1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
|
#pragma once
#include "ItemHandler.h"
class cItemSlabHandler final : public cItemHandler
{
using Super = cItemHandler;
public:
using Super::Super;
private:
virtual bool CommitPlacement(
cPlayer & a_Player,
const cItem & a_HeldItem,
const Vector3i a_PlacePosition,
const eBlockFace a_ClickedBlockFace,
const Vector3i a_CursorPosition
) const override
{
// Confer BlockSlab.h, which we're in cahoots with to make the below logic work.
// If clicking a slab, combine it into a double-slab:
if (cBlockSlabHandler::IsAnySlabType(a_Player.GetWorld()->GetBlock(a_PlacePosition)))
{
if (!a_Player.PlaceBlock(
a_PlacePosition,
GetDoubleSlabType(static_cast<BLOCKTYPE>(a_HeldItem.m_ItemType)),
static_cast<NIBBLETYPE>(a_HeldItem.m_ItemDamage)
))
{
return false;
}
a_Player.SendBlocksAround(a_PlacePosition, 2); // (see below)
return true;
}
// Set the correct metadata based on player equipped item:
if (!a_Player.PlaceBlock(
a_PlacePosition,
static_cast<BLOCKTYPE>(a_HeldItem.m_ItemType),
FaceToMetaData(static_cast<NIBBLETYPE>(a_HeldItem.m_ItemDamage), a_ClickedBlockFace, a_CursorPosition)
))
{
return false;
}
/* This is a workaround for versions < 1.13, where the client combines a slab in the
direction of the clicked block face of a block ignoring build collision, rather than replacing said block.
Resend blocks to the client to fix the bug.
Ref.: https://forum.cuberite.org/thread-434-post-17388.html#pid17388 */
a_Player.SendBlocksAround(a_PlacePosition, 2);
return true;
}
static NIBBLETYPE FaceToMetaData(
const NIBBLETYPE a_BaseMeta,
const eBlockFace a_ClickedBlockFace,
const Vector3i a_CursorPosition
)
{
switch (a_ClickedBlockFace)
{
case BLOCK_FACE_TOP:
{
// Bottom half slab block:
return a_BaseMeta & 0x07;
}
case BLOCK_FACE_BOTTOM:
{
// Top half slab block:
return a_BaseMeta | 0x08;
}
case BLOCK_FACE_EAST:
case BLOCK_FACE_NORTH:
case BLOCK_FACE_SOUTH:
case BLOCK_FACE_WEST:
{
if (a_CursorPosition.y > 7)
{
// Cursor at top half of block, place top slab:
return a_BaseMeta | 0x08;
}
else
{
// Cursor at bottom half of block, place bottom slab:
return a_BaseMeta & 0x07;
}
}
default: UNREACHABLE("Unhandled block face");
}
}
/** Converts the single-slab blocktype to its equivalent double-slab blocktype. */
static BLOCKTYPE GetDoubleSlabType(BLOCKTYPE a_SingleSlabBlockType)
{
switch (a_SingleSlabBlockType)
{
case E_BLOCK_STONE_SLAB: return E_BLOCK_DOUBLE_STONE_SLAB;
case E_BLOCK_WOODEN_SLAB: return E_BLOCK_DOUBLE_WOODEN_SLAB;
case E_BLOCK_RED_SANDSTONE_SLAB: return E_BLOCK_DOUBLE_RED_SANDSTONE_SLAB;
case E_BLOCK_PURPUR_SLAB: return E_BLOCK_PURPUR_DOUBLE_SLAB;
}
UNREACHABLE("Unhandled slab type");
}
};
|
