1 files changed, 81 insertions, 0 deletions
diff --git a/src/Items/ItemEndCrystal.h b/src/Items/ItemEndCrystal.h
new file mode 100644
index 000000000..b9b265b60
--- /dev/null
+++ b/src/Items/ItemEndCrystal.h
@@ -0,0 +1,81 @@
+
+#pragma once
+
+#include "ItemHandler.h"
+#include "../World.h"
+#include "../Entities/Player.h"
+
+
+
+
+
+class cItemEndCrystalHandler :
+	public cItemHandler
+{
+	using Super = cItemHandler;
+
+public:
+
+	cItemEndCrystalHandler(int a_ItemType) :
+		Super(a_ItemType)
+	{
+	}
+
+
+	virtual bool OnItemUse(
+		cWorld * a_World, cPlayer * a_Player,
+		cBlockPluginInterface & a_PluginInterface, const cItem & a_HeldItem,
+		const Vector3i a_BlockPos,
+		eBlockFace a_ClickedBlockFace) override
+	{
+		// Must click a valid block:
+		if (a_ClickedBlockFace < 0)
+		{
+			return false;
+		}
+
+		if (
+			const auto BlockType = a_World->GetBlock(a_BlockPos);
+
+			// Don't place if placement block is not obsidian or bedrock:
+			(BlockType != E_BLOCK_OBSIDIAN) && (BlockType != E_BLOCK_BEDROCK)
+		)
+		{
+			return false;
+		}
+
+		// The position of the block above the placement block.
+		const auto Above = a_BlockPos.addedY(1);
+
+		if (
+			// Don't place if two blocks above placement block aren't air:
+			((Above.y != cChunkDef::Height) && (a_World->GetBlock(Above) != E_BLOCK_AIR)) ||
+			((Above.y < (cChunkDef::Height - 1)) && (a_World->GetBlock(Above.addedY(1)) != E_BLOCK_AIR)) ||
+
+			// Refuse placement if there are any entities in a (1 by 2 by 1) bounding box with base at the block above:
+			!a_World->ForEachEntityInBox(
+				{ Above, Above + Vector3i(1, 2, 1) },
+				[](cEntity & a_Entity)
+				{
+					return true;
+				}
+			)
+		)
+		{
+			return false;
+		}
+
+		// Spawns ender crystal entity, aborts if plugin cancelled:
+		if (a_World->SpawnEnderCrystal(Vector3d(0.5, 0, 0.5) + Above, false) == cEntity::INVALID_ID)
+		{
+			return false;
+		}
+
+		if (!a_Player->IsGameModeCreative())
+		{
+			a_Player->GetInventory().RemoveOneEquippedItem();
+		}
+
+		return true;
+	}
+};