13 files changed, 195 insertions, 29 deletions

diff --git a/src/ClientHandle.cpp b/src/ClientHandle.cpp
index ff8775771..a2cbaefff 100644
--- a/src/ClientHandle.cpp
+++ b/src/ClientHandle.cpp
@@ -1199,8 +1199,6 @@ void cClientHandle::HandleSlotSelected(short a_SlotNum)
 
 		if (Map != NULL)
 		{
-			Map->UpdateRadius(*m_Player, 128); // Temporary
-
 			// TODO 2014-02-14 xdot: Optimization - Do not send the whole map.
 			Map->SendTo(*this);
 		}
diff --git a/src/Entities/Player.cpp b/src/Entities/Player.cpp
index 286d43cf6..fdf8d4303 100644
--- a/src/Entities/Player.cpp
+++ b/src/Entities/Player.cpp
@@ -254,6 +254,9 @@ void cPlayer::Tick(float a_Dt, cChunk & a_Chunk)
 		HandleFloater();
 	}
 
+	// Update items (e.g. Maps)
+	m_Inventory.UpdateItems();
+
 	// Send Player List (Once per m_LastPlayerListTime/1000 ms)
 	cTimer t1;
 	if (m_LastPlayerListTime + cPlayer::PLAYER_LIST_TIME_MS <= t1.GetNowTime())
diff --git a/src/Inventory.cpp b/src/Inventory.cpp
index 0e1cedc85..7f434adfd 100644
--- a/src/Inventory.cpp
+++ b/src/Inventory.cpp
@@ -515,6 +515,31 @@ bool cInventory::AddToBar( cItem & a_Item, const int a_Offset, const int a_Size,
 
 
 
+void cInventory::UpdateItems(void)
+{
+	const cItem & Slot = GetEquippedItem();
+
+	if (Slot.IsEmpty())
+	{
+		return;
+	}
+
+	switch (Slot.m_ItemType)
+	{
+		case E_ITEM_MAP:
+		{
+			ItemHandler(Slot.m_ItemType)->OnUpdate(m_Owner.GetWorld(), &m_Owner, Slot);
+			break;
+		}
+
+		default: break;
+	}
+}
+
+
+
+
+
 void cInventory::SaveToJson(Json::Value & a_Value)
 {
 	// The JSON originally included the 4 crafting slots and the result, so we have to put empty items there, too:
diff --git a/src/Inventory.h b/src/Inventory.h
index 3c6a19de8..fd2089a13 100644
--- a/src/Inventory.h
+++ b/src/Inventory.h
@@ -150,6 +150,9 @@ public:
 	/// Sends the slot contents to the owner
 	void SendSlot(int a_SlotNum);
 
+	/// Update items (e.g. Maps)
+	void UpdateItems(void);
+
 	/// Converts an armor slot number into the ID for the EntityEquipment packet
 	static int ArmorSlotNumToEntityEquipmentID(short a_ArmorSlotNum);
 
diff --git a/src/Items/ItemEmptyMap.h b/src/Items/ItemEmptyMap.h
index 24d31151b..b06cf9d13 100644
--- a/src/Items/ItemEmptyMap.h
+++ b/src/Items/ItemEmptyMap.h
@@ -41,7 +41,21 @@ public:
 		int CenterX = round(a_Player->GetPosX() / (float) RegionWidth) * RegionWidth;
 		int CenterZ = round(a_Player->GetPosZ() / (float) RegionWidth) * RegionWidth;
 
-		a_World->CreateMap(CenterX, CenterZ, DEFAULT_SCALE);
+		cMap * NewMap = a_World->CreateMap(CenterX, CenterZ, DEFAULT_SCALE);
+
+		// Remove empty map from inventory
+		if (!a_Player->GetInventory().RemoveOneEquippedItem())
+		{
+			ASSERT(!"Inventory mismatch");
+			return true;
+		}
+
+		if (NewMap == NULL)
+		{
+			return true;
+		}
+
+		a_Player->GetInventory().AddItem(cItem(E_ITEM_MAP, 1, NewMap->GetID()), true, true);
 
 		return true;
 	}
diff --git a/src/Items/ItemHandler.cpp b/src/Items/ItemHandler.cpp
index 755766d64..cab8dec97 100644
--- a/src/Items/ItemHandler.cpp
+++ b/src/Items/ItemHandler.cpp
@@ -25,6 +25,7 @@
 #include "ItemHoe.h"
 #include "ItemLeaves.h"
 #include "ItemLighter.h"
+#include "ItemMap.h"
 #include "ItemMinecart.h"
 #include "ItemNetherWart.h"
 #include "ItemPickaxe.h"
@@ -107,6 +108,7 @@ cItemHandler *cItemHandler::CreateItemHandler(int a_ItemType)
 		case E_ITEM_FISHING_ROD:       return new cItemFishingRodHandler(a_ItemType);
 		case E_ITEM_FLINT_AND_STEEL:   return new cItemLighterHandler(a_ItemType);
 		case E_ITEM_FLOWER_POT:        return new cItemFlowerPotHandler(a_ItemType);
+		case E_ITEM_MAP:               return new cItemMapHandler();
 		case E_ITEM_NETHER_WART:       return new cItemNetherWartHandler(a_ItemType);
 		case E_ITEM_REDSTONE_DUST:     return new cItemRedstoneDustHandler(a_ItemType);
 		case E_ITEM_REDSTONE_REPEATER: return new cItemRedstoneRepeaterHandler(a_ItemType);
diff --git a/src/Items/ItemHandler.h b/src/Items/ItemHandler.h
index 1a6bb044f..ef3f37a7a 100644
--- a/src/Items/ItemHandler.h
+++ b/src/Items/ItemHandler.h
@@ -32,6 +32,14 @@ public:
 		UNUSED(a_BlockZ);
 		UNUSED(a_BlockFace);
 	}
+
+	/// Called every tick while the item is on the player's inventory (Used by maps) - For now, called only for equipped items
+	virtual void OnUpdate(cWorld * a_World, cPlayer * a_Player, const cItem & a_Item)
+	{
+		UNUSED(a_World);
+		UNUSED(a_Player);
+		UNUSED(a_Item);
+	}
 	
 	/// Called while the player diggs a block using this item
 	virtual bool OnDiggingBlock(cWorld * a_World, cPlayer * a_Player, const cItem & a_HeldItem, int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_BlockFace);
diff --git a/src/Items/ItemMap.h b/src/Items/ItemMap.h
new file mode 100644
index 000000000..c3e605547
--- /dev/null
+++ b/src/Items/ItemMap.h
@@ -0,0 +1,43 @@
+
+// ItemMap.h
+
+
+
+
+
+#pragma once
+
+#include "../Entities/Entity.h"
+#include "../Item.h"
+
+
+
+
+
+class cItemMapHandler :
+	public cItemHandler
+{
+	typedef cItemHandler super;
+
+	static const unsigned int DEFAULT_RADIUS = 128;
+	
+public:
+	cItemMapHandler() :
+		super(E_ITEM_MAP)
+	{
+	}
+
+	virtual void OnUpdate(cWorld * a_World, cPlayer * a_Player, const cItem & a_Item)
+	{
+		cMap * Map = a_World->GetMapData(a_Item.m_ItemDamage);
+
+		if (Map == NULL)
+		{
+			return;
+		}
+
+		// Map->AddTrackedPlayer(a_Player);
+
+		Map->UpdateRadius(*a_Player, DEFAULT_RADIUS);
+	}
+} ;
diff --git a/src/Map.cpp b/src/Map.cpp
index e0f991693..e85c23d3a 100644
--- a/src/Map.cpp
+++ b/src/Map.cpp
@@ -50,15 +50,25 @@ cMap::cMap(unsigned int a_ID, int a_CenterX, int a_CenterZ, cWorld * a_World, un
 
 
 
+template <typename T>
+T Clamp(T a_X, T a_Min, T a_Max)
+{
+	return std::min(std::max(a_X, a_Min), a_Max);
+}
+
+
+
+
+
 void cMap::UpdateRadius(int a_PixelX, int a_PixelZ, unsigned int a_Radius)
 {
 	int PixelRadius = a_Radius / GetPixelWidth();
 
-	unsigned int StartX = std::max(a_PixelX - PixelRadius, 0);
-	unsigned int StartZ = std::max(a_PixelZ - PixelRadius, 0);
+	unsigned int StartX = Clamp(a_PixelX - PixelRadius, 0, (int)m_Width);
+	unsigned int StartZ = Clamp(a_PixelZ - PixelRadius, 0, (int)m_Height);
 
-	unsigned int EndX = std::min(a_PixelX + PixelRadius, (int)m_Width);
-	unsigned int EndZ = std::min(a_PixelZ + PixelRadius, (int)m_Height);
+	unsigned int EndX   = Clamp(a_PixelX + PixelRadius, 0, (int)m_Width);
+	unsigned int EndZ   = Clamp(a_PixelZ + PixelRadius, 0, (int)m_Height);
 
 	for (unsigned int X = StartX; X < EndX; ++X)
 	{
@@ -93,11 +103,9 @@ void cMap::UpdateRadius(cPlayer & a_Player, unsigned int a_Radius)
 
 
 
-bool cMap::UpdatePixel(unsigned int a_X, unsigned int a_Y)
+bool cMap::UpdatePixel(unsigned int a_X, unsigned int a_Z)
 {
-	ASSERT(m_World != NULL);
-
-	unsigned int PixelWidth = GetPixelWidth();
+	/*unsigned int PixelWidth = GetPixelWidth();
 
 	int BlockX = m_CenterX + ((a_X - m_Width)  * PixelWidth);
 	int BlockZ = m_CenterZ + ((a_Y - m_Height) * PixelWidth);
@@ -119,7 +127,7 @@ bool cMap::UpdatePixel(unsigned int a_X, unsigned int a_Y)
 
 	public:
 		cCalculatePixelCb(cMap * a_Map, int a_RelX, int a_RelZ)
-			: m_Map(a_Map), m_RelX(a_RelX), m_RelZ(a_RelZ), m_PixelData(0) {}
+			: m_Map(a_Map), m_RelX(a_RelX), m_RelZ(a_RelZ), m_PixelData(4) {}
 
 		virtual bool Item(cChunk * a_Chunk) override
 		{
@@ -155,9 +163,9 @@ bool cMap::UpdatePixel(unsigned int a_X, unsigned int a_Y)
 	} CalculatePixelCb(this, RelX, RelZ);
 
 	ASSERT(m_World != NULL);
-	m_World->DoWithChunk(ChunkX, ChunkZ, CalculatePixelCb);
+	m_World->DoWithChunk(ChunkX, ChunkZ, CalculatePixelCb);*/
 
-	m_Data[a_Y + (a_X * m_Height)] = CalculatePixelCb.GetPixelData();
+	m_Data[a_Z + (a_X * m_Height)] = 4;
 
 	return true;
 }
@@ -166,6 +174,39 @@ bool cMap::UpdatePixel(unsigned int a_X, unsigned int a_Y)
 
 
 
+void cMap::UpdateTrackedPlayers(void)
+{
+	cTrackedPlayerList NewList;
+
+	for (cTrackedPlayerList::iterator it = m_TrackedPlayers.begin(); it != m_TrackedPlayers.end(); ++it)
+	{
+		cPlayer * Player = *it;
+
+		UpdateRadius(*Player, DEFAULT_RADIUS);
+
+		if (true)
+		{
+			NewList.insert(Player);
+		}
+	}
+
+	std::swap(m_TrackedPlayers, NewList);
+}
+
+
+
+
+
+void cMap::AddTrackedPlayer(cPlayer * a_Player)
+{
+	ASSERT(a_Player != NULL);
+	m_TrackedPlayers.insert(a_Player);
+}
+
+
+
+
+
 void cMap::EraseData(void)
 {
 	m_Data.assign(m_Width * m_Height, 0);
diff --git a/src/Map.h b/src/Map.h
index 4134d53a1..805dfb845 100644
--- a/src/Map.h
+++ b/src/Map.h
@@ -38,6 +38,8 @@ public:
 
 	typedef std::vector<ColorID> cColorList;
 
+	static const unsigned int DEFAULT_RADIUS = 128;
+
 
 public:
 
@@ -54,6 +56,10 @@ public:
 
 	void UpdateRadius(cPlayer & a_Player, unsigned int a_Radius);
 
+	void UpdateTrackedPlayers(void);
+
+	void AddTrackedPlayer(cPlayer * a_Player);
+
 	// tolua_begin
 
 	/** Erase pixel data */
@@ -93,7 +99,7 @@ public:
 private:
 
 	/** Update the specified pixel. */
-	bool UpdatePixel(unsigned int a_X, unsigned int a_Y);
+	bool UpdatePixel(unsigned int a_X, unsigned int a_Z);
 
 	unsigned int m_ID;
 
@@ -111,8 +117,9 @@ private:
 
 	cWorld * m_World;
 
-	//typedef std::vector<cPlayer*> cPlayerList;
-	//cPlayerList m_TrackedPlayers;
+	typedef std::set<cPlayer*> cTrackedPlayerList;
+
+	cTrackedPlayerList m_TrackedPlayers;
 
 	AString m_Name;
 
diff --git a/src/World.cpp b/src/World.cpp
index 2a3e53332..55c6fbb7a 100644
--- a/src/World.cpp
+++ b/src/World.cpp
@@ -1574,8 +1574,7 @@ cMap * cWorld::CreateMap(int a_CenterX, int a_CenterY, int a_Scale)
 {
 	if (m_MapData.size() >= 65536)
 	{
-		LOGD("cWorld::CreateMap - Too many maps in use");
-
+		LOGWARN("Could not craft map - Too many maps in use");
 		return NULL;
 	}
 
@@ -2992,9 +2991,12 @@ void cWorld::LoadMapData(void)
 {
 	cIDCountSerializer IDSerializer(GetName());
 
-	IDSerializer.Load();
+	if (!IDSerializer.Load())
+	{
+		return;
+	}
 
-	unsigned int MapCount = IDSerializer.GetMapCount() + 1;
+	unsigned int MapCount = IDSerializer.GetMapCount();
 
 	m_MapData.clear();
 
@@ -3004,7 +3006,10 @@ void cWorld::LoadMapData(void)
 
 		cMapSerializer Serializer(GetName(), &Map);
 
-		Serializer.Load();
+		if (!Serializer.Load())
+		{
+			LOGWARN("Could not load map #%i", Map.GetID());
+		}
 
 		m_MapData.push_back(Map);
 	}
@@ -3023,9 +3028,13 @@ void cWorld::SaveMapData(void)
 
 	cIDCountSerializer IDSerializer(GetName());
 
-	IDSerializer.SetMapCount(m_MapData.size() - 1);
+	IDSerializer.SetMapCount(m_MapData.size());
 
-	IDSerializer.Save();
+	if (!IDSerializer.Save())
+	{
+		LOGERROR("Could not save idcounts.dat");
+		return;
+	}
 
 	for (cMapList::iterator it = m_MapData.begin(); it != m_MapData.end(); ++it)
 	{
@@ -3033,7 +3042,10 @@ void cWorld::SaveMapData(void)
 
 		cMapSerializer Serializer(GetName(), &Map);
 
-		Serializer.Save();
+		if (!Serializer.Save())
+		{
+			LOGWARN("Could not save map #%i", Map.GetID());
+		}
 	}
 }
 
diff --git a/src/WorldStorage/MapSerializer.cpp b/src/WorldStorage/MapSerializer.cpp
index 6dab19d4f..0bbe71a60 100644
--- a/src/WorldStorage/MapSerializer.cpp
+++ b/src/WorldStorage/MapSerializer.cpp
@@ -223,7 +223,11 @@ bool cIDCountSerializer::Load(void)
 	int CurrLine = NBT.FindChildByName(0, "map");
 	if (CurrLine >= 0)
 	{
-		m_MapCount = (int)NBT.GetShort(CurrLine);
+		m_MapCount = (int)NBT.GetShort(CurrLine) + 1;
+	}
+	else
+	{
+		m_MapCount = 0;
 	}
 
 	return true;
@@ -237,7 +241,10 @@ bool cIDCountSerializer::Save(void)
 {
 	cFastNBTWriter Writer;
 
-	Writer.AddShort("map", m_MapCount);
+	if (m_MapCount > 0)
+	{
+		Writer.AddShort("map", m_MapCount - 1);
+	}
 
 	Writer.Finish();
 	
diff --git a/src/WorldStorage/MapSerializer.h b/src/WorldStorage/MapSerializer.h
index d9da107bc..296cc92c8 100644
--- a/src/WorldStorage/MapSerializer.h
+++ b/src/WorldStorage/MapSerializer.h
@@ -27,10 +27,10 @@ public:
 
 	cMapSerializer(const AString& a_WorldName, cMap * a_Map);
 
-	/// Try to load the scoreboard
+	/** Try to load the scoreboard */
 	bool Load(void);
 
-	/// Try to save the scoreboard
+	/** Try to save the scoreboard */
 	bool Save(void);
 
 
@@ -56,8 +56,10 @@ public:
 
 	cIDCountSerializer(const AString & a_WorldName);
 
+	/** Try to load the ID counts */
 	bool Load(void);
 
+	/** Try to save the ID counts */
 	bool Save(void);
 
 	inline unsigned int GetMapCount(void) const { return m_MapCount; }
@@ -70,6 +72,7 @@ private:
 	AString m_Path;
 
 	unsigned int m_MapCount;
+
 };