Fixed plugin hook calls when unloading plugins.

If a plugin installs any hooks in its Initialize method and then causes the Lua runtime to abort, the server asserted because the hooks were called while the plugin was being unloaded.

src/Bindings/PluginLua.cpp

@@ -208,6 +208,10 @@ 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)
 	{
@@ -222,6 +226,10 @@ 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)
@@ -242,6 +250,10 @@ 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)
@@ -262,6 +274,10 @@ bool cPluginLua::OnBlockToPickups(cWorld & a_World, cEntity * a_Digger, int a_Bl
 bool cPluginLua::OnChat(cPlayer & a_Player, AString & a_Message)
 {
 	cCSLock Lock(m_CriticalSection);
+	if (!m_LuaState.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)
@@ -282,6 +298,10 @@ 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)
@@ -302,6 +322,10 @@ 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)
@@ -322,6 +346,10 @@ 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)
@@ -342,6 +370,10 @@ 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)
@@ -362,6 +394,10 @@ 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)
@@ -382,6 +418,10 @@ 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)
@@ -402,6 +442,10 @@ 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)
@@ -422,6 +466,10 @@ 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)
@@ -442,6 +490,10 @@ 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)
@@ -462,6 +514,10 @@ bool cPluginLua::OnEntityAddEffect(cEntity & a_Entity, int a_EffectType, int a_E
 bool cPluginLua::OnExecuteCommand(cPlayer * a_Player, const AStringVector & a_Split)
 {
 	cCSLock Lock(m_CriticalSection);
+	if (!m_LuaState.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)
@@ -482,6 +538,10 @@ 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())
+	{
+		return false;
+	}
 	bool res = false;
 	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_EXPLODED];
 	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
@@ -519,6 +579,10 @@ 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())
+	{
+		return false;
+	}
 	bool res = false;
 	cLuaRefs & Refs = m_HookMap[cPluginManager::HOOK_EXPLODING];
 	for (cLuaRefs::iterator itr = Refs.begin(), end = Refs.end(); itr != end; ++itr)
@@ -556,6 +620,10 @@ 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)
@@ -576,8 +644,11 @@ 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)
 	{
@@ -597,6 +668,10 @@ 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)
@@ -617,6 +692,10 @@ bool cPluginLua::OnHopperPushingItem(cWorld & a_World, cHopperEntity & a_Hopper,
 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)
@@ -637,6 +716,10 @@ bool cPluginLua::OnKilling(cEntity & a_Victim, cEntity * a_Killer, TakeDamageInf
 bool cPluginLua::OnLogin(cClientHandle & a_Client, int 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)
@@ -657,6 +740,10 @@ bool cPluginLua::OnLogin(cClientHandle & a_Client, int a_ProtocolVersion, const
 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)
@@ -677,6 +764,10 @@ 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)
@@ -697,6 +788,10 @@ 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)
@@ -717,6 +812,10 @@ 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)
@@ -737,6 +836,10 @@ 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)
@@ -757,6 +860,10 @@ 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)
@@ -777,6 +884,10 @@ 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)
@@ -797,6 +908,10 @@ 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)
@@ -817,6 +932,10 @@ 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)
@@ -837,6 +956,10 @@ 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)
@@ -857,6 +980,10 @@ 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)
@@ -877,6 +1004,10 @@ 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)
@@ -897,6 +1028,10 @@ 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)
@@ -922,6 +1057,10 @@ 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)
@@ -947,6 +1086,10 @@ 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)
@@ -967,6 +1110,10 @@ 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)
@@ -987,6 +1134,10 @@ 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)
@@ -1007,6 +1158,10 @@ 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)
@@ -1027,6 +1182,10 @@ 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)
@@ -1047,6 +1206,10 @@ 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)
@@ -1067,6 +1230,10 @@ 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)
@@ -1087,6 +1254,10 @@ 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)
@@ -1107,6 +1278,10 @@ 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)
@@ -1127,6 +1302,10 @@ 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)
@@ -1147,6 +1326,10 @@ bool cPluginLua::OnPluginMessage(cClientHandle & a_Client, const AString & a_Cha
 bool cPluginLua::OnPluginsLoaded(void)
 {
 	cCSLock Lock(m_CriticalSection);
+	if (!m_LuaState.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)
@@ -1165,6 +1348,10 @@ 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)
@@ -1185,6 +1372,10 @@ 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)
@@ -1205,6 +1396,10 @@ 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)
@@ -1225,6 +1420,10 @@ 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)
@@ -1245,6 +1444,10 @@ 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())
+	{
+		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)
@@ -1265,6 +1468,10 @@ 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)
@@ -1285,6 +1492,10 @@ 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)
@@ -1305,6 +1516,10 @@ 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)
@@ -1325,6 +1540,10 @@ 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)
@@ -1345,6 +1564,10 @@ 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)
@@ -1370,6 +1593,10 @@ bool cPluginLua::OnUpdatedSign(
 )
 {
 	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)
@@ -1395,6 +1622,10 @@ bool cPluginLua::OnUpdatingSign(
 )
 {
 	cCSLock Lock(m_CriticalSection);
+	if (!m_LuaState.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)
@@ -1415,6 +1646,10 @@ 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)
@@ -1435,6 +1670,10 @@ bool cPluginLua::OnWeatherChanged(cWorld & a_World)
 bool cPluginLua::OnWeatherChanging(cWorld & a_World, eWeather & a_NewWeather)
 {
 	cCSLock Lock(m_CriticalSection);
+	if (!m_LuaState.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)
@@ -1455,6 +1694,10 @@ 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)
 	{
@@ -1470,6 +1713,10 @@ 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)
 	{