3ff57559e3
* Transition to non-pointer item handler * That is my destructor - I decide when I leave this world * I declare your destruction private and you final
98 lines
2.1 KiB
C++
98 lines
2.1 KiB
C++
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#pragma once
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#include "../Entities/Boat.h"
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#include "../LineBlockTracer.h"
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class cItemBoatHandler 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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using Super::Super;
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virtual bool OnItemUse(
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cWorld * a_World,
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cPlayer * a_Player,
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cBlockPluginInterface & a_PluginInterface,
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const cItem & a_HeldItem,
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const Vector3i a_ClickedBlockPos,
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eBlockFace a_ClickedBlockFace
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) const override
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{
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// Only allow placing blocks on top of blocks, or when not in range of dest block:
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if ((a_ClickedBlockFace != BLOCK_FACE_YM) && (a_ClickedBlockFace != BLOCK_FACE_NONE))
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{
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return false;
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}
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// Find the actual placement position by tracing line of sight until non-air block:
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class cCallbacks:
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public cBlockTracer::cCallbacks
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{
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public:
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Vector3d m_Pos;
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bool m_HasFound;
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cCallbacks():
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m_HasFound(false)
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{
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}
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virtual bool OnNextBlock(Vector3i a_CBBlockPos, BLOCKTYPE a_CBBlockType, NIBBLETYPE a_CBBlockMeta, eBlockFace a_CBEntryFace) override
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{
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if (a_CBBlockType != E_BLOCK_AIR)
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{
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m_Pos = a_CBBlockPos;
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m_HasFound = true;
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return true;
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}
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return false;
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}
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} Callbacks;
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auto Start = a_Player->GetEyePosition() + a_Player->GetLookVector();
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auto End = a_Player->GetEyePosition() + a_Player->GetLookVector() * 5;
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cLineBlockTracer::Trace(*a_World, Callbacks, Start, End);
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if (!Callbacks.m_HasFound)
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{
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return false;
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}
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// Block above must be air to spawn a boat (prevents spawning a boat underwater)
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auto PosAbove = Callbacks.m_Pos.Floor().addedY(1);
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if (!cChunkDef::IsValidHeight(PosAbove.y))
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{
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return false;
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}
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BLOCKTYPE BlockAbove = a_World->GetBlock(PosAbove);
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if (BlockAbove != E_BLOCK_AIR)
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{
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return false;
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}
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// Spawn block at water level
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if (a_World->SpawnBoat(Callbacks.m_Pos + Vector3d(0.5, 1, 0.5), cBoat::ItemToMaterial(a_Player->GetEquippedItem())) == cEntity::INVALID_ID)
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{
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return false;
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}
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// Remove boat from players hand
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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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