15 files changed, 348 insertions, 54 deletions

diff --git a/MCServer/Plugins/APIDump/APIDesc.lua b/MCServer/Plugins/APIDump/APIDesc.lua
index 9f303ff0e..b238a3b6c 100644
--- a/MCServer/Plugins/APIDump/APIDesc.lua
+++ b/MCServer/Plugins/APIDump/APIDesc.lua
@@ -2020,6 +2020,7 @@ cPluginManager.AddHook(cPluginManager.HOOK_CHAT, OnChatMessage);
 				SetMaxPlayers = { Params = "number", Notes = "Sets the max amount of players who can join." },
 				GetNumPlayers = { Return = "number", Notes = "Returns the amount of players online." },
 				GetServerID = { Return = "string", Notes = "Returns the ID of the server?" },
+				IsHardcore = { Params = "", Return = "bool", Notes = "Returns true if the server is hardcore (players get banned on death)." },
 			},
 			Constants =
 			{
diff --git a/Tools/ProtoProxy/Connection.cpp b/Tools/ProtoProxy/Connection.cpp
index 9821c9056..385caa2ce 100644
--- a/Tools/ProtoProxy/Connection.cpp
+++ b/Tools/ProtoProxy/Connection.cpp
@@ -2205,8 +2205,8 @@ bool cConnection::HandleServerSpawnNamedEntity(void)
 	CreateHexDump(HexDump, Metadata.data(), Metadata.size(), 32);
 	Log("Received a PACKET_SPAWN_NAMED_ENTITY from the server:");
 	Log("  EntityID = %u (0x%x)", EntityID, EntityID);
-	Log("  UUID = %s", EntityUUID.c_str());
-	Log("  Name = %s", EntityName.c_str());
+	Log("  UUID = \"%s\"", EntityUUID.c_str());
+	Log("  Name = \"%s\"", EntityName.c_str());
 	Log("  Pos = %s", PrintableAbsIntTriplet(PosX, PosY, PosZ).c_str());
 	Log("  Rotation = <yaw %d, pitch %d>", Yaw, Pitch);
 	Log("  CurrentItem = %d", CurrentItem);
diff --git a/source/Bindings.cpp b/source/Bindings.cpp
index bc96bd098..5e1fc4c8e 100644
--- a/source/Bindings.cpp
+++ b/source/Bindings.cpp
@@ -1,6 +1,6 @@
 /*
 ** Lua binding: AllToLua
-** Generated automatically by tolua++-1.0.92 on 11/09/13 19:50:08.
+** Generated automatically by tolua++-1.0.92 on 11/10/13 18:40:47.
 */
 
 #ifndef __cplusplus
@@ -15845,6 +15845,38 @@ static int tolua_AllToLua_cItem_IsFullStack00(lua_State* tolua_S)
 }
 #endif //#ifndef TOLUA_DISABLE
 
+/* method: GetMaxStackSize of class  cItem */
+#ifndef TOLUA_DISABLE_tolua_AllToLua_cItem_GetMaxStackSize00
+static int tolua_AllToLua_cItem_GetMaxStackSize00(lua_State* tolua_S)
+{
+#ifndef TOLUA_RELEASE
+ tolua_Error tolua_err;
+ if (
+     !tolua_isusertype(tolua_S,1,"const cItem",0,&tolua_err) ||
+     !tolua_isnoobj(tolua_S,2,&tolua_err)
+ )
+  goto tolua_lerror;
+ else
+#endif
+ {
+  const cItem* self = (const cItem*)  tolua_tousertype(tolua_S,1,0);
+#ifndef TOLUA_RELEASE
+  if (!self) tolua_error(tolua_S,"invalid 'self' in function 'GetMaxStackSize'", NULL);
+#endif
+  {
+   char tolua_ret = (char)  self->GetMaxStackSize();
+   tolua_pushnumber(tolua_S,(lua_Number)tolua_ret);
+  }
+ }
+ return 1;
+#ifndef TOLUA_RELEASE
+ tolua_lerror:
+ tolua_error(tolua_S,"#ferror in function 'GetMaxStackSize'.",&tolua_err);
+ return 0;
+#endif
+}
+#endif //#ifndef TOLUA_DISABLE
+
 /* get function: m_ItemType of class  cItem */
 #ifndef TOLUA_DISABLE_tolua_get_cItem_m_ItemType
 static int tolua_get_cItem_m_ItemType(lua_State* tolua_S)
@@ -30521,6 +30553,7 @@ TOLUA_API int tolua_AllToLua_open (lua_State* tolua_S)
    tolua_function(tolua_S,"IsDamageable",tolua_AllToLua_cItem_IsDamageable00);
    tolua_function(tolua_S,"IsStackableWith",tolua_AllToLua_cItem_IsStackableWith00);
    tolua_function(tolua_S,"IsFullStack",tolua_AllToLua_cItem_IsFullStack00);
+   tolua_function(tolua_S,"GetMaxStackSize",tolua_AllToLua_cItem_GetMaxStackSize00);
    tolua_variable(tolua_S,"m_ItemType",tolua_get_cItem_m_ItemType,tolua_set_cItem_m_ItemType);
    tolua_variable(tolua_S,"m_ItemCount",tolua_get_cItem_m_ItemCount,tolua_set_cItem_m_ItemCount);
    tolua_variable(tolua_S,"m_ItemDamage",tolua_get_cItem_m_ItemDamage,tolua_set_cItem_m_ItemDamage);
diff --git a/source/Bindings.h b/source/Bindings.h
index b1c0d55cb..c0e1f288c 100644
--- a/source/Bindings.h
+++ b/source/Bindings.h
@@ -1,6 +1,6 @@
 /*
 ** Lua binding: AllToLua
-** Generated automatically by tolua++-1.0.92 on 11/09/13 19:50:08.
+** Generated automatically by tolua++-1.0.92 on 11/10/13 18:40:47.
 */
 
 /* Exported function */
diff --git a/source/Item.cpp b/source/Item.cpp
index 5e0beb028..25664e4df 100644
--- a/source/Item.cpp
+++ b/source/Item.cpp
@@ -122,6 +122,15 @@ bool cItem::IsFullStack(void) const
 
 
 
+char cItem::GetMaxStackSize(void) const
+{
+	return ItemHandler(m_ItemType)->GetMaxStackSize();
+}
+
+
+
+
+
 /// Returns the cItemHandler responsible for this item type
 cItemHandler * cItem::GetHandler(void) const
 {
diff --git a/source/Item.h b/source/Item.h
index fee861050..c60d0542c 100644
--- a/source/Item.h
+++ b/source/Item.h
@@ -132,6 +132,9 @@ public:
 	
 	/// Returns true if the item is stacked up to its maximum stacking.
 	bool IsFullStack(void) const;
+	
+	/// Returns the maximum amount of stacked items of this type.
+	char GetMaxStackSize(void) const;
 
 	// tolua_end
 	
diff --git a/source/Mobs/Sheep.cpp b/source/Mobs/Sheep.cpp
index 703482ddb..bda4ccff8 100644
--- a/source/Mobs/Sheep.cpp
+++ b/source/Mobs/Sheep.cpp
@@ -33,7 +33,6 @@ void cSheep::GetDrops(cItems & a_Drops, cEntity * a_Killer)
 
 
 
-
 void cSheep::OnRightClicked(cPlayer & a_Player)
 {
 	if ((a_Player.GetEquippedItem().m_ItemType == E_ITEM_SHEARS) && (!m_IsSheared))
@@ -51,9 +50,13 @@ void cSheep::OnRightClicked(cPlayer & a_Player)
 		Drops.push_back(cItem(E_BLOCK_WOOL, NumDrops, m_WoolColor));
 		m_World->SpawnItemPickups(Drops, GetPosX(), GetPosY(), GetPosZ(), 10);
 	}
+	if ((a_Player.GetEquippedItem().m_ItemType == E_ITEM_DYE) && (m_WoolColor != 15 - a_Player.GetEquippedItem().m_ItemDamage))
+	{
+		m_WoolColor = 15 - a_Player.GetEquippedItem().m_ItemDamage;
+		if (!a_Player.IsGameModeCreative())
+		{
+			a_Player.GetInventory().RemoveOneEquippedItem();
+		}
+		m_World->BroadcastEntityMetadata(*this);
+	}
 }
-
-
-
-
-
diff --git a/source/Mobs/Wolf.cpp b/source/Mobs/Wolf.cpp
index 2baeb4b7b..b9db53c7f 100644
--- a/source/Mobs/Wolf.cpp
+++ b/source/Mobs/Wolf.cpp
@@ -11,10 +11,12 @@
 
 cWolf::cWolf(void) :
 	super("Wolf", mtWolf, "mob.wolf.hurt", "mob.wolf.death", 0.6, 0.8),
-	m_bIsAngry(false),
-	m_bIsTame(false),
-	m_bIsSitting(false),
-	m_bIsBegging(false)
+	m_IsAngry(false),
+	m_IsTame(false),
+	m_IsSitting(false),
+	m_IsBegging(false),
+	m_Owner(""),
+	m_CollarColor(14)
 {
 }
 
@@ -25,9 +27,9 @@ cWolf::cWolf(void) :
 void cWolf::DoTakeDamage(TakeDamageInfo & a_TDI)
 {
 	super::DoTakeDamage(a_TDI);
-	if (!m_bIsTame)
+	if (!m_IsTame)
 	{
-		m_bIsAngry = true;
+		m_IsAngry = true;
 	}
 	m_World->BroadcastEntityMetadata(*this); // Broadcast health and possibly angry face
 }
@@ -38,7 +40,7 @@ void cWolf::DoTakeDamage(TakeDamageInfo & a_TDI)
 
 void cWolf::OnRightClicked(cPlayer & a_Player)
 {
-	if ((!m_bIsTame) && (!m_bIsAngry))
+	if (!IsTame() && !IsAngry())
 	{
 		if (a_Player.GetEquippedItem().m_ItemType == E_ITEM_BONE)
 		{
@@ -47,10 +49,11 @@ void cWolf::OnRightClicked(cPlayer & a_Player)
 				a_Player.GetInventory().RemoveOneEquippedItem();
 			}
 
-			if (m_World->GetTickRandomNumber(10) == 5)
+			if (m_World->GetTickRandomNumber(7) == 0)
 			{
 				SetMaxHealth(20);
-				m_bIsTame = true;
+				SetIsTame(true);
+				SetOwner(a_Player.GetName());
 				m_World->BroadcastEntityStatus(*this, ENTITY_STATUS_WOLF_TAMED);
 			}
 			else
@@ -59,19 +62,119 @@ void cWolf::OnRightClicked(cPlayer & a_Player)
 			}
 		}
 	}
-	else if (m_bIsTame)
+	else if (IsTame())
 	{
-		if (m_bIsSitting)
+		if (a_Player.GetName() == m_Owner) // Is the player the owner of the dog?
 		{
-			m_bIsSitting = false;
+			if (a_Player.GetEquippedItem().m_ItemType == E_ITEM_DYE)
+			{
+				m_CollarColor = 15 - a_Player.GetEquippedItem().m_ItemDamage;
+				if (!a_Player.IsGameModeCreative())
+				{
+					a_Player.GetInventory().RemoveOneEquippedItem();
+				}
+			} 
+			else if (IsSitting()) 
+			{
+				SetIsSitting(false);
+			}
+			else
+			{
+				SetIsSitting(true);
+			}
 		}
-		else
+	}
+	
+	m_World->BroadcastEntityMetadata(*this);
+}
+
+
+
+
+
+void cWolf::Tick(float a_Dt, cChunk & a_Chunk)
+{
+	if (!IsAngry())
+	{
+		cMonster::Tick(a_Dt, a_Chunk);
+	}
+	else
+	{
+		super::Tick(a_Dt, a_Chunk);
+	}
+
+	if (IsSitting())
+	{
+		m_bMovingToDestination = false;
+	}
+
+	cPlayer * a_Closest_Player = FindClosestPlayer();
+	if (a_Closest_Player != NULL)
+	{
+		switch (a_Closest_Player->GetEquippedItem().m_ItemType)
 		{
-			m_bIsSitting = true;
+			case E_ITEM_BONE:
+			case E_ITEM_RAW_BEEF:
+			case E_ITEM_STEAK:
+			case E_ITEM_RAW_CHICKEN:
+			case E_ITEM_COOKED_CHICKEN:
+			case E_ITEM_ROTTEN_FLESH:
+			{
+				if (!IsBegging())
+				{
+					SetIsBegging(true);
+					m_World->BroadcastEntityMetadata(*this);
+				}
+				Vector3f a_NewDestination = a_Closest_Player->GetPosition();
+				a_NewDestination.y = a_NewDestination.y + 1; // Look at the head of the player, not his feet.
+				m_Destination = Vector3f(a_NewDestination);
+				m_bMovingToDestination = false;
+				break;
+			}
+			default:
+			{
+				if (IsBegging())
+				{
+					SetIsBegging(false);
+					m_World->BroadcastEntityMetadata(*this);
+				}
+			}
 		}
 	}
 	
-	m_World->BroadcastEntityMetadata(*this);
+	class cCallback :
+		public cPlayerListCallback
+	{
+		virtual bool Item(cPlayer * Player) override
+		{
+			OwnerCoords = Player->GetPosition();
+			return false;
+		}
+	public:
+		Vector3f OwnerCoords;
+	} Callback;
+	m_World->DoWithPlayer(m_Owner, Callback);
+	Vector3f OwnerCoords = Callback.OwnerCoords;
+
+	if (IsTame())
+	{
+		if (m_Owner != "")
+		{
+			double Distance = (OwnerCoords - GetPosition()).Length();
+			if (Distance < 3)
+			{
+				m_bMovingToDestination = false;
+			}
+			else if ((Distance > 30) && (!IsSitting()))
+			{
+				TeleportToCoords(OwnerCoords.x, OwnerCoords.y, OwnerCoords.z);
+			}
+			else
+			{
+				m_Destination = OwnerCoords;
+			}
+		}
+	}
 }
 
 
diff --git a/source/Mobs/Wolf.h b/source/Mobs/Wolf.h
index 98074ba11..d51d4e78a 100644
--- a/source/Mobs/Wolf.h
+++ b/source/Mobs/Wolf.h
@@ -2,6 +2,7 @@
 #pragma once
 
 #include "PassiveAggressiveMonster.h"
+#include "../Entities/Entity.h"
 
 
 
@@ -19,19 +20,32 @@ public:
 
 	virtual void DoTakeDamage(TakeDamageInfo & a_TDI) override;
 	virtual void OnRightClicked(cPlayer & a_Player) override;
-
-	bool IsSitting(void) const { return m_bIsSitting; }
-	bool IsTame(void) const { return m_bIsTame; }
-	bool IsBegging(void) const { return m_bIsBegging; }
-	bool IsAngry(void) const { return m_bIsAngry; }
-
-private:
-
-	bool m_bIsSitting;
-	bool m_bIsTame;
-	bool m_bIsBegging;
-	bool m_bIsAngry;
-
+	virtual void Tick(float a_Dt, cChunk & a_Chunk) override;
+
+	// Get functions
+	bool    IsSitting     (void) const { return m_IsSitting; }
+	bool    IsTame        (void) const { return m_IsTame; }
+	bool    IsBegging     (void) const { return m_IsBegging; }
+	bool    IsAngry       (void) const { return m_IsAngry; }
+	AString GetOwner      (void) const { return m_Owner; }
+	int     GetCollarColor(void) const { return m_CollarColor; }
+
+	// Set functions
+	void SetIsSitting  (bool a_IsSitting)   { m_IsSitting = a_IsSitting; }
+	void SetIsTame     (bool a_IsTame)      { m_IsTame = a_IsTame; }
+	void SetIsBegging  (bool a_IsBegging)   { m_IsBegging = a_IsBegging; }
+	void SetIsAngry    (bool a_IsAngry)     { m_IsAngry = a_IsAngry; }
+	void SetOwner      (AString a_NewOwner) { m_Owner = a_NewOwner; }
+	void SetCollarColor(int a_CollarColor)  { m_CollarColor = a_CollarColor; }
+
+protected:
+
+	bool    m_IsSitting;
+	bool    m_IsTame;
+	bool    m_IsBegging;
+	bool    m_IsAngry;
+	AString m_Owner;
+	int     m_CollarColor;
 } ;
 
 
diff --git a/source/Protocol/Protocol17x.cpp b/source/Protocol/Protocol17x.cpp
index 9e230bafd..78a55ccc0 100644
--- a/source/Protocol/Protocol17x.cpp
+++ b/source/Protocol/Protocol17x.cpp
@@ -215,7 +215,7 @@ void cProtocol172::SendDestroyEntity(const cEntity & a_Entity)
 void cProtocol172::SendDisconnect(const AString & a_Reason)
 {
 	cPacketizer Pkt(*this, 0x40);
-	Pkt.WriteString(a_Reason);
+	Pkt.WriteString(EscapeString(a_Reason));
 }
 
 
@@ -490,7 +490,7 @@ void cProtocol172::SendPlayerAbilities(void)
 void cProtocol172::SendPlayerAnimation(const cPlayer & a_Player, char a_Animation)
 {
 	cPacketizer Pkt(*this, 0x0b);  // Animation packet
-	Pkt.WriteInt(a_Player.GetUniqueID());
+	Pkt.WriteVarInt(a_Player.GetUniqueID());
 	Pkt.WriteChar(a_Animation);
 }
 
@@ -503,7 +503,7 @@ void cProtocol172::SendPlayerListItem(const cPlayer & a_Player, bool a_IsOnline)
 	cPacketizer Pkt(*this, 0x38);  // Playerlist Item packet
 	Pkt.WriteString(a_Player.GetName());
 	Pkt.WriteBool(a_IsOnline);
-	Pkt.WriteShort(a_Player.GetClientHandle()->GetPing());
+	Pkt.WriteShort(a_IsOnline ? a_Player.GetClientHandle()->GetPing() : 0);
 }
 
 
@@ -564,7 +564,7 @@ void cProtocol172::SendPlayerSpawn(const cPlayer & a_Player)
 {
 	// Called to spawn another player for the client
 	cPacketizer Pkt(*this, 0x0c);  // Spawn Player packet
-	Pkt.WriteInt(a_Player.GetUniqueID());
+	Pkt.WriteVarInt(a_Player.GetUniqueID());
 	Pkt.WriteString(Printf("%d", a_Player.GetUniqueID()));  // TODO: Proper UUID
 	Pkt.WriteString(a_Player.GetName());
 	Pkt.WriteFPInt(a_Player.GetPosX());
@@ -615,11 +615,9 @@ void cProtocol172::SendSoundParticleEffect(int a_EffectID, int a_SrcX, int a_Src
 {
 	cPacketizer Pkt(*this, 0x28);  // Effect packet
 	Pkt.WriteInt(a_EffectID);
-	Pkt.WriteInt(a_SrcX);
-	// TODO: Check if this is really an int
-	// wiki.vg says it's a byte, but that wouldn't cover the entire range needed (Y location * 8 = 0..2048)
-	Pkt.WriteInt(a_SrcY);
-	Pkt.WriteInt(a_SrcZ);
+	Pkt.WriteInt(a_SrcX / 8);
+	Pkt.WriteByte(a_SrcY / 8);
+	Pkt.WriteInt(a_SrcZ / 8);
 	Pkt.WriteInt(a_Data);
 	Pkt.WriteBool(false);
 }
@@ -1754,6 +1752,8 @@ void cProtocol172::cPacketizer::WriteMobMetadata(const cMonster & a_Mob)
 			WriteFloat((float)(a_Mob.GetHealth()));
 			WriteByte(0x13);
 			WriteByte(Wolf.IsBegging() ? 1 : 0);
+			WriteByte(0x14);
+			WriteByte(Wolf.GetCollarColor());
 			break;
 		}
 		
diff --git a/source/Root.cpp b/source/Root.cpp
index 4760c3ef1..701832be7 100644
--- a/source/Root.cpp
+++ b/source/Root.cpp
@@ -547,9 +547,9 @@ bool cRoot::FindAndDoWithPlayer(const AString & a_PlayerName, cPlayerListCallbac
 			}
 			if (Rating == NameLength) // Perfect match
 			{
-				return false;
+				return true;
 			}
-			return true;
+			return false;
 		}
 
 	public:
diff --git a/source/UI/SlotArea.cpp b/source/UI/SlotArea.cpp
index 82e87e126..ae493762a 100644
--- a/source/UI/SlotArea.cpp
+++ b/source/UI/SlotArea.cpp
@@ -50,15 +50,20 @@ void cSlotArea::Clicked(cPlayer & a_Player, int a_SlotNum, eClickAction a_ClickA
 		return;
 	}
 	
-	if ((a_ClickAction == caShiftLeftClick) || (a_ClickAction == caShiftRightClick))
+	switch (a_ClickAction)
 	{
-		if (!a_Player.IsDraggingItem())
+		case caShiftLeftClick:
+		case caShiftRightClick:
 		{
 			ShiftClicked(a_Player, a_SlotNum, a_ClickedItem);
 			return;
 		}
-		LOGD("Shift clicked, but the player is dragging an item: %s", ItemToFullString(a_Player.GetDraggingItem()).c_str());
-		return;
+		
+		case caDblClick:
+		{
+			DblClicked(a_Player, a_SlotNum);
+			return;
+		}
 	}
 	
 	cItem Slot(*GetSlot(a_SlotNum, a_Player));
@@ -182,6 +187,36 @@ void cSlotArea::ShiftClicked(cPlayer & a_Player, int a_SlotNum, const cItem & a_
 
 
 
+void cSlotArea::DblClicked(cPlayer & a_Player, int a_SlotNum)
+{
+	cItem & Dragging = a_Player.GetDraggingItem();
+	if (Dragging.IsEmpty())
+	{
+		// Move the item in the dblclicked slot into hand:
+		Dragging = *GetSlot(a_SlotNum, a_Player);
+		cItem EmptyItem;
+		SetSlot(a_SlotNum, a_Player, EmptyItem);
+	}
+	if (Dragging.IsEmpty())
+	{
+		LOGD("%s DblClicked with an empty hand over empty slot, ignoring", a_Player.GetName().c_str());
+		return;
+	}
+	
+	// Add as many items from the surrounding area into hand as possible:
+	// First skip full stacks, then if there's still space, process full stacks as well:
+	if (!m_ParentWindow.CollectItemsToHand(Dragging, *this, a_Player, false))
+	{
+		m_ParentWindow.CollectItemsToHand(Dragging, *this, a_Player, true);
+	}
+	
+	m_ParentWindow.BroadcastWholeWindow();  // We need to broadcast, in case the window was a chest opened by multiple players
+}
+
+
+
+
+
 void cSlotArea::DistributeStack(cItem & a_ItemStack, cPlayer & a_Player, bool a_Apply, bool a_KeepEmptySlots)
 {
 	for (int i = 0; i < m_NumSlots; i++)
@@ -220,6 +255,39 @@ void cSlotArea::DistributeStack(cItem & a_ItemStack, cPlayer & a_Player, bool a_
 
 
 
+bool cSlotArea::CollectItemsToHand(cItem & a_Dragging, cPlayer & a_Player, bool a_CollectFullStacks)
+{
+	int NumSlots = GetNumSlots();
+	for (int i = 0; i < NumSlots; i++)
+	{
+		const cItem & SlotItem = *GetSlot(i, a_Player);
+		if (!SlotItem.IsStackableWith(a_Dragging))
+		{
+			continue;
+		}
+		int ToMove = a_Dragging.GetMaxStackSize() - a_Dragging.m_ItemCount;
+		if (ToMove > SlotItem.m_ItemCount)
+		{
+			ToMove = SlotItem.m_ItemCount;
+		}
+		a_Dragging.m_ItemCount += ToMove;
+		cItem NewSlot(SlotItem);
+		NewSlot.m_ItemCount -= ToMove;
+		SetSlot(i, a_Player, NewSlot);
+		if (!NewSlot.IsEmpty())
+		{
+			// There are leftovers in the slot, so a_Dragging must be full
+			return true;
+		}
+	}  // for i - Slots[]
+	// a_Dragging may be full if there were exactly the number of items needed to fill it
+	return a_Dragging.IsFullStack();
+}
+
+
+
+
+
 ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 // cSlotAreaChest:
 
diff --git a/source/UI/SlotArea.h b/source/UI/SlotArea.h
index 943452feb..4964e9986 100644
--- a/source/UI/SlotArea.h
+++ b/source/UI/SlotArea.h
@@ -40,9 +40,12 @@ public:
 	/// Called when a player clicks in the window. Parameters taken from the click packet.
 	virtual void Clicked(cPlayer & a_Player, int a_SlotNum, eClickAction a_ClickAction, const cItem & a_ClickedItem);
 	
-	/// Called from Clicked if it is a valid shiftclick
+	/// Called from Clicked when the action is a shiftclick (left or right)
 	virtual void ShiftClicked(cPlayer & a_Player, int a_SlotNum, const cItem & a_ClickedItem);
 	
+	/// Called from Clicked when the action is a caDblClick
+	virtual void DblClicked(cPlayer & a_Player, int a_SlotNum);
+	
 	/// Called when a new player opens the same parent window. The window already tracks the player. CS-locked.
 	virtual void OnPlayerAdded(cPlayer & a_Player) {} ;
 	
@@ -57,6 +60,12 @@ public:
 	*/
 	virtual void DistributeStack(cItem & a_ItemStack, cPlayer & a_Player, bool a_ShouldApply, bool a_KeepEmptySlots);
 	
+	/// Called on DblClicking to collect all stackable items into hand.
+	/// The items are accumulated in a_Dragging and removed from the slots immediately.
+	/// If a_CollectFullStacks is false, slots with full stacks are skipped while collecting.
+	/// Returns true if full stack has been collected in a_Dragging, false if there's space remaining to fill.
+	virtual bool CollectItemsToHand(cItem & a_Dragging, cPlayer & a_Player, bool a_CollectFullStacks);
+	
 protected:
 	int       m_NumSlots;
 	cWindow & m_ParentWindow;
diff --git a/source/UI/Window.cpp b/source/UI/Window.cpp
index 1f023cb03..a09f5d682 100644
--- a/source/UI/Window.cpp
+++ b/source/UI/Window.cpp
@@ -386,6 +386,51 @@ void cWindow::DistributeStack(cItem & a_ItemStack, cPlayer & a_Player, cSlotArea
 
 
 
+bool cWindow::CollectItemsToHand(cItem & a_Dragging, cSlotArea & a_Area, cPlayer & a_Player, bool a_CollectFullStacks)
+{
+	// First ask the slot areas from a_Area till the end of list:
+	bool ShouldCollect = false;
+	for (cSlotAreas::iterator itr = m_SlotAreas.begin(), end = m_SlotAreas.end(); itr != end; ++itr)
+	{
+		if (&a_Area == *itr)
+		{
+			ShouldCollect = true;
+		}
+		if (!ShouldCollect)
+		{
+			continue;
+		}
+		if ((*itr)->CollectItemsToHand(a_Dragging, a_Player, a_CollectFullStacks))
+		{
+			// a_Dragging is full
+			return true;
+		}
+	}
+	
+	// a_Dragging still not full, ask slot areas before a_Area in the list:
+	for (cSlotAreas::iterator itr = m_SlotAreas.begin(), end = m_SlotAreas.end(); itr != end; ++itr)
+	{
+		if (*itr == &a_Area)
+		{
+			// All areas processed
+			return false;
+		}
+		if ((*itr)->CollectItemsToHand(a_Dragging, a_Player, a_CollectFullStacks))
+		{
+			// a_Dragging is full
+			return true;
+		}
+	}
+	// Shouldn't reach here
+	// a_Area is expected to be part of m_SlotAreas[], so the "return false" in the loop above should have returned already
+	ASSERT(!"This branch should not be reached");
+	return false;
+}
+
+
+
+
+
 void cWindow::SendSlot(cPlayer & a_Player, cSlotArea * a_SlotArea, int a_RelativeSlotNum)
 {
 	int SlotBase = 0;
diff --git a/source/UI/Window.h b/source/UI/Window.h
index 6927cd3ac..c44b900d7 100644
--- a/source/UI/Window.h
+++ b/source/UI/Window.h
@@ -156,6 +156,12 @@ public:
 	*/
 	void DistributeStack(cItem & a_ItemStack, cPlayer & a_Player, cSlotArea * a_ExcludeArea, bool a_ShouldApply);
 	
+	/// Called on DblClicking to collect all stackable items from all areas into hand, starting with the specified area.
+	/// The items are accumulated in a_Dragging and removed from the SlotAreas immediately.
+	/// If a_CollectFullStacks is false, slots with full stacks in the area are skipped while collecting.
+	/// Returns true if full stack has been collected, false if there's space remaining to fill.
+	bool CollectItemsToHand(cItem & a_Dragging, cSlotArea & a_Area, cPlayer & a_Player, bool a_CollectFullStacks);
+	
 	/// Used by cSlotAreas to send individual slots to clients, a_RelativeSlotNum is the slot number relative to a_SlotArea
 	void SendSlot(cPlayer & a_Player, cSlotArea * a_SlotArea, int a_RelativeSlotNum);