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authorTiger Wang <ziwei.tiger@outlook.com>2021-05-05 15:25:10 +0200
committerGitHub <noreply@github.com>2021-05-05 15:25:10 +0200
commita62b2b1be2103d7de2fd66c7304b7473e369be3c (patch)
treea44f2b43fd90f5c79af5e308b554349e6dc546af /src/Items/ItemTrapdoor.h
parentRename files to match code (diff)
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-rw-r--r--src/Items/ItemTrapdoor.h66
1 files changed, 66 insertions, 0 deletions
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<BLOCKTYPE>(a_HeldItem.m_ItemType), Meta);
+ }
+};