/*
Minetest
-Copyright (C) 2010-2013 kwolekr, Ryan Kwolek <kwolekr@minetest.net>
+Copyright (C) 2014-2016 kwolekr, Ryan Kwolek <kwolekr@minetest.net>
+Copyright (C) 2014-2017 paramat
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
#ifndef MG_BIOME_HEADER
#define MG_BIOME_HEADER
-#include "mapgen.h"
+#include "objdef.h"
+#include "nodedef.h"
#include "noise.h"
-enum BiomeType
-{
- BIOME_TYPE_NORMAL,
- BIOME_TYPE_LIQUID,
- BIOME_TYPE_NETHER,
- BIOME_TYPE_AETHER,
- BIOME_TYPE_FLAT
-};
+class Server;
+class Settings;
+class BiomeManager;
+
+////
+//// Biome
+////
+
+typedef u8 biome_t;
-extern NoiseParams nparams_biome_def_heat;
-extern NoiseParams nparams_biome_def_humidity;
+#define BIOME_NONE ((biome_t)0)
+// TODO(hmmmm): Decide whether this is obsolete or will be used in the future
+enum BiomeType {
+ BIOMETYPE_NORMAL,
+ BIOMETYPE_LIQUID,
+ BIOMETYPE_NETHER,
+ BIOMETYPE_AETHER,
+ BIOMETYPE_FLAT,
+};
-class Biome : public GenElement {
+class Biome : public ObjDef, public NodeResolver {
public:
u32 flags;
content_t c_top;
content_t c_filler;
content_t c_stone;
+ content_t c_water_top;
content_t c_water;
+ content_t c_river_water;
+ content_t c_riverbed;
content_t c_dust;
- content_t c_dust_water;
s16 depth_top;
s16 depth_filler;
+ s16 depth_water_top;
+ s16 depth_riverbed;
- s16 height_min;
- s16 height_max;
+ s16 y_min;
+ s16 y_max;
float heat_point;
float humidity_point;
+
+ virtual void resolveNodeNames();
+};
+
+
+////
+//// BiomeGen
+////
+
+enum BiomeGenType {
+ BIOMEGEN_ORIGINAL,
+};
+
+struct BiomeParams {
+ virtual void readParams(const Settings *settings) = 0;
+ virtual void writeParams(Settings *settings) const = 0;
+ virtual ~BiomeParams() {}
+
+ s32 seed;
+};
+
+class BiomeGen {
+public:
+ virtual ~BiomeGen() {}
+ virtual BiomeGenType getType() const = 0;
+
+ // Calculates the biome at the exact position provided. This function can
+ // be called at any time, but may be less efficient than the latter methods,
+ // depending on implementation.
+ virtual Biome *calcBiomeAtPoint(v3s16 pos) const = 0;
+
+ // Computes any intermediate results needed for biome generation. Must be
+ // called before using any of: getBiomes, getBiomeAtPoint, or getBiomeAtIndex.
+ // Calling this invalidates the previous results stored in biomemap.
+ virtual void calcBiomeNoise(v3s16 pmin) = 0;
+
+ // Gets all biomes in current chunk using each corresponding element of
+ // heightmap as the y position, then stores the results by biome index in
+ // biomemap (also returned)
+ virtual biome_t *getBiomes(s16 *heightmap) = 0;
+
+ // Gets a single biome at the specified position, which must be contained
+ // in the region formed by m_pmin and (m_pmin + m_csize - 1).
+ virtual Biome *getBiomeAtPoint(v3s16 pos) const = 0;
+
+ // Same as above, but uses a raw numeric index correlating to the (x,z) position.
+ virtual Biome *getBiomeAtIndex(size_t index, s16 y) const = 0;
+
+ // Result of calcBiomes bulk computation.
+ biome_t *biomemap = nullptr;
+
+protected:
+ BiomeManager *m_bmgr = nullptr;
+ v3s16 m_pmin;
+ v3s16 m_csize;
+};
+
+
+////
+//// BiomeGen implementations
+////
+
+//
+// Original biome algorithm (Whittaker's classification + surface height)
+//
+
+struct BiomeParamsOriginal : public BiomeParams {
+ BiomeParamsOriginal() :
+ np_heat(50, 50, v3f(1000.0, 1000.0, 1000.0), 5349, 3, 0.5, 2.0),
+ np_humidity(50, 50, v3f(1000.0, 1000.0, 1000.0), 842, 3, 0.5, 2.0),
+ np_heat_blend(0, 1.5, v3f(8.0, 8.0, 8.0), 13, 2, 1.0, 2.0),
+ np_humidity_blend(0, 1.5, v3f(8.0, 8.0, 8.0), 90003, 2, 1.0, 2.0)
+ {
+ }
+
+ virtual void readParams(const Settings *settings);
+ virtual void writeParams(Settings *settings) const;
+
+ NoiseParams np_heat;
+ NoiseParams np_humidity;
+ NoiseParams np_heat_blend;
+ NoiseParams np_humidity_blend;
};
-class BiomeManager : public GenElementManager {
+class BiomeGenOriginal : public BiomeGen {
public:
- static const char *ELEMENT_TITLE;
- static const size_t ELEMENT_LIMIT = 0x100;
+ BiomeGenOriginal(BiomeManager *biomemgr,
+ BiomeParamsOriginal *params, v3s16 chunksize);
+ virtual ~BiomeGenOriginal();
+
+ BiomeGenType getType() const { return BIOMEGEN_ORIGINAL; }
+
+ Biome *calcBiomeAtPoint(v3s16 pos) const;
+ void calcBiomeNoise(v3s16 pmin);
+
+ biome_t *getBiomes(s16 *heightmap);
+ Biome *getBiomeAtPoint(v3s16 pos) const;
+ Biome *getBiomeAtIndex(size_t index, s16 y) const;
+
+ Biome *calcBiomeFromNoise(float heat, float humidity, s16 y) const;
+
+ float *heatmap;
+ float *humidmap;
- NoiseParams *np_heat;
- NoiseParams *np_humidity;
+private:
+ BiomeParamsOriginal *m_params;
+
+ Noise *noise_heat;
+ Noise *noise_humidity;
+ Noise *noise_heat_blend;
+ Noise *noise_humidity_blend;
+};
- BiomeManager(IGameDef *gamedef);
- ~BiomeManager();
- Biome *create(int btt)
+////
+//// BiomeManager
+////
+
+class BiomeManager : public ObjDefManager {
+public:
+ BiomeManager(Server *server);
+ virtual ~BiomeManager();
+
+ const char *getObjectTitle() const
+ {
+ return "biome";
+ }
+
+ static Biome *create(BiomeType type)
{
return new Biome;
}
- void clear();
+ BiomeGen *createBiomeGen(BiomeGenType type, BiomeParams *params, v3s16 chunksize)
+ {
+ switch (type) {
+ case BIOMEGEN_ORIGINAL:
+ return new BiomeGenOriginal(this,
+ (BiomeParamsOriginal *)params, chunksize);
+ default:
+ return NULL;
+ }
+ }
- void calcBiomes(s16 sx, s16 sy, float *heat_map, float *humidity_map,
- s16 *height_map, u8 *biomeid_map);
- Biome *getBiome(float heat, float humidity, s16 y);
+ static BiomeParams *createBiomeParams(BiomeGenType type)
+ {
+ switch (type) {
+ case BIOMEGEN_ORIGINAL:
+ return new BiomeParamsOriginal;
+ default:
+ return NULL;
+ }
+ }
+
+ virtual void clear();
private:
- NodeResolver *m_resolver;
+ Server *m_server;
+
};
-#endif
+#endif
projects / dragonfireclient.git / blobdiff