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