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
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
|
/*
Minetest
Copyright (C) 2010-2013 kwolekr, Ryan Kwolek <kwolekr@minetest.net>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "mg_biome.h"
#include "mg_decoration.h"
#include "emerge.h"
#include "server.h"
#include "nodedef.h"
#include "map.h" //for MMVManip
#include "util/numeric.h"
#include "porting.h"
#include "settings.h"
///////////////////////////////////////////////////////////////////////////////
BiomeManager::BiomeManager(Server *server) :
ObjDefManager(server, OBJDEF_BIOME)
{
m_server = server;
// Create default biome to be used in case none exist
Biome *b = new Biome;
b->name = "Default";
b->flags = 0;
b->depth_top = 0;
b->depth_filler = -MAX_MAP_GENERATION_LIMIT;
b->depth_water_top = 0;
b->depth_riverbed = 0;
b->y_min = -MAX_MAP_GENERATION_LIMIT;
b->y_max = MAX_MAP_GENERATION_LIMIT;
b->heat_point = 0.0;
b->humidity_point = 0.0;
b->m_nodenames.push_back("mapgen_stone");
b->m_nodenames.push_back("mapgen_stone");
b->m_nodenames.push_back("mapgen_stone");
b->m_nodenames.push_back("mapgen_water_source");
b->m_nodenames.push_back("mapgen_water_source");
b->m_nodenames.push_back("mapgen_river_water_source");
b->m_nodenames.push_back("mapgen_stone");
b->m_nodenames.push_back("ignore");
m_ndef->pendNodeResolve(b);
add(b);
}
BiomeManager::~BiomeManager()
{
}
void BiomeManager::clear()
{
EmergeManager *emerge = m_server->getEmergeManager();
// Remove all dangling references in Decorations
DecorationManager *decomgr = emerge->decomgr;
for (size_t i = 0; i != decomgr->getNumObjects(); i++) {
Decoration *deco = (Decoration *)decomgr->getRaw(i);
deco->biomes.clear();
}
// Don't delete the first biome
for (size_t i = 1; i < m_objects.size(); i++)
delete (Biome *)m_objects[i];
m_objects.resize(1);
}
////////////////////////////////////////////////////////////////////////////////
void BiomeParamsOriginal::readParams(const Settings *settings)
{
settings->getNoiseParams("mg_biome_np_heat", np_heat);
settings->getNoiseParams("mg_biome_np_heat_blend", np_heat_blend);
settings->getNoiseParams("mg_biome_np_humidity", np_humidity);
settings->getNoiseParams("mg_biome_np_humidity_blend", np_humidity_blend);
}
void BiomeParamsOriginal::writeParams(Settings *settings) const
{
settings->setNoiseParams("mg_biome_np_heat", np_heat);
settings->setNoiseParams("mg_biome_np_heat_blend", np_heat_blend);
settings->setNoiseParams("mg_biome_np_humidity", np_humidity);
settings->setNoiseParams("mg_biome_np_humidity_blend", np_humidity_blend);
}
////////////////////////////////////////////////////////////////////////////////
BiomeGenOriginal::BiomeGenOriginal(BiomeManager *biomemgr,
BiomeParamsOriginal *params, v3s16 chunksize)
{
m_bmgr = biomemgr;
m_params = params;
m_csize = chunksize;
noise_heat = new Noise(¶ms->np_heat,
params->seed, m_csize.X, m_csize.Z);
noise_humidity = new Noise(¶ms->np_humidity,
params->seed, m_csize.X, m_csize.Z);
noise_heat_blend = new Noise(¶ms->np_heat_blend,
params->seed, m_csize.X, m_csize.Z);
noise_humidity_blend = new Noise(¶ms->np_humidity_blend,
params->seed, m_csize.X, m_csize.Z);
heatmap = noise_heat->result;
humidmap = noise_humidity->result;
biomemap = new biome_t[m_csize.X * m_csize.Z];
}
BiomeGenOriginal::~BiomeGenOriginal()
{
delete []biomemap;
delete noise_heat;
delete noise_humidity;
delete noise_heat_blend;
delete noise_humidity_blend;
}
Biome *BiomeGenOriginal::calcBiomeAtPoint(v3s16 pos) const
{
float heat =
NoisePerlin2D(&m_params->np_heat, pos.X, pos.Z, m_params->seed) +
NoisePerlin2D(&m_params->np_heat_blend, pos.X, pos.Z, m_params->seed);
float humidity =
NoisePerlin2D(&m_params->np_humidity, pos.X, pos.Z, m_params->seed) +
NoisePerlin2D(&m_params->np_humidity_blend, pos.X, pos.Z, m_params->seed);
return calcBiomeFromNoise(heat, humidity, pos.Y);
}
void BiomeGenOriginal::calcBiomeNoise(v3s16 pmin)
{
m_pmin = pmin;
noise_heat->perlinMap2D(pmin.X, pmin.Z);
noise_humidity->perlinMap2D(pmin.X, pmin.Z);
noise_heat_blend->perlinMap2D(pmin.X, pmin.Z);
noise_humidity_blend->perlinMap2D(pmin.X, pmin.Z);
for (s32 i = 0; i < m_csize.X * m_csize.Z; i++) {
noise_heat->result[i] += noise_heat_blend->result[i];
noise_humidity->result[i] += noise_humidity_blend->result[i];
}
}
biome_t *BiomeGenOriginal::getBiomes(s16 *heightmap)
{
for (s32 i = 0; i != m_csize.X * m_csize.Z; i++) {
Biome *biome = calcBiomeFromNoise(
noise_heat->result[i],
noise_humidity->result[i],
heightmap[i]);
biomemap[i] = biome->index;
}
return biomemap;
}
Biome *BiomeGenOriginal::getBiomeAtPoint(v3s16 pos) const
{
return getBiomeAtIndex(
(pos.Z - m_pmin.Z) * m_csize.X + (pos.X - m_pmin.X),
pos.Y);
}
Biome *BiomeGenOriginal::getBiomeAtIndex(size_t index, s16 y) const
{
return calcBiomeFromNoise(
noise_heat->result[index],
noise_humidity->result[index],
y);
}
Biome *BiomeGenOriginal::calcBiomeFromNoise(float heat, float humidity, s16 y) const
{
Biome *b, *biome_closest = NULL;
float dist_min = FLT_MAX;
for (size_t i = 1; i < m_bmgr->getNumObjects(); i++) {
b = (Biome *)m_bmgr->getRaw(i);
if (!b || y > b->y_max || y < b->y_min)
continue;
float d_heat = heat - b->heat_point;
float d_humidity = humidity - b->humidity_point;
float dist = (d_heat * d_heat) +
(d_humidity * d_humidity);
if (dist < dist_min) {
dist_min = dist;
biome_closest = b;
}
}
return biome_closest ? biome_closest : (Biome *)m_bmgr->getRaw(BIOME_NONE);
}
////////////////////////////////////////////////////////////////////////////////
void Biome::resolveNodeNames()
{
getIdFromNrBacklog(&c_top, "mapgen_stone", CONTENT_AIR);
getIdFromNrBacklog(&c_filler, "mapgen_stone", CONTENT_AIR);
getIdFromNrBacklog(&c_stone, "mapgen_stone", CONTENT_AIR);
getIdFromNrBacklog(&c_water_top, "mapgen_water_source", CONTENT_AIR);
getIdFromNrBacklog(&c_water, "mapgen_water_source", CONTENT_AIR);
getIdFromNrBacklog(&c_river_water, "mapgen_river_water_source", CONTENT_AIR);
getIdFromNrBacklog(&c_riverbed, "mapgen_stone", CONTENT_AIR);
getIdFromNrBacklog(&c_dust, "ignore", CONTENT_IGNORE);
}
|
