3 files changed, 311 insertions, 11 deletions
diff --git a/src/BlockEntities/BlockEntity.cpp b/src/BlockEntities/BlockEntity.cpp
index 5d7e4a37a..97b5c1a66 100644
--- a/src/BlockEntities/BlockEntity.cpp
+++ b/src/BlockEntities/BlockEntity.cpp
@@ -6,6 +6,7 @@
 #include "Globals.h"
 #include "BlockEntity.h"
 #include "ChestEntity.h"
+#include "CommandBlockEntity.h"
 #include "DispenserEntity.h"
 #include "DropperEntity.h"
 #include "EnderChestEntity.h"
@@ -23,17 +24,18 @@ cBlockEntity * cBlockEntity::CreateByBlockType(BLOCKTYPE a_BlockType, NIBBLETYPE
 {
 	switch (a_BlockType)
 	{
-		case E_BLOCK_CHEST:       return new cChestEntity      (a_BlockX, a_BlockY, a_BlockZ, a_World);
-		case E_BLOCK_DISPENSER:   return new cDispenserEntity  (a_BlockX, a_BlockY, a_BlockZ, a_World);
-		case E_BLOCK_DROPPER:     return new cDropperEntity    (a_BlockX, a_BlockY, a_BlockZ, a_World);
-		case E_BLOCK_ENDER_CHEST: return new cEnderChestEntity (a_BlockX, a_BlockY, a_BlockZ, a_World);
-		case E_BLOCK_LIT_FURNACE: return new cFurnaceEntity    (a_BlockX, a_BlockY, a_BlockZ, a_BlockType, a_BlockMeta, a_World);
-		case E_BLOCK_FURNACE:     return new cFurnaceEntity    (a_BlockX, a_BlockY, a_BlockZ, a_BlockType, a_BlockMeta, a_World);
-		case E_BLOCK_HOPPER:      return new cHopperEntity     (a_BlockX, a_BlockY, a_BlockZ, a_World);
-		case E_BLOCK_SIGN_POST:   return new cSignEntity       (a_BlockType, a_BlockX, a_BlockY, a_BlockZ, a_World);
-		case E_BLOCK_WALLSIGN:    return new cSignEntity       (a_BlockType, a_BlockX, a_BlockY, a_BlockZ, a_World);
-		case E_BLOCK_NOTE_BLOCK:  return new cNoteEntity       (a_BlockX, a_BlockY, a_BlockZ, a_World);
-		case E_BLOCK_JUKEBOX:     return new cJukeboxEntity    (a_BlockX, a_BlockY, a_BlockZ, a_World);
+		case E_BLOCK_CHEST:         return new cChestEntity       (a_BlockX, a_BlockY, a_BlockZ, a_World);
+		case E_BLOCK_COMMAND_BLOCK: return new cCommandBlockEntity(a_BlockX, a_BlockY, a_BlockZ, a_World);
+		case E_BLOCK_DISPENSER:     return new cDispenserEntity   (a_BlockX, a_BlockY, a_BlockZ, a_World);
+		case E_BLOCK_DROPPER:       return new cDropperEntity     (a_BlockX, a_BlockY, a_BlockZ, a_World);
+		case E_BLOCK_ENDER_CHEST:   return new cEnderChestEntity  (a_BlockX, a_BlockY, a_BlockZ, a_World);
+		case E_BLOCK_LIT_FURNACE:   return new cFurnaceEntity     (a_BlockX, a_BlockY, a_BlockZ, a_BlockType, a_BlockMeta, a_World);
+		case E_BLOCK_FURNACE:       return new cFurnaceEntity     (a_BlockX, a_BlockY, a_BlockZ, a_BlockType, a_BlockMeta, a_World);
+		case E_BLOCK_HOPPER:        return new cHopperEntity      (a_BlockX, a_BlockY, a_BlockZ, a_World);
+		case E_BLOCK_SIGN_POST:     return new cSignEntity        (a_BlockType, a_BlockX, a_BlockY, a_BlockZ, a_World);
+		case E_BLOCK_WALLSIGN:      return new cSignEntity        (a_BlockType, a_BlockX, a_BlockY, a_BlockZ, a_World);
+		case E_BLOCK_NOTE_BLOCK:    return new cNoteEntity        (a_BlockX, a_BlockY, a_BlockZ, a_World);
+		case E_BLOCK_JUKEBOX:       return new cJukeboxEntity     (a_BlockX, a_BlockY, a_BlockZ, a_World);
 	}
 	LOGD("%s: Requesting creation of an unknown block entity - block type %d (%s)",
 		__FUNCTION__, a_BlockType, ItemTypeToString(a_BlockType).c_str()
diff --git a/src/BlockEntities/CommandBlockEntity.cpp b/src/BlockEntities/CommandBlockEntity.cpp
new file mode 100644
index 000000000..7e9015d33
--- /dev/null
+++ b/src/BlockEntities/CommandBlockEntity.cpp
@@ -0,0 +1,207 @@
+
+// CommandBlockEntity.cpp
+
+// Implements the cCommandBlockEntity class representing a single command block in the world
+
+#include "Globals.h"  // NOTE: MSVC stupidness requires this to be the same across all modules
+#include "json/json.h"
+#include "CommandBlockEntity.h"
+#include "../Entities/Player.h"
+#include "../WorldStorage/FastNBT.h"
+
+#include "../CommandOutput.h"
+#include "../Root.h"
+#include "../Server.h" // ExecuteConsoleCommand()
+
+
+
+
+
+cCommandBlockEntity::cCommandBlockEntity(int a_X, int a_Y, int a_Z, cWorld * a_World) :
+	super(E_BLOCK_COMMAND_BLOCK, a_X, a_Y, a_Z, a_World),
+	m_ShouldExecute(false),
+	m_IsPowered(false)
+{}
+
+
+
+
+
+
+void cCommandBlockEntity::UsedBy(cPlayer * a_Player)
+{
+	// Nothing to do
+	UNUSED(a_Player);
+}
+
+
+
+
+
+void cCommandBlockEntity::SetCommand(const AString & a_Cmd)
+{
+	m_Command = a_Cmd;
+
+	/*
+	Vanilla requires that the server send a Block Entity Update after a command has been set
+	Therefore, command blocks don't support on-the-fly (when window is open) updating of a command and therefore...
+	...the following code can't be put in UsedBy just before the window opens
+
+	Just documenting my experience in getting this to work :P
+	*/
+	m_World->BroadcastBlockEntity(GetPosX(), GetPosY(), GetPosZ());
+}
+
+
+
+
+
+void cCommandBlockEntity::SetLastOutput(const AString & a_LastOut)
+{
+	m_World->BroadcastBlockEntity(GetPosX(), GetPosY(), GetPosZ());
+	m_LastOutput = a_LastOut;
+}
+
+
+
+
+
+void cCommandBlockEntity::SetResult(const NIBBLETYPE a_Result)
+{
+	m_Result = a_Result;
+}
+
+
+
+
+
+const AString & cCommandBlockEntity::GetCommand(void) const
+{
+	return m_Command;
+}
+
+
+
+
+
+const AString & cCommandBlockEntity::GetLastOutput(void) const
+{
+	return m_LastOutput;
+}
+
+
+
+
+
+NIBBLETYPE cCommandBlockEntity::GetResult(void) const
+{
+	return m_Result;
+}
+
+
+
+
+
+void cCommandBlockEntity::Activate(void)
+{
+	m_ShouldExecute = true;
+}
+
+
+
+
+
+void cCommandBlockEntity::SetRedstonePower(bool a_IsPowered)
+{
+	if (a_IsPowered && !m_IsPowered)
+	{
+		Activate();
+	}
+	m_IsPowered = a_IsPowered;
+}
+
+
+
+
+
+bool cCommandBlockEntity::Tick(float a_Dt, cChunk & a_Chunk)
+{
+	if (!m_ShouldExecute)
+	{
+		return false;
+	}
+	
+	m_ShouldExecute = false;
+	Execute();
+	return true;
+}
+
+
+
+
+
+void cCommandBlockEntity::SendTo(cClientHandle & a_Client)
+{
+	a_Client.SendUpdateBlockEntity(*this);
+}
+
+
+
+
+
+bool cCommandBlockEntity::LoadFromJson(const Json::Value & a_Value)
+{
+	m_Command = a_Value.get("Command", "").asString();
+
+	m_LastOutput = a_Value.get("LastOutput", "").asString();
+
+	return true;
+}
+
+
+
+
+
+void cCommandBlockEntity::SaveToJson(Json::Value & a_Value)
+{
+	a_Value["Command"] = m_Command;
+
+	a_Value["LastOutput"] = m_LastOutput;
+}
+
+
+
+
+
+void cCommandBlockEntity::Execute()
+{
+	class CommandBlockOutCb :
+		public cCommandOutputCallback
+	{
+		cCommandBlockEntity* m_CmdBlock;
+
+	public:
+		CommandBlockOutCb(cCommandBlockEntity* a_CmdBlock) : m_CmdBlock(a_CmdBlock) {}
+
+		virtual void Out(const AString & a_Text)
+		{
+			ASSERT(m_CmdBlock != NULL);
+
+			// Overwrite field
+			m_CmdBlock->SetLastOutput(a_Text);
+		}
+	} CmdBlockOutCb(this);
+
+	LOGD("cCommandBlockEntity: Executing command %s", m_Command.c_str());
+
+	cServer* Server = cRoot::Get()->GetServer();
+
+	Server->ExecuteConsoleCommand(m_Command, CmdBlockOutCb);
+
+	// TODO 2014-01-18 xdot: Update the signal strength.
+	m_Result = 0;
+}
+
+
+
+
diff --git a/src/BlockEntities/CommandBlockEntity.h b/src/BlockEntities/CommandBlockEntity.h
new file mode 100644
index 000000000..12157670f
--- /dev/null
+++ b/src/BlockEntities/CommandBlockEntity.h
@@ -0,0 +1,91 @@
+
+// CommandBlockEntity.h
+
+// Declares the cCommandBlockEntity class representing a single command block in the world
+
+
+
+
+
+#pragma once
+
+#include "BlockEntity.h"
+
+
+
+
+
+namespace Json
+{
+	class Value;
+}
+
+
+
+
+
+// tolua_begin
+
+class cCommandBlockEntity : 
+	public cBlockEntity
+{
+	typedef cBlockEntity super;
+	
+public:
+
+	// tolua_end
+	
+	/// Creates a new empty command block entity
+	cCommandBlockEntity(int a_X, int a_Y, int a_Z, cWorld * a_World);
+
+	bool LoadFromJson( const Json::Value& a_Value );
+	virtual void SaveToJson(Json::Value& a_Value ) override;
+
+	virtual bool Tick(float a_Dt, cChunk & a_Chunk) override;
+	virtual void SendTo(cClientHandle & a_Client) override;
+	virtual void UsedBy(cPlayer * a_Player) override;
+
+	void SetLastOutput(const AString & a_LastOut);
+
+	void SetResult(const NIBBLETYPE a_Result);
+
+	// tolua_begin
+
+	/// Sets the internal redstone power flag to "on" or "off", depending on the parameter. Calls Activate() if appropriate
+	void SetRedstonePower(bool a_IsPowered);
+
+	/// Sets the command block to execute a command in the next tick
+	void Activate(void);
+	
+	/// Sets the command
+	void SetCommand(const AString & a_Cmd);
+
+	/// Retrieves stored command
+	const AString & GetCommand(void) const;
+
+	/// Retrieves the last line of output generated by the command block
+	const AString & GetLastOutput(void) const;
+
+	/// Retrieves the result (signal strength) of the last operation
+	NIBBLETYPE GetResult(void) const;
+	
+	// tolua_end
+	
+private:
+
+	/// Executes the associated command
+	void Execute();
+
+	bool m_ShouldExecute;
+	bool m_IsPowered;
+
+	AString m_Command;
+
+	AString m_LastOutput;
+
+	NIBBLETYPE m_Result;
+} ;  // tolua_export
+
+
+
+