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
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
|
#pragma once
#include "BlockHandler.h"
#include "../Chunk.h"
#include "MetaRotator.h"
class cBlockTorchHandler :
public cMetaRotator<cBlockHandler, 0x7, 0x4, 0x1, 0x3, 0x2>
{
public:
cBlockTorchHandler(BLOCKTYPE a_BlockType)
: cMetaRotator<cBlockHandler, 0x7, 0x4, 0x1, 0x3, 0x2>(a_BlockType)
{
}
virtual bool GetPlacementBlockTypeMeta(
cChunkInterface & a_ChunkInterface, cPlayer * a_Player,
int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_BlockFace,
int a_CursorX, int a_CursorY, int a_CursorZ,
BLOCKTYPE & a_BlockType, NIBBLETYPE & a_BlockMeta
) override
{
// Find proper placement of torch
if ((a_BlockFace == BLOCK_FACE_TOP) || (a_BlockFace == BLOCK_FACE_BOTTOM))
{
a_BlockFace = FindSuitableFace(a_ChunkInterface, a_BlockX, a_BlockY, a_BlockZ); // Top or bottom faces clicked, find a suitable face
if (a_BlockFace == BLOCK_FACE_NONE)
{
// Client wouldn't have sent anything anyway, but whatever
return false;
}
}
else
{
// Not top or bottom faces, try to preserve whatever face was clicked
AddFaceDirection(a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, true); // Set to clicked block
if (!CanBePlacedOn(a_ChunkInterface.GetBlock(a_BlockX, a_BlockY, a_BlockZ), a_BlockFace))
{
AddFaceDirection(a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, false); // Reset to torch block
// Torch couldn't be placed on whatever face was clicked, last ditch resort - find another face
a_BlockFace = FindSuitableFace(a_ChunkInterface, a_BlockX, a_BlockY, a_BlockZ);
if (a_BlockFace == BLOCK_FACE_NONE)
{
return false;
}
}
}
a_BlockType = m_BlockType;
a_BlockMeta = DirectionToMetaData(a_BlockFace);
return true;
}
inline static NIBBLETYPE DirectionToMetaData(eBlockFace a_Direction)
{
switch (a_Direction)
{
case BLOCK_FACE_BOTTOM: ASSERT(!"Shouldn't be getting this face"); return 0;
case BLOCK_FACE_TOP: return E_META_TORCH_FLOOR;
case BLOCK_FACE_EAST: return E_META_TORCH_EAST;
case BLOCK_FACE_WEST: return E_META_TORCH_WEST;
case BLOCK_FACE_NORTH: return E_META_TORCH_NORTH;
case BLOCK_FACE_SOUTH: return E_META_TORCH_SOUTH;
default:
{
ASSERT(!"Unhandled torch direction!");
break;
}
};
return 0x0;
}
inline static eBlockFace MetaDataToDirection(NIBBLETYPE a_MetaData)
{
switch (a_MetaData)
{
case 0: return BLOCK_FACE_TOP; // By default, the torches stand on the ground
case E_META_TORCH_FLOOR: return BLOCK_FACE_TOP;
case E_META_TORCH_EAST: return BLOCK_FACE_EAST;
case E_META_TORCH_WEST: return BLOCK_FACE_WEST;
case E_META_TORCH_NORTH: return BLOCK_FACE_NORTH;
case E_META_TORCH_SOUTH: return BLOCK_FACE_SOUTH;
default:
{
ASSERT(!"Unhandled torch metadata");
break;
}
}
return BLOCK_FACE_TOP;
}
static bool CanBePlacedOn(BLOCKTYPE a_BlockType, eBlockFace a_BlockFace)
{
if (!cBlockInfo::FullyOccupiesVoxel(a_BlockType))
{
return (a_BlockFace == BLOCK_FACE_TOP); // Allow placement only when torch upright (for glass, etc.); exceptions won't even be sent by client, no need to handle
}
else
{
return true;
}
}
/// Finds a suitable face to place the torch, returning BLOCK_FACE_NONE on failure
static eBlockFace FindSuitableFace(cChunkInterface & a_ChunkInterface, int a_BlockX, int a_BlockY, int a_BlockZ)
{
for (int i = BLOCK_FACE_YM; i <= BLOCK_FACE_XP; i++) // Loop through all directions
{
eBlockFace Face = static_cast<eBlockFace>(i);
AddFaceDirection(a_BlockX, a_BlockY, a_BlockZ, Face, true);
BLOCKTYPE BlockInQuestion = a_ChunkInterface.GetBlock(a_BlockX, a_BlockY, a_BlockZ);
// If on a block that can only hold a torch if torch is standing on it, return that face
if (
(
(BlockInQuestion == E_BLOCK_GLASS) ||
(BlockInQuestion == E_BLOCK_FENCE) ||
(BlockInQuestion == E_BLOCK_NETHER_BRICK_FENCE) ||
(BlockInQuestion == E_BLOCK_COBBLESTONE_WALL) ||
(BlockInQuestion == E_BLOCK_STONE_SLAB) ||
(BlockInQuestion == E_BLOCK_WOODEN_SLAB)
) &&
(Face == BLOCK_FACE_TOP)
)
{
return Face;
}
else if (cBlockInfo::FullyOccupiesVoxel(BlockInQuestion) && (i != BLOCK_FACE_BOTTOM))
{
// Otherwise, if block in that direction is torch placeable and we haven't gotten to it via the bottom face, return that face
return Face;
}
else
{
// Reset coords in preparation for next iteration
AddFaceDirection(a_BlockX, a_BlockY, a_BlockZ, Face, false);
}
}
return BLOCK_FACE_NONE;
}
virtual bool CanBeAt(cChunkInterface & a_ChunkInterface, int a_RelX, int a_RelY, int a_RelZ, const cChunk & a_Chunk) override
{
eBlockFace Face = MetaDataToDirection(a_Chunk.GetMeta(a_RelX, a_RelY, a_RelZ));
AddFaceDirection(a_RelX, a_RelY, a_RelZ, Face, true);
BLOCKTYPE BlockInQuestion;
a_Chunk.UnboundedRelGetBlockType(a_RelX, a_RelY, a_RelZ, BlockInQuestion);
if (
(BlockInQuestion == E_BLOCK_GLASS) ||
(BlockInQuestion == E_BLOCK_STAINED_GLASS) ||
(BlockInQuestion == E_BLOCK_FENCE) ||
(BlockInQuestion == E_BLOCK_SOULSAND) ||
(BlockInQuestion == E_BLOCK_MOB_SPAWNER) ||
(BlockInQuestion == E_BLOCK_END_PORTAL_FRAME) || // Actual vanilla behaviour
(BlockInQuestion == E_BLOCK_NETHER_BRICK_FENCE) ||
(BlockInQuestion == E_BLOCK_COBBLESTONE_WALL) ||
(BlockInQuestion == E_BLOCK_STONE_SLAB) ||
(BlockInQuestion == E_BLOCK_WOODEN_SLAB)
)
{
// Torches can be placed on tops of glass and fences, despite them being 'untorcheable'
// No need to check for upright orientation, it was done when the torch was placed
return true;
}
else if (!cBlockInfo::FullyOccupiesVoxel(BlockInQuestion))
{
return false;
}
else
{
return true;
}
}
virtual void ConvertToPickups(cItems & a_Pickups, NIBBLETYPE a_BlockMeta) override
{
// Always drop meta = 0
a_Pickups.push_back(cItem(m_BlockType, 1, 0));
}
} ;
|
