Biomes: Make biome heat and humidity noise parameters user-configurable

src/emerge.cpp

@@ -363,6 +363,8 @@ void EmergeManager::loadParamsFromSettings(Settings *settings) {
 	settings->getS16NoEx("water_level",  params.water_level);
 	settings->getS16NoEx("chunksize",    params.chunksize);
 	settings->getFlagStrNoEx("mg_flags", params.flags, flagdesc_mapgen);
+	settings->getNoiseParams("mg_biome_np_heat",     params.np_biome_heat);
+	settings->getNoiseParams("mg_biome_np_humidity", params.np_biome_humidity);
 
 	delete params.sparams;
 	params.sparams = createMapgenParams(params.mg_name);
@@ -377,6 +379,8 @@ void EmergeManager::saveParamsToSettings(Settings *settings) {
 	settings->setS16("water_level",  params.water_level);
 	settings->setS16("chunksize",    params.chunksize);
 	settings->setFlagStr("mg_flags", params.flags, flagdesc_mapgen, (u32)-1);
+	settings->setNoiseParams("mg_biome_np_heat",     params.np_biome_heat);
+	settings->setNoiseParams("mg_biome_np_humidity", params.np_biome_humidity);
 
 	if (params.sparams)
 		params.sparams->writeParams(settings);

src/mapgen.h

@@ -20,6 +20,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #ifndef MAPGEN_HEADER
 #define MAPGEN_HEADER
 
+#include "noise.h"
 #include "nodedef.h"
 #include "mapnode.h"
 #include "util/string.h"
@@ -107,6 +108,9 @@ struct MapgenParams {
 	s16 water_level;
 	u32 flags;
 
+	NoiseParams np_biome_heat;
+	NoiseParams np_biome_humidity;
+
 	MapgenSpecificParams *sparams;
 
 	MapgenParams()
@@ -117,6 +121,8 @@ struct MapgenParams {
 		chunksize   = 5;
 		flags       = MG_TREES | MG_CAVES | MG_LIGHT;
 		sparams     = NULL;
+		np_biome_heat     = NoiseParams(50, 50, v3f(500.0, 500.0, 500.0), 5349, 3, 0.70, 2.0);
+		np_biome_humidity = NoiseParams(50, 50, v3f(500.0, 500.0, 500.0), 842, 3, 0.55, 2.0);
 	}
 };
 

src/mapgen_v5.cpp

@@ -77,8 +77,8 @@ MapgenV5::MapgenV5(int mapgenid, MapgenParams *params, EmergeManager *emerge)
 	noise_wetness      = new Noise(&sp->np_wetness, seed, csize.X, csize.Y + 2, csize.Z);
 
 	// Biome noise
-	noise_heat         = new Noise(bmgr->np_heat,     seed, csize.X, csize.Z);
+	noise_heat         = new Noise(&params->np_biome_heat,     seed, csize.X, csize.Z);
-	noise_humidity     = new Noise(bmgr->np_humidity, seed, csize.X, csize.Z);
+	noise_humidity     = new Noise(&params->np_biome_humidity, seed, csize.X, csize.Z);
 
 	//// Resolve nodes to be used
 	INodeDefManager *ndef = emerge->ndef;

src/mapgen_v7.cpp

@@ -81,8 +81,8 @@ MapgenV7::MapgenV7(int mapgenid, MapgenParams *params, EmergeManager *emerge)
 	noise_ridge    = new Noise(&sp->np_ridge,    seed, csize.X, csize.Y, csize.Z);
 
 	//// Biome noise
-	noise_heat     = new Noise(bmgr->np_heat,     seed, csize.X, csize.Z);
+	noise_heat     = new Noise(&params->np_biome_heat,     seed, csize.X, csize.Z);
-	noise_humidity = new Noise(bmgr->np_humidity, seed, csize.X, csize.Z);
+	noise_humidity = new Noise(&params->np_biome_humidity, seed, csize.X, csize.Z);
 
 	//// Resolve nodes to be used
 	INodeDefManager *ndef = emerge->ndef;
@@ -305,8 +305,8 @@ void MapgenV7::calculateNoise() {
 
 
 Biome *MapgenV7::getBiomeAtPoint(v3s16 p) {
-	float heat      = NoisePerlin2D(bmgr->np_heat, p.X, p.Z, seed);
+	float heat      = NoisePerlin2D(noise_heat->np, p.X, p.Z, seed);
-	float humidity  = NoisePerlin2D(bmgr->np_humidity, p.X, p.Z, seed);
+	float humidity  = NoisePerlin2D(noise_humidity->np, p.X, p.Z, seed);
 	s16 groundlevel = baseTerrainLevelAtPoint(p.X, p.Z);
 
 	return bmgr->getBiome(heat, humidity, groundlevel);

src/mg_biome.cpp

@@ -29,17 +29,12 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 
 const char *BiomeManager::ELEMENT_TITLE = "biome";
 
-NoiseParams nparams_biome_def_heat(50, 50, v3f(500.0, 500.0, 500.0), 5349, 3, 0.70, 2.0);
-NoiseParams nparams_biome_def_humidity(50, 50, v3f(500.0, 500.0, 500.0), 842, 3, 0.55, 2.0);
-
 
 ///////////////////////////////////////////////////////////////////////////////
 
 BiomeManager::BiomeManager(IGameDef *gamedef)
 {
 	m_resolver  = gamedef->getNodeDefManager()->getResolver();
-	np_heat     = &nparams_biome_def_heat;
-	np_humidity = &nparams_biome_def_humidity;
 
 	// Create default biome to be used in case none exist
 	Biome *b = new Biome;

src/mg_biome.h

@@ -21,7 +21,8 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #define MG_BIOME_HEADER
 
 #include "mapgen.h"
-#include "noise.h"
+
+struct NoiseParams;
 
 enum BiomeType
 {
@@ -32,10 +33,6 @@ enum BiomeType
 	BIOME_TYPE_FLAT
 };
 
-extern NoiseParams nparams_biome_def_heat;
-extern NoiseParams nparams_biome_def_humidity;
-
-
 class Biome : public GenElement {
 public:
 	u32 flags;
@@ -61,9 +58,6 @@ public:
 	static const char *ELEMENT_TITLE;
 	static const size_t ELEMENT_LIMIT = 0x100;
 
-	NoiseParams *np_heat;
-	NoiseParams *np_humidity;
-
 	BiomeManager(IGameDef *gamedef);
 	~BiomeManager();