1 files changed, 479 insertions, 0 deletions

diff --git a/src/BlockEntities/FurnaceEntity.cpp b/src/BlockEntities/FurnaceEntity.cpp
new file mode 100644
index 000000000..ec5ebe8b9
--- /dev/null
+++ b/src/BlockEntities/FurnaceEntity.cpp
@@ -0,0 +1,479 @@
+
+#include "Globals.h"  // NOTE: MSVC stupidness requires this to be the same across all modules
+
+#include "FurnaceEntity.h"
+#include "../UI/Window.h"
+#include "../Entities/Player.h"
+#include "../Root.h"
+#include "../Chunk.h"
+#include <json/json.h>
+
+
+
+
+
+
+enum
+{
+	PROGRESSBAR_SMELTING = 0,
+	PROGRESSBAR_FUEL = 1,
+} ;
+
+
+
+
+
+cFurnaceEntity::cFurnaceEntity(int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta, cWorld * a_World) :
+	super(E_BLOCK_FURNACE, a_BlockX, a_BlockY, a_BlockZ, ContentsWidth, ContentsHeight, a_World),
+	m_BlockType(a_BlockType),
+	m_BlockMeta(a_BlockMeta),
+	m_CurrentRecipe(NULL),
+	m_IsCooking((a_World->GetBlock(a_BlockX, a_BlockY, a_BlockZ) == E_BLOCK_LIT_FURNACE)),
+	m_NeedCookTime(0),
+	m_TimeCooked(0),
+	m_FuelBurnTime(0),
+	m_TimeBurned(0),
+	m_LastProgressFuel(0),
+	m_LastProgressCook(0)
+{
+	cBlockEntityWindowOwner::SetBlockEntity(this);
+	m_Contents.AddListener(*this);
+}
+
+
+
+
+
+cFurnaceEntity::~cFurnaceEntity()
+{
+	// Tell window its owner is destroyed
+	cWindow * Window = GetWindow();
+	if (Window != NULL)
+	{
+		Window->OwnerDestroyed();
+	}
+}
+
+
+
+
+
+void cFurnaceEntity::UsedBy(cPlayer * a_Player)
+{
+	if (GetWindow() == NULL)
+	{
+		OpenWindow(new cFurnaceWindow(m_PosX, m_PosY, m_PosZ, this));
+	}
+	cWindow * Window = GetWindow();
+	if (Window != NULL)
+	{
+		if (a_Player->GetWindow() != Window)
+		{
+			a_Player->OpenWindow(Window);
+			BroadcastProgress(PROGRESSBAR_FUEL,     m_LastProgressFuel);
+			BroadcastProgress(PROGRESSBAR_SMELTING, m_LastProgressCook);
+		}
+	}
+}
+
+
+
+
+
+/// Restarts cooking. Used after the furnace is loaded from storage to set up the internal variables so that cooking continues, if it was active. Returns true if cooking.
+bool cFurnaceEntity::ContinueCooking(void)
+{
+	UpdateInput();
+	UpdateFuel();
+	return m_IsCooking;
+}
+
+
+
+
+
+bool cFurnaceEntity::Tick(float a_Dt, cChunk & a_Chunk)
+{
+	if (m_FuelBurnTime <= 0)
+	{
+		// No fuel is burning, reset progressbars and bail out
+		if ((m_LastProgressCook > 0) || (m_LastProgressFuel > 0))
+		{
+			UpdateProgressBars();
+		}
+		return false;
+	}
+
+	if (m_IsCooking)
+	{
+		m_TimeCooked++;
+		if (m_TimeCooked >= m_NeedCookTime)
+		{
+			// Finished smelting one item
+			FinishOne(a_Chunk);
+		}
+	}
+	
+	m_TimeBurned++;
+	if (m_TimeBurned >= m_FuelBurnTime)
+	{
+		// The current fuel has been exhausted, use another one, if possible
+		BurnNewFuel();
+	}
+	
+	UpdateProgressBars();
+	
+	return true;
+}
+
+
+
+
+
+bool cFurnaceEntity::LoadFromJson(const Json::Value & a_Value)
+{
+	m_PosX = a_Value.get("x", 0).asInt();
+	m_PosY = a_Value.get("y", 0).asInt();
+	m_PosZ = a_Value.get("z", 0).asInt();
+
+	Json::Value AllSlots = a_Value.get("Slots", 0);
+	int SlotIdx = 0;
+	for (Json::Value::iterator itr = AllSlots.begin(); itr != AllSlots.end(); ++itr)
+	{
+		cItem Item;
+		Item.FromJson(*itr);
+		SetSlot(SlotIdx, Item);
+		SlotIdx++;
+	}
+
+	m_NeedCookTime = (int)(a_Value.get("CookTime",   0).asDouble() / 50);
+	m_TimeCooked   = (int)(a_Value.get("TimeCooked", 0).asDouble() / 50);
+	m_FuelBurnTime = (int)(a_Value.get("BurnTime",   0).asDouble() / 50);
+	m_TimeBurned   = (int)(a_Value.get("TimeBurned", 0).asDouble() / 50);
+
+	return true;
+}
+
+
+
+
+
+void cFurnaceEntity::SaveToJson( Json::Value& a_Value )
+{
+	a_Value["x"] = m_PosX;
+	a_Value["y"] = m_PosY;
+	a_Value["z"] = m_PosZ;
+
+	Json::Value AllSlots;
+	int NumSlots = m_Contents.GetNumSlots();
+	for (int i = 0; i < NumSlots; i++)
+	{
+		Json::Value Slot;
+		m_Contents.GetSlot(i).GetJson(Slot);
+		AllSlots.append(Slot);
+	}
+	a_Value["Slots"] = AllSlots;
+
+	a_Value["CookTime"]   = m_NeedCookTime * 50;
+	a_Value["TimeCooked"] = m_TimeCooked   * 50;
+	a_Value["BurnTime"]   = m_FuelBurnTime * 50;
+	a_Value["TimeBurned"] = m_TimeBurned   * 50;
+}
+
+
+
+
+
+void cFurnaceEntity::SendTo(cClientHandle & a_Client)
+{
+	// Nothing needs to be sent
+	UNUSED(a_Client);
+}
+
+
+
+
+
+void cFurnaceEntity::BroadcastProgress(int a_ProgressbarID, short a_Value)
+{
+	cWindow * Window = GetWindow();
+	if (Window != NULL)
+	{
+		Window->BroadcastProgress(a_ProgressbarID, a_Value);
+	}
+}
+
+
+
+
+
+/// One item finished cooking
+void cFurnaceEntity::FinishOne(cChunk & a_Chunk)
+{
+	m_TimeCooked = 0;
+
+	if (m_Contents.GetSlot(fsOutput).IsEmpty())
+	{
+		m_Contents.SetSlot(fsOutput, *m_CurrentRecipe->Out);
+	}
+	else
+	{
+		m_Contents.ChangeSlotCount(fsOutput, m_CurrentRecipe->Out->m_ItemCount);
+	}
+	m_Contents.ChangeSlotCount(fsInput, -m_CurrentRecipe->In->m_ItemCount);
+	
+	UpdateIsCooking();
+}
+
+
+
+
+
+void cFurnaceEntity::BurnNewFuel(void)
+{
+	cFurnaceRecipe * FR = cRoot::Get()->GetFurnaceRecipe();
+	int NewTime = FR->GetBurnTime(m_Contents.GetSlot(fsFuel));
+	if (NewTime == 0)
+	{
+		// The item in the fuel slot is not suitable
+		m_FuelBurnTime = 0;
+		m_TimeBurned = 0;
+		SetIsCooking(false);
+		return;
+	}
+	
+	// Is the input and output ready for cooking?
+	if (!CanCookInputToOutput())
+	{
+		return;
+	}
+
+	// Burn one new fuel:
+	m_FuelBurnTime = NewTime;
+	m_TimeBurned = 0;
+	SetIsCooking(true);
+	if (m_Contents.GetSlot(fsFuel).m_ItemType == E_ITEM_LAVA_BUCKET)
+	{
+		m_Contents.SetSlot(fsFuel, cItem(E_ITEM_BUCKET));
+	}
+	else
+	{
+		m_Contents.ChangeSlotCount(fsFuel, -1);
+	}
+}
+
+
+
+
+
+void cFurnaceEntity::OnSlotChanged(cItemGrid * a_ItemGrid, int a_SlotNum)
+{
+	super::OnSlotChanged(a_ItemGrid, a_SlotNum);
+	
+	if (m_World == NULL)
+	{
+		// The furnace isn't initialized yet, do no processing
+		return;
+	}
+	
+	ASSERT(a_ItemGrid == &m_Contents);
+	switch (a_SlotNum)
+	{
+		case fsInput:
+		{
+			UpdateInput();
+			break;
+		}
+		
+		case fsFuel:
+		{
+			UpdateFuel();
+			break;
+		}
+		
+		case fsOutput:
+		{
+			UpdateOutput();
+			break;
+		}
+	}
+}
+
+
+
+
+
+
+/// Updates the current recipe, based on the current input
+void cFurnaceEntity::UpdateInput(void)
+{
+	if (!m_Contents.GetSlot(fsInput).IsStackableWith(m_LastInput))
+	{
+		// The input is different from what we had before, reset the cooking time
+		m_TimeCooked = 0;
+	}
+	m_LastInput = m_Contents.GetSlot(fsInput);
+	
+	cFurnaceRecipe * FR = cRoot::Get()->GetFurnaceRecipe();
+	m_CurrentRecipe = FR->GetRecipeFrom(m_Contents.GetSlot(fsInput));
+	if (!CanCookInputToOutput())
+	{
+		// This input cannot be cooked
+		m_NeedCookTime = 0;
+		SetIsCooking(false);
+	}
+	else
+	{
+		m_NeedCookTime = m_CurrentRecipe->CookTime;
+		SetIsCooking(true);
+		
+		// Start burning new fuel if there's no flame now:
+		if (GetFuelBurnTimeLeft() <= 0)
+		{
+			BurnNewFuel();
+		}
+	}
+}
+
+
+
+
+
+/// Called when the fuel slot changes or when the fuel is spent, burns another piece of fuel if appropriate
+void cFurnaceEntity::UpdateFuel(void)
+{
+	if (m_FuelBurnTime > m_TimeBurned)
+	{
+		// The current fuel is still burning, don't modify anything:
+		return;
+	}
+	
+	// The current fuel is spent, try to burn some more:
+	BurnNewFuel();
+}
+
+
+
+
+
+/// Called when the output slot changes; starts burning if space became available
+void cFurnaceEntity::UpdateOutput(void)
+{
+	if (!CanCookInputToOutput())
+	{
+		// Cannot cook anymore:
+		m_TimeCooked = 0;
+		m_NeedCookTime = 0;
+		SetIsCooking(false);
+		return;
+	}
+	
+	// No need to burn new fuel, the Tick() function will take care of that
+
+	// Can cook, start cooking if not already underway:
+	m_NeedCookTime = m_CurrentRecipe->CookTime;
+	SetIsCooking(m_FuelBurnTime > 0);
+}
+
+
+
+
+
+/// Updates the m_IsCooking, based on the input slot, output slot and m_FuelBurnTime / m_TimeBurned
+void cFurnaceEntity::UpdateIsCooking(void)
+{
+	if (
+		!CanCookInputToOutput() ||        // Cannot cook this
+		(m_FuelBurnTime <= 0) ||          // No fuel
+		(m_TimeBurned >= m_FuelBurnTime)  // Fuel burnt out
+	)
+	{
+		// Reset everything
+		SetIsCooking(false);
+		m_TimeCooked = 0;
+		m_NeedCookTime = 0;
+		return;
+	}
+	
+	SetIsCooking(true);
+}
+
+
+
+
+
+/// Returns true if the input can be cooked into output and the item counts allow for another cooking operation
+bool cFurnaceEntity::CanCookInputToOutput(void) const
+{
+	if (m_CurrentRecipe == NULL)
+	{
+		// This input cannot be cooked
+		return false;
+	}
+	
+	if (m_Contents.GetSlot(fsOutput).IsEmpty())
+	{
+		// The output is empty, can cook
+		return true;
+	}
+
+	if (!m_Contents.GetSlot(fsOutput).IsStackableWith(*m_CurrentRecipe->Out))
+	{
+		// The output slot is blocked with something that cannot be stacked with the recipe's output
+		return false;
+	}
+	
+	if (m_Contents.GetSlot(fsOutput).IsFullStack())
+	{
+		// Cannot add any more items to the output slot
+		return false;
+	}
+	
+	return true;
+}
+
+
+
+
+
+/// Broadcasts progressbar updates, if needed
+void cFurnaceEntity::UpdateProgressBars(void)
+{
+	// In order to preserve bandwidth, an update is sent only every 10th tick
+	// That's why the comparisons use the division by eight
+	
+	int CurFuel = (m_FuelBurnTime > 0) ? (200 - 200 * m_TimeBurned / m_FuelBurnTime) : 0;
+	if ((CurFuel / 8) != (m_LastProgressFuel / 8))
+	{
+		BroadcastProgress(PROGRESSBAR_FUEL, CurFuel);
+		m_LastProgressFuel = CurFuel;
+	}
+	
+	int CurCook = (m_NeedCookTime > 0) ? (200 * m_TimeCooked / m_NeedCookTime) : 0;
+	if ((CurCook / 8) != (m_LastProgressCook / 8))
+	{
+		BroadcastProgress(PROGRESSBAR_SMELTING, CurCook);
+		m_LastProgressCook = CurCook;
+	}
+}
+
+
+
+
+
+void cFurnaceEntity::SetIsCooking(bool a_IsCooking)
+{
+	if (a_IsCooking == m_IsCooking)
+	{
+		return;
+	}
+
+	m_IsCooking = a_IsCooking;
+		
+	// Light or extinguish the furnace:
+	m_World->FastSetBlock(m_PosX, m_PosY, m_PosZ, m_IsCooking ? E_BLOCK_LIT_FURNACE : E_BLOCK_FURNACE, m_BlockMeta);
+}
+
+
+
+