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
|
#pragma once
#include "BlockHandler.h"
#include "../Chunk.h"
class cBlockWallSignHandler final :
public cBlockHandler
{
using Super = cBlockHandler;
public:
using Super::Super;
private:
virtual cItems ConvertToPickups(const NIBBLETYPE a_BlockMeta, const cItem * const a_Tool) const override
{
return cItem(E_ITEM_SIGN, 1, 0);
}
virtual bool CanBeAt(const cChunk & a_Chunk, const Vector3i a_Position, const NIBBLETYPE a_Meta) const override
{
auto NeighborPos = a_Position + GetOffsetBehindTheSign(a_Meta);
BLOCKTYPE NeighborType;
if (!a_Chunk.UnboundedRelGetBlockType(NeighborPos, NeighborType))
{
// The neighbor is not accessible (unloaded chunk), bail out without changing this
return true;
}
return (NeighborType == E_BLOCK_WALLSIGN) || (NeighborType == E_BLOCK_SIGN_POST) || cBlockInfo::IsSolid(NeighborType);
}
/** Returns the offset from the sign coords to the block to which the wallsign is attached, based on the wallsign's block meta.
Asserts / returns a zero vector on wrong meta. */
static Vector3i GetOffsetBehindTheSign(NIBBLETYPE a_BlockMeta)
{
switch (a_BlockMeta)
{
case 2: return Vector3i( 0, 0, 1);
case 3: return Vector3i( 0, 0, -1);
case 4: return Vector3i( 1, 0, 0);
case 5: return Vector3i(-1, 0, 0);
}
ASSERT(!"Invalid wallsign block meta");
return Vector3i();
}
virtual ColourID GetMapBaseColourID(NIBBLETYPE a_Meta) const override
{
UNUSED(a_Meta);
return 13;
}
} ;
|
