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-rw-r--r--src/mapgen/mg_biome.cpp60
-rw-r--r--src/mapgen/mg_biome.h7
-rw-r--r--src/script/lua_api/l_mapgen.cpp153
-rw-r--r--src/script/lua_api/l_mapgen.h14
4 files changed, 231 insertions, 3 deletions
diff --git a/src/mapgen/mg_biome.cpp b/src/mapgen/mg_biome.cpp
index b562084e3..2273be280 100644
--- a/src/mapgen/mg_biome.cpp
+++ b/src/mapgen/mg_biome.cpp
@@ -84,8 +84,66 @@ void BiomeManager::clear()
m_objects.resize(1);
}
-////////////////////////////////////////////////////////////////////////////////
+// For BiomeGen type 'BiomeGenOriginal'
+float BiomeManager::getHeatAtPosOriginal(v3s16 pos, NoiseParams &np_heat,
+ NoiseParams &np_heat_blend, u64 seed)
+{
+ return
+ NoisePerlin2D(&np_heat, pos.X, pos.Z, seed) +
+ NoisePerlin2D(&np_heat_blend, pos.X, pos.Z, seed);
+}
+
+
+// For BiomeGen type 'BiomeGenOriginal'
+float BiomeManager::getHumidityAtPosOriginal(v3s16 pos, NoiseParams &np_humidity,
+ NoiseParams &np_humidity_blend, u64 seed)
+{
+ return
+ NoisePerlin2D(&np_humidity, pos.X, pos.Z, seed) +
+ NoisePerlin2D(&np_humidity_blend, pos.X, pos.Z, seed);
+}
+
+
+// For BiomeGen type 'BiomeGenOriginal'
+Biome *BiomeManager::getBiomeFromNoiseOriginal(float heat, float humidity, s16 y)
+{
+ Biome *biome_closest = nullptr;
+ Biome *biome_closest_blend = nullptr;
+ float dist_min = FLT_MAX;
+ float dist_min_blend = FLT_MAX;
+
+ for (size_t i = 1; i < getNumObjects(); i++) {
+ Biome *b = (Biome *)getRaw(i);
+ if (!b || y > b->y_max + b->vertical_blend || 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 (y <= b->y_max) { // Within y limits of biome b
+ if (dist < dist_min) {
+ dist_min = dist;
+ biome_closest = b;
+ }
+ } else if (dist < dist_min_blend) { // Blend area above biome b
+ dist_min_blend = dist;
+ biome_closest_blend = b;
+ }
+ }
+
+ mysrand(y + (heat - humidity) * 2);
+ if (biome_closest_blend &&
+ myrand_range(0, biome_closest_blend->vertical_blend) >=
+ y - biome_closest_blend->y_max)
+ return biome_closest_blend;
+
+ return (biome_closest) ? biome_closest : (Biome *)getRaw(BIOME_NONE);
+}
+
+
+////////////////////////////////////////////////////////////////////////////////
void BiomeParamsOriginal::readParams(const Settings *settings)
{
diff --git a/src/mapgen/mg_biome.h b/src/mapgen/mg_biome.h
index ac606e935..a2bfaf5b9 100644
--- a/src/mapgen/mg_biome.h
+++ b/src/mapgen/mg_biome.h
@@ -225,6 +225,13 @@ public:
virtual void clear();
+ // For BiomeGen type 'BiomeGenOriginal'
+ float getHeatAtPosOriginal(v3s16 pos, NoiseParams &np_heat,
+ NoiseParams &np_heat_blend, u64 seed);
+ float getHumidityAtPosOriginal(v3s16 pos, NoiseParams &np_humidity,
+ NoiseParams &np_humidity_blend, u64 seed);
+ Biome *getBiomeFromNoiseOriginal(float heat, float humidity, s16 y);
+
private:
Server *m_server;
diff --git a/src/script/lua_api/l_mapgen.cpp b/src/script/lua_api/l_mapgen.cpp
index b526111d4..db517b942 100644
--- a/src/script/lua_api/l_mapgen.cpp
+++ b/src/script/lua_api/l_mapgen.cpp
@@ -463,7 +463,7 @@ size_t get_biome_list(lua_State *L, int index,
///////////////////////////////////////////////////////////////////////////////
// get_biome_id(biomename)
-// returns the biome id used in biomemap
+// returns the biome id as used in biomemap and returned by 'get_biome_data()'
int ModApiMapgen::l_get_biome_id(lua_State *L)
{
NO_MAP_LOCK_REQUIRED;
@@ -488,6 +488,154 @@ int ModApiMapgen::l_get_biome_id(lua_State *L)
}
+// get_heat(pos)
+// returns the heat at the position
+int ModApiMapgen::l_get_heat(lua_State *L)
+{
+ NO_MAP_LOCK_REQUIRED;
+
+ v3s16 pos = read_v3s16(L, 1);
+
+ NoiseParams np_heat;
+ NoiseParams np_heat_blend;
+
+ MapSettingsManager *settingsmgr =
+ getServer(L)->getEmergeManager()->map_settings_mgr;
+
+ if (!settingsmgr->getMapSettingNoiseParams("mg_biome_np_heat",
+ &np_heat) ||
+ !settingsmgr->getMapSettingNoiseParams("mg_biome_np_heat_blend",
+ &np_heat_blend))
+ return 0;
+
+ std::string value;
+ if (!settingsmgr->getMapSetting("seed", &value))
+ return 0;
+ std::istringstream ss(value);
+ u64 seed;
+ ss >> seed;
+
+ BiomeManager *bmgr = getServer(L)->getEmergeManager()->biomemgr;
+ if (!bmgr)
+ return 0;
+
+ float heat = bmgr->getHeatAtPosOriginal(pos, np_heat, np_heat_blend, seed);
+ if (!heat)
+ return 0;
+
+ lua_pushnumber(L, heat);
+
+ return 1;
+}
+
+
+// get_humidity(pos)
+// returns the humidity at the position
+int ModApiMapgen::l_get_humidity(lua_State *L)
+{
+ NO_MAP_LOCK_REQUIRED;
+
+ v3s16 pos = read_v3s16(L, 1);
+
+ NoiseParams np_humidity;
+ NoiseParams np_humidity_blend;
+
+ MapSettingsManager *settingsmgr =
+ getServer(L)->getEmergeManager()->map_settings_mgr;
+
+ if (!settingsmgr->getMapSettingNoiseParams("mg_biome_np_humidity",
+ &np_humidity) ||
+ !settingsmgr->getMapSettingNoiseParams("mg_biome_np_humidity_blend",
+ &np_humidity_blend))
+ return 0;
+
+ std::string value;
+ if (!settingsmgr->getMapSetting("seed", &value))
+ return 0;
+ std::istringstream ss(value);
+ u64 seed;
+ ss >> seed;
+
+ BiomeManager *bmgr = getServer(L)->getEmergeManager()->biomemgr;
+ if (!bmgr)
+ return 0;
+
+ float humidity = bmgr->getHumidityAtPosOriginal(pos, np_humidity,
+ np_humidity_blend, seed);
+ if (!humidity)
+ return 0;
+
+ lua_pushnumber(L, humidity);
+
+ return 1;
+}
+
+
+// get_biome_data(pos)
+// returns a table containing the biome id, heat and humidity at the position
+int ModApiMapgen::l_get_biome_data(lua_State *L)
+{
+ NO_MAP_LOCK_REQUIRED;
+
+ v3s16 pos = read_v3s16(L, 1);
+
+ NoiseParams np_heat;
+ NoiseParams np_heat_blend;
+ NoiseParams np_humidity;
+ NoiseParams np_humidity_blend;
+
+ MapSettingsManager *settingsmgr =
+ getServer(L)->getEmergeManager()->map_settings_mgr;
+
+ if (!settingsmgr->getMapSettingNoiseParams("mg_biome_np_heat",
+ &np_heat) ||
+ !settingsmgr->getMapSettingNoiseParams("mg_biome_np_heat_blend",
+ &np_heat_blend) ||
+ !settingsmgr->getMapSettingNoiseParams("mg_biome_np_humidity",
+ &np_humidity) ||
+ !settingsmgr->getMapSettingNoiseParams("mg_biome_np_humidity_blend",
+ &np_humidity_blend))
+ return 0;
+
+ std::string value;
+ if (!settingsmgr->getMapSetting("seed", &value))
+ return 0;
+ std::istringstream ss(value);
+ u64 seed;
+ ss >> seed;
+
+ BiomeManager *bmgr = getServer(L)->getEmergeManager()->biomemgr;
+ if (!bmgr)
+ return 0;
+
+ float heat = bmgr->getHeatAtPosOriginal(pos, np_heat, np_heat_blend, seed);
+ if (!heat)
+ return 0;
+
+ float humidity = bmgr->getHumidityAtPosOriginal(pos, np_humidity,
+ np_humidity_blend, seed);
+ if (!humidity)
+ return 0;
+
+ Biome *biome = (Biome *)bmgr->getBiomeFromNoiseOriginal(heat, humidity, pos.Y);
+ if (!biome || biome->index == OBJDEF_INVALID_INDEX)
+ return 0;
+
+ lua_newtable(L);
+
+ lua_pushinteger(L, biome->index);
+ lua_setfield(L, -2, "biome");
+
+ lua_pushnumber(L, heat);
+ lua_setfield(L, -2, "heat");
+
+ lua_pushnumber(L, humidity);
+ lua_setfield(L, -2, "humidity");
+
+ return 1;
+}
+
+
// get_mapgen_object(objectname)
// returns the requested object used during map generation
int ModApiMapgen::l_get_mapgen_object(lua_State *L)
@@ -1520,6 +1668,9 @@ int ModApiMapgen::l_serialize_schematic(lua_State *L)
void ModApiMapgen::Initialize(lua_State *L, int top)
{
API_FCT(get_biome_id);
+ API_FCT(get_heat);
+ API_FCT(get_humidity);
+ API_FCT(get_biome_data);
API_FCT(get_mapgen_object);
API_FCT(get_mapgen_params);
diff --git a/src/script/lua_api/l_mapgen.h b/src/script/lua_api/l_mapgen.h
index 89b825be2..f6a821b4e 100644
--- a/src/script/lua_api/l_mapgen.h
+++ b/src/script/lua_api/l_mapgen.h
@@ -25,9 +25,21 @@ class ModApiMapgen : public ModApiBase
{
private:
// get_biome_id(biomename)
- // returns the biome id used in biomemap
+ // returns the biome id as used in biomemap and returned by 'get_biome_data()'
static int l_get_biome_id(lua_State *L);
+ // get_heat(pos)
+ // returns the heat at the position
+ static int l_get_heat(lua_State *L);
+
+ // get_humidity(pos)
+ // returns the humidity at the position
+ static int l_get_humidity(lua_State *L);
+
+ // get_biome_data(pos)
+ // returns a table containing the biome id, heat and humidity at the position
+ static int l_get_biome_data(lua_State *L);
+
// get_mapgen_object(objectname)
// returns the requested object used during map generation
static int l_get_mapgen_object(lua_State *L);
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-06 00:58:33 +0000