4 files changed, 38 insertions, 9 deletions
diff --git a/src/BlockEntities/DropSpenserEntity.h b/src/BlockEntities/DropSpenserEntity.h
index 9f58d0b07..be56447aa 100644
--- a/src/BlockEntities/DropSpenserEntity.h
+++ b/src/BlockEntities/DropSpenserEntity.h
@@ -11,7 +11,7 @@
 #pragma once
 
 #include "BlockEntityWithItems.h"
-
+#include "RedstonePoweredEntity.h"
 
 
 
@@ -31,6 +31,9 @@ class cServer;
 // tolua_begin
 class cDropSpenserEntity :
 	public cBlockEntityWithItems
+	// tolua_end
+	, public cRedstonePoweredEntity
+	// tolua_begin
 {
 	typedef cBlockEntityWithItems super;
 
@@ -64,10 +67,10 @@ public:
 	/// Sets the dropspenser to dropspense an item in the next tick
 	void Activate(void);
 	
-	/// Sets the internal redstone power flag to "on" or "off", depending on the parameter. Calls Activate() if appropriate
-	void SetRedstonePower(bool a_IsPowered);
-	
 	// tolua_end
+	
+	/// Sets the internal redstone power flag to "on" or "off", depending on the parameter. Calls Activate() if appropriate
+	virtual void SetRedstonePower(bool a_IsPowered) override;
 
 protected:
 	bool m_ShouldDropSpense;  ///< If true, the dropspenser will dropspense an item in the next tick
diff --git a/src/BlockEntities/HopperEntity.cpp b/src/BlockEntities/HopperEntity.cpp
index 48d3b8dcc..88e7b8e1b 100644
--- a/src/BlockEntities/HopperEntity.cpp
+++ b/src/BlockEntities/HopperEntity.cpp
@@ -549,13 +549,13 @@ bool cHopperEntity::MoveItemsFromSlot(cBlockEntityWithItems & a_Entity, int a_Sl
 bool cHopperEntity::MoveItemsToChest(cChunk & a_Chunk, int a_BlockX, int a_BlockY, int a_BlockZ)
 {
 	// Try the chest directly connected to the hopper:
-	cChestEntity * Chest = (cChestEntity *)a_Chunk.GetBlockEntity(a_BlockX, a_BlockY, a_BlockZ);
-	if (Chest == NULL)
+	cChestEntity * ConnectedChest = (cChestEntity *)a_Chunk.GetBlockEntity(a_BlockX, a_BlockY, a_BlockZ);
+	if (ConnectedChest == NULL)
 	{
 		LOGWARNING("%s: A chest entity was not found where expected, at {%d, %d, %d}", __FUNCTION__, a_BlockX, a_BlockY, a_BlockZ);
 		return false;
 	}
-	if (MoveItemsToGrid(*Chest))
+	if (MoveItemsToGrid(*ConnectedChest))
 	{
 		// Chest block directly connected was not full
 		return true;
@@ -586,13 +586,13 @@ bool cHopperEntity::MoveItemsToChest(cChunk & a_Chunk, int a_BlockX, int a_Block
 		}
 
 		BLOCKTYPE Block = Neighbor->GetBlock(x, a_BlockY, z);
-		if (Block != Chest->GetBlockType())
+		if (Block != ConnectedChest->GetBlockType())
 		{
 			// Not the same kind of chest
 			continue;
 		}
 
-		Chest = (cChestEntity *)Neighbor->GetBlockEntity(a_BlockX + Coords[i].x, a_BlockY, a_BlockZ + Coords[i].z);
+		cChestEntity * Chest = (cChestEntity *)Neighbor->GetBlockEntity(a_BlockX + Coords[i].x, a_BlockY, a_BlockZ + Coords[i].z);
 		if (Chest == NULL)
 		{
 			LOGWARNING("%s: A chest entity was not found where expected, at {%d, %d, %d} (%d, %d)", __FUNCTION__, a_BlockX + Coords[i].x, a_BlockY, a_BlockZ + Coords[i].z, x, z);
diff --git a/src/BlockEntities/NoteEntity.h b/src/BlockEntities/NoteEntity.h
index e8497da3e..f538de060 100644
--- a/src/BlockEntities/NoteEntity.h
+++ b/src/BlockEntities/NoteEntity.h
@@ -2,6 +2,7 @@
 #pragma once
 
 #include "BlockEntity.h"
+#include "RedstonePoweredEntity.h"
 
 
 namespace Json
@@ -30,6 +31,9 @@ enum ENUM_NOTE_INSTRUMENTS
 
 class cNoteEntity :
 	public cBlockEntity
+	// tolua_end
+	, public cRedstonePoweredEntity
+	// tolua_begin
 {
 	typedef cBlockEntity super;
 public:
@@ -38,6 +42,7 @@ public:
 
 	/// Creates a new note entity. a_World may be NULL
 	cNoteEntity(int a_X, int a_Y, int a_Z, cWorld * a_World);
+	virtual ~cNoteEntity() {}
 
 	bool LoadFromJson(const Json::Value & a_Value);
 	virtual void SaveToJson(Json::Value & a_Value) override;
@@ -53,6 +58,14 @@ public:
 	
 	virtual void UsedBy(cPlayer * a_Player) override;
 	virtual void SendTo(cClientHandle &) override {}
+	
+	virtual void SetRedstonePower(bool a_Value)
+	{
+		if (a_Value)
+		{
+			MakeSound();
+		}
+	}
 
 	static const char * GetClassStatic(void) { return "cNoteEntity"; }
 
diff --git a/src/BlockEntities/RedstonePoweredEntity.h b/src/BlockEntities/RedstonePoweredEntity.h
new file mode 100644
index 000000000..f11df4fc4
--- /dev/null
+++ b/src/BlockEntities/RedstonePoweredEntity.h
@@ -0,0 +1,13 @@
+
+#pragma once
+
+// Interface class representing a blockEntity that responds to redstone
+class cRedstonePoweredEntity
+{
+public:
+
+	virtual ~cRedstonePoweredEntity() {};
+
+	/// Sets the internal redstone power flag to "on" or "off", depending on the parameter. Calls Activate() if appropriate
+	virtual void SetRedstonePower(bool a_IsPowered) = 0;
+};