3 Copyright (C) 2010-2013 kwolekr, Ryan Kwolek <kwolekr@minetest.net>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU Lesser General Public License as published by
7 the Free Software Foundation; either version 2.1 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
23 #include "map.h" //for MMVManip
25 #include "util/numeric.h"
26 #include "util/mathconstants.h"
30 ///////////////////////////////////////////////////////////////////////////////
33 BiomeManager::BiomeManager(IGameDef *gamedef) :
34 ObjDefManager(gamedef, OBJDEF_BIOME)
36 // Create default biome to be used in case none exist
43 b->depth_water_top = 0;
44 b->y_min = -MAP_GENERATION_LIMIT;
45 b->y_max = MAP_GENERATION_LIMIT;
47 b->humidity_point = 0.0;
49 b->m_nodenames.push_back("air");
50 b->m_nodenames.push_back("air");
51 b->m_nodenames.push_back("mapgen_stone");
52 b->m_nodenames.push_back("mapgen_water_source");
53 b->m_nodenames.push_back("mapgen_water_source");
54 b->m_nodenames.push_back("air");
55 m_ndef->pendNodeResolve(b, NODE_RESOLVE_DEFERRED);
62 BiomeManager::~BiomeManager()
65 // delete[] biomecache;
70 // just a PoC, obviously needs optimization later on (precalculate this)
71 void BiomeManager::calcBiomes(s16 sx, s16 sy, float *heat_map,
72 float *humidity_map, s16 *height_map, u8 *biomeid_map)
74 for (s32 i = 0; i != sx * sy; i++) {
75 Biome *biome = getBiome(heat_map[i], humidity_map[i], height_map[i]);
76 biomeid_map[i] = biome->index;
81 Biome *BiomeManager::getBiome(float heat, float humidity, s16 y)
83 Biome *b, *biome_closest = NULL;
84 float dist_min = FLT_MAX;
86 for (size_t i = 1; i < m_objects.size(); i++) {
87 b = (Biome *)m_objects[i];
88 if (!b || y > b->y_max || y < b->y_min)
91 float d_heat = heat - b->heat_point;
92 float d_humidity = humidity - b->humidity_point;
93 float dist = (d_heat * d_heat) +
94 (d_humidity * d_humidity);
95 if (dist < dist_min) {
101 return biome_closest ? biome_closest : (Biome *)m_objects[0];
104 void BiomeManager::clear()
107 for (size_t i = 1; i < m_objects.size(); i++) {
108 Biome *b = (Biome *)m_objects[i];
116 ///////////////////////////////////////////////////////////////////////////////
119 void Biome::resolveNodeNames()
121 getIdFromNrBacklog(&c_top, "mapgen_dirt_with_grass", CONTENT_AIR);
122 getIdFromNrBacklog(&c_filler, "mapgen_dirt", CONTENT_AIR);
123 getIdFromNrBacklog(&c_stone, "mapgen_stone", CONTENT_AIR);
124 getIdFromNrBacklog(&c_water_top, "mapgen_water_source", CONTENT_AIR);
125 getIdFromNrBacklog(&c_water, "mapgen_water_source", CONTENT_AIR);
126 getIdFromNrBacklog(&c_dust, "air", CONTENT_IGNORE);