1 files changed, 106 insertions, 0 deletions

diff --git a/src/Items/ItemLilypad.h b/src/Items/ItemLilypad.h
new file mode 100644
index 000000000..8496b9f31
--- /dev/null
+++ b/src/Items/ItemLilypad.h
@@ -0,0 +1,106 @@
+
+#pragma once
+
+#include "ItemHandler.h"
+#include "../Entities/Player.h"
+#include "Vector3.h"
+#include "../LineBlockTracer.h"
+#include "BlockInfo.h"
+
+
+
+
+
+class cItemLilypadHandler :
+	public cItemHandler
+{
+	typedef cItemHandler super;
+
+public:
+	cItemLilypadHandler(BLOCKTYPE a_BlockType)
+		: cItemHandler(a_BlockType)
+	{
+
+	}
+
+	virtual bool IsPlaceable(void) override
+	{
+		return false; // Set as not placeable so OnItemUse is called
+	}
+
+	virtual bool OnItemUse(cWorld * a_World, cPlayer * a_Player, const cItem & a_Item, int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_BlockFace) override
+	{
+		if (a_BlockFace > BLOCK_FACE_NONE)
+		{
+			// Clicked on the side of a submerged block; vanilla allows placement, so should we
+			AddFaceDirection(a_BlockX, a_BlockY, a_BlockZ, a_BlockFace);
+			a_World->SetBlock(a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_LILY_PAD, 0);
+			if (!a_Player->IsGameModeCreative())
+				a_Player->GetInventory().RemoveOneEquippedItem();
+			return true;
+		}
+
+		class cCallbacks :
+			public cBlockTracer::cCallbacks
+		{
+		public:
+			cCallbacks(cWorld * a_World) :
+				m_HasHitFluid(false),
+				m_World(a_World)
+			{
+			}
+
+			virtual bool OnNextBlock(int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta, char a_EntryFace) override
+			{
+				if (IsBlockWater(a_BlockType))
+				{
+					if ((a_BlockMeta != 0) || (a_EntryFace == BLOCK_FACE_NONE)) // The hit block should be a source. The FACE_NONE check is clicking whilst submerged
+					{
+						return false;
+					}
+					a_EntryFace = BLOCK_FACE_YP; // Always place pad at top of water block
+					AddFaceDirection(a_BlockX, a_BlockY, a_BlockZ, (eBlockFace)a_EntryFace);
+					BLOCKTYPE Block = m_World->GetBlock(a_BlockX, a_BlockY, a_BlockZ);
+					if (
+						!IsBlockWater(Block) &&
+						cBlockInfo::FullyOccupiesVoxel(Block)
+						)
+					{
+						// Can't place lilypad on air/in another block!
+						return true;
+					}
+					m_HasHitFluid = true;
+					m_Pos.Set(a_BlockX, a_BlockY, a_BlockZ);
+					return true;
+				}
+				return false;
+			}
+
+			Vector3i m_Pos;
+			bool m_HasHitFluid;
+			cWorld * m_World;
+
+		};
+
+		cCallbacks Callbacks(a_World);
+		cLineBlockTracer Tracer(*a_Player->GetWorld(), Callbacks);
+		Vector3d Start(a_Player->GetEyePosition() + a_Player->GetLookVector());
+		Vector3d End(a_Player->GetEyePosition() + a_Player->GetLookVector() * 5);
+
+		Tracer.Trace(Start.x, Start.y, Start.z, End.x, End.y, End.z);
+
+		if (Callbacks.m_HasHitFluid)
+		{
+			a_World->SetBlock(Callbacks.m_Pos.x, Callbacks.m_Pos.y, Callbacks.m_Pos.z, E_BLOCK_LILY_PAD, 0);
+			if (!a_Player->IsGameModeCreative())
+				a_Player->GetInventory().RemoveOneEquippedItem();
+			return true;
+		}
+
+		return false;
+	}
+};
+
+
+
+