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
|
/*
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 "gamedef.h"
#include "nodedef.h"
#include "map.h" //for MMVManip
#include "log.h"
#include "util/numeric.h"
#include "main.h"
#include "util/mathconstants.h"
#include "porting.h"
///////////////////////////////////////////////////////////////////////////////
BiomeManager::BiomeManager(IGameDef *gamedef) :
ObjDefManager(gamedef, OBJDEF_BIOME)
{
// 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 = 0;
b->depth_water_top = 0;
b->y_min = -MAP_GENERATION_LIMIT;
b->y_max = MAP_GENERATION_LIMIT;
b->heat_point = 0.0;
b->humidity_point = 0.0;
NodeResolveInfo *nri = new NodeResolveInfo(b);
nri->nodenames.push_back("air");
nri->nodenames.push_back("air");
nri->nodenames.push_back("mapgen_stone");
nri->nodenames.push_back("mapgen_water_source");
nri->nodenames.push_back("mapgen_water_source");
nri->nodenames.push_back("air");
m_ndef->pendNodeResolve(nri);
add(b);
}
BiomeManager::~BiomeManager()
{
//if (biomecache)
// delete[] biomecache;
}
// just a PoC, obviously needs optimization later on (precalculate this)
void BiomeManager::calcBiomes(s16 sx, s16 sy, float *heat_map,
float *humidity_map, s16 *height_map, u8 *biomeid_map)
{
for (s32 i = 0; i != sx * sy; i++) {
Biome *biome = getBiome(heat_map[i], humidity_map[i], height_map[i]);
biomeid_map[i] = biome->index;
}
}
Biome *BiomeManager::getBiome(float heat, float humidity, s16 y)
{
Biome *b, *biome_closest = NULL;
float dist_min = FLT_MAX;
for (size_t i = 1; i < m_objects.size(); i++) {
b = (Biome *)m_objects[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_objects[0];
}
void BiomeManager::clear()
{
for (size_t i = 1; i < m_objects.size(); i++) {
Biome *b = (Biome *)m_objects[i];
delete b;
}
m_objects.resize(1);
}
///////////////////////////////////////////////////////////////////////////////
void Biome::resolveNodeNames(NodeResolveInfo *nri)
{
m_ndef->getIdFromResolveInfo(nri, "mapgen_dirt_with_grass", CONTENT_AIR, c_top);
m_ndef->getIdFromResolveInfo(nri, "mapgen_dirt", CONTENT_AIR, c_filler);
m_ndef->getIdFromResolveInfo(nri, "mapgen_stone", CONTENT_AIR, c_stone);
m_ndef->getIdFromResolveInfo(nri, "mapgen_water_source", CONTENT_AIR, c_water_top);
m_ndef->getIdFromResolveInfo(nri, "mapgen_water_source", CONTENT_AIR, c_water);
m_ndef->getIdFromResolveInfo(nri, "air", CONTENT_IGNORE, c_dust);
}
|
