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
|
#pragma once
#include "BlockPlant.h"
#include "../BlockInfo.h"
class cBlockCactusHandler :
public cClearMetaOnDrop<cBlockPlant<false>>
{
using super = cClearMetaOnDrop<cBlockPlant<false>>;
public:
cBlockCactusHandler(BLOCKTYPE a_BlockType):
super(a_BlockType)
{
}
virtual bool CanBeAt(cChunkInterface & a_ChunkInterface, int a_RelX, int a_RelY, int a_RelZ, const cChunk & a_Chunk) override
{
if (a_RelY <= 0)
{
return false;
}
BLOCKTYPE Surface = a_Chunk.GetBlock(a_RelX, a_RelY - 1, a_RelZ);
if ((Surface != E_BLOCK_SAND) && (Surface != E_BLOCK_CACTUS))
{
// Cactus can only be placed on sand and itself
return false;
}
// Check surroundings. Cacti may ONLY be surrounded by non-solid blocks
static const struct
{
int x, z;
} Coords[] =
{
{-1, 0},
{ 1, 0},
{ 0, -1},
{ 0, 1},
} ;
for (size_t i = 0; i < ARRAYCOUNT(Coords); i++)
{
BLOCKTYPE BlockType;
NIBBLETYPE BlockMeta;
if (
a_Chunk.UnboundedRelGetBlock(a_RelX + Coords[i].x, a_RelY, a_RelZ + Coords[i].z, BlockType, BlockMeta) &&
(
cBlockInfo::IsSolid(BlockType) ||
(BlockType == E_BLOCK_LAVA) ||
(BlockType == E_BLOCK_STATIONARY_LAVA)
)
)
{
return false;
}
} // for i - Coords[]
return true;
}
virtual ColourID GetMapBaseColourID(NIBBLETYPE a_Meta) override
{
UNUSED(a_Meta);
return 7;
}
virtual int Grow(cChunk & a_Chunk, Vector3i a_RelPos, int a_NumStages = 1) override
{
// Check the total height of the cacti blocks here:
int top = a_RelPos.y + 1;
while (
(top < cChunkDef::Height) &&
(a_Chunk.GetBlock({a_RelPos.x, top, a_RelPos.z}) == E_BLOCK_CACTUS)
)
{
++top;
}
int bottom = a_RelPos.y - 1;
while (
(bottom > 0) &&
(a_Chunk.GetBlock({a_RelPos.x, bottom, a_RelPos.z}) == E_BLOCK_CACTUS)
)
{
--bottom;
}
// Refuse if already too high:
auto numToGrow = std::min(a_NumStages, a_Chunk.GetWorld()->GetMaxCactusHeight() + 1 - (top - bottom));
if (numToGrow <= 0)
{
return 0;
}
BLOCKTYPE blockType;
for (int i = 0; i < numToGrow; ++i)
{
Vector3i pos(a_RelPos.x, top + i, a_RelPos.z);
if (!a_Chunk.UnboundedRelGetBlockType(pos, blockType) || (blockType != E_BLOCK_AIR))
{
// Cannot grow there
return i;
}
a_Chunk.UnboundedRelFastSetBlock(pos, E_BLOCK_CACTUS, 0);
// Check surroundings. Cacti may ONLY be surrounded by non-solid blocks; if they aren't, drop as pickup and bail out the growing
static const Vector3i neighborOffsets[] =
{
{-1, 0, 0},
{ 1, 0, 0},
{ 0, 0, -1},
{ 0, 0, 1},
} ;
for (const auto & ofs: neighborOffsets)
{
if (
a_Chunk.UnboundedRelGetBlockType(pos + ofs, blockType) &&
(
cBlockInfo::IsSolid(blockType) ||
(blockType == E_BLOCK_LAVA) ||
(blockType == E_BLOCK_STATIONARY_LAVA)
)
)
{
// Remove the cactus
auto absPos = a_Chunk.RelativeToAbsolute(pos);
a_Chunk.GetWorld()->DropBlockAsPickups(absPos);
return i + 1;
}
} // for neighbor
} // for i - numToGrow
return numToGrow;
}
protected:
virtual PlantAction CanGrow(cChunk & a_Chunk, Vector3i a_RelPos) override
{
// Only allow growing if there's an air block above:
if (((a_RelPos.y + 1) < cChunkDef::Height) && (a_Chunk.GetBlock(a_RelPos.addedY(1)) == E_BLOCK_AIR))
{
return super::CanGrow(a_Chunk, a_RelPos);
}
return paStay;
}
} ;
|
