 
 
 
+static int tolua_cLuaWindow_new(lua_State * tolua_S)
+{
+	// Function signature:
+	// cLuaWindow:new(type, slotsX, slotsY, title)
+
+	// Check params:
+	cLuaState L(tolua_S);
+	if (
+		!L.CheckParamUserTable(1, "cLuaWindow") ||
+		!L.CheckParamNumber(2, 4) ||
+		!L.CheckParamString(5) ||
+		!L.CheckParamEnd(6)
+	)
+	{
+		return 0;
+	}
+
+	// Read params:
+	int windowType, slotsX, slotsY;
+	AString title;
+	if (!L.GetStackValues(2, windowType, slotsX, slotsY, title))
+	{
+		LOGWARNING("%s: Cannot read Lua parameters", __FUNCTION__);
+		L.LogStackValues();
+		L.LogStackTrace();
+	}
+
+	// Create the window and return it:
+	L.Push(new cLuaWindow(L, static_cast<cLuaWindow::WindowType>(windowType), slotsX, slotsY, title));
+	return 1;
+}
+
+
+
+
+
+static int tolua_cLuaWindow_new_local(lua_State * tolua_S)
+{
+	// Function signature:
+	// cLuaWindow:new(type, slotsX, slotsY, title)
+
+	// Check params:
+	cLuaState L(tolua_S);
+	if (
+		!L.CheckParamUserTable(1, "cLuaWindow") ||
+		!L.CheckParamNumber(2, 4) ||
+		!L.CheckParamString(5) ||
+		!L.CheckParamEnd(6)
+	)
+	{
+		return 0;
+	}
+
+	// Read params:
+	int windowType, slotsX, slotsY;
+	AString title;
+	if (!L.GetStackValues(2, windowType, slotsX, slotsY, title))
+	{
+		LOGWARNING("%s: Cannot read Lua parameters", __FUNCTION__);
+		L.LogStackValues();
+		L.LogStackTrace();
+	}
+
+	// Create the window, register it for GC and return it:
+	L.Push(new cLuaWindow(L, static_cast<cLuaWindow::WindowType>(windowType), slotsX, slotsY, title));
+	tolua_register_gc(tolua_S, lua_gettop(tolua_S));
+	return 1;
+}
+
+
+
+
+
 static int tolua_cRoot_GetBuildCommitID(lua_State * tolua_S)
 {
 	cLuaState L(tolua_S);
@@ -3167,7 +3392,7 @@ static int tolua_cBoundingBox_CalcLineIntersection(lua_State * a_LuaState)
 		const cBoundingBox * bbox;
 		if (!L.GetStackValues(1, bbox, pt1, pt2))  // Try the regular signature
 		{
-			L.LogStack();
+			L.LogStackValues();
 			tolua_error(a_LuaState, "Invalid function params. Expected either bbox:CalcLineIntersection(pt1, pt2) or cBoundingBox:CalcLineIntersection(min, max, pt1, pt2).", nullptr);
 			return 0;
 		}
@@ -3197,7 +3422,7 @@ static int tolua_cBoundingBox_Intersect(lua_State * a_LuaState)
 	const cBoundingBox * other;
 	if (!L.GetStackValues(1, self, other))
 	{
-		L.LogStack();
+		L.LogStackValues();
 		tolua_error(a_LuaState, "Invalid function params. Expected bbox:Intersect(otherBbox).", nullptr);
 		return 0;
 	}
@@ -3570,6 +3795,9 @@ void cManualBindings::Bind(lua_State * tolua_S)
 		tolua_endmodule(tolua_S);
 
 		tolua_beginmodule(tolua_S, "cLuaWindow");
+			tolua_function(tolua_S, "new",              tolua_cLuaWindow_new);
+			tolua_function(tolua_S, "new_local",        tolua_cLuaWindow_new_local);
+			tolua_function(tolua_S, ".call",            tolua_cLuaWindow_new_local);
 			tolua_function(tolua_S, "SetOnClosing",     tolua_SetObjectCallback<cLuaWindow, &cLuaWindow::SetOnClosing>);
 			tolua_function(tolua_S, "SetOnSlotChanged", tolua_SetObjectCallback<cLuaWindow, &cLuaWindow::SetOnSlotChanged>);
 		tolua_endmodule(tolua_S);
@@ -3590,7 +3818,6 @@ void cManualBindings::Bind(lua_State * tolua_S)
 		tolua_beginmodule(tolua_S, "cPlayer");
 			tolua_function(tolua_S, "GetPermissions",    tolua_cPlayer_GetPermissions);
 			tolua_function(tolua_S, "GetRestrictions",   tolua_cPlayer_GetRestrictions);
-			tolua_function(tolua_S, "OpenWindow",        tolua_cPlayer_OpenWindow);
 			tolua_function(tolua_S, "PermissionMatches", tolua_cPlayer_PermissionMatches);
 		tolua_endmodule(tolua_S);
 
@@ -3655,13 +3882,13 @@ void cManualBindings::Bind(lua_State * tolua_S)
 		tolua_endmodule(tolua_S);
 
 		tolua_beginmodule(tolua_S, "cWebAdmin");
-			tolua_function(tolua_S, "GetHTMLEscapedString", tolua_AllToLua_cWebAdmin_GetHTMLEscapedString);
-			tolua_function(tolua_S, "GetPlugins",           tolua_cWebAdmin_GetPlugins);
-			tolua_function(tolua_S, "GetURLEncodedString",  tolua_AllToLua_cWebAdmin_GetURLEncodedString);
-		tolua_endmodule(tolua_S);
-
-		tolua_beginmodule(tolua_S, "cWebPlugin");
-			tolua_function(tolua_S, "GetTabNames", tolua_cWebPlugin_GetTabNames);
+			tolua_function(tolua_S, "AddWebTab",                 tolua_cWebAdmin_AddWebTab);
+			tolua_function(tolua_S, "GetAllWebTabs",             tolua_cWebAdmin_GetAllWebTabs);
+			tolua_function(tolua_S, "GetBaseURL",                tolua_cWebAdmin_GetBaseURL);
+			tolua_function(tolua_S, "GetContentTypeFromFileExt", tolua_cWebAdmin_GetContentTypeFromFileExt);
+			tolua_function(tolua_S, "GetHTMLEscapedString",      tolua_cWebAdmin_GetHTMLEscapedString);
+			tolua_function(tolua_S, "GetPage",                   tolua_cWebAdmin_GetPage);
+			tolua_function(tolua_S, "GetURLEncodedString",       tolua_cWebAdmin_GetURLEncodedString);
 		tolua_endmodule(tolua_S);
 
 		tolua_beginmodule(tolua_S, "HTTPRequest");
diff --git a/src/Bindings/ManualBindings_World.cpp b/src/Bindings/ManualBindings_World.cpp
index 00d2169d8..b3170a636 100644
--- a/src/Bindings/ManualBindings_World.cpp
+++ b/src/Bindings/ManualBindings_World.cpp
@@ -103,7 +103,9 @@ static int tolua_cWorld_ChunkStay(lua_State * tolua_S)
 		return 0;
 	}
 
-	ChunkStay->Enable(*World->GetChunkMap(), 3, 4);
+	cLuaState::cCallbackPtr onChunkAvailable, onAllChunksAvailable;
+	L.GetStackValues(3, onChunkAvailable, onAllChunksAvailable);  // Callbacks may be unassigned at all - as a request to load / generate chunks
+	ChunkStay->Enable(*World->GetChunkMap(), std::move(onChunkAvailable), std::move(onAllChunksAvailable));
 	return 0;
 }
 
@@ -466,67 +468,41 @@ static int tolua_cWorld_PrepareChunk(lua_State * tolua_S)
 
 
 
-class cLuaWorldTask :
-	public cPluginLua::cResettable
-{
-public:
-	cLuaWorldTask(cPluginLua & a_Plugin, int a_FnRef) :
-		cPluginLua::cResettable(a_Plugin),
-		m_FnRef(a_FnRef)
-	{
-	}
-
-	void Run(cWorld & a_World)
-	{
-		cCSLock Lock(m_CSPlugin);
-		if (m_Plugin != nullptr)
-		{
-			m_Plugin->Call(m_FnRef, &a_World);
-		}
-	}
-
-protected:
-	int m_FnRef;
-};
-
-
-
-
-
 static int tolua_cWorld_QueueTask(lua_State * tolua_S)
 {
-	// Binding for cWorld::QueueTask
-	// Params: function
+	// Function signature:
+	// World:QueueTask(Callback)
 
-	// Retrieve the cPlugin from the LuaState:
-	cPluginLua * Plugin = cManualBindings::GetLuaPlugin(tolua_S);
-	if (Plugin == nullptr)
+	// Retrieve the args:
+	cLuaState L(tolua_S);
+	if (
+		!L.CheckParamUserType(1, "cWorld") ||
+		!L.CheckParamNumber  (2) ||
+		!L.CheckParamFunction(3)
+	)
 	{
-		// An error message has been already printed in GetLuaPlugin()
 		return 0;
 	}
-
-	// Retrieve the args:
-	cWorld * self = reinterpret_cast<cWorld *>(tolua_tousertype(tolua_S, 1, nullptr));
-	if (self == nullptr)
+	cWorld * World;
+	cLuaState::cCallbackSharedPtr Task;
+	if (!L.GetStackValues(1, World, Task))
 	{
-		return cManualBindings::lua_do_error(tolua_S, "Error in function call '#funcname#': Not called on an object instance");
+		return cManualBindings::lua_do_error(tolua_S, "Error in function call '#funcname#': Cannot read parameters");
 	}
-	if (!lua_isfunction(tolua_S, 2))
+	if (World == nullptr)
 	{
-		return cManualBindings::lua_do_error(tolua_S, "Error in function call '#funcname#': Expected a function for parameter #1");
+		return cManualBindings::lua_do_error(tolua_S, "Error in function call '#funcname#': Not called on an object instance");
 	}
-
-	// Create a reference to the function:
-	int FnRef = luaL_ref(tolua_S, LUA_REGISTRYINDEX);
-	if (FnRef == LUA_REFNIL)
+	if (!Task->IsValid())
 	{
-		return cManualBindings::lua_do_error(tolua_S, "Error in function call '#funcname#': Could not get function reference of parameter #1");
+		return cManualBindings::lua_do_error(tolua_S, "Error in function call '#funcname#': Could not store the callback parameter");
 	}
 
-	auto ResettableTask = std::make_shared<cLuaWorldTask>(*Plugin, FnRef);
-	Plugin->AddResettable(ResettableTask);
-	self->QueueTask(std::bind(&cLuaWorldTask::Run, ResettableTask, std::placeholders::_1));
+	World->QueueTask([Task](cWorld & a_World)
+		{
+			Task->Call(&a_World);
+		}
+	);
 	return 0;
 }
 
@@ -576,16 +552,8 @@ static int tolua_cWorld_SetSignLines(lua_State * tolua_S)
 
 static int tolua_cWorld_ScheduleTask(lua_State * tolua_S)
 {
-	// Binding for cWorld::ScheduleTask
-	// Params: function, Ticks
-
-	// Retrieve the cPlugin from the LuaState:
-	cPluginLua * Plugin = cManualBindings::GetLuaPlugin(tolua_S);
-	if (Plugin == nullptr)
-	{
-		// An error message has been already printed in GetLuaPlugin()
-		return 0;
-	}
+	// Function signature:
+	// World:ScheduleTask(NumTicks, Callback)
 
 	// Retrieve the args:
 	cLuaState L(tolua_S);
@@ -597,22 +565,27 @@ static int tolua_cWorld_ScheduleTask(lua_State * tolua_S)
 	{
 		return 0;
 	}
-	cWorld * World = reinterpret_cast<cWorld *>(tolua_tousertype(tolua_S, 1, nullptr));
+	cWorld * World;
+	int NumTicks;
+	auto Task = std::make_shared<cLuaState::cCallback>();
+	if (!L.GetStackValues(1, World, NumTicks, Task))
+	{
+		return cManualBindings::lua_do_error(tolua_S, "Error in function call '#funcname#': Cannot read parameters");
+	}
 	if (World == nullptr)
 	{
 		return cManualBindings::lua_do_error(tolua_S, "Error in function call '#funcname#': Not called on an object instance");
 	}
-
-	// Create a reference to the function:
-	int FnRef = luaL_ref(tolua_S, LUA_REGISTRYINDEX);
-	if (FnRef == LUA_REFNIL)
+	if (!Task->IsValid())
 	{
-		return cManualBindings::lua_do_error(tolua_S, "Error in function call '#funcname#': Could not get function reference of parameter #1");
+		return cManualBindings::lua_do_error(tolua_S, "Error in function call '#funcname#': Could not store the callback parameter");
 	}
 
-	auto ResettableTask = std::make_shared<cLuaWorldTask>(*Plugin, FnRef);
-	Plugin->AddResettable(ResettableTask);
-	World->ScheduleTask(static_cast<int>(tolua_tonumber(tolua_S, 2, 0)), std::bind(&cLuaWorldTask::Run, ResettableTask, std::placeholders::_1));
+	World->ScheduleTask(NumTicks, [Task](cWorld & a_World)
+		{
+			Task->Call(&a_World);
+		}
+	);
 	return 0;
 }
 
diff --git a/src/Bindings/Plugin.h b/src/Bindings/Plugin.h
index 3ee417361..3276fde67 100644
--- a/src/Bindings/Plugin.h
+++ b/src/Bindings/Plugin.h
@@ -110,21 +110,6 @@ public:
 	virtual bool OnWorldStarted             (cWorld & a_World) = 0;
 	virtual bool OnWorldTick                (cWorld & a_World, std::chrono::milliseconds a_Dt, std::chrono::milliseconds a_LastTickDurationMSec) = 0;
 
-	/** Handles the command split into a_Split, issued by player a_Player.
-	Command permissions have already been checked.
-	Returns true if command handled successfully. */
-	virtual bool HandleCommand(const AStringVector & a_Split, cPlayer & a_Player, const AString & a_FullCommand) = 0;
-
-	/** Handles the console command split into a_Split.
-	Returns true if command handled successfully. Output is to be sent to the a_Output callback. */
-	virtual bool HandleConsoleCommand(const AStringVector & a_Split, cCommandOutputCallback & a_Output, const AString & a_FullCommand) = 0;
-
-	/** All bound commands are to be removed, do any language-dependent cleanup here */
-	virtual void ClearCommands(void) {}
-
-	/** All bound console commands are to be removed, do any language-dependent cleanup here */
-	virtual void ClearConsoleCommands(void) {}
-
 	// tolua_begin
 	const AString & GetName(void) const  { return m_Name; }
 	void SetName(const AString & a_Name) { m_Name = a_Name; }
diff --git a/src/Bindings/PluginLua.cpp b/src/Bindings/PluginLua.cpp
index a266e6223..d1fc2ae4f 100644
--- a/src/Bindings/PluginLua.cpp
+++ b/src/Bindings/PluginLua.cpp
@@ -15,6 +15,8 @@
 #include "../CommandOutput.h"
 #include "PluginManager.h"
 #include "../Item.h"
+#include "../Root.h"
+#include "../WebAdmin.h"
 
 extern "C"
 {
@@ -43,7 +45,6 @@ cPluginLua::cPluginLua(const AString & a_PluginDirectory) :
 
 cPluginLua::~cPluginLua()
 {
-	cCSLock Lock(m_CriticalSection);
 	Close();
 }
 
@@ -53,45 +54,22 @@ cPluginLua::~cPluginLua()
 
 void cPluginLua::Close(void)
 {
-	cCSLock Lock(m_CriticalSection);
-
+	cOperation op(*this);
 	// If already closed, bail out:
-	if (!m_LuaState.IsValid())
+	if (!op().IsValid())
 	{
-		ASSERT(m_Resettables.empty());
 		ASSERT(m_HookMap.empty());
 		return;
 	}
 
-	// Remove the command bindings and web tabs:
-	ClearCommands();
-	ClearConsoleCommands();
-	ClearTabs();
-
-	// Notify and remove all m_Resettables (unlock the m_CriticalSection while resetting them):
-	cResettablePtrs resettables;
-	std::swap(m_Resettables, resettables);
-	{
-		cCSUnlock Unlock(Lock);
-		for (auto resettable: resettables)
-		{
-			resettable->Reset();
-		}
-		m_Resettables.clear();
-	}  // cCSUnlock (m_CriticalSection)
+	// Remove the web tabs:
+	ClearWebTabs();
 
 	// Release all the references in the hook map:
-	for (cHookMap::iterator itrH = m_HookMap.begin(), endH = m_HookMap.end(); itrH != endH; ++itrH)
-	{
-		for (cLuaRefs::iterator itrR = itrH->second.begin(), endR = itrH->second.end(); itrR != endR; ++itrR)
-		{
-			delete *itrR;
-		}  // for itrR - itrH->second[]
-	}  // for itrH - m_HookMap[]
 	m_HookMap.clear();
 
 	// Close the Lua engine:
-	m_LuaState.Close();
+	op().Close();
 }
 
 
@@ -100,8 +78,8 @@ void cPluginLua::Close(void)
 
 bool cPluginLua::Load(void)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
+	cOperation op(*this);
+	if (!op().IsValid())
 	{
 		m_LuaState.Create();
 		m_LuaState.RegisterAPILibs();
@@ -205,7 +183,7 @@ bool cPluginLua::Load(void)
 
 void cPluginLua::Unload(void)
 {
-	ClearTabs();
+	ClearWebTabs();
 	super::Unload();
 	Close();
 }
@@ -216,12 +194,12 @@ void cPluginLua::Unload(void)
 
 void cPluginLua::OnDisable(void)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.HasFunction("OnDisable"))
+	cOperation op(*this);
+	if (!op().HasFunction("OnDisable"))
 	{
 		return;
 	}
-	m_LuaState.Call("OnDisable");
+	op().Call("OnDisable");
 }
 
 
@@ -230,16 +208,7 @@ void cPluginLua::OnDisable(void)
 
 void cPluginLua::Tick(float a_Dt)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return;
-	}
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_TICK];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), a_Dt);
-	}
+	CallSimpleHooks(cPluginManager::HOOK_TICK, a_Dt);
 }
 
 
@@ -248,22 +217,7 @@ void cPluginLua::Tick(float a_Dt)
 
 bool cPluginLua::OnBlockSpread(cWorld & a_World, int a_BlockX, int a_BlockY, int a_BlockZ, eSpreadSource a_Source)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_BLOCK_SPREAD];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_World, a_BlockX, a_BlockY, a_BlockZ, a_Source, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_BLOCK_SPREAD, &a_World, a_BlockX, a_BlockY, a_BlockZ, a_Source);
 }
 
 
@@ -272,22 +226,7 @@ bool cPluginLua::OnBlockSpread(cWorld & a_World, int a_BlockX, int a_BlockY, int
 
 bool cPluginLua::OnBlockToPickups(cWorld & a_World, cEntity * a_Digger, int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta, cItems & a_Pickups)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_BLOCK_TO_PICKUPS];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_World, a_Digger, a_BlockX, a_BlockY, a_BlockZ, a_BlockType, a_BlockMeta, &a_Pickups, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_BLOCK_TO_PICKUPS, &a_World, a_Digger, a_BlockX, a_BlockY, a_BlockZ, a_BlockType, a_BlockMeta, &a_Pickups);
 }
 
 
@@ -296,22 +235,7 @@ bool cPluginLua::OnBlockToPickups(cWorld & a_World, cEntity * a_Digger, int a_Bl
 
 bool cPluginLua::OnBrewingCompleted(cWorld & a_World, cBrewingstandEntity & a_Brewingstand)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_BREWING_COMPLETED];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_World, &a_Brewingstand, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_BREWING_COMPLETED, &a_World, &a_Brewingstand);
 }
 
 
@@ -320,22 +244,7 @@ bool cPluginLua::OnBrewingCompleted(cWorld & a_World, cBrewingstandEntity & a_Br
 
 bool cPluginLua::OnBrewingCompleting(cWorld & a_World, cBrewingstandEntity & a_Brewingstand)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_BREWING_COMPLETING];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_World, &a_Brewingstand, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_BREWING_COMPLETING, &a_World, &a_Brewingstand);
 }
 
 
@@ -344,16 +253,16 @@ bool cPluginLua::OnBrewingCompleting(cWorld & a_World, cBrewingstandEntity & a_B
 
 bool cPluginLua::OnChat(cPlayer & a_Player, AString & a_Message)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
+	cOperation op(*this);
+	if (!op().IsValid())
 	{
 		return false;
 	}
 	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_CHAT];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
+	auto & hooks = m_HookMap[cPluginManager::HOOK_CHAT];
+	for (auto & hook: hooks)
 	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_Player, a_Message, cLuaState::Return, res, a_Message);
+		hook->Call(&a_Player, a_Message, cLuaState::Return, res, a_Message);
 		if (res)
 		{
 			return true;
@@ -368,22 +277,7 @@ bool cPluginLua::OnChat(cPlayer & a_Player, AString & a_Message)
 
 bool cPluginLua::OnChunkAvailable(cWorld & a_World, int a_ChunkX, int a_ChunkZ)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_CHUNK_AVAILABLE];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_World, a_ChunkX, a_ChunkZ, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_CHUNK_AVAILABLE, &a_World, a_ChunkX, a_ChunkZ);
 }
 
 
@@ -392,22 +286,7 @@ bool cPluginLua::OnChunkAvailable(cWorld & a_World, int a_ChunkX, int a_ChunkZ)
 
 bool cPluginLua::OnChunkGenerated(cWorld & a_World, int a_ChunkX, int a_ChunkZ, cChunkDesc * a_ChunkDesc)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_CHUNK_GENERATED];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_World, a_ChunkX, a_ChunkZ, a_ChunkDesc, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_CHUNK_GENERATED, &a_World, a_ChunkX, a_ChunkZ, a_ChunkDesc);
 }
 
 
@@ -416,22 +295,7 @@ bool cPluginLua::OnChunkGenerated(cWorld & a_World, int a_ChunkX, int a_ChunkZ,
 
 bool cPluginLua::OnChunkGenerating(cWorld & a_World, int a_ChunkX, int a_ChunkZ, cChunkDesc * a_ChunkDesc)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_CHUNK_GENERATING];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_World, a_ChunkX, a_ChunkZ, a_ChunkDesc, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_CHUNK_GENERATING, &a_World, a_ChunkX, a_ChunkZ, a_ChunkDesc);
 }
 
 
@@ -440,22 +304,7 @@ bool cPluginLua::OnChunkGenerating(cWorld & a_World, int a_ChunkX, int a_ChunkZ,
 
 bool cPluginLua::OnChunkUnloaded(cWorld & a_World, int a_ChunkX, int a_ChunkZ)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_CHUNK_UNLOADED];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_World, a_ChunkX, a_ChunkZ, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_CHUNK_UNLOADED, &a_World, a_ChunkX, a_ChunkZ);
 }
 
 
@@ -464,22 +313,7 @@ bool cPluginLua::OnChunkUnloaded(cWorld & a_World, int a_ChunkX, int a_ChunkZ)
 
 bool cPluginLua::OnChunkUnloading(cWorld & a_World, int a_ChunkX, int a_ChunkZ)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_CHUNK_UNLOADING];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_World, a_ChunkX, a_ChunkZ, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_CHUNK_UNLOADING, &a_World, a_ChunkX, a_ChunkZ);
 }
 
 
@@ -488,22 +322,7 @@ bool cPluginLua::OnChunkUnloading(cWorld & a_World, int a_ChunkX, int a_ChunkZ)
 
 bool cPluginLua::OnCollectingPickup(cPlayer & a_Player, cPickup & a_Pickup)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_COLLECTING_PICKUP];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_Player, &a_Pickup, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_COLLECTING_PICKUP, &a_Player, &a_Pickup);
 }
 
 
@@ -512,22 +331,7 @@ bool cPluginLua::OnCollectingPickup(cPlayer & a_Player, cPickup & a_Pickup)
 
 bool cPluginLua::OnCraftingNoRecipe(cPlayer & a_Player, cCraftingGrid & a_Grid, cCraftingRecipe & a_Recipe)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_CRAFTING_NO_RECIPE];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_Player, &a_Grid, &a_Recipe, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_CRAFTING_NO_RECIPE, &a_Player, &a_Grid, &a_Recipe);
 }
 
 
@@ -536,22 +340,7 @@ bool cPluginLua::OnCraftingNoRecipe(cPlayer & a_Player, cCraftingGrid & a_Grid,
 
 bool cPluginLua::OnDisconnect(cClientHandle & a_Client, const AString & a_Reason)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_DISCONNECT];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_Client, a_Reason, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_DISCONNECT, &a_Client, a_Reason);
 }
 
 
@@ -560,22 +349,7 @@ bool cPluginLua::OnDisconnect(cClientHandle & a_Client, const AString & a_Reason
 
 bool cPluginLua::OnEntityAddEffect(cEntity & a_Entity, int a_EffectType, int a_EffectDurationTicks, int a_EffectIntensity, double a_DistanceModifier)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_ENTITY_ADD_EFFECT];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_Entity, a_EffectType, a_EffectDurationTicks, a_EffectIntensity, a_DistanceModifier, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_ENTITY_ADD_EFFECT, &a_Entity, a_EffectType, a_EffectDurationTicks, a_EffectIntensity, a_DistanceModifier);
 }
 
 
@@ -584,22 +358,7 @@ bool cPluginLua::OnEntityAddEffect(cEntity & a_Entity, int a_EffectType, int a_E
 
 bool cPluginLua::OnEntityChangingWorld(cEntity & a_Entity, cWorld & a_World)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_ENTITY_CHANGING_WORLD];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_Entity, &a_World, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_ENTITY_CHANGING_WORLD, &a_Entity, &a_World);
 }
 
 
@@ -608,22 +367,7 @@ bool cPluginLua::OnEntityChangingWorld(cEntity & a_Entity, cWorld & a_World)
 
 bool cPluginLua::OnEntityChangedWorld(cEntity & a_Entity, cWorld & a_World)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_ENTITY_CHANGED_WORLD];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_Entity, &a_World, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_ENTITY_CHANGED_WORLD, &a_Entity, &a_World);
 }
 
 
@@ -632,16 +376,16 @@ bool cPluginLua::OnEntityChangedWorld(cEntity & a_Entity, cWorld & a_World)
 
 bool cPluginLua::OnExecuteCommand(cPlayer * a_Player, const AStringVector & a_Split, const AString & a_EntireCommand, cPluginManager::CommandResult & a_Result)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
+	cOperation op(*this);
+	if (!op().IsValid())
 	{
 		return false;
 	}
 	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_EXECUTE_COMMAND];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
+	auto & hooks = m_HookMap[cPluginManager::HOOK_EXECUTE_COMMAND];
+	for (auto & hook: hooks)
 	{
-		m_LuaState.Call(static_cast<int>(**itr), a_Player, a_Split, a_EntireCommand, cLuaState::Return, res, a_Result);
+		hook->Call(a_Player, a_Split, a_EntireCommand, cLuaState::Return, res, a_Result);
 		if (res)
 		{
 			return true;
@@ -656,26 +400,26 @@ bool cPluginLua::OnExecuteCommand(cPlayer * a_Player, const AStringVector & a_Sp
 
 bool cPluginLua::OnExploded(cWorld & a_World, double a_ExplosionSize, bool a_CanCauseFire, double a_X, double a_Y, double a_Z, eExplosionSource a_Source, void * a_SourceData)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
+	cOperation op(*this);
+	if (!op().IsValid())
 	{
 		return false;
 	}
 	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_EXPLODED];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
+	auto & hooks = m_HookMap[cPluginManager::HOOK_EXPLODED];
+	for (auto & hook: hooks)
 	{
 		switch (a_Source)
 		{
-			case esBed:           m_LuaState.Call(static_cast<int>(**itr), &a_World, a_ExplosionSize, a_CanCauseFire, a_X, a_Y, a_Z, a_Source, reinterpret_cast<Vector3i *>            (a_SourceData), cLuaState::Return, res); break;
-			case esEnderCrystal:  m_LuaState.Call(static_cast<int>(**itr), &a_World, a_ExplosionSize, a_CanCauseFire, a_X, a_Y, a_Z, a_Source, reinterpret_cast<cEntity *>             (a_SourceData), cLuaState::Return, res); break;
-			case esGhastFireball: m_LuaState.Call(static_cast<int>(**itr), &a_World, a_ExplosionSize, a_CanCauseFire, a_X, a_Y, a_Z, a_Source, reinterpret_cast<cGhastFireballEntity *>(a_SourceData), cLuaState::Return, res); break;
-			case esMonster:       m_LuaState.Call(static_cast<int>(**itr), &a_World, a_ExplosionSize, a_CanCauseFire, a_X, a_Y, a_Z, a_Source, reinterpret_cast<cMonster *>            (a_SourceData), cLuaState::Return, res); break;
-			case esOther:         m_LuaState.Call(static_cast<int>(**itr), &a_World, a_ExplosionSize, a_CanCauseFire, a_X, a_Y, a_Z, a_Source, cLuaState::Return, res); break;
-			case esPlugin:        m_LuaState.Call(static_cast<int>(**itr), &a_World, a_ExplosionSize, a_CanCauseFire, a_X, a_Y, a_Z, a_Source, cLuaState::Return, res); break;
-			case esPrimedTNT:     m_LuaState.Call(static_cast<int>(**itr), &a_World, a_ExplosionSize, a_CanCauseFire, a_X, a_Y, a_Z, a_Source, reinterpret_cast<cTNTEntity *>          (a_SourceData), cLuaState::Return, res); break;
-			case esWitherBirth:   m_LuaState.Call(static_cast<int>(**itr), &a_World, a_ExplosionSize, a_CanCauseFire, a_X, a_Y, a_Z, a_Source, reinterpret_cast<cMonster *>            (a_SourceData), cLuaState::Return, res); break;
-			case esWitherSkull:   m_LuaState.Call(static_cast<int>(**itr), &a_World, a_ExplosionSize, a_CanCauseFire, a_X, a_Y, a_Z, a_Source, reinterpret_cast<cWitherSkullEntity *>  (a_SourceData), cLuaState::Return, res); break;
+			case esBed:           hook->Call(&a_World, a_ExplosionSize, a_CanCauseFire, a_X, a_Y, a_Z, a_Source, reinterpret_cast<Vector3i *>            (a_SourceData), cLuaState::Return, res); break;
+			case esEnderCrystal:  hook->Call(&a_World, a_ExplosionSize, a_CanCauseFire, a_X, a_Y, a_Z, a_Source, reinterpret_cast<cEntity *>             (a_SourceData), cLuaState::Return, res); break;
+			case esGhastFireball: hook->Call(&a_World, a_ExplosionSize, a_CanCauseFire, a_X, a_Y, a_Z, a_Source, reinterpret_cast<cGhastFireballEntity *>(a_SourceData), cLuaState::Return, res); break;
+			case esMonster:       hook->Call(&a_World, a_ExplosionSize, a_CanCauseFire, a_X, a_Y, a_Z, a_Source, reinterpret_cast<cMonster *>            (a_SourceData), cLuaState::Return, res); break;
+			case esOther:         hook->Call(&a_World, a_ExplosionSize, a_CanCauseFire, a_X, a_Y, a_Z, a_Source, cLuaState::Return, res); break;
+			case esPlugin:        hook->Call(&a_World, a_ExplosionSize, a_CanCauseFire, a_X, a_Y, a_Z, a_Source, cLuaState::Return, res); break;
+			case esPrimedTNT:     hook->Call(&a_World, a_ExplosionSize, a_CanCauseFire, a_X, a_Y, a_Z, a_Source, reinterpret_cast<cTNTEntity *>          (a_SourceData), cLuaState::Return, res); break;
+			case esWitherBirth:   hook->Call(&a_World, a_ExplosionSize, a_CanCauseFire, a_X, a_Y, a_Z, a_Source, reinterpret_cast<cMonster *>            (a_SourceData), cLuaState::Return, res); break;
+			case esWitherSkull:   hook->Call(&a_World, a_ExplosionSize, a_CanCauseFire, a_X, a_Y, a_Z, a_Source, reinterpret_cast<cWitherSkullEntity *>  (a_SourceData), cLuaState::Return, res); break;
 			case esMax:
 			{
 				ASSERT(!"Invalid explosion source");
@@ -696,26 +440,26 @@ bool cPluginLua::OnExploded(cWorld & a_World, double a_ExplosionSize, bool a_Can
 
 bool cPluginLua::OnExploding(cWorld & a_World, double & a_ExplosionSize, bool & a_CanCauseFire, double a_X, double a_Y, double a_Z, eExplosionSource a_Source, void * a_SourceData)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
+	cOperation op(*this);
+	if (!op().IsValid())
 	{
 		return false;
 	}
 	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_EXPLODING];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
+	auto & hooks = m_HookMap[cPluginManager::HOOK_EXPLODING];
+	for (auto & hook: hooks)
 	{
 		switch (a_Source)
 		{
-			case esBed:           m_LuaState.Call(static_cast<int>(**itr), &a_World, a_ExplosionSize, a_CanCauseFire, a_X, a_Y, a_Z, a_Source, reinterpret_cast<Vector3i *>            (a_SourceData), cLuaState::Return, res, a_CanCauseFire, a_ExplosionSize); break;
-			case esEnderCrystal:  m_LuaState.Call(static_cast<int>(**itr), &a_World, a_ExplosionSize, a_CanCauseFire, a_X, a_Y, a_Z, a_Source, reinterpret_cast<cEntity *>             (a_SourceData), cLuaState::Return, res, a_CanCauseFire, a_ExplosionSize); break;
-			case esGhastFireball: m_LuaState.Call(static_cast<int>(**itr), &a_World, a_ExplosionSize, a_CanCauseFire, a_X, a_Y, a_Z, a_Source, reinterpret_cast<cGhastFireballEntity *>(a_SourceData), cLuaState::Return, res, a_CanCauseFire, a_ExplosionSize); break;
-			case esMonster:       m_LuaState.Call(static_cast<int>(**itr), &a_World, a_ExplosionSize, a_CanCauseFire, a_X, a_Y, a_Z, a_Source, reinterpret_cast<cMonster *>            (a_SourceData), cLuaState::Return, res, a_CanCauseFire, a_ExplosionSize); break;
-			case esOther:         m_LuaState.Call(static_cast<int>(**itr), &a_World, a_ExplosionSize, a_CanCauseFire, a_X, a_Y, a_Z, a_Source,                                                         cLuaState::Return, res, a_CanCauseFire, a_ExplosionSize); break;
-			case esPlugin:        m_LuaState.Call(static_cast<int>(**itr), &a_World, a_ExplosionSize, a_CanCauseFire, a_X, a_Y, a_Z, a_Source,                                                         cLuaState::Return, res, a_CanCauseFire, a_ExplosionSize); break;
-			case esPrimedTNT:     m_LuaState.Call(static_cast<int>(**itr), &a_World, a_ExplosionSize, a_CanCauseFire, a_X, a_Y, a_Z, a_Source, reinterpret_cast<cTNTEntity *>          (a_SourceData), cLuaState::Return, res, a_CanCauseFire, a_ExplosionSize); break;
-			case esWitherBirth:   m_LuaState.Call(static_cast<int>(**itr), &a_World, a_ExplosionSize, a_CanCauseFire, a_X, a_Y, a_Z, a_Source, reinterpret_cast<cMonster *>            (a_SourceData), cLuaState::Return, res, a_CanCauseFire, a_ExplosionSize); break;
-			case esWitherSkull:   m_LuaState.Call(static_cast<int>(**itr), &a_World, a_ExplosionSize, a_CanCauseFire, a_X, a_Y, a_Z, a_Source, reinterpret_cast<cWitherSkullEntity *>  (a_SourceData), cLuaState::Return, res, a_CanCauseFire, a_ExplosionSize); break;
+			case esBed:           hook->Call(&a_World, a_ExplosionSize, a_CanCauseFire, a_X, a_Y, a_Z, a_Source, reinterpret_cast<Vector3i *>            (a_SourceData), cLuaState::Return, res, a_CanCauseFire, a_ExplosionSize); break;
+			case esEnderCrystal:  hook->Call(&a_World, a_ExplosionSize, a_CanCauseFire, a_X, a_Y, a_Z, a_Source, reinterpret_cast<cEntity *>             (a_SourceData), cLuaState::Return, res, a_CanCauseFire, a_ExplosionSize); break;
+			case esGhastFireball: hook->Call(&a_World, a_ExplosionSize, a_CanCauseFire, a_X, a_Y, a_Z, a_Source, reinterpret_cast<cGhastFireballEntity *>(a_SourceData), cLuaState::Return, res, a_CanCauseFire, a_ExplosionSize); break;
+			case esMonster:       hook->Call(&a_World, a_ExplosionSize, a_CanCauseFire, a_X, a_Y, a_Z, a_Source, reinterpret_cast<cMonster *>            (a_SourceData), cLuaState::Return, res, a_CanCauseFire, a_ExplosionSize); break;
+			case esOther:         hook->Call(&a_World, a_ExplosionSize, a_CanCauseFire, a_X, a_Y, a_Z, a_Source,                                                         cLuaState::Return, res, a_CanCauseFire, a_ExplosionSize); break;
+			case esPlugin:        hook->Call(&a_World, a_ExplosionSize, a_CanCauseFire, a_X, a_Y, a_Z, a_Source,                                                         cLuaState::Return, res, a_CanCauseFire, a_ExplosionSize); break;
+			case esPrimedTNT:     hook->Call(&a_World, a_ExplosionSize, a_CanCauseFire, a_X, a_Y, a_Z, a_Source, reinterpret_cast<cTNTEntity *>          (a_SourceData), cLuaState::Return, res, a_CanCauseFire, a_ExplosionSize); break;
+			case esWitherBirth:   hook->Call(&a_World, a_ExplosionSize, a_CanCauseFire, a_X, a_Y, a_Z, a_Source, reinterpret_cast<cMonster *>            (a_SourceData), cLuaState::Return, res, a_CanCauseFire, a_ExplosionSize); break;
+			case esWitherSkull:   hook->Call(&a_World, a_ExplosionSize, a_CanCauseFire, a_X, a_Y, a_Z, a_Source, reinterpret_cast<cWitherSkullEntity *>  (a_SourceData), cLuaState::Return, res, a_CanCauseFire, a_ExplosionSize); break;
 			case esMax:
 			{
 				ASSERT(!"Invalid explosion source");
@@ -736,22 +480,7 @@ bool cPluginLua::OnExploding(cWorld & a_World, double & a_ExplosionSize, bool &
 
 bool cPluginLua::OnHandshake(cClientHandle & a_Client, const AString & a_Username)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_HANDSHAKE];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_Client, a_Username, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_HANDSHAKE, &a_Client, a_Username);
 }
 
 
@@ -760,22 +489,7 @@ bool cPluginLua::OnHandshake(cClientHandle & a_Client, const AString & a_Usernam
 
 bool cPluginLua::OnHopperPullingItem(cWorld & a_World, cHopperEntity & a_Hopper, int a_DstSlotNum, cBlockEntityWithItems & a_SrcEntity, int a_SrcSlotNum)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_HOPPER_PULLING_ITEM];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_World, &a_Hopper, a_DstSlotNum, &a_SrcEntity, a_SrcSlotNum, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_HOPPER_PULLING_ITEM, &a_World, &a_Hopper, a_DstSlotNum, &a_SrcEntity, a_SrcSlotNum);
 }
 
 
@@ -784,22 +498,7 @@ bool cPluginLua::OnHopperPullingItem(cWorld & a_World, cHopperEntity & a_Hopper,
 
 bool cPluginLua::OnHopperPushingItem(cWorld & a_World, cHopperEntity & a_Hopper, int a_SrcSlotNum, cBlockEntityWithItems & a_DstEntity, int a_DstSlotNum)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_HOPPER_PUSHING_ITEM];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_World, &a_Hopper, a_SrcSlotNum, &a_DstEntity, a_DstSlotNum, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_HOPPER_PUSHING_ITEM, &a_World, &a_Hopper, a_SrcSlotNum, &a_DstEntity, a_DstSlotNum);
 }
 
 
@@ -808,16 +507,16 @@ bool cPluginLua::OnHopperPushingItem(cWorld & a_World, cHopperEntity & a_Hopper,
 
 bool cPluginLua::OnKilled(cEntity & a_Victim, TakeDamageInfo & a_TDI, AString & a_DeathMessage)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
+	cOperation op(*this);
+	if (!op().IsValid())
 	{
 		return false;
 	}
 	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_KILLED];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
+	auto & hooks = m_HookMap[cPluginManager::HOOK_KILLED];
+	for (auto & hook: hooks)
 	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_Victim, &a_TDI, a_DeathMessage, cLuaState::Return, res, a_DeathMessage);
+		hook->Call(&a_Victim, &a_TDI, a_DeathMessage, cLuaState::Return, res, a_DeathMessage);
 		if (res)
 		{
 			return true;
@@ -832,22 +531,7 @@ bool cPluginLua::OnKilled(cEntity & a_Victim, TakeDamageInfo & a_TDI, AString &
 
 bool cPluginLua::OnKilling(cEntity & a_Victim, cEntity * a_Killer, TakeDamageInfo & a_TDI)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_KILLING];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_Victim, a_Killer, &a_TDI, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_KILLING, &a_Victim, a_Killer, &a_TDI);
 }
 
 
@@ -856,22 +540,7 @@ bool cPluginLua::OnKilling(cEntity & a_Victim, cEntity * a_Killer, TakeDamageInf
 
 bool cPluginLua::OnLogin(cClientHandle & a_Client, UInt32 a_ProtocolVersion, const AString & a_Username)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_LOGIN];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_Client, a_ProtocolVersion, a_Username, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_LOGIN, &a_Client, a_ProtocolVersion, a_Username);
 }
 
 
@@ -880,22 +549,7 @@ bool cPluginLua::OnLogin(cClientHandle & a_Client, UInt32 a_ProtocolVersion, con
 
 bool cPluginLua::OnPlayerAnimation(cPlayer & a_Player, int a_Animation)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_PLAYER_ANIMATION];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_Player, a_Animation, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_PLAYER_ANIMATION, &a_Player, a_Animation);
 }
 
 
@@ -904,22 +558,7 @@ bool cPluginLua::OnPlayerAnimation(cPlayer & a_Player, int a_Animation)
 
 bool cPluginLua::OnPlayerBreakingBlock(cPlayer & a_Player, int a_BlockX, int a_BlockY, int a_BlockZ, char a_BlockFace, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_PLAYER_BREAKING_BLOCK];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_Player, a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, a_BlockType, a_BlockMeta, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_PLAYER_BREAKING_BLOCK, &a_Player, a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, a_BlockType, a_BlockMeta);
 }
 
 
@@ -928,22 +567,7 @@ bool cPluginLua::OnPlayerBreakingBlock(cPlayer & a_Player, int a_BlockX, int a_B
 
 bool cPluginLua::OnPlayerBrokenBlock(cPlayer & a_Player, int a_BlockX, int a_BlockY, int a_BlockZ, char a_BlockFace, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_PLAYER_BROKEN_BLOCK];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_Player, a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, a_BlockType, a_BlockMeta, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_PLAYER_BROKEN_BLOCK, &a_Player, a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, a_BlockType, a_BlockMeta);
 }
 
 
@@ -952,22 +576,7 @@ bool cPluginLua::OnPlayerBrokenBlock(cPlayer & a_Player, int a_BlockX, int a_Blo
 
 bool cPluginLua::OnPlayerDestroyed(cPlayer & a_Player)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_PLAYER_DESTROYED];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_Player, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_PLAYER_DESTROYED, &a_Player);
 }
 
 
@@ -976,22 +585,7 @@ bool cPluginLua::OnPlayerDestroyed(cPlayer & a_Player)
 
 bool cPluginLua::OnPlayerEating(cPlayer & a_Player)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_PLAYER_EATING];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_Player, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_PLAYER_EATING, &a_Player);
 }
 
 
@@ -1000,22 +594,7 @@ bool cPluginLua::OnPlayerEating(cPlayer & a_Player)
 
 bool cPluginLua::OnPlayerFoodLevelChange(cPlayer & a_Player, int a_NewFoodLevel)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_PLAYER_FOOD_LEVEL_CHANGE];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_Player, a_NewFoodLevel, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_PLAYER_FOOD_LEVEL_CHANGE, &a_Player, a_NewFoodLevel);
 }
 
 
@@ -1024,22 +603,7 @@ bool cPluginLua::OnPlayerFoodLevelChange(cPlayer & a_Player, int a_NewFoodLevel)
 
 bool cPluginLua::OnPlayerFished(cPlayer & a_Player, const cItems & a_Reward)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_PLAYER_FISHED];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_Player, a_Reward, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_PLAYER_FISHED, &a_Player, a_Reward);
 }
 
 
@@ -1048,22 +612,7 @@ bool cPluginLua::OnPlayerFished(cPlayer & a_Player, const cItems & a_Reward)
 
 bool cPluginLua::OnPlayerFishing(cPlayer & a_Player, cItems & a_Reward)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_PLAYER_FISHING];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_Player, &a_Reward, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_PLAYER_FISHING, &a_Player, &a_Reward);
 }
 
 
@@ -1072,22 +621,7 @@ bool cPluginLua::OnPlayerFishing(cPlayer & a_Player, cItems & a_Reward)
 
 bool cPluginLua::OnPlayerJoined(cPlayer & a_Player)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_PLAYER_JOINED];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_Player, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_PLAYER_JOINED, &a_Player);
 }
 
 
@@ -1096,22 +630,7 @@ bool cPluginLua::OnPlayerJoined(cPlayer & a_Player)
 
 bool cPluginLua::OnPlayerLeftClick(cPlayer & a_Player, int a_BlockX, int a_BlockY, int a_BlockZ, char a_BlockFace, char a_Status)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_PLAYER_LEFT_CLICK];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_Player, a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, a_Status, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_PLAYER_LEFT_CLICK, &a_Player, a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, a_Status);
 }
 
 
@@ -1120,22 +639,7 @@ bool cPluginLua::OnPlayerLeftClick(cPlayer & a_Player, int a_BlockX, int a_Block
 
 bool cPluginLua::OnPlayerMoving(cPlayer & a_Player, const Vector3d & a_OldPosition, const Vector3d & a_NewPosition)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_PLAYER_MOVING];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_Player, a_OldPosition, a_NewPosition, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_PLAYER_MOVING, &a_Player, a_OldPosition, a_NewPosition);
 }
 
 
@@ -1144,22 +648,7 @@ bool cPluginLua::OnPlayerMoving(cPlayer & a_Player, const Vector3d & a_OldPositi
 
 bool cPluginLua::OnEntityTeleport(cEntity & a_Entity, const Vector3d & a_OldPosition, const Vector3d & a_NewPosition)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_ENTITY_TELEPORT];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_Entity, a_OldPosition, a_NewPosition, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_ENTITY_TELEPORT, &a_Entity, a_OldPosition, a_NewPosition);
 }
 
 
@@ -1168,27 +657,11 @@ bool cPluginLua::OnEntityTeleport(cEntity & a_Entity, const Vector3d & a_OldPosi
 
 bool cPluginLua::OnPlayerPlacedBlock(cPlayer & a_Player, const sSetBlock & a_BlockChange)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_PLAYER_PLACED_BLOCK];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_Player,
-			a_BlockChange.GetX(), a_BlockChange.GetY(), a_BlockChange.GetZ(),
-			a_BlockChange.m_BlockType, a_BlockChange.m_BlockMeta,
-			cLuaState::Return,
-			res
-		);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_PLAYER_PLACED_BLOCK,
+		&a_Player,
+		a_BlockChange.GetX(), a_BlockChange.GetY(), a_BlockChange.GetZ(),
+		a_BlockChange.m_BlockType, a_BlockChange.m_BlockMeta
+	);
 }
 
 
@@ -1197,27 +670,11 @@ bool cPluginLua::OnPlayerPlacedBlock(cPlayer & a_Player, const sSetBlock & a_Blo
 
 bool cPluginLua::OnPlayerPlacingBlock(cPlayer & a_Player, const sSetBlock & a_BlockChange)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_PLAYER_PLACING_BLOCK];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_Player,
-			a_BlockChange.GetX(), a_BlockChange.GetY(), a_BlockChange.GetZ(),
-			a_BlockChange.m_BlockType, a_BlockChange.m_BlockMeta,
-			cLuaState::Return,
-			res
-		);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_PLAYER_PLACING_BLOCK,
+		&a_Player,
+		a_BlockChange.GetX(), a_BlockChange.GetY(), a_BlockChange.GetZ(),
+		a_BlockChange.m_BlockType, a_BlockChange.m_BlockMeta
+	);
 }
 
 
@@ -1226,22 +683,7 @@ bool cPluginLua::OnPlayerPlacingBlock(cPlayer & a_Player, const sSetBlock & a_Bl
 
 bool cPluginLua::OnPlayerRightClick(cPlayer & a_Player, int a_BlockX, int a_BlockY, int a_BlockZ, char a_BlockFace, int a_CursorX, int a_CursorY, int a_CursorZ)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_PLAYER_RIGHT_CLICK];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_Player, a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, a_CursorX, a_CursorY, a_CursorZ, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_PLAYER_RIGHT_CLICK, &a_Player, a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, a_CursorX, a_CursorY, a_CursorZ);
 }
 
 
@@ -1250,22 +692,7 @@ bool cPluginLua::OnPlayerRightClick(cPlayer & a_Player, int a_BlockX, int a_Bloc
 
 bool cPluginLua::OnPlayerRightClickingEntity(cPlayer & a_Player, cEntity & a_Entity)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_PLAYER_RIGHT_CLICKING_ENTITY];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_Player, &a_Entity, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_PLAYER_RIGHT_CLICKING_ENTITY, &a_Player, &a_Entity);
 }
 
 
@@ -1274,22 +701,7 @@ bool cPluginLua::OnPlayerRightClickingEntity(cPlayer & a_Player, cEntity & a_Ent
 
 bool cPluginLua::OnPlayerShooting(cPlayer & a_Player)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_PLAYER_SHOOTING];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_Player, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_PLAYER_SHOOTING, &a_Player);
 }
 
 
@@ -1298,22 +710,7 @@ bool cPluginLua::OnPlayerShooting(cPlayer & a_Player)
 
 bool cPluginLua::OnPlayerSpawned(cPlayer & a_Player)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_PLAYER_SPAWNED];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_Player, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_PLAYER_SPAWNED, &a_Player);
 }
 
 
@@ -1322,22 +719,7 @@ bool cPluginLua::OnPlayerSpawned(cPlayer & a_Player)
 
 bool cPluginLua::OnPlayerTossingItem(cPlayer & a_Player)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_PLAYER_TOSSING_ITEM];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_Player, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_PLAYER_TOSSING_ITEM, &a_Player);
 }
 
 
@@ -1346,22 +728,7 @@ bool cPluginLua::OnPlayerTossingItem(cPlayer & a_Player)
 
 bool cPluginLua::OnPlayerUsedBlock(cPlayer & a_Player, int a_BlockX, int a_BlockY, int a_BlockZ, char a_BlockFace, int a_CursorX, int a_CursorY, int a_CursorZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_PLAYER_USED_BLOCK];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_Player, a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, a_CursorX, a_CursorY, a_CursorZ, a_BlockType, a_BlockMeta, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_PLAYER_USED_BLOCK, &a_Player, a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, a_CursorX, a_CursorY, a_CursorZ, a_BlockType, a_BlockMeta);
 }
 
 
@@ -1370,22 +737,7 @@ bool cPluginLua::OnPlayerUsedBlock(cPlayer & a_Player, int a_BlockX, int a_Block
 
 bool cPluginLua::OnPlayerUsedItem(cPlayer & a_Player, int a_BlockX, int a_BlockY, int a_BlockZ, char a_BlockFace, int a_CursorX, int a_CursorY, int a_CursorZ)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_PLAYER_USED_ITEM];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_Player, a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, a_CursorX, a_CursorY, a_CursorZ, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_PLAYER_USED_ITEM, &a_Player, a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, a_CursorX, a_CursorY, a_CursorZ);
 }
 
 
@@ -1394,22 +746,7 @@ bool cPluginLua::OnPlayerUsedItem(cPlayer & a_Player, int a_BlockX, int a_BlockY
 
 bool cPluginLua::OnPlayerUsingBlock(cPlayer & a_Player, int a_BlockX, int a_BlockY, int a_BlockZ, char a_BlockFace, int a_CursorX, int a_CursorY, int a_CursorZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_PLAYER_USING_BLOCK];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_Player, a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, a_CursorX, a_CursorY, a_CursorZ, a_BlockType, a_BlockMeta, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_PLAYER_USING_BLOCK, &a_Player, a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, a_CursorX, a_CursorY, a_CursorZ, a_BlockType, a_BlockMeta);
 }
 
 
@@ -1418,22 +755,7 @@ bool cPluginLua::OnPlayerUsingBlock(cPlayer & a_Player, int a_BlockX, int a_Bloc
 
 bool cPluginLua::OnPlayerUsingItem(cPlayer & a_Player, int a_BlockX, int a_BlockY, int a_BlockZ, char a_BlockFace, int a_CursorX, int a_CursorY, int a_CursorZ)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_PLAYER_USING_ITEM];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_Player, a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, a_CursorX, a_CursorY, a_CursorZ, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_PLAYER_USING_ITEM, &a_Player, a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, a_CursorX, a_CursorY, a_CursorZ);
 }
 
 
@@ -1442,22 +764,7 @@ bool cPluginLua::OnPlayerUsingItem(cPlayer & a_Player, int a_BlockX, int a_Block
 
 bool cPluginLua::OnPluginMessage(cClientHandle & a_Client, const AString & a_Channel, const AString & a_Message)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_PLUGIN_MESSAGE];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_Client, a_Channel, a_Message, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_PLUGIN_MESSAGE, &a_Client, a_Channel, a_Message);
 }
 
 
@@ -1466,17 +773,17 @@ bool cPluginLua::OnPluginMessage(cClientHandle & a_Client, const AString & a_Cha
 
 bool cPluginLua::OnPluginsLoaded(void)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
+	cOperation op(*this);
+	if (!op().IsValid())
 	{
 		return false;
 	}
 	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_PLUGINS_LOADED];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
+	auto & hooks = m_HookMap[cPluginManager::HOOK_PLUGINS_LOADED];
+	for (auto & hook: hooks)
 	{
 		bool ret = false;
-		m_LuaState.Call(static_cast<int>(**itr), cLuaState::Return, ret);
+		hook->Call(cLuaState::Return, ret);
 		res = res || ret;
 	}
 	return res;
@@ -1488,22 +795,7 @@ bool cPluginLua::OnPluginsLoaded(void)
 
 bool cPluginLua::OnPostCrafting(cPlayer & a_Player, cCraftingGrid & a_Grid, cCraftingRecipe & a_Recipe)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_POST_CRAFTING];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_Player, &a_Grid, &a_Recipe, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_POST_CRAFTING, &a_Player, &a_Grid, &a_Recipe);
 }
 
 
@@ -1512,22 +804,7 @@ bool cPluginLua::OnPostCrafting(cPlayer & a_Player, cCraftingGrid & a_Grid, cCra
 
 bool cPluginLua::OnPreCrafting(cPlayer & a_Player, cCraftingGrid & a_Grid, cCraftingRecipe & a_Recipe)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_PRE_CRAFTING];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_Player, &a_Grid, &a_Recipe, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_PRE_CRAFTING, &a_Player, &a_Grid, &a_Recipe);
 }
 
 
@@ -1536,22 +813,7 @@ bool cPluginLua::OnPreCrafting(cPlayer & a_Player, cCraftingGrid & a_Grid, cCraf
 
 bool cPluginLua::OnProjectileHitBlock(cProjectileEntity & a_Projectile, int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_Face, const Vector3d & a_BlockHitPos)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_PROJECTILE_HIT_BLOCK];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_Projectile, a_BlockX, a_BlockY, a_BlockZ, a_Face, a_BlockHitPos, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_PROJECTILE_HIT_BLOCK, &a_Projectile, a_BlockX, a_BlockY, a_BlockZ, a_Face, a_BlockHitPos);
 }
 
 
@@ -1560,22 +822,7 @@ bool cPluginLua::OnProjectileHitBlock(cProjectileEntity & a_Projectile, int a_Bl
 
 bool cPluginLua::OnProjectileHitEntity(cProjectileEntity & a_Projectile, cEntity & a_HitEntity)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_PROJECTILE_HIT_ENTITY];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_Projectile, &a_HitEntity, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_PROJECTILE_HIT_ENTITY, &a_Projectile, &a_HitEntity);
 }
 
 
@@ -1584,16 +831,16 @@ bool cPluginLua::OnProjectileHitEntity(cProjectileEntity & a_Projectile, cEntity
 
 bool cPluginLua::OnServerPing(cClientHandle & a_ClientHandle, AString & a_ServerDescription, int & a_OnlinePlayersCount, int & a_MaxPlayersCount, AString & a_Favicon)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
+	cOperation op(*this);
+	if (!op().IsValid())
 	{
 		return false;
 	}
 	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_SERVER_PING];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
+	auto & hooks = m_HookMap[cPluginManager::HOOK_SERVER_PING];
+	for (auto & hook: hooks)
 	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_ClientHandle, a_ServerDescription, a_OnlinePlayersCount, a_MaxPlayersCount, a_Favicon, cLuaState::Return, res, a_ServerDescription, a_OnlinePlayersCount, a_MaxPlayersCount, a_Favicon);
+		hook->Call(&a_ClientHandle, a_ServerDescription, a_OnlinePlayersCount, a_MaxPlayersCount, a_Favicon, cLuaState::Return, res, a_ServerDescription, a_OnlinePlayersCount, a_MaxPlayersCount, a_Favicon);
 		if (res)
 		{
 			return true;
@@ -1608,22 +855,7 @@ bool cPluginLua::OnServerPing(cClientHandle & a_ClientHandle, AString & a_Server
 
 bool cPluginLua::OnSpawnedEntity(cWorld & a_World, cEntity & a_Entity)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_SPAWNED_ENTITY];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_World, &a_Entity, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_SPAWNED_ENTITY, &a_World, &a_Entity);
 }
 
 
@@ -1632,22 +864,7 @@ bool cPluginLua::OnSpawnedEntity(cWorld & a_World, cEntity & a_Entity)
 
 bool cPluginLua::OnSpawnedMonster(cWorld & a_World, cMonster & a_Monster)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_SPAWNED_MONSTER];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_World, &a_Monster, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_SPAWNED_MONSTER, &a_World, &a_Monster);
 }
 
 
@@ -1656,22 +873,7 @@ bool cPluginLua::OnSpawnedMonster(cWorld & a_World, cMonster & a_Monster)
 
 bool cPluginLua::OnSpawningEntity(cWorld & a_World, cEntity & a_Entity)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_SPAWNING_ENTITY];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_World, &a_Entity, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_SPAWNING_ENTITY, &a_World, &a_Entity);
 }
 
 
@@ -1680,22 +882,7 @@ bool cPluginLua::OnSpawningEntity(cWorld & a_World, cEntity & a_Entity)
 
 bool cPluginLua::OnSpawningMonster(cWorld & a_World, cMonster & a_Monster)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_SPAWNING_MONSTER];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_World, &a_Monster, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_SPAWNING_MONSTER, &a_World, &a_Monster);
 }
 
 
@@ -1704,22 +891,7 @@ bool cPluginLua::OnSpawningMonster(cWorld & a_World, cMonster & a_Monster)
 
 bool cPluginLua::OnTakeDamage(cEntity & a_Receiver, TakeDamageInfo & a_TDI)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_TAKE_DAMAGE];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_Receiver, &a_TDI, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_TAKE_DAMAGE, &a_Receiver, &a_TDI);
 }
 
 
@@ -1733,22 +905,7 @@ bool cPluginLua::OnUpdatedSign(
 	cPlayer * a_Player
 )
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_UPDATED_SIGN];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_World, a_BlockX, a_BlockY, a_BlockZ, a_Line1, a_Line2, a_Line3, a_Line4, a_Player, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_UPDATED_SIGN, &a_World, a_BlockX, a_BlockY, a_BlockZ, a_Line1, a_Line2, a_Line3, a_Line4, a_Player);
 }
 
 
@@ -1762,16 +919,16 @@ bool cPluginLua::OnUpdatingSign(
 	cPlayer * a_Player
 )
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
+	cOperation op(*this);
+	if (!op().IsValid())
 	{
 		return false;
 	}
 	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_UPDATING_SIGN];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
+	auto & hooks = m_HookMap[cPluginManager::HOOK_UPDATING_SIGN];
+	for (auto & hook: hooks)
 	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_World, a_BlockX, a_BlockY, a_BlockZ, a_Line1, a_Line2, a_Line3, a_Line4, a_Player, cLuaState::Return, res, a_Line1, a_Line2, a_Line3, a_Line4);
+		hook->Call(&a_World, a_BlockX, a_BlockY, a_BlockZ, a_Line1, a_Line2, a_Line3, a_Line4, a_Player, cLuaState::Return, res, a_Line1, a_Line2, a_Line3, a_Line4);
 		if (res)
 		{
 			return true;
@@ -1786,22 +943,7 @@ bool cPluginLua::OnUpdatingSign(
 
 bool cPluginLua::OnWeatherChanged(cWorld & a_World)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_WEATHER_CHANGED];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_World, cLuaState::Return, res);
-		if (res)
-		{
-			return true;
-		}
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_WEATHER_CHANGED, &a_World);
 }
 
 
@@ -1810,16 +952,16 @@ bool cPluginLua::OnWeatherChanged(cWorld & a_World)
 
 bool cPluginLua::OnWeatherChanging(cWorld & a_World, eWeather & a_NewWeather)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
+	cOperation op(*this);
+	if (!op().IsValid())
 	{
 		return false;
 	}
 	bool res = false;
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_WEATHER_CHANGING];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
+	auto & hooks = m_HookMap[cPluginManager::HOOK_WEATHER_CHANGING];
+	for (auto & hook: hooks)
 	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_World, a_NewWeather, cLuaState::Return, res, a_NewWeather);
+		hook->Call(&a_World, a_NewWeather, cLuaState::Return, res, a_NewWeather);
 		if (res)
 		{
 			return true;
@@ -1834,17 +976,7 @@ bool cPluginLua::OnWeatherChanging(cWorld & a_World, eWeather & a_NewWeather)
 
 bool cPluginLua::OnWorldStarted(cWorld & a_World)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_WORLD_STARTED];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_World);
-	}
-	return false;
+	return CallSimpleHooks(cPluginManager::HOOK_WORLD_STARTED, &a_World);
 }
 
 
@@ -1853,102 +985,7 @@ bool cPluginLua::OnWorldStarted(cWorld & a_World)
 
 bool cPluginLua::OnWorldTick(cWorld & a_World, std::chrono::milliseconds a_Dt, std::chrono::milliseconds a_LastTickDurationMSec)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (!m_LuaState.IsValid())
-	{
-		return false;
-	}
-	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_WORLD_TICK];
-	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
-	{
-		m_LuaState.Call(static_cast<int>(**itr), &a_World, a_Dt, a_LastTickDurationMSec);
-	}
-	return false;
-}
-
-
-
-
-
-bool cPluginLua::HandleCommand(const AStringVector & a_Split, cPlayer & a_Player, const AString & a_FullCommand)
-{
-	ASSERT(!a_Split.empty());
-	CommandMap::iterator cmd = m_Commands.find(a_Split[0]);
-	if (cmd == m_Commands.end())
-	{
-		LOGWARNING("Command handler is registered in cPluginManager but not in cPlugin, wtf? Command \"%s\".", a_Split[0].c_str());
-		return false;
-	}
-
-	cCSLock Lock(m_CriticalSection);
-	bool res = false;
-	m_LuaState.Call(cmd->second, a_Split, &a_Player, a_FullCommand, cLuaState::Return, res);
-	return res;
-}
-
-
-
-
-
-bool cPluginLua::HandleConsoleCommand(const AStringVector & a_Split, cCommandOutputCallback & a_Output, const AString & a_FullCommand)
-{
-	ASSERT(!a_Split.empty());
-	CommandMap::iterator cmd = m_ConsoleCommands.find(a_Split[0]);
-	if (cmd == m_ConsoleCommands.end())
-	{
-		LOGWARNING("Console command handler is registered in cPluginManager but not in cPlugin, wtf? Console command \"%s\", plugin \"%s\".",
-			a_Split[0].c_str(), GetName().c_str()
-		);
-		return false;
-	}
-
-	cCSLock Lock(m_CriticalSection);
-	bool res = false;
-	AString str;
-	m_LuaState.Call(cmd->second, a_Split, a_FullCommand, cLuaState::Return, res, str);
-	if (res && !str.empty())
-	{
-		a_Output.Out(str);
-	}
-	return res;
-}
-
-
-
-
-
-void cPluginLua::ClearCommands(void)
-{
-	cCSLock Lock(m_CriticalSection);
-
-	// Unreference the bound functions so that Lua can GC them
-	if (m_LuaState != nullptr)
-	{
-		for (CommandMap::iterator itr = m_Commands.begin(), end = m_Commands.end(); itr != end; ++itr)
-		{
-			luaL_unref(m_LuaState, LUA_REGISTRYINDEX, itr->second);
-		}
-	}
-	m_Commands.clear();
-}
-
-
-
-
-
-void cPluginLua::ClearConsoleCommands(void)
-{
-	cCSLock Lock(m_CriticalSection);
-
-	// Unreference the bound functions so that Lua can GC them
-	if (m_LuaState != nullptr)
-	{
-		for (CommandMap::iterator itr = m_ConsoleCommands.begin(), end = m_ConsoleCommands.end(); itr != end; ++itr)
-		{
-			luaL_unref(m_LuaState, LUA_REGISTRYINDEX, itr->second);
-		}
-	}
-	m_ConsoleCommands.clear();
+	return CallSimpleHooks(cPluginManager::HOOK_WORLD_TICK, &a_World, a_Dt, a_LastTickDurationMSec);
 }
 
 
@@ -2059,22 +1096,9 @@ const char * cPluginLua::GetHookFnName(int a_HookType)
 
 
 
-bool cPluginLua::AddHookRef(int a_HookType, int a_FnRefIdx)
+bool cPluginLua::AddHookCallback(int a_HookType, cLuaState::cCallbackPtr && a_Callback)
 {
-	ASSERT(m_CriticalSection.IsLockedByCurrentThread());  // It probably has to be, how else would we have a LuaState?
-
-	// Check if the function reference is valid:
-	cLuaState::cRef * Ref = new cLuaState::cRef(m_LuaState, a_FnRefIdx);
-	if ((Ref == nullptr) || !Ref->IsValid())
-	{
-		LOGWARNING("Plugin %s tried to add a hook %d with bad handler function.", GetName().c_str(), a_HookType);
-		m_LuaState.LogStackTrace();
-		delete Ref;
-		Ref = nullptr;
-		return false;
-	}
-
-	m_HookMap[a_HookType].push_back(Ref);
+	m_HookMap[a_HookType].push_back(std::move(a_Callback));
 	return true;
 }
 
@@ -2089,10 +1113,10 @@ int cPluginLua::CallFunctionFromForeignState(
 	int a_ParamEnd
 )
 {
-	cCSLock Lock(m_CriticalSection);
+	cOperation op(*this);
 
 	// Call the function:
-	int NumReturns = m_LuaState.CallFunctionWithForeignParams(a_FunctionName, a_ForeignState, a_ParamStart, a_ParamEnd);
+	int NumReturns = op().CallFunctionWithForeignParams(a_FunctionName, a_ForeignState, a_ParamStart, a_ParamEnd);
 	if (NumReturns < 0)
 	{
 		// The call has failed, an error has already been output to the log, so just silently bail out with the same error
@@ -2116,133 +1140,13 @@ int cPluginLua::CallFunctionFromForeignState(
 
 
 
-void cPluginLua::AddResettable(cPluginLua::cResettablePtr a_Resettable)
-{
-	cCSLock Lock(m_CriticalSection);
-	m_Resettables.push_back(a_Resettable);
-}
-
-
-
-
-
-AString cPluginLua::HandleWebRequest(const HTTPRequest & a_Request)
-{
-	// Find the tab to use for the request:
-	auto TabName = GetTabNameForRequest(a_Request);
-	AString SafeTabTitle = TabName.second;
-	if (SafeTabTitle.empty())
-	{
-		return "";
-	}
-	auto Tab = GetTabBySafeTitle(SafeTabTitle);
-	if (Tab == nullptr)
-	{
-		return "";
-	}
-
-	// Get the page content from the plugin:
-	cCSLock Lock(m_CriticalSection);
-	AString Contents = Printf("WARNING: WebPlugin tab '%s' did not return a string!", Tab->m_Title.c_str());
-	if (!m_LuaState.Call(Tab->m_UserData, &a_Request, cLuaState::Return, Contents))
-	{
-		return "Lua encountered error while processing the page request";
-	}
-	return Contents;
-}
-
-
-
-
-
-bool cPluginLua::AddWebTab(const AString & a_Title, lua_State * a_LuaState, int a_FunctionReference)
+void cPluginLua::ClearWebTabs(void)
 {
-	cCSLock Lock(m_CriticalSection);
-	if (a_LuaState != m_LuaState)
+	auto webAdmin = cRoot::Get()->GetWebAdmin();
+	if (webAdmin != nullptr)  // can be nullptr when shutting down the server
 	{
-		LOGERROR("Only allowed to add a tab to a WebPlugin of your own Plugin!");
-		return false;
+		webAdmin->RemoveAllPluginWebTabs(m_Name);
 	}
-	AddNewWebTab(a_Title, a_FunctionReference);
-	return true;
-}
-
-
-
-
-
-void cPluginLua::BindCommand(const AString & a_Command, int a_FnRef)
-{
-	ASSERT(m_Commands.find(a_Command) == m_Commands.end());
-	m_Commands[a_Command] = a_FnRef;
-}
-
-
-
-
-
-void cPluginLua::BindConsoleCommand(const AString & a_Command, int a_FnRef)
-{
-	ASSERT(m_ConsoleCommands.find(a_Command) == m_ConsoleCommands.end());
-	m_ConsoleCommands[a_Command] = a_FnRef;
-}
-
-
-
-
-
-void cPluginLua::Unreference(int a_LuaRef)
-{
-	cCSLock Lock(m_CriticalSection);
-	luaL_unref(m_LuaState, LUA_REGISTRYINDEX, a_LuaRef);
-}
-
-
-
-
-
-bool cPluginLua::CallbackWindowClosing(int a_FnRef, cWindow & a_Window, cPlayer & a_Player, bool a_CanRefuse)
-{
-	ASSERT(a_FnRef != LUA_REFNIL);
-
-	cCSLock Lock(m_CriticalSection);
-	bool res = false;
-	m_LuaState.Call(a_FnRef, &a_Window, &a_Player, a_CanRefuse, cLuaState::Return, res);
-	return res;
-}
-
-
-
-
-
-void cPluginLua::CallbackWindowSlotChanged(int a_FnRef, cWindow & a_Window, int a_SlotNum)
-{
-	ASSERT(a_FnRef != LUA_REFNIL);
-
-	cCSLock Lock(m_CriticalSection);
-	m_LuaState.Call(a_FnRef, &a_Window, a_SlotNum);
-}
-
-
-
-
-
-////////////////////////////////////////////////////////////////////////////////
-// cPluginLua::cResettable:
-
-cPluginLua::cResettable::cResettable(cPluginLua & a_Plugin):
-	m_Plugin(&a_Plugin)
-{
-}
-
-
-
-
-
-void cPluginLua::cResettable::Reset(void)
-{
-	cCSLock Lock(m_CSPlugin);
-	m_Plugin = nullptr;
 }
 
 
diff --git a/src/Bindings/PluginLua.h b/src/Bindings/PluginLua.h
index db6612671..dc3c91880 100644
--- a/src/Bindings/PluginLua.h
+++ b/src/Bindings/PluginLua.h
@@ -10,7 +10,6 @@
 #pragma once
 
 #include "Plugin.h"
-#include "WebPlugin.h"
 #include "LuaState.h"
 
 // Names for the global variables through which the plugin is identified in its LuaState
@@ -29,8 +28,7 @@ class cWindow;
 
 // tolua_begin
 class cPluginLua :
-	public cPlugin,
-	public cWebPlugin
+	public cPlugin
 {
 	typedef cPlugin super;
 
@@ -49,7 +47,7 @@ public:
 	public:
 		cOperation(cPluginLua & a_Plugin) :
 			m_Plugin(a_Plugin),
-			m_Lock(a_Plugin.m_CriticalSection)
+			m_Lock(a_Plugin.m_LuaState)
 		{
 		}
 
@@ -58,42 +56,12 @@ public:
 	protected:
 		cPluginLua & m_Plugin;
 
-		/** RAII lock for m_Plugin.m_CriticalSection */
-		cCSLock m_Lock;
+		/** RAII lock for the Lua state. */
+		cLuaState::cLock m_Lock;
 	} ;
 
 
 
-	/** A base class that represents something related to a plugin
-	The plugin can reset this class so that the instance can continue to exist but will not engage the (possibly non-existent) plugin anymore.
-	This is used for scheduled tasks etc., so that they can be queued and reset when the plugin is terminated, without removing them from the queue. */
-	class cResettable
-	{
-	public:
-		/** Creates a new instance bound to the specified plugin. */
-		cResettable(cPluginLua & a_Plugin);
-
-		// Force a virtual destructor in descendants:
-		virtual ~cResettable() {}
-
-		/** Resets the plugin instance stored within.
-		The instance will continue to exist, but should not call into the plugin anymore. */
-		virtual void Reset(void);
-
-	protected:
-		/** The plugin that this instance references.
-		If nullptr, the plugin has already unloaded and the instance should bail out any processing.
-		Protected against multithreaded access by m_CSPlugin. */
-		cPluginLua * m_Plugin;
-
-		/** The mutex protecting m_Plugin against multithreaded access. */
-		cCriticalSection m_CSPlugin;
-	};
-
-	typedef SharedPtr<cResettable> cResettablePtr;
-	typedef std::vector<cResettablePtr> cResettablePtrs;
-
-
 	cPluginLua(const AString & a_PluginDirectory);
 	~cPluginLua();
 
@@ -170,52 +138,15 @@ public:
 	virtual bool OnWorldStarted             (cWorld & a_World) override;
 	virtual bool OnWorldTick                (cWorld & a_World, std::chrono::milliseconds a_Dt, std::chrono::milliseconds a_LastTickDurationMSec) override;
 
-	virtual bool HandleCommand(const AStringVector & a_Split, cPlayer & a_Player, const AString & a_FullCommand) override;
-
-	virtual bool HandleConsoleCommand(const AStringVector & a_Split, cCommandOutputCallback & a_Output, const AString & a_FullCommand) override;
-
-	virtual void ClearCommands(void) override;
-
-	virtual void ClearConsoleCommands(void) override;
-
 	/** Returns true if the plugin contains the function for the specified hook type, using the old-style registration (#121) */
 	bool CanAddOldStyleHook(int a_HookType);
 
-	// cWebPlugin overrides
-	virtual const AString GetWebTitle(void) const override {return GetName(); }
-	virtual AString HandleWebRequest(const HTTPRequest & a_Request) override;
-
-	/** Adds a new web tab to webadmin.
-	Displaying the tab calls the referenced function. */
-	bool AddWebTab(const AString & a_Title, lua_State * a_LuaState, int a_FunctionReference);  // Exported in ManualBindings.cpp
-
-	/** Binds the command to call the function specified by a Lua function reference. Simply adds to CommandMap. */
-	void BindCommand(const AString & a_Command, int a_FnRef);
-
-	/** Binds the console command to call the function specified by a Lua function reference. Simply adds to CommandMap. */
-	void BindConsoleCommand(const AString & a_Command, int a_FnRef);
-
-	cLuaState & GetLuaState(void) { return m_LuaState; }
-
-	cCriticalSection & GetCriticalSection(void) { return m_CriticalSection; }
-
-	/** Removes a previously referenced object (luaL_unref()) */
-	void Unreference(int a_LuaRef);
-
-	/** Calls the plugin-specified "cLuaWindow closing" callback. Returns true only if the callback returned true */
-	bool CallbackWindowClosing(int a_FnRef, cWindow & a_Window, cPlayer & a_Player, bool a_CanRefuse);
-
-	/** Calls the plugin-specified "cLuaWindow slot changed" callback. */
-	void CallbackWindowSlotChanged(int a_FnRef, cWindow & a_Window, int a_SlotNum);
-
 	/** Returns the name of Lua function that should handle the specified hook type in the older (#121) API */
 	static const char * GetHookFnName(int a_HookType);
 
-	/** Adds a Lua function to be called for the specified hook.
-	The function has to be on the Lua stack at the specified index a_FnRefIdx
-	Returns true if the hook was added successfully.
-	*/
-	bool AddHookRef(int a_HookType, int a_FnRefIdx);
+	/** Adds a Lua callback to be called for the specified hook.
+	Returns true if the hook was added successfully. */
+	bool AddHookCallback(int a_HookType, cLuaState::cCallbackPtr && a_Callback);
 
 	/** Calls a function in this plugin's LuaState with parameters copied over from a_ForeignState.
 	The values that the function returns are placed onto a_ForeignState.
@@ -231,45 +162,50 @@ public:
 	template <typename FnT, typename... Args>
 	bool Call(FnT a_Fn, Args && ... a_Args)
 	{
-		cCSLock Lock(m_CriticalSection);
-		return m_LuaState.Call(a_Fn, a_Args...);
+		return cOperation(*this)().Call(a_Fn, a_Args...);
 	}
 
-	/** Adds the specified cResettable instance to m_Resettables, so that it is notified when the plugin is being closed. */
-	void AddResettable(cResettablePtr a_Resettable);
-
 protected:
-	/** Maps command name into Lua function reference */
-	typedef std::map<AString, int> CommandMap;
-
 	/** Provides an array of Lua function references */
-	typedef std::vector<cLuaState::cRef *> cLuaRefs;
+	typedef std::vector<cLuaState::cCallbackPtr> cLuaCallbacks;
 
 	/** Maps hook types into arrays of Lua function references to call for each hook type */
-	typedef std::map<int, cLuaRefs> cHookMap;
-
+	typedef std::map<int, cLuaCallbacks> cHookMap;
 
-	/** The mutex protecting m_LuaState and each of the m_Resettables[] against multithreaded use. */
-	cCriticalSection m_CriticalSection;
 
 	/** The plugin's Lua state. */
 	cLuaState m_LuaState;
 
-	/** Objects that need notification when the plugin is about to be unloaded. */
-	cResettablePtrs m_Resettables;
-
-	/** In-game commands that the plugin has registered. */
-	CommandMap m_Commands;
-
-	/** Console commands that the plugin has registered. */
-	CommandMap m_ConsoleCommands;
-
 	/** Hooks that the plugin has registered. */
 	cHookMap m_HookMap;
 
 
 	/** Releases all Lua references, notifies and removes all m_Resettables[] and closes the m_LuaState. */
 	void Close(void);
+
+	/** Removes all WebTabs currently registered for this plugin from the WebAdmin. */
+	void ClearWebTabs(void);
+
+	/** Calls a hook that has the simple format - single bool return value specifying whether the chain should continue.
+	The advanced hook types that need more processing implement a similar loop manually instead.
+	Returns true if any of hook calls wants to abort the hook (returned true), false if all hook calls returned false. */
+	template <typename... Args>
+	bool CallSimpleHooks(int a_HookType, Args && ... a_Args)
+	{
+		cOperation op(*this);
+		auto & hooks = m_HookMap[a_HookType];
+		bool res = false;
+		for (auto & hook: hooks)
+		{
+			hook->Call(std::forward<Args>(a_Args)..., cLuaState::Return, res);
+			if (res)
+			{
+				// Hook wants to terminate the chain processing
+				return true;
+			}
+		}
+		return false;
+	}
 } ;  // tolua_export
 
 
diff --git a/src/Bindings/PluginManager.cpp b/src/Bindings/PluginManager.cpp
index 5b3ef7803..19d2e8b4d 100644
--- a/src/Bindings/PluginManager.cpp
+++ b/src/Bindings/PluginManager.cpp
@@ -1569,9 +1569,9 @@ cPluginManager::CommandResult cPluginManager::HandleCommand(cPlayer & a_Player,
 		return crNoPermission;
 	}
 
-	ASSERT(cmd->second.m_Plugin != nullptr);
+	ASSERT(cmd->second.m_Handler != nullptr);
 
-	if (!cmd->second.m_Plugin->HandleCommand(Split, a_Player, a_Command))
+	if (!cmd->second.m_Handler->ExecuteCommand(Split, &a_Player, a_Command, nullptr))
 	{
 		return crError;
 	}
@@ -1654,11 +1654,6 @@ void cPluginManager::RemoveHooks(cPlugin * a_Plugin)
 
 void cPluginManager::RemovePluginCommands(cPlugin * a_Plugin)
 {
-	if (a_Plugin != nullptr)
-	{
-		a_Plugin->ClearCommands();
-	}
-
 	for (CommandMap::iterator itr = m_Commands.begin(); itr != m_Commands.end();)
 	{
 		if (itr->second.m_Plugin == a_Plugin)
@@ -1694,7 +1689,13 @@ bool cPluginManager::IsPluginLoaded(const AString & a_PluginName)
 
 
 
-bool cPluginManager::BindCommand(const AString & a_Command, cPlugin * a_Plugin, const AString & a_Permission, const AString & a_HelpString)
+bool cPluginManager::BindCommand(
+	const AString & a_Command,
+	cPlugin * a_Plugin,
+	cCommandHandlerPtr a_Handler,
+	const AString & a_Permission,
+	const AString & a_HelpString
+)
 {
 	CommandMap::iterator cmd = m_Commands.find(a_Command);
 	if (cmd != m_Commands.end())
@@ -1703,9 +1704,11 @@ bool cPluginManager::BindCommand(const AString & a_Command, cPlugin * a_Plugin,
 		return false;
 	}
 
-	m_Commands[a_Command].m_Plugin     = a_Plugin;
-	m_Commands[a_Command].m_Permission = a_Permission;
-	m_Commands[a_Command].m_HelpString = a_HelpString;
+	auto & reg = m_Commands[a_Command];
+	reg.m_Plugin     = a_Plugin;
+	reg.m_Handler    = a_Handler;
+	reg.m_Permission = a_Permission;
+	reg.m_HelpString = a_HelpString;
 	return true;
 }
 
@@ -1768,11 +1771,6 @@ cPluginManager::CommandResult cPluginManager::ForceExecuteCommand(cPlayer & a_Pl
 
 void cPluginManager::RemovePluginConsoleCommands(cPlugin * a_Plugin)
 {
-	if (a_Plugin != nullptr)
-	{
-		a_Plugin->ClearConsoleCommands();
-	}
-
 	for (CommandMap::iterator itr = m_ConsoleCommands.begin(); itr != m_ConsoleCommands.end();)
 	{
 		if (itr->second.m_Plugin == a_Plugin)
@@ -1792,7 +1790,12 @@ void cPluginManager::RemovePluginConsoleCommands(cPlugin * a_Plugin)
 
 
 
-bool cPluginManager::BindConsoleCommand(const AString & a_Command, cPlugin * a_Plugin, const AString & a_HelpString)
+bool cPluginManager::BindConsoleCommand(
+	const AString & a_Command,
+	cPlugin * a_Plugin,
+	cCommandHandlerPtr a_Handler,
+	const AString & a_HelpString
+)
 {
 	CommandMap::iterator cmd = m_ConsoleCommands.find(a_Command);
 	if (cmd != m_ConsoleCommands.end())
@@ -1808,9 +1811,11 @@ bool cPluginManager::BindConsoleCommand(const AString & a_Command, cPlugin * a_P
 		return false;
 	}
 
-	m_ConsoleCommands[a_Command].m_Plugin     = a_Plugin;
-	m_ConsoleCommands[a_Command].m_Permission = "";
-	m_ConsoleCommands[a_Command].m_HelpString = a_HelpString;
+	auto & reg = m_ConsoleCommands[a_Command];
+	reg.m_Plugin     = a_Plugin;
+	reg.m_Handler    = a_Handler;
+	reg.m_Permission = "";
+	reg.m_HelpString = a_HelpString;
 	return true;
 }
 
@@ -1873,7 +1878,7 @@ bool cPluginManager::ExecuteConsoleCommand(const AStringVector & a_Split, cComma
 		return (res == crExecuted);
 	}
 
-	return cmd->second.m_Plugin->HandleConsoleCommand(a_Split, a_Output, a_Command);
+	return cmd->second.m_Handler->ExecuteCommand(a_Split, nullptr, a_Command, &a_Output);
 }
 
 
@@ -1965,6 +1970,23 @@ bool cPluginManager::ForEachPlugin(cPluginCallback & a_Callback)
 
 
 
+AString cPluginManager::GetPluginFolderName(const AString & a_PluginName)
+{
+	// TODO: Implement locking for plugins
+	for (auto & plugin: m_Plugins)
+	{
+		if (plugin->GetName() == a_PluginName)
+		{
+			return plugin->GetFolderName();
+		}
+	}
+	return AString();
+}
+
+
+
+
+
 void cPluginManager::AddHook(cPlugin * a_Plugin, int a_Hook)
 {
 	if (a_Plugin == nullptr)
diff --git a/src/Bindings/PluginManager.h b/src/Bindings/PluginManager.h
index f3f0b6d0b..0423d6af1 100644
--- a/src/Bindings/PluginManager.h
+++ b/src/Bindings/PluginManager.h
@@ -152,6 +152,7 @@ public:
 		HOOK_MAX = HOOK_NUM_HOOKS - 1,
 	} ;  // tolua_export
 
+
 	/** Used as a callback for enumerating bound commands */
 	class cCommandEnumCallback
 	{
@@ -164,6 +165,30 @@ public:
 		virtual bool Command(const AString & a_Command, const cPlugin * a_Plugin, const AString & a_Permission, const AString & a_HelpString) = 0;
 	} ;
 
+
+	/** Interface that must be provided by any class that implements a command handler, either in-game or console command. */
+	class cCommandHandler
+	{
+	public:
+		// Force a virtual destructor in descendants
+		virtual ~cCommandHandler() {}
+
+		/** Executes the specified in-game command.
+		a_Split is the command string, split at the spaces.
+		a_Player is the player executing the command, nullptr in case of the console.
+		a_Command is the entire command string.
+		a_Output is the sink into which the additional text returned by the command handler should be sent; only used for console commands. */
+		virtual bool ExecuteCommand(
+			const AStringVector & a_Split,
+			cPlayer * a_Player,
+			const AString & a_Command,
+			cCommandOutputCallback * a_Output = nullptr
+		) = 0;
+	};
+
+	typedef SharedPtr<cCommandHandler> cCommandHandlerPtr;
+
+
 	/** The interface used for enumerating and extern-calling plugins */
 	typedef cItemCallback<cPlugin> cPluginCallback;
 
@@ -281,8 +306,16 @@ public:
 	/** Returns true if the specified plugin is loaded. */
 	bool IsPluginLoaded(const AString & a_PluginName);  // tolua_export
 
-	/** Binds a command to the specified plugin. Returns true if successful, false if command already bound. */
-	bool BindCommand(const AString & a_Command, cPlugin * a_Plugin, const AString & a_Permission, const AString & a_HelpString);  // Exported in ManualBindings.cpp, without the a_Plugin param
+	/** Binds a command to the specified handler.
+	Returns true if successful, false if command already bound.
+	Exported in ManualBindings.cpp. */
+	bool BindCommand(
+		const AString & a_Command,
+		cPlugin * a_Plugin,
+		cCommandHandlerPtr a_Handler,
+		const AString & a_Permission,
+		const AString & a_HelpString
+	);
 
 	/** Calls a_Callback for each bound command, returns true if all commands were enumerated */
 	bool ForEachCommand(cCommandEnumCallback & a_Callback);  // Exported in ManualBindings.cpp
@@ -302,8 +335,15 @@ public:
 	/** Removes all console command bindings that the specified plugin has made */
 	void RemovePluginConsoleCommands(cPlugin * a_Plugin);
 
-	/** Binds a console command to the specified plugin. Returns true if successful, false if command already bound. */
-	bool BindConsoleCommand(const AString & a_Command, cPlugin * a_Plugin, const AString & a_HelpString);  // Exported in ManualBindings.cpp, without the a_Plugin param
+	/** Binds a console command to the specified handler.
+	Returns true if successful, false if command already bound.
+	Exported in ManualBindings.cpp. */
+	bool BindConsoleCommand(
+		const AString & a_Command,
+		cPlugin * a_Plugin,
+		cCommandHandlerPtr a_Handler,
+		const AString & a_HelpString
+	);
 
 	/** Calls a_Callback for each bound console command, returns true if all commands were enumerated */
 	bool ForEachConsoleCommand(cCommandEnumCallback & a_Callback);  // Exported in ManualBindings.cpp
@@ -332,6 +372,9 @@ public:
 	Returns true if all plugins have been reported, false if the callback has aborted the enumeration by returning true. */
 	bool ForEachPlugin(cPluginCallback & a_Callback);
 
+	/** Returns the name of the folder (cPlugin::GetFolderName()) from which the specified plugin was loaded. */
+	AString GetPluginFolderName(const AString & a_PluginName);  // tolua_export
+
 	/** Returns the path where individual plugins' folders are expected.
 	The path doesn't end in a slash. */
 	static AString GetPluginsPath(void) { return FILE_IO_PREFIX + AString("Plugins"); }  // tolua_export
@@ -345,6 +388,7 @@ private:
 		cPlugin * m_Plugin;
 		AString   m_Permission;  // Not used for console commands
 		AString   m_HelpString;
+		cCommandHandlerPtr m_Handler;
 	} ;
 
 	typedef std::map<int, cPluginManager::PluginList> HookMap;
diff --git a/src/Bindings/WebPlugin.cpp b/src/Bindings/WebPlugin.cpp
deleted file mode 100644
index 1eca7de93..000000000
--- a/src/Bindings/WebPlugin.cpp
+++ /dev/null
@@ -1,152 +0,0 @@
-
-#include "Globals.h"  // NOTE: MSVC stupidness requires this to be the same across all modules
-
-#include "WebPlugin.h"
-#include "../WebAdmin.h"
-#include "../Root.h"
-
-
-
-
-
-cWebPlugin::cWebPlugin()
-{
-	cWebAdmin * WebAdmin = cRoot::Get()->GetWebAdmin();
-	if (WebAdmin != nullptr)
-	{
-		WebAdmin->AddPlugin(this);
-	}
-}
-
-
-
-
-
-cWebPlugin::~cWebPlugin()
-{
-	ASSERT(m_Tabs.empty());  // Has ClearTabs() been called?
-
-	// Remove from WebAdmin:
-	cWebAdmin * WebAdmin = cRoot::Get()->GetWebAdmin();
-	if (WebAdmin != nullptr)
-	{
-		WebAdmin->RemovePlugin(this);
-	}
-}
-
-
-
-
-
-cWebPlugin::cTabNames cWebPlugin::GetTabNames(void) const
-{
-	std::list< std::pair<AString, AString>> NameList;
-	for (auto itr = m_Tabs.cbegin(), end = m_Tabs.cend(); itr != end; ++itr)
-	{
-		NameList.push_back(std::make_pair((*itr)->m_Title, (*itr)->m_SafeTitle));
-	}
-	return NameList;
-}
-
-
-
-
-
-cWebPlugin::cTabPtr cWebPlugin::GetTabBySafeTitle(const AString & a_SafeTitle) const
-{
-	cCSLock Lock(m_CSTabs);
-	for (auto itr = m_Tabs.cbegin(), end = m_Tabs.cend(); itr != end; ++itr)
-	{
-		if ((*itr)->m_SafeTitle == a_SafeTitle)
-		{
-			return *itr;
-		}
-	}
-	return nullptr;
-}
-
-
-
-
-
-std::pair<AString, AString> cWebPlugin::GetTabNameForRequest(const HTTPRequest & a_Request)
-{
-	AStringVector Split = StringSplit(a_Request.Path, "/");
-	if (Split.empty())
-	{
-		return std::make_pair(AString(), AString());
-	}
-
-	cCSLock Lock(m_CSTabs);
-	cTabPtr Tab;
-	if (Split.size() > 2)  // If we got the tab name, show that page
-	{
-		for (auto itr = m_Tabs.cbegin(), end = m_Tabs.cend(); itr != end; ++itr)
-		{
-			if ((*itr)->m_SafeTitle.compare(Split[2]) == 0)  // This is the one!
-			{
-				return std::make_pair((*itr)->m_Title, (*itr)->m_SafeTitle);
-			}
-		}
-		// Tab name not found, display an "empty" page:
-		return std::make_pair(AString(), AString());
-	}
-
-	// Show the first tab:
-	if (!m_Tabs.empty())
-	{
-		return std::make_pair(m_Tabs.front()->m_SafeTitle, m_Tabs.front()->m_SafeTitle);
-	}
-
-	// No tabs at all:
-	return std::make_pair(AString(), AString());
-}
-
-
-
-
-AString cWebPlugin::SafeString(const AString & a_String)
-{
-	AString RetVal;
-	auto len = a_String.size();
-	RetVal.reserve(len);
-	for (size_t i = 0; i < len; ++i)
-	{
-		char c = a_String[i];
-		if (c == ' ')
-		{
-			c = '_';
-		}
-		RetVal.push_back(c);
-	}
-	return RetVal;
-}
-
-
-
-
-
-void cWebPlugin::AddNewWebTab(const AString & a_Title, int a_UserData)
-{
-	auto Tab = std::make_shared<cTab>(a_Title, a_UserData);
-	cCSLock Lock(m_CSTabs);
-	m_Tabs.push_back(Tab);
-}
-
-
-
-
-
-void cWebPlugin::ClearTabs(void)
-{
-	// Remove the webadmin tabs:
-	cTabPtrs Tabs;
-	{
-		cCSLock Lock(m_CSTabs);
-		std::swap(Tabs, m_Tabs);
-	}
-}
-
-
-
-
diff --git a/src/Bindings/WebPlugin.h b/src/Bindings/WebPlugin.h
deleted file mode 100644
index 6dc8db801..000000000
--- a/src/Bindings/WebPlugin.h
+++ /dev/null
@@ -1,80 +0,0 @@
-
-#pragma once
-
-struct HTTPRequest;
-
-
-
-
-
-// tolua_begin
-class cWebPlugin
-{
-public:
-	// tolua_end
-
-	struct cTab
-	{
-		AString m_Title;
-		AString m_SafeTitle;
-		int m_UserData;
-
-		cTab(const AString & a_Title, int a_UserData):
-			m_Title(a_Title),
-			m_SafeTitle(cWebPlugin::SafeString(a_Title)),
-			m_UserData(a_UserData)
-		{
-		}
-	};
-
-	typedef SharedPtr<cTab> cTabPtr;
-	typedef std::list<cTabPtr> cTabPtrs;
-	typedef std::list<std::pair<AString, AString>> cTabNames;
-
-
-	cWebPlugin();
-
-	virtual ~cWebPlugin();
-
-	// tolua_begin
-
-	/** Returns the title of the plugin, as it should be presented in the webadmin's pages tree. */
-	virtual const AString GetWebTitle(void) const = 0;
-
-	/** Sanitizes the input string, replacing spaces with underscores. */
-	static AString SafeString(const AString & a_String);
-
-	// tolua_end
-
-	virtual AString HandleWebRequest(const HTTPRequest & a_Request) = 0;
-
-	/** Adds a new web tab with the specified contents. */
-	void AddNewWebTab(const AString & a_Title, int a_UserData);
-
-	/** Removes all the tabs. */
-	void ClearTabs(void);
-
-	/** Returns all the tabs that this plugin has registered. */
-	const cTabPtrs & GetTabs(void) const { return m_Tabs; }
-
-	/** Returns all of the tabs that this plugin has registered. */
-	cTabNames GetTabNames(void) const;  // Exported in ManualBindings.cpp
-
-	/** Returns the tab that has the specified SafeTitle.
-	Returns nullptr if no such tab. */
-	cTabPtr GetTabBySafeTitle(const AString & a_SafeTitle) const;
-
-	std::pair<AString, AString> GetTabNameForRequest(const HTTPRequest & a_Request);
-
-private:
-	/** All tabs that this plugin has registered.
-	Protected against multithreaded access by m_CSTabs. */
-	cTabPtrs m_Tabs;
-
-	/** Protects m_Tabs against multithreaded access. */
-	mutable cCriticalSection m_CSTabs;
-};  // tolua_export
-
-
-
-
diff --git a/src/Entities/Player.h b/src/Entities/Player.h
index 2f1e892dc..f6e9da45e 100644
--- a/src/Entities/Player.h
+++ b/src/Entities/Player.h
@@ -224,11 +224,11 @@ public:
 	cWindow * GetWindow(void) { return m_CurrentWindow; }  // tolua_export
 	const cWindow * GetWindow(void) const { return m_CurrentWindow; }
 
-	/** Opens the specified window; closes the current one first using CloseWindow() */
-	void OpenWindow(cWindow * a_Window);  // Exported in ManualBindings.cpp
-
 	// tolua_begin
 
+	/** Opens the specified window; closes the current one first using CloseWindow() */
+	void OpenWindow(cWindow * a_Window);
+
 	/** Closes the current window, resets current window to m_InventoryWindow. A plugin may refuse the closing if a_CanRefuse is true */
 	void CloseWindow(bool a_CanRefuse = true);
 
diff --git a/src/Server.cpp b/src/Server.cpp
index 5548e77d1..8405109de 100644
--- a/src/Server.cpp
+++ b/src/Server.cpp
@@ -607,18 +607,35 @@ void cServer::PrintHelp(const AStringVector & a_Split, cCommandOutputCallback &
 
 void cServer::BindBuiltInConsoleCommands(void)
 {
+	// Create an empty handler - the actual handling for the commands is performed before they are handed off to cPluginManager
+	class cEmptyHandler:
+		public cPluginManager::cCommandHandler
+	{
+		virtual bool ExecuteCommand(
+			const AStringVector & a_Split,
+			cPlayer * a_Player,
+			const AString & a_Command,
+			cCommandOutputCallback * a_Output = nullptr
+		) override
+		{
+			return false;
+		}
+	};
+	auto handler = std::make_shared<cEmptyHandler>();
+
+	// Register internal commands:
 	cPluginManager * PlgMgr = cPluginManager::Get();
-	PlgMgr->BindConsoleCommand("help", nullptr, "Shows the available commands");
-	PlgMgr->BindConsoleCommand("reload", nullptr, "Reloads all plugins");
-	PlgMgr->BindConsoleCommand("restart", nullptr, "Restarts the server cleanly");
-	PlgMgr->BindConsoleCommand("stop", nullptr, "Stops the server cleanly");
-	PlgMgr->BindConsoleCommand("chunkstats", nullptr, "Displays detailed chunk memory statistics");
-	PlgMgr->BindConsoleCommand("load <pluginname>", nullptr, "Adds and enables the specified plugin");
-	PlgMgr->BindConsoleCommand("unload <pluginname>", nullptr, "Disables the specified plugin");
-	PlgMgr->BindConsoleCommand("destroyentities", nullptr, "Destroys all entities in all worlds");
+	PlgMgr->BindConsoleCommand("help",            nullptr, handler, "Shows the available commands");
+	PlgMgr->BindConsoleCommand("reload",          nullptr, handler, "Reloads all plugins");
+	PlgMgr->BindConsoleCommand("restart",         nullptr, handler, "Restarts the server cleanly");
+	PlgMgr->BindConsoleCommand("stop",            nullptr, handler, "Stops the server cleanly");
+	PlgMgr->BindConsoleCommand("chunkstats",      nullptr, handler, "Displays detailed chunk memory statistics");
+	PlgMgr->BindConsoleCommand("load",            nullptr, handler, "Adds and enables the specified plugin");
+	PlgMgr->BindConsoleCommand("unload",          nullptr, handler, "Disables the specified plugin");
+	PlgMgr->BindConsoleCommand("destroyentities", nullptr, handler, "Destroys all entities in all worlds");
 
 	#if defined(_MSC_VER) && defined(_DEBUG) && defined(ENABLE_LEAK_FINDER)
-	PlgMgr->BindConsoleCommand("dumpmem", nullptr, " - Dumps all used memory blocks together with their callstacks into memdump.xml");
+	PlgMgr->BindConsoleCommand("dumpmem", nullptr, handler, " - Dumps all used memory blocks together with their callstacks into memdump.xml");
 	#endif
 }
 
diff --git a/src/UI/Window.cpp b/src/UI/Window.cpp
index 5a2e55feb..4582d6cf4 100644
--- a/src/UI/Window.cpp
+++ b/src/UI/Window.cpp
@@ -307,7 +307,7 @@ bool cWindow::ClosedByPlayer(cPlayer & a_Player, bool a_CanRefuse)
 	// Checks whether the player is still holding an item
 	if (!a_Player.GetDraggingItem().IsEmpty())
 	{
-		LOGD("Player holds item! Dropping it...");
+		LOGD("Player is holding an item while closing their window, dropping it as a pickup...");
 		a_Player.TossHeldItem(a_Player.GetDraggingItem().m_ItemCount);
 	}
 
diff --git a/src/WebAdmin.cpp b/src/WebAdmin.cpp
index e43d749dd..5c08deb0d 100644
--- a/src/WebAdmin.cpp
+++ b/src/WebAdmin.cpp
@@ -2,10 +2,6 @@
 #include "Globals.h"  // NOTE: MSVC stupidness requires this to be the same across all modules
 
 #include "WebAdmin.h"
-#include "Bindings/WebPlugin.h"
-
-#include "Bindings/PluginManager.h"
-#include "Bindings/Plugin.h"
 
 #include "World.h"
 #include "Entities/Player.h"
@@ -87,9 +83,9 @@ public:
 // cWebAdmin:
 
 cWebAdmin::cWebAdmin(void) :
+	m_TemplateScript("<webadmin_template>"),
 	m_IsInitialized(false),
-	m_IsRunning(false),
-	m_TemplateScript("<webadmin_template>")
+	m_IsRunning(false)
 {
 }
 
@@ -106,40 +102,9 @@ cWebAdmin::~cWebAdmin()
 
 
 
-void cWebAdmin::AddPlugin(cWebPlugin * a_Plugin)
-{
-	m_Plugins.remove(a_Plugin);
-	m_Plugins.push_back(a_Plugin);
-}
-
-
-
-
-
-void cWebAdmin::RemovePlugin(cWebPlugin * a_Plugin)
-{
-	m_Plugins.remove(a_Plugin);
-}
-
-
-
-
-
 bool cWebAdmin::Init(void)
 {
-	if (!m_IniFile.ReadFile("webadmin.ini"))
-	{
-		LOGWARN("Regenerating webadmin.ini, all settings will be reset");
-		m_IniFile.AddHeaderComment(" This file controls the webadmin feature of Cuberite");
-		m_IniFile.AddHeaderComment(" Username format: [User:*username*]");
-		m_IniFile.AddHeaderComment(" Password format: Password=*password*; for example:");
-		m_IniFile.AddHeaderComment(" [User:admin]");
-		m_IniFile.AddHeaderComment(" Password=admin");
-		m_IniFile.SetValue("WebAdmin", "Ports", DEFAULT_WEBADMIN_PORTS);
-		m_IniFile.WriteFile("webadmin.ini");
-	}
-
-	if (!m_IniFile.GetValueSetB("WebAdmin", "Enabled", true))
+	if (!LoadIniFile())
 	{
 		// WebAdmin is disabled, bail out faking a success
 		return true;
@@ -147,31 +112,7 @@ bool cWebAdmin::Init(void)
 
 	LOGD("Initialising WebAdmin...");
 
-	// Initialize the WebAdmin template script and load the file
-	m_TemplateScript.Create();
-	m_TemplateScript.RegisterAPILibs();
-	if (!m_TemplateScript.LoadFile(FILE_IO_PREFIX "webadmin/template.lua"))
-	{
-		LOGWARN("Could not load WebAdmin template \"%s\". WebAdmin disabled!", FILE_IO_PREFIX "webadmin/template.lua");
-		m_TemplateScript.Close();
-		m_HTTPServer.Stop();
-		return false;
-	}
-
-	// Load the login template, provide a fallback default if not found:
-	if (!LoadLoginTemplate())
-	{
-		LOGWARN("Could not load WebAdmin login template \"%s\", using fallback template.", FILE_IO_PREFIX "webadmin/login_template.html");
-
-		// Sets the fallback template:
-		m_LoginTemplate = \
-		"<h1>Cuberite WebAdmin</h1>" \
-		"<center>" \
-		"<form method='get' action='webadmin/'>" \
-		"<input type='submit' value='Log in'>" \
-		"</form>" \
-		"</center>";
-	}
+	Reload();
 
 	// Read the ports to be used:
 	// Note that historically the ports were stored in the "Port" and "PortsIPv6" values
@@ -224,7 +165,7 @@ void cWebAdmin::Stop(void)
 
 
 
-bool cWebAdmin::LoadLoginTemplate(void)
+bool cWebAdmin::LoadLoginPage(void)
 {
 	cFile File(FILE_IO_PREFIX "webadmin/login_template.html", cFile::fmRead);
 	if (!File.IsOpen())
@@ -238,7 +179,8 @@ bool cWebAdmin::LoadLoginTemplate(void)
 		return false;
 	}
 
-	m_LoginTemplate = TemplateContent;
+	cCSLock Lock(m_CS);
+	m_LoginPage = TemplateContent;
 	return true;
 }
 
@@ -246,6 +188,89 @@ bool cWebAdmin::LoadLoginTemplate(void)
 
 
 
+void cWebAdmin::RemoveAllPluginWebTabs(const AString & a_PluginName)
+{
+	cCSLock lock(m_CS);
+	m_WebTabs.erase(std::remove_if(m_WebTabs.begin(), m_WebTabs.end(), [=](cWebTabPtr a_CBWebTab)
+		{
+			return (a_CBWebTab->m_PluginName == a_PluginName);
+		}),
+		m_WebTabs.end()
+	);
+}
+
+
+
+
+
+void cWebAdmin::Reload(void)
+{
+	cCSLock lock(m_CS);
+	if (!LoadIniFile())
+	{
+		// We are asked to disable the webadmin, cannot do that, so warn the admin:
+		LOGWARNING(
+			"WebAdmin was previously enabled and now the settings say to disable it."
+			" This will not take effect until you restart the server."
+		);
+	}
+
+	// Initialize the WebAdmin template script and reload the file:
+	if (m_TemplateScript.IsValid())
+	{
+		m_TemplateScript.Close();
+	}
+	m_TemplateScript.Create();
+	m_TemplateScript.RegisterAPILibs();
+	if (!m_TemplateScript.LoadFile(FILE_IO_PREFIX "webadmin/template.lua"))
+	{
+		LOGWARN("Could not load WebAdmin template \"%s\". WebAdmin will not work properly!", FILE_IO_PREFIX "webadmin/template.lua");
+		m_TemplateScript.Close();
+	}
+
+	// Load the login template, provide a fallback default if not found:
+	if (!LoadLoginPage())
+	{
+		LOGWARN("Could not load WebAdmin login page \"%s\", using fallback template.", FILE_IO_PREFIX "webadmin/login_template.html");
+
+		// Set the fallback:
+		m_LoginPage = \
+		"<h1>Cuberite WebAdmin</h1>" \
+		"<center>" \
+		"<form method='get' action='webadmin/'>" \
+		"<input type='submit' value='Log in'>" \
+		"</form>" \
+		"</center>";
+	}
+}
+
+
+
+
+
+bool cWebAdmin::LoadIniFile(void)
+{
+	m_IniFile.Clear();
+	if (!m_IniFile.ReadFile("webadmin.ini"))
+	{
+		LOGWARN("Regenerating webadmin.ini, all settings will be reset");
+		m_IniFile.AddHeaderComment(" This file controls the webadmin feature of Cuberite");
+		m_IniFile.AddHeaderComment(" It specifies whether webadmin is enabled, and what logins are allowed. ");
+		m_IniFile.AddHeaderComment(" Username format: [User:*username*]");
+		m_IniFile.AddHeaderComment(" Password format: Password=*password*; for example:");
+		m_IniFile.AddHeaderComment(" [User:admin]");
+		m_IniFile.AddHeaderComment(" Password=admin");
+		m_IniFile.SetValue("WebAdmin", "Ports", DEFAULT_WEBADMIN_PORTS);
+		m_IniFile.WriteFile("webadmin.ini");
+	}
+
+	return m_IniFile.GetValueSetB("WebAdmin", "Enabled", true);
+}
+
+
+
+
+
 void cWebAdmin::HandleWebadminRequest(cHTTPServerConnection & a_Connection, cHTTPIncomingRequest & a_Request)
 {
 	if (!a_Request.HasAuth())
@@ -255,17 +280,20 @@ void cWebAdmin::HandleWebadminRequest(cHTTPServerConnection & a_Connection, cHTT
 	}
 
 	// Check auth:
-	AString UserPassword = m_IniFile.GetValue("User:" + a_Request.GetAuthUsername(), "Password", "");
-	if ((UserPassword == "") || (a_Request.GetAuthPassword() != UserPassword))
 	{
-		a_Connection.SendNeedAuth("Cuberite WebAdmin - bad username or password");
-		return;
+		cCSLock Lock(m_CS);
+		AString UserPassword = m_IniFile.GetValue("User:" + a_Request.GetAuthUsername(), "Password", "");
+		if ((UserPassword == "") || (a_Request.GetAuthPassword() != UserPassword))
+		{
+			a_Connection.SendNeedAuth("Cuberite WebAdmin - bad username or password");
+			return;
+		}
 	}
 
 	// Check if the contents should be wrapped in the template:
 	auto BareURL = a_Request.GetURLPath();
 	ASSERT(BareURL.length() > 0);
-	bool ShouldWrapInTemplate = ((BareURL.length() > 1) && (BareURL[1] != '~'));
+	bool ShouldWrapInTemplate = (!BareURL.empty() && (BareURL[1] != '~'));
 
 	// Retrieve the request data:
 	auto Data = std::static_pointer_cast<cWebadminRequestData>(a_Request.GetUserData());
@@ -312,6 +340,7 @@ void cWebAdmin::HandleWebadminRequest(cHTTPServerConnection & a_Connection, cHTT
 	// Try to get the template from the Lua template script
 	if (ShouldWrapInTemplate)
 	{
+		cCSLock Lock(m_CS);
 		if (m_TemplateScript.Call("ShowPage", this, &TemplateRequest, cLuaState::Return, Template))
 		{
 			cHTTPOutgoingResponse Resp;
@@ -325,59 +354,12 @@ void cWebAdmin::HandleWebadminRequest(cHTTPServerConnection & a_Connection, cHTT
 		return;
 	}
 
-	AString BaseURL = GetBaseURL(BareURL);
-	AString Menu;
-	Template = "{CONTENT}";
-	AString FoundPlugin;
-
-	for (PluginList::iterator itr = m_Plugins.begin(); itr != m_Plugins.end(); ++itr)
-	{
-		cWebPlugin * WebPlugin = *itr;
-		std::list< std::pair<AString, AString> > NameList = WebPlugin->GetTabNames();
-		for (std::list< std::pair<AString, AString> >::iterator Names = NameList.begin(); Names != NameList.end(); ++Names)
-		{
-			Menu += "<li><a href='" + BaseURL + WebPlugin->GetWebTitle().c_str() + "/" + (*Names).second + "'>" + (*Names).first + "</a></li>";
-		}
-	}
-
-	sWebAdminPage Page = GetPage(TemplateRequest.Request);
-	AString Content = Page.Content;
-	FoundPlugin = Page.PluginName;
-	if (!Page.TabName.empty())
-	{
-		FoundPlugin += " - " + Page.TabName;
-	}
-
-	if (FoundPlugin.empty())  // Default page
-	{
-		Content = GetDefaultPage();
-	}
-
-	int MemUsageKiB = cRoot::GetPhysicalRAMUsage();
-	if (MemUsageKiB > 0)
-	{
-		ReplaceString(Template, "{MEM}",       Printf("%.02f", static_cast<double>(MemUsageKiB) / 1024));
-		ReplaceString(Template, "{MEMKIB}",    Printf("%d", MemUsageKiB));
-	}
-	else
-	{
-		ReplaceString(Template, "{MEM}",       "unknown");
-		ReplaceString(Template, "{MEMKIB}",    "unknown");
-	}
-	ReplaceString(Template, "{USERNAME}",    a_Request.GetAuthUsername());
-	ReplaceString(Template, "{MENU}",        Menu);
-	ReplaceString(Template, "{PLUGIN_NAME}", FoundPlugin);
-	ReplaceString(Template, "{CONTENT}",     Content);
-	ReplaceString(Template, "{TITLE}",       "Cuberite");
-
-	AString NumChunks;
-	Printf(NumChunks, "%d", cRoot::Get()->GetTotalChunkCount());
-	ReplaceString(Template, "{NUMCHUNKS}", NumChunks);
-
-	cHTTPOutgoingResponse Resp;
-	Resp.SetContentType("text/html");
-	a_Connection.Send(Resp);
-	a_Connection.Send(Template.c_str(), Template.length());
+	// Send the un-decorated page content:
+	auto page = GetPage(TemplateRequest.Request);
+	cHTTPOutgoingResponse resp;
+	resp.SetContentType(page.ContentType);
+	a_Connection.Send(resp);
+	a_Connection.Send(page.Content.c_str(), page.Content.length());
 	a_Connection.FinishResponse();
 }
 
@@ -392,7 +374,7 @@ void cWebAdmin::HandleRootRequest(cHTTPServerConnection & a_Connection, cHTTPInc
 	cHTTPOutgoingResponse Resp;
 	Resp.SetContentType("text/html");
 	a_Connection.Send(Resp);
-	a_Connection.Send(m_LoginTemplate);
+	a_Connection.Send(m_LoginPage);
 	a_Connection.FinishResponse();
 }
 
@@ -406,7 +388,7 @@ void cWebAdmin::HandleFileRequest(cHTTPServerConnection & a_Connection, cHTTPInc
 	std::replace(FileURL.begin(), FileURL.end(), '\\', '/');
 
 	// Remove all leading backslashes:
-	if (FileURL[0] == '/')
+	if (!FileURL.empty() && (FileURL[0] == '/'))
 	{
 		size_t FirstCharToRead = FileURL.find_first_not_of('/');
 		if (FirstCharToRead != AString::npos)
@@ -418,8 +400,9 @@ void cWebAdmin::HandleFileRequest(cHTTPServerConnection & a_Connection, cHTTPInc
 	// Remove all "../" strings:
 	ReplaceString(FileURL, "../", "");
 
-	bool LoadedSuccessfull = false;
+	// Read the file contents and guess its mime-type, based on the extension:
 	AString Content = "<h2>404 Not Found</h2>";
+	AString ContentType;
 	AString Path = Printf(FILE_IO_PREFIX "webadmin/files/%s", FileURL.c_str());
 	if (cFile::IsFile(Path))
 	{
@@ -427,18 +410,17 @@ void cWebAdmin::HandleFileRequest(cHTTPServerConnection & a_Connection, cHTTPInc
 		AString FileContent;
 		if (File.IsOpen() && (File.ReadRestOfFile(FileContent) != -1))
 		{
-			LoadedSuccessfull = true;
-			Content = FileContent;
+			std::swap(Content, FileContent);
+			size_t LastPointPosition = Path.find_last_of('.');
+			if (LastPointPosition != AString::npos)
+			{
+				ContentType = GetContentTypeFromFileExt(Path.substr(LastPointPosition + 1));
+			}
 		}
 	}
-
-	// Find content type (The currently method is very bad. We should change it later)
-	AString ContentType = "text/html";
-	size_t LastPointPosition = Path.find_last_of('.');
-	if (LoadedSuccessfull && (LastPointPosition != AString::npos) && (LastPointPosition < Path.length()))
+	if (ContentType.empty())
 	{
-		AString FileExtension = Path.substr(LastPointPosition + 1);
-		ContentType = GetContentTypeFromFileExt(FileExtension);
+		ContentType = "application/unknown";
 	}
 
 	// Send the response:
@@ -456,32 +438,36 @@ void cWebAdmin::HandleFileRequest(cHTTPServerConnection & a_Connection, cHTTPInc
 AString cWebAdmin::GetContentTypeFromFileExt(const AString & a_FileExtension)
 {
 	static bool IsInitialized = false;
-	static std::map<AString, AString> ContentTypeMap;
+	static AStringMap ContentTypeMap;
 	if (!IsInitialized)
 	{
 		// Initialize the ContentTypeMap:
-		ContentTypeMap["png"]  = "image/png";
-		ContentTypeMap["fif"]  = "image/fif";
-		ContentTypeMap["gif"]  = "image/gif";
-		ContentTypeMap["jpeg"] = "image/jpeg";
-		ContentTypeMap["jpg"]  = "image/jpeg";
-		ContentTypeMap["jpe"]  = "image/jpeg";
-		ContentTypeMap["tiff"] = "image/tiff";
-		ContentTypeMap["ico"]  = "image/ico";
-		ContentTypeMap["csv"]  = "image/comma-separated-values";
-		ContentTypeMap["css"]  = "text/css";
-		ContentTypeMap["js"]   = "text/javascript";
-		ContentTypeMap["txt"]  = "text/plain";
-		ContentTypeMap["rtx"]  = "text/richtext";
-		ContentTypeMap["xml"]  = "text/xml";
-	}
-
-	AString FileExtension = StrToLower(a_FileExtension);
-	if (ContentTypeMap.find(a_FileExtension) == ContentTypeMap.end())
-	{
-		return "text/html";
-	}
-	return ContentTypeMap[FileExtension];
+		ContentTypeMap["png"]   = "image/png";
+		ContentTypeMap["fif"]   = "image/fif";
+		ContentTypeMap["gif"]   = "image/gif";
+		ContentTypeMap["jpeg"]  = "image/jpeg";
+		ContentTypeMap["jpg"]   = "image/jpeg";
+		ContentTypeMap["jpe"]   = "image/jpeg";
+		ContentTypeMap["tiff"]  = "image/tiff";
+		ContentTypeMap["ico"]   = "image/ico";
+		ContentTypeMap["csv"]   = "text/csv";
+		ContentTypeMap["css"]   = "text/css";
+		ContentTypeMap["js"]    = "text/javascript";
+		ContentTypeMap["txt"]   = "text/plain";
+		ContentTypeMap["rtx"]   = "text/richtext";
+		ContentTypeMap["rtf"]   = "text/richtext";
+		ContentTypeMap["xml"]   = "text/xml";
+		ContentTypeMap["html"]  = "text/html";
+		ContentTypeMap["htm"]   = "text/html";
+		ContentTypeMap["xhtml"] = "application/xhtml+xml";  // Not recomended for IE6, but no-one uses that anymore
+	}
+
+	auto itr = ContentTypeMap.find(StrToLower(a_FileExtension));
+	if (itr == ContentTypeMap.end())
+	{
+		return AString();
+	}
+	return itr->second;
 }
 
 
@@ -490,86 +476,93 @@ AString cWebAdmin::GetContentTypeFromFileExt(const AString & a_FileExtension)
 
 sWebAdminPage cWebAdmin::GetPage(const HTTPRequest & a_Request)
 {
-	sWebAdminPage Page;
-	AStringVector Split = StringSplit(a_Request.Path, "/");
+	sWebAdminPage page;
+	auto split = StringSplit(a_Request.Path, "/");
+
+	// If no specific page was requested, return an empty object:
+	if (split.size() <= 2)
+	{
+		return page;
+	}
 
-	// Find the plugin that corresponds to the requested path
-	AString FoundPlugin;
-	if (Split.size() > 1)
+	// Find the WebTab handler responsible for the request:
+	cWebTabPtr tab;
 	{
-		for (PluginList::iterator itr = m_Plugins.begin(); itr != m_Plugins.end(); ++itr)
+		cCSLock Lock(m_CS);
+		for (auto & wt: m_WebTabs)
 		{
-			if ((*itr)->GetWebTitle() == Split[1])
+			if (
+				(wt->m_PluginName == split[1]) &&
+				(wt->m_UrlPath == split[2])
+			)
 			{
-				Page.Content = (*itr)->HandleWebRequest(a_Request);
-				cWebPlugin * WebPlugin = *itr;
-				FoundPlugin = WebPlugin->GetWebTitle();
-				AString TabName = WebPlugin->GetTabNameForRequest(a_Request).first;
-				Page.PluginName = FoundPlugin;
-				Page.TabName = TabName;
+				tab = wt;
 				break;
 			}
+		}  // for wt - m_WebTabs[]
+	}
+
+	// If a WebTab handler was found, call it:
+	if (tab != nullptr)
+	{
+		page.ContentType = "text/html";  // Default to HTML content type, unless overridden by a plugin
+		if (!tab->m_Callback->Call(a_Request, split[1], page.Content, page.ContentType))
+		{
+			page.Content = GetHTMLEscapedString(Printf(
+				"WebTab callback for plugin %s, page %s has failed.",
+				tab->m_PluginName.c_str(), tab->m_Title.c_str()
+			));
 		}
+		page.PluginName = tab->m_PluginName;
+		page.TabTitle = tab->m_Title;
+		page.TabUrlPath = split[1];
 	}
 
-	// Return the page contents
-	return Page;
+	return page;
 }
 
 
 
 
 
-AString cWebAdmin::GetDefaultPage(void)
+AString cWebAdmin::GetBaseURL(const AString & a_URL)
 {
-	AString Content;
-	Content += "<h4>Server Name:</h4>";
-	Content += "<p>" + AString( cRoot::Get()->GetServer()->GetServerID()) + "</p>";
+	return GetBaseURL(StringSplit(a_URL, "/"));
+}
 
-	// Display a list of all plugins:
-	Content += "<h4>Plugins:</h4><ul>";
-	struct cPluginCallback:
-		public cPluginManager::cPluginCallback
-	{
-		AString & m_Content;
 
-		cPluginCallback(AString & a_Content):
-			m_Content(a_Content)
-		{
-		}
 
-		virtual bool Item(cPlugin * a_Plugin) override
-		{
-			if (a_Plugin->IsLoaded())
-			{
-				AppendPrintf(m_Content, "<li>%s V.%i</li>", a_Plugin->GetName().c_str(), a_Plugin->GetVersion());
-			}
-			return false;
-		}
-	} Callback(Content);
-	cPluginManager::Get()->ForEachPlugin(Callback);
-	Content += "</ul>";
 
-	// Display a list of all players:
-	Content += "<h4>Players:</h4><ul>";
-	cPlayerAccum PlayerAccum;
-	cWorld * World = cRoot::Get()->GetDefaultWorld();  // TODO - Create a list of worlds and players
-	if (World != nullptr)
-	{
-		World->ForEachPlayer(PlayerAccum);
-		Content.append(PlayerAccum.m_Contents);
-	}
-	Content += "</ul><br>";
-	return Content;
+
+void cWebAdmin::AddWebTab(
+	const AString & a_Title,
+	const AString & a_UrlPath,
+	const AString & a_PluginName,
+	SharedPtr<cWebAdmin::cWebTabCallback> a_Callback
+)
+{
+	cCSLock lock(m_CS);
+	m_WebTabs.emplace_back(std::make_shared<cWebTab>(a_Title, a_UrlPath, a_PluginName, a_Callback));
 }
 
 
 
 
 
-AString cWebAdmin::GetBaseURL(const AString & a_URL)
+bool cWebAdmin::DelWebTab(const AString & a_UrlPath)
 {
-	return GetBaseURL(StringSplit(a_URL, "/"));
+	cCSLock lock(m_CS);
+	for (auto itr = m_WebTabs.begin(), end = m_WebTabs.end(); itr != end; ++itr)
+	{
+		if ((*itr)->m_UrlPath == a_UrlPath)
+		{
+			m_WebTabs.erase(itr);
+			return true;
+		}
+	}  // for itr - m_WebTabs[]
+
+	// Not found:
+	return false;
 }
 
 
diff --git a/src/WebAdmin.h b/src/WebAdmin.h
index 5e48f597c..b76ca6df8 100644
--- a/src/WebAdmin.h
+++ b/src/WebAdmin.h
@@ -89,14 +89,14 @@ struct HTTPTemplateRequest
 
 
 
-// tolua_begin
 struct sWebAdminPage
 {
 	AString Content;
 	AString PluginName;
-	AString TabName;
+	AString TabTitle;
+	AString TabUrlPath;
+	AString ContentType;
 };
-// tolua_end
 
 
 
@@ -111,7 +111,49 @@ class cWebAdmin :
 public:
 	// tolua_end
 
-	typedef std::list< cWebPlugin* > PluginList;
+	/** Interface for getting the content of a single WebTab. */
+	class cWebTabCallback abstract
+	{
+	public:
+		// Force a virtual destructor in descendants
+		virtual ~cWebTabCallback() {}
+
+		/** Returns the contents for the specified request.
+		Returns true if the call was successful, false on an error.
+		a_Request is the full HTTP request object, as received from the client.
+		a_UrlPath is the UrlPath of the WebTab registered for this request, as parsed from a_Request.
+		Descendants should fill a_Content with the page contents
+		and optionally set a_ContentType [defaults to "text/html"] */
+		virtual bool Call(
+			const HTTPRequest & a_Request,
+			const AString & a_UrlPath,
+			AString & a_Content,
+			AString & a_ContentType
+		) = 0;
+	};
+
+
+	/** Container for a single web tab.
+	Each web tab has a title, URL path and an associated plugin's name.
+	Each web tab is registered with a callback to provide the content. */
+	class cWebTab
+	{
+	public:
+		AString m_Title;
+		AString m_UrlPath;
+		AString m_PluginName;
+		SharedPtr<cWebTabCallback> m_Callback;
+
+		cWebTab(const AString & a_Title, const AString & a_UrlPath, const AString & a_PluginName, SharedPtr<cWebTabCallback> a_Callback):
+			m_Title(a_Title),
+			m_UrlPath(a_UrlPath),
+			m_PluginName(a_PluginName),
+			m_Callback(a_Callback)
+		{
+		}
+	};
+	typedef SharedPtr<cWebTab> cWebTabPtr;
+	typedef std::vector<cWebTabPtr> cWebTabPtrs;
 
 
 	cWebAdmin(void);
@@ -120,81 +162,115 @@ public:
 	/** Initializes the object. Returns true if successfully initialized and ready to start */
 	bool Init(void);
 
-	/** Starts the HTTP server taking care of the admin. Returns true if successful */
+	/** Starts the HTTP server taking care of the webadmin. Returns true if successful */
 	bool Start(void);
 
 	/** Stops the HTTP server, if it was started. */
 	void Stop(void);
 
-	/** Loads the login template. Returns true if the loading succeeds, false if not. */
-	bool LoadLoginTemplate(void);
-
-	void AddPlugin(cWebPlugin * a_Plugin);
-	void RemovePlugin(cWebPlugin * a_Plugin);
+	/** Loads the login template into m_LoginPage.
+	Returns true if the loading succeeds, false if not. */
+	bool LoadLoginPage(void);
 
-	// TODO: Convert this to the auto-locking callback mechanism used for looping players in worlds and such
-	PluginList GetPlugins() const { return m_Plugins; }  // >> EXPORTED IN MANUALBINDINGS <<
+	/** Returns a copy of all the registered web tabs.
+	Exported to Lua in ManualBindings.cpp. */
+	cWebTabPtrs GetAllWebTabs(void) { return m_WebTabs; }
 
-	// tolua_begin
+	/** Removes all WebTabs registered by the specified plugin. */
+	void RemoveAllPluginWebTabs(const AString & a_PluginName);
 
+	/** Returns the (inner) page contents for the specified request.
+	Calls the appropriate WebTab handler to get the contents.
+	Exported to Lua in ManualBindings.cpp. */
 	sWebAdminPage GetPage(const HTTPRequest & a_Request);
 
-	/** Returns the contents of the default page - the list of plugins and players */
-	AString GetDefaultPage(void);
+	// tolua_begin
 
-	/** Returns the prefix needed for making a link point to the webadmin root from the given URL ("../../../webadmin"-style) */
-	AString GetBaseURL(const AString & a_URL);
+	/** Reloads m_IniFile, m_LoginPage and m_TemplateScript.
+	Note that reloading will not change the "enabled" state of the server, and it will not update listening ports. */
+	void Reload(void);
 
-	/** Returns the list of ports used for the webadmin. */
+	/** Returns the list of ports on which the webadmin is configured to listen. */
 	AString GetPorts(void) const { return StringsConcat(m_Ports, ','); }
-
-	/** OBSOLETE: Returns the list of IPv4 ports used for the webadmin.
-	Currently there is no distinction between IPv4 and IPv6; use GetPorts() instead. */
-	AString GetIPv4Ports(void) const { return GetPorts(); }
-
-	/** OBSOLETE: Returns the list of IPv6 ports used for the webadmin.
-	Currently there is no distinction between IPv4 and IPv6; use GetPorts() instead. */
-	AString GetIPv6Ports(void) const { return GetPorts(); }
-
 	// tolua_end
 
-	/** Escapes text passed into it, so it can be embedded into html. */
+	/** Adds a new WebTab handler.
+	a_Title is the display title of the tab
+	a_UrlPath is the part of the URL that uniquely identifies this tab.
+	a_PluginName is the display name of the plugin creating this tab.
+	a_Callback is used to provide the actual WebTab contents, when requested.
+	Exported in ManualBindings.cpp. */
+	void AddWebTab(
+		const AString & a_Title,
+		const AString & a_UrlPath,
+		const AString & a_PluginName,
+		SharedPtr<cWebTabCallback> a_Callback
+	);
+
+	/** Removes the WebTab with the specified URL path.
+	Returns true if WebTab was found and removed, false if not found.
+	Exported in ManualBindings.cpp */
+	bool DelWebTab(const AString & a_UrlPath);
+
+	/** Escapes text passed into it, so it can be embedded into html.
+	Exported to Lua in ManualBindings.cpp. */
 	static AString GetHTMLEscapedString(const AString & a_Input);
 
-	/** Escapes the string for use in an URL */
+	/** Escapes the string for use in an URL
+	Exported to Lua in ManualBindings.cpp. */
 	static AString GetURLEncodedString(const AString & a_Input);
 
+	/** Returns the prefix needed for making a link point to the webadmin root from the given URL ("../../../webadmin"-style).
+	Exported to Lua in ManualBindings.cpp. */
+	static AString GetBaseURL(const AString & a_URL);
+
 	/** Returns the prefix needed for making a link point to the webadmin root from the given URL ("../../../webadmin"-style) */
 	static AString GetBaseURL(const AStringVector & a_URLSplit);
 
-	/** Returns the content type from the file extension. If the extension isn't in the list, the function returns "text/html" */
+	/** Returns the content type from the file extension.
+	If the extension isn't in the list, the function returns an empty string.
+	Exported to Lua in ManualBindings.cpp. */
 	static AString GetContentTypeFromFileExt(const AString & a_FileExtension);
 
 protected:
 
+	/** Protects m_WebTabs, m_TemplateScript, m_LoginTemplate and m_IniFile against multithreaded access. */
+	cCriticalSection m_CS;
+
+	/** All registered WebTab handlers.
+	Protected against multithreaded access by m_CS. */
+	cWebTabPtrs m_WebTabs;
+
+	/** The Lua template script to provide templates.
+	Protected against multithreaded access by m_CS. */
+	cLuaState m_TemplateScript;
+
+	/** The HTML page that provides the login.
+	Protected against multithreaded access by m_CS. */
+	AString m_LoginPage;
+
+	/** The webadmin.ini file, used for the settings and allowed logins.
+	Protected against multithreaded access by m_CS. */
+	cIniFile m_IniFile;
+
 	/** Set to true if Init() succeeds and the webadmin isn't to be disabled */
 	bool m_IsInitialized;
 
 	/** Set to true if Start() succeeds in starting the server, reset back to false in Stop(). */
 	bool m_IsRunning;
 
-	/** The webadmin.ini file, used for the settings and allowed logins */
-	cIniFile   m_IniFile;
-
-	PluginList m_Plugins;
-
 	/** The ports on which the webadmin is running. */
 	AStringVector m_Ports;
 
-	/** The Lua template script to provide templates: */
-	cLuaState m_TemplateScript;
-
-	/** The template that provides the login site: */
-	AString m_LoginTemplate;
-
 	/** The HTTP server which provides the underlying HTTP parsing, serialization and events */
 	cHTTPServer m_HTTPServer;
 
+
+	/** Loads webadmin.ini into m_IniFile.
+	Creates a default file if it doesn't exist.
+	Returns true if webadmin is enabled, false if disabled. */
+	bool LoadIniFile(void);
+
 	/** Handles requests coming to the "/webadmin" or "/~webadmin" URLs */
 	void HandleWebadminRequest(cHTTPServerConnection & a_Connection, cHTTPIncomingRequest & a_Request);