1 files changed, 39 insertions, 27 deletions

diff --git a/src/Chunk.h b/src/Chunk.h
index 2523f2e5c..c5e252114 100644
--- a/src/Chunk.h
+++ b/src/Chunk.h
@@ -1,4 +1,4 @@
-
+
 #pragma once
 
 #include "Entities/Entity.h"
@@ -37,7 +37,18 @@ class cMobCensus;
 class cMobSpawner;
 class cSetChunkData;
 
-typedef std::list<cClientHandle *>                cClientHandleList;
+typedef std::list<cClientHandle *>         cClientHandleList;
+typedef cItemCallback<cEntity>             cEntityCallback;
+typedef cItemCallback<cBeaconEntity>       cBeaconCallback;
+typedef cItemCallback<cBedEntity>          cBedCallback;
+typedef cItemCallback<cBrewingstandEntity> cBrewingstandCallback;
+typedef cItemCallback<cChestEntity>        cChestCallback;
+typedef cItemCallback<cDispenserEntity>    cDispenserCallback;
+typedef cItemCallback<cFurnaceEntity>      cFurnaceCallback;
+typedef cItemCallback<cNoteEntity>         cNoteBlockCallback;
+typedef cItemCallback<cCommandBlockEntity> cCommandBlockCallback;
+typedef cItemCallback<cMobHeadEntity>      cMobHeadCallback;
+typedef cItemCallback<cFlowerPotEntity>    cFlowerPotCallback;
 
 // A convenience macro for calling GetChunkAndRelByAbsolute.
 #define PREPARE_REL_AND_CHUNK(Position, OriginalChunk) cChunk * Chunk; Vector3i Rel; bool RelSuccess = (OriginalChunk).GetChunkAndRelByAbsolute(Position, &Chunk, Rel);
@@ -247,86 +258,87 @@ public:
 	bool HasEntity(UInt32 a_EntityID);
 
 	/** Calls the callback for each entity; returns true if all entities processed, false if the callback aborted by returning true */
-	bool ForEachEntity(const cEntityCallback & a_Callback);  // Lua-accessible
+	bool ForEachEntity(cEntityCallback & a_Callback);  // Lua-accessible
 
 	/** Calls the callback for each entity that has a nonempty intersection with the specified boundingbox.
 	Returns true if all entities processed, false if the callback aborted by returning true. */
-	bool ForEachEntityInBox(const cBoundingBox & a_Box, const cEntityCallback & a_Callback);  // Lua-accessible
+	bool ForEachEntityInBox(const cBoundingBox & a_Box, cEntityCallback & a_Callback);  // Lua-accessible
 
 	/** Calls the callback if the entity with the specified ID is found, with the entity object as the callback param. Returns true if entity found. */
-	bool DoWithEntityByID(UInt32 a_EntityID, const cEntityCallback & a_Callback, bool & a_CallbackResult);  // Lua-accessible
+	bool DoWithEntityByID(UInt32 a_EntityID, cEntityCallback & a_Callback, bool & a_CallbackResult);  // Lua-accessible
+	bool DoWithEntityByID(UInt32 a_EntityID, cLambdaEntityCallback a_Callback, bool & a_CallbackResult);  // Lambda version
 
 	/** Calls the callback for each tyEntity; returns true if all block entities processed, false if the callback aborted by returning true
 	tBlocktypes are all blocktypes convertible to tyEntity which are to be called. If no block type is given the callback is called for every block entity
 	Accessible only from within Chunk.cpp */
 	template <class tyEntity, BLOCKTYPE... tBlocktype>
-	bool GenericForEachBlockEntity(const std::function<bool(tyEntity &)> & a_Callback);
+	bool GenericForEachBlockEntity(cItemCallback<tyEntity>& a_Callback);
 
 	/** Calls the callback for each block entity; returns true if all block entities processed, false if the callback aborted by returning true */
-	bool ForEachBlockEntity(const cBlockEntityCallback & a_Callback);  // Lua-accessible
+	bool ForEachBlockEntity(cBlockEntityCallback & a_Callback);  // Lua-accessible
 
 	/** Calls the callback for each brewingstand; returns true if all brewingstands processed, false if the callback aborted by returning true */
-	bool ForEachBrewingstand(const cBrewingstandCallback & a_Callback);  // Lua-accessible
+	bool ForEachBrewingstand(cBrewingstandCallback & a_Callback);  // Lua-accessible
 
 	/** Calls the callback for each chest; returns true if all chests processed, false if the callback aborted by returning true */
-	bool ForEachChest(const cChestCallback & a_Callback);  // Lua-accessible
+	bool ForEachChest(cChestCallback & a_Callback);  // Lua-accessible
 
 	/** Calls the callback for each dispenser; returns true if all dispensers processed, false if the callback aborted by returning true */
-	bool ForEachDispenser(const cDispenserCallback & a_Callback);
+	bool ForEachDispenser(cDispenserCallback & a_Callback);
 
 	/** Calls the callback for each dropper; returns true if all droppers processed, false if the callback aborted by returning true */
-	bool ForEachDropper(const cDropperCallback & a_Callback);
+	bool ForEachDropper(cDropperCallback & a_Callback);
 
 	/** Calls the callback for each dropspenser; returns true if all dropspensers processed, false if the callback aborted by returning true */
-	bool ForEachDropSpenser(const cDropSpenserCallback & a_Callback);
+	bool ForEachDropSpenser(cDropSpenserCallback & a_Callback);
 
 	/** Calls the callback for each furnace; returns true if all furnaces processed, false if the callback aborted by returning true */
-	bool ForEachFurnace(const cFurnaceCallback & a_Callback);  // Lua-accessible
+	bool ForEachFurnace(cFurnaceCallback & a_Callback);  // Lua-accessible
 
 	/** Calls the callback for the tyEntity at the specified coords; returns false if there's no such block entity at those coords, true if found
 	tBlocktype is a list of the blocktypes to be called. If no BLOCKTYPE template arguments are given the callback is called for any block entity
 	Accessible only from within Chunk.cpp */
 	template <class tyEntity, BLOCKTYPE... tBlocktype>
-	bool GenericDoWithBlockEntityAt(int a_BlockX, int a_BlockY, int a_BlockZ, const std::function<bool(tyEntity &)> & a_Callback);
+	bool GenericDoWithBlockEntityAt(int a_BlockX, int a_BlockY, int a_BlockZ, cItemCallback<tyEntity>& a_Callback);
 
 	/** Calls the callback for the block entity at the specified coords; returns false if there's no block entity at those coords, true if found */
-	bool DoWithBlockEntityAt(int a_BlockX, int a_BlockY, int a_BlockZ, const cBlockEntityCallback & a_Callback);  // Lua-acessible
+	bool DoWithBlockEntityAt(int a_BlockX, int a_BlockY, int a_BlockZ, cBlockEntityCallback & a_Callback);  // Lua-acessible
 
 	/** Calls the callback for the beacon at the specified coords; returns false if there's no beacon at those coords, true if found */
-	bool DoWithBeaconAt(int a_BlockX, int a_BlockY, int a_BlockZ, const cBeaconCallback & a_Callback);  // Lua-acessible
+	bool DoWithBeaconAt(int a_BlockX, int a_BlockY, int a_BlockZ, cBeaconCallback & a_Callback);  // Lua-acessible
 
 	/** Calls the callback for the brewingstand at the specified coords; returns false if there's no brewingstand at those coords, true if found */
-	bool DoWithBrewingstandAt(int a_BlockX, int a_BlockY, int a_BlockZ, const cBrewingstandCallback & a_Callback);  // Lua-acessible
+	bool DoWithBrewingstandAt(int a_BlockX, int a_BlockY, int a_BlockZ, cBrewingstandCallback & a_Callback);  // Lua-acessible
 
 	/** Calls the callback for the bed at the specified coords; returns false if there's no bed at those coords, true if found */
-	bool DoWithBedAt(int a_BlockX, int a_BlockY, int a_BlockZ, const cBedCallback & a_Callback);  // Lua-acessible
+	bool DoWithBedAt(int a_BlockX, int a_BlockY, int a_BlockZ, cBedCallback & a_Callback);  // Lua-acessible
 
 	/** Calls the callback for the chest at the specified coords; returns false if there's no chest at those coords, true if found */
-	bool DoWithChestAt(int a_BlockX, int a_BlockY, int a_BlockZ, const cChestCallback & a_Callback);  // Lua-acessible
+	bool DoWithChestAt(int a_BlockX, int a_BlockY, int a_BlockZ, cChestCallback & a_Callback);  // Lua-acessible
 
 	/** Calls the callback for the dispenser at the specified coords; returns false if there's no dispenser at those coords or callback returns true, returns true if found */
-	bool DoWithDispenserAt(int a_BlockX, int a_BlockY, int a_BlockZ, const cDispenserCallback & a_Callback);
+	bool DoWithDispenserAt(int a_BlockX, int a_BlockY, int a_BlockZ, cDispenserCallback & a_Callback);
 
 	/** Calls the callback for the dispenser at the specified coords; returns false if there's no dropper at those coords or callback returns true, returns true if found */
-	bool DoWithDropperAt(int a_BlockX, int a_BlockY, int a_BlockZ, const cDropperCallback & a_Callback);
+	bool DoWithDropperAt(int a_BlockX, int a_BlockY, int a_BlockZ, cDropperCallback & a_Callback);
 
 	/** Calls the callback for the dispenser at the specified coords; returns false if there's no dropspenser at those coords or callback returns true, returns true if found */
-	bool DoWithDropSpenserAt(int a_BlockX, int a_BlockY, int a_BlockZ, const cDropSpenserCallback & a_Callback);
+	bool DoWithDropSpenserAt(int a_BlockX, int a_BlockY, int a_BlockZ, cDropSpenserCallback & a_Callback);
 
 	/** Calls the callback for the furnace at the specified coords; returns false if there's no furnace at those coords or callback returns true, returns true if found */
-	bool DoWithFurnaceAt(int a_BlockX, int a_BlockY, int a_BlockZ, const cFurnaceCallback & a_Callback);  // Lua-accessible
+	bool DoWithFurnaceAt(int a_BlockX, int a_BlockY, int a_BlockZ, cFurnaceCallback & a_Callback);  // Lua-accessible
 
 	/** Calls the callback for the noteblock at the specified coords; returns false if there's no noteblock at those coords or callback returns true, returns true if found */
-	bool DoWithNoteBlockAt(int a_BlockX, int a_BlockY, int a_BlockZ, const cNoteBlockCallback & a_Callback);
+	bool DoWithNoteBlockAt(int a_BlockX, int a_BlockY, int a_BlockZ, cNoteBlockCallback & a_Callback);
 
 	/** Calls the callback for the command block at the specified coords; returns false if there's no command block at those coords or callback returns true, returns true if found */
-	bool DoWithCommandBlockAt(int a_BlockX, int a_BlockY, int a_BlockZ, const cCommandBlockCallback & a_Callback);
+	bool DoWithCommandBlockAt(int a_BlockX, int a_BlockY, int a_BlockZ, cCommandBlockCallback & a_Callback);
 
 	/** Calls the callback for the mob head block at the specified coords; returns false if there's no mob head block at those coords or callback returns true, returns true if found */
-	bool DoWithMobHeadAt(int a_BlockX, int a_BlockY, int a_BlockZ, const cMobHeadCallback & a_Callback);
+	bool DoWithMobHeadAt(int a_BlockX, int a_BlockY, int a_BlockZ, cMobHeadCallback & a_Callback);
 
 	/** Calls the callback for the flower pot at the specified coords; returns false if there's no flower pot at those coords or callback returns true, returns true if found */
-	bool DoWithFlowerPotAt(int a_BlockX, int a_BlockY, int a_BlockZ, const cFlowerPotCallback & a_Callback);
+	bool DoWithFlowerPotAt(int a_BlockX, int a_BlockY, int a_BlockZ, cFlowerPotCallback & a_Callback);
 
 	/** Retrieves the test on the sign at the specified coords; returns false if there's no sign at those coords, true if found */
 	bool GetSignLines (int a_BlockX, int a_BlockY, int a_BlockZ, AString & a_Line1, AString & a_Line2, AString & a_Line3, AString & a_Line4);  // Lua-accessible