1 files changed, 156 insertions, 0 deletions

diff --git a/src/Items/ItemPumpkin.h b/src/Items/ItemPumpkin.h
new file mode 100644
index 000000000..fa00179d3
--- /dev/null
+++ b/src/Items/ItemPumpkin.h
@@ -0,0 +1,156 @@
+
+// ItemPumpkin.h
+
+// Declares the cItemPumpkinHandler class representing the pumpkin block in its item form
+
+
+
+
+
+#pragma once
+
+#include "ItemHandler.h"
+
+
+
+
+
+class cItemPumpkinHandler:
+	public cItemHandler
+{
+	typedef cItemHandler super;
+
+public:
+	cItemPumpkinHandler(void):
+		super(E_BLOCK_PUMPKIN)
+	{
+	}
+
+
+	virtual bool OnPlayerPlace(
+		cWorld & a_World, cPlayer & a_Player, const cItem & a_EquippedItem,
+		int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_BlockFace,
+		int a_CursorX, int a_CursorY, int a_CursorZ
+	) override
+	{
+		// First try spawning a snow golem or an iron golem:
+		int PlacedBlockX = a_BlockX;
+		int PlacedBlockY = a_BlockY;
+		int PlacedBlockZ = a_BlockZ;
+		AddFaceDirection(PlacedBlockX, PlacedBlockY, PlacedBlockZ, a_BlockFace);
+		if (TrySpawnGolem(a_World, a_Player, PlacedBlockX, PlacedBlockY, PlacedBlockZ))
+		{
+			// The client thinks that they placed the pumpkin, let them know it's been replaced:
+			a_Player.SendBlocksAround(PlacedBlockX, PlacedBlockY, PlacedBlockZ);
+			return true;
+		}
+
+		// No golem at these coords, place the block normally:
+		return super::OnPlayerPlace(a_World, a_Player, a_EquippedItem, a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, a_CursorX, a_CursorY, a_CursorZ);
+	}
+
+
+	/** Spawns a snow / iron golem if the shape matches the recipe, supposing that the block placed at the specified coords is a pumpkin.
+	Returns true if the golem blocks are removed (for spawning), false if the recipe is not matched. */
+	bool TrySpawnGolem(cWorld & a_World, cPlayer & a_Player, int a_BlockX, int a_BlockY, int a_BlockZ)
+	{
+		// A golem can't form with a pumpkin below level 2 or above level 255
+		if ((a_BlockY < 2) || (a_BlockY >= cChunkDef::Height))
+		{
+			return false;
+		}
+
+		// Decide which golem to try spawning based on the block below the placed pumpkin:
+		switch (a_World.GetBlock(a_BlockX, a_BlockY - 1, a_BlockZ))
+		{
+			case E_BLOCK_SNOW_BLOCK: return TrySpawnSnowGolem(a_World, a_Player, a_BlockX, a_BlockY, a_BlockZ);
+			case E_BLOCK_IRON_BLOCK: return TrySpawnIronGolem(a_World, a_Player, a_BlockX, a_BlockY, a_BlockZ);
+			default:
+			{
+				// No golem here
+				return false;
+			}
+		}
+	}
+
+
+	/** Spawns a snow golem if the shape matches the recipe, supposing that the block placed at the specified coords is a pumpkin.
+	Returns true if the golem blocks are removed (for spawning), false if the recipe is not matched.
+	Assumes that the block below the specified block has already been checked and is a snow block. */
+	bool TrySpawnSnowGolem(cWorld & a_World, cPlayer & a_Player, int a_BlockX, int a_BlockY, int a_BlockZ)
+	{
+		// Need one more snow block 2 blocks below the pumpkin:
+		if (a_World.GetBlock(a_BlockX, a_BlockY - 2, a_BlockZ) != E_BLOCK_SNOW_BLOCK)
+		{
+			return false;
+		}
+
+		// Try to place air blocks where the original recipe blocks were:
+		sSetBlockVector AirBlocks;
+		AirBlocks.emplace_back(a_BlockX, a_BlockY,     a_BlockZ, E_BLOCK_AIR, 0);  // Head
+		AirBlocks.emplace_back(a_BlockX, a_BlockY - 1, a_BlockZ, E_BLOCK_AIR, 0);  // Torso
+		AirBlocks.emplace_back(a_BlockX, a_BlockY - 2, a_BlockZ, E_BLOCK_AIR, 0);  // Legs
+		if (!a_Player.PlaceBlocks(AirBlocks))
+		{
+			return false;
+		}
+
+		// Spawn the golem:
+		a_World.SpawnMob(static_cast<double>(a_BlockX) + 0.5, a_BlockY - 2, static_cast<double>(a_BlockZ) + 0.5, mtSnowGolem);
+		return true;
+	}
+
+
+	/** Spawns an iron golem if the shape matches the recipe, supposing that the block placed at the specified coords is a pumpkin.
+	Returns true if the golem blocks are removed (for spawning), false if the recipe is not matched.
+	Assumes that the block below the specified block has already been checked and is an iron block. */
+	bool TrySpawnIronGolem(cWorld & a_World, cPlayer & a_Player, int a_BlockX, int a_BlockY, int a_BlockZ)
+	{
+		// Need one more iron block 2 blocks below the pumpkin:
+		if (a_World.GetBlock(a_BlockX, a_BlockY - 2, a_BlockZ) != E_BLOCK_IRON_BLOCK)
+		{
+			return false;
+		}
+
+		// Check the two arm directions (X, Z) using a loop over two sets of offset vectors:
+		static const Vector3i ArmOffsets[] =
+		{
+			{1, 0, 0},
+			{0, 0, 1},
+		};
+		for (size_t i = 0; i < ARRAYCOUNT(ArmOffsets); i++)
+		{
+			// If the arm blocks don't match, bail out of this loop repetition:
+			if (
+				(a_World.GetBlock(a_BlockX + ArmOffsets[i].x, a_BlockY - 1, a_BlockZ + ArmOffsets[i].z) != E_BLOCK_IRON_BLOCK) ||
+				(a_World.GetBlock(a_BlockX - ArmOffsets[i].x, a_BlockY - 1, a_BlockZ - ArmOffsets[i].z) != E_BLOCK_IRON_BLOCK)
+			)
+			{
+				continue;
+			}
+
+			// Try to place air blocks where the original recipe blocks were:
+			sSetBlockVector AirBlocks;
+			AirBlocks.emplace_back(a_BlockX,                   a_BlockY,     a_BlockZ,                   E_BLOCK_AIR, 0);  // Head
+			AirBlocks.emplace_back(a_BlockX,                   a_BlockY - 1, a_BlockZ,                   E_BLOCK_AIR, 0);  // Torso
+			AirBlocks.emplace_back(a_BlockX,                   a_BlockY - 2, a_BlockZ,                   E_BLOCK_AIR, 0);  // Legs
+			AirBlocks.emplace_back(a_BlockX + ArmOffsets[i].x, a_BlockY - 1, a_BlockZ + ArmOffsets[i].z, E_BLOCK_AIR, 0);  // Arm
+			AirBlocks.emplace_back(a_BlockX - ArmOffsets[i].x, a_BlockY - 1, a_BlockZ - ArmOffsets[i].z, E_BLOCK_AIR, 0);  // Arm
+			if (!a_Player.PlaceBlocks(AirBlocks))
+			{
+				return false;
+			}
+
+			// Spawn the golem:
+			a_World.SpawnMob(static_cast<double>(a_BlockX) + 0.5, a_BlockY - 2, static_cast<double>(a_BlockZ) + 0.5, mtIronGolem);
+			return true;
+		}  // for i - ArmOffsets[]
+
+		// Neither arm offset matched, this thing is not a complete golem
+		return false;
+	}
+};
+
+
+
+