From a62b2b1be2103d7de2fd66c7304b7473e369be3c Mon Sep 17 00:00:00 2001 From: Tiger Wang Date: Wed, 5 May 2021 14:25:10 +0100 Subject: Move item placement into item handlers (#5184) * Move item placement into item handlers + Add appropriate CanBeAt checks in cPlayer::PlaceBlocks, into which all placement handlers call. * Partly addresses #5157 * Fixes #4878 * Fixes #2919 * Fixes #4629 * Fixes #4239 * Fixes #4849 Co-authored-by: changyong guo Co-authored-by: Xotheus Co-authored-by: Krist Pregracke * Review fixes * Update APIDesc.lua * Rename Co-authored-by: changyong guo Co-authored-by: Xotheus Co-authored-by: Krist Pregracke --- src/Items/ItemTrapdoor.h | 66 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 src/Items/ItemTrapdoor.h (limited to 'src/Items/ItemTrapdoor.h') diff --git a/src/Items/ItemTrapdoor.h b/src/Items/ItemTrapdoor.h new file mode 100644 index 000000000..9cb89b8bf --- /dev/null +++ b/src/Items/ItemTrapdoor.h @@ -0,0 +1,66 @@ + +#pragma once + +#include "ItemHandler.h" +#include "Blocks/BlockTrapdoor.h" + + + + + +class cItemTrapdoorHandler : + public cItemHandler +{ + using Super = cItemHandler; + +public: + + using Super::Super; + +private: + + inline static NIBBLETYPE BlockFaceToMetaData(eBlockFace a_BlockFace) + { + switch (a_BlockFace) + { + case BLOCK_FACE_ZP: return 0x1; + case BLOCK_FACE_ZM: return 0x0; + case BLOCK_FACE_XP: return 0x3; + case BLOCK_FACE_XM: return 0x2; + default: UNREACHABLE("Unsupported block face"); + } + } + + + virtual bool CommitPlacement(cPlayer & a_Player, const cItem & a_HeldItem, const Vector3i a_PlacePosition, const eBlockFace a_ClickedBlockFace, const Vector3i a_CursorPosition) override + { + NIBBLETYPE Meta; + + if (a_ClickedBlockFace == BLOCK_FACE_YP) + { + // Trapdoor is placed on top of a block. + // Engage yaw rotation to determine hinge direction: + Meta = cBlockTrapdoorHandler::YawToMetaData(a_Player.GetYaw()); + } + else if (a_ClickedBlockFace == BLOCK_FACE_YM) + { + // Trapdoor is placed on bottom of a block. + // Engage yaw rotation to determine hinge direction, and toggle 'Move up half-block' bit on: + Meta = cBlockTrapdoorHandler::YawToMetaData(a_Player.GetYaw()) | 0x8; + } + else + { + // Placement on block sides; hinge direction is determined by which side was clicked: + Meta = BlockFaceToMetaData(a_ClickedBlockFace); + + if (a_CursorPosition.y > 7) + { + // Trapdoor is placed on a higher half of a vertical block. + // Toggle 'Move up half-block' bit on: + Meta |= 0x8; + } + } + + return a_Player.PlaceBlock(a_PlacePosition, static_cast(a_HeldItem.m_ItemType), Meta); + } +}; -- cgit v1.2.3