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l_mapgen.cpp
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l_mapgen.cpp
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/*
Minetest
Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
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 "lua_api/l_mapgen.h"
#include "lua_api/l_internal.h"
#include "lua_api/l_vmanip.h"
#include "common/c_converter.h"
#include "common/c_content.h"
#include "cpp_api/s_security.h"
#include "util/serialize.h"
#include "server.h"
#include "environment.h"
#include "emerge_internal.h"
#include "mapgen/mg_biome.h"
#include "mapgen/mg_ore.h"
#include "mapgen/mg_decoration.h"
#include "mapgen/mg_schematic.h"
#include "mapgen/mapgen_v5.h"
#include "mapgen/mapgen_v7.h"
#include "mapgen/treegen.h"
#include "filesys.h"
#include "settings.h"
#include "log.h"
struct EnumString ModApiMapgen::es_BiomeTerrainType[] =
{
{BIOMETYPE_NORMAL, "normal"},
{0, NULL},
};
struct EnumString ModApiMapgen::es_DecorationType[] =
{
{DECO_SIMPLE, "simple"},
{DECO_SCHEMATIC, "schematic"},
{DECO_LSYSTEM, "lsystem"},
{0, NULL},
};
struct EnumString ModApiMapgen::es_MapgenObject[] =
{
{MGOBJ_VMANIP, "voxelmanip"},
{MGOBJ_HEIGHTMAP, "heightmap"},
{MGOBJ_BIOMEMAP, "biomemap"},
{MGOBJ_HEATMAP, "heatmap"},
{MGOBJ_HUMIDMAP, "humiditymap"},
{MGOBJ_GENNOTIFY, "gennotify"},
{0, NULL},
};
struct EnumString ModApiMapgen::es_OreType[] =
{
{ORE_SCATTER, "scatter"},
{ORE_SHEET, "sheet"},
{ORE_PUFF, "puff"},
{ORE_BLOB, "blob"},
{ORE_VEIN, "vein"},
{ORE_STRATUM, "stratum"},
{0, NULL},
};
struct EnumString ModApiMapgen::es_Rotation[] =
{
{ROTATE_0, "0"},
{ROTATE_90, "90"},
{ROTATE_180, "180"},
{ROTATE_270, "270"},
{ROTATE_RAND, "random"},
{0, NULL},
};
struct EnumString ModApiMapgen::es_SchematicFormatType[] =
{
{SCHEM_FMT_HANDLE, "handle"},
{SCHEM_FMT_MTS, "mts"},
{SCHEM_FMT_LUA, "lua"},
{0, NULL},
};
ObjDef *get_objdef(lua_State *L, int index, const ObjDefManager *objmgr);
Biome *get_or_load_biome(lua_State *L, int index,
BiomeManager *biomemgr);
Biome *read_biome_def(lua_State *L, int index, const NodeDefManager *ndef);
size_t get_biome_list(lua_State *L, int index,
BiomeManager *biomemgr, std::unordered_set<biome_t> *biome_id_list);
Schematic *get_or_load_schematic(lua_State *L, int index,
SchematicManager *schemmgr, StringMap *replace_names);
Schematic *load_schematic(lua_State *L, int index, const NodeDefManager *ndef,
StringMap *replace_names);
Schematic *load_schematic_from_def(lua_State *L, int index,
const NodeDefManager *ndef, StringMap *replace_names);
bool read_schematic_def(lua_State *L, int index,
Schematic *schem, std::vector<std::string> *names);
bool read_deco_simple(lua_State *L, DecoSimple *deco);
bool read_deco_schematic(lua_State *L, SchematicManager *schemmgr, DecoSchematic *deco);
bool read_deco_lsystem(lua_State *L, const NodeDefManager *ndef, DecoLSystem *deco);
///////////////////////////////////////////////////////////////////////////////
ObjDef *get_objdef(lua_State *L, int index, const ObjDefManager *objmgr)
{
if (index < 0)
index = lua_gettop(L) + 1 + index;
// If a number, assume this is a handle to an object def
if (lua_isnumber(L, index))
return objmgr->get(lua_tointeger(L, index));
// If a string, assume a name is given instead
if (lua_isstring(L, index))
return objmgr->getByName(lua_tostring(L, index));
return NULL;
}
///////////////////////////////////////////////////////////////////////////////
Schematic *get_or_load_schematic(lua_State *L, int index,
SchematicManager *schemmgr, StringMap *replace_names)
{
if (index < 0)
index = lua_gettop(L) + 1 + index;
Schematic *schem = (Schematic *)get_objdef(L, index, schemmgr);
if (schem)
return schem;
schem = load_schematic(L, index, schemmgr->getNodeDef(),
replace_names);
if (!schem)
return NULL;
if (schemmgr->add(schem) == OBJDEF_INVALID_HANDLE) {
delete schem;
return NULL;
}
return schem;
}
Schematic *load_schematic(lua_State *L, int index, const NodeDefManager *ndef,
StringMap *replace_names)
{
if (index < 0)
index = lua_gettop(L) + 1 + index;
Schematic *schem = NULL;
if (lua_istable(L, index)) {
schem = load_schematic_from_def(L, index, ndef,
replace_names);
if (!schem) {
delete schem;
return NULL;
}
} else if (lua_isnumber(L, index)) {
return NULL;
} else if (lua_isstring(L, index)) {
schem = SchematicManager::create(SCHEMATIC_NORMAL);
std::string filepath = lua_tostring(L, index);
if (!fs::IsPathAbsolute(filepath))
filepath = ModApiBase::getCurrentModPath(L) + DIR_DELIM + filepath;
if (!schem->loadSchematicFromFile(filepath, ndef,
replace_names)) {
delete schem;
return NULL;
}
}
return schem;
}
Schematic *load_schematic_from_def(lua_State *L, int index,
const NodeDefManager *ndef, StringMap *replace_names)
{
Schematic *schem = SchematicManager::create(SCHEMATIC_NORMAL);
if (!read_schematic_def(L, index, schem, &schem->m_nodenames)) {
delete schem;
return NULL;
}
size_t num_nodes = schem->m_nodenames.size();
schem->m_nnlistsizes.push_back(num_nodes);
if (replace_names) {
for (size_t i = 0; i != num_nodes; i++) {
StringMap::iterator it = replace_names->find(schem->m_nodenames[i]);
if (it != replace_names->end())
schem->m_nodenames[i] = it->second;
}
}
if (ndef)
ndef->pendNodeResolve(schem);
return schem;
}
bool read_schematic_def(lua_State *L, int index,
Schematic *schem, std::vector<std::string> *names)
{
if (!lua_istable(L, index))
return false;
//// Get schematic size
lua_getfield(L, index, "size");
v3s16 size = check_v3s16(L, -1);
lua_pop(L, 1);
schem->size = size;
//// Get schematic data
lua_getfield(L, index, "data");
luaL_checktype(L, -1, LUA_TTABLE);
u32 numnodes = size.X * size.Y * size.Z;
schem->schemdata = new MapNode[numnodes];
size_t names_base = names->size();
std::unordered_map<std::string, content_t> name_id_map;
u32 i = 0;
for (lua_pushnil(L); lua_next(L, -2); i++, lua_pop(L, 1)) {
if (i >= numnodes)
continue;
//// Read name
std::string name;
if (!getstringfield(L, -1, "name", name))
throw LuaError("Schematic data definition with missing name field");
//// Read param1/prob
u8 param1;
if (!getintfield(L, -1, "param1", param1) &&
!getintfield(L, -1, "prob", param1))
param1 = MTSCHEM_PROB_ALWAYS_OLD;
//// Read param2
u8 param2 = getintfield_default(L, -1, "param2", 0);
//// Find or add new nodename-to-ID mapping
std::unordered_map<std::string, content_t>::iterator it = name_id_map.find(name);
content_t name_index;
if (it != name_id_map.end()) {
name_index = it->second;
} else {
name_index = names->size() - names_base;
name_id_map[name] = name_index;
names->push_back(name);
}
//// Perform probability/force_place fixup on param1
param1 >>= 1;
if (getboolfield_default(L, -1, "force_place", false))
param1 |= MTSCHEM_FORCE_PLACE;
//// Actually set the node in the schematic
schem->schemdata[i] = MapNode(name_index, param1, param2);
}
if (i != numnodes) {
errorstream << "read_schematic_def: incorrect number of "
"nodes provided in raw schematic data (got " << i <<
", expected " << numnodes << ")." << std::endl;
return false;
}
//// Get Y-slice probability values (if present)
schem->slice_probs = new u8[size.Y];
for (i = 0; i != (u32) size.Y; i++)
schem->slice_probs[i] = MTSCHEM_PROB_ALWAYS;
lua_getfield(L, index, "yslice_prob");
if (lua_istable(L, -1)) {
for (lua_pushnil(L); lua_next(L, -2); lua_pop(L, 1)) {
u16 ypos;
if (!getintfield(L, -1, "ypos", ypos) || (ypos >= size.Y) ||
!getintfield(L, -1, "prob", schem->slice_probs[ypos]))
continue;
schem->slice_probs[ypos] >>= 1;
}
}
return true;
}
void read_schematic_replacements(lua_State *L, int index, StringMap *replace_names)
{
if (index < 0)
index = lua_gettop(L) + 1 + index;
lua_pushnil(L);
while (lua_next(L, index)) {
std::string replace_from;
std::string replace_to;
if (lua_istable(L, -1)) { // Old {{"x", "y"}, ...} format
lua_rawgeti(L, -1, 1);
if (!lua_isstring(L, -1))
throw LuaError("schematics: replace_from field is not a string");
replace_from = lua_tostring(L, -1);
lua_pop(L, 1);
lua_rawgeti(L, -1, 2);
if (!lua_isstring(L, -1))
throw LuaError("schematics: replace_to field is not a string");
replace_to = lua_tostring(L, -1);
lua_pop(L, 1);
} else { // New {x = "y", ...} format
if (!lua_isstring(L, -2))
throw LuaError("schematics: replace_from field is not a string");
replace_from = lua_tostring(L, -2);
if (!lua_isstring(L, -1))
throw LuaError("schematics: replace_to field is not a string");
replace_to = lua_tostring(L, -1);
}
replace_names->insert(std::make_pair(replace_from, replace_to));
lua_pop(L, 1);
}
}
///////////////////////////////////////////////////////////////////////////////
Biome *get_or_load_biome(lua_State *L, int index, BiomeManager *biomemgr)
{
if (index < 0)
index = lua_gettop(L) + 1 + index;
Biome *biome = (Biome *)get_objdef(L, index, biomemgr);
if (biome)
return biome;
biome = read_biome_def(L, index, biomemgr->getNodeDef());
if (!biome)
return NULL;
if (biomemgr->add(biome) == OBJDEF_INVALID_HANDLE) {
delete biome;
return NULL;
}
return biome;
}
Biome *read_biome_def(lua_State *L, int index, const NodeDefManager *ndef)
{
if (!lua_istable(L, index))
return NULL;
BiomeType biometype = (BiomeType)getenumfield(L, index, "type",
ModApiMapgen::es_BiomeTerrainType, BIOMETYPE_NORMAL);
Biome *b = BiomeManager::create(biometype);
b->name = getstringfield_default(L, index, "name", "");
b->depth_top = getintfield_default(L, index, "depth_top", 0);
b->depth_filler = getintfield_default(L, index, "depth_filler", -31000);
b->depth_water_top = getintfield_default(L, index, "depth_water_top", 0);
b->depth_riverbed = getintfield_default(L, index, "depth_riverbed", 0);
b->heat_point = getfloatfield_default(L, index, "heat_point", 0.f);
b->humidity_point = getfloatfield_default(L, index, "humidity_point", 0.f);
b->vertical_blend = getintfield_default(L, index, "vertical_blend", 0);
b->flags = 0; // reserved
b->min_pos = getv3s16field_default(
L, index, "min_pos", v3s16(-31000, -31000, -31000));
getintfield(L, index, "y_min", b->min_pos.Y);
b->max_pos = getv3s16field_default(
L, index, "max_pos", v3s16(31000, 31000, 31000));
getintfield(L, index, "y_max", b->max_pos.Y);
std::vector<std::string> &nn = b->m_nodenames;
nn.push_back(getstringfield_default(L, index, "node_top", ""));
nn.push_back(getstringfield_default(L, index, "node_filler", ""));
nn.push_back(getstringfield_default(L, index, "node_stone", ""));
nn.push_back(getstringfield_default(L, index, "node_water_top", ""));
nn.push_back(getstringfield_default(L, index, "node_water", ""));
nn.push_back(getstringfield_default(L, index, "node_river_water", ""));
nn.push_back(getstringfield_default(L, index, "node_riverbed", ""));
nn.push_back(getstringfield_default(L, index, "node_dust", ""));
size_t nnames = getstringlistfield(L, index, "node_cave_liquid", &nn);
// If no cave liquids defined, set list to "ignore" to trigger old hardcoded
// cave liquid behavior.
if (nnames == 0) {
nn.emplace_back("ignore");
nnames = 1;
}
b->m_nnlistsizes.push_back(nnames);
nn.push_back(getstringfield_default(L, index, "node_dungeon", ""));
nn.push_back(getstringfield_default(L, index, "node_dungeon_alt", ""));
nn.push_back(getstringfield_default(L, index, "node_dungeon_stair", ""));
ndef->pendNodeResolve(b);
return b;
}
size_t get_biome_list(lua_State *L, int index,
BiomeManager *biomemgr, std::unordered_set<biome_t> *biome_id_list)
{
if (index < 0)
index = lua_gettop(L) + 1 + index;
if (lua_isnil(L, index))
return 0;
bool is_single = true;
if (lua_istable(L, index)) {
lua_getfield(L, index, "name");
is_single = !lua_isnil(L, -1);
lua_pop(L, 1);
}
if (is_single) {
Biome *biome = get_or_load_biome(L, index, biomemgr);
if (!biome) {
infostream << "get_biome_list: failed to get biome '"
<< (lua_isstring(L, index) ? lua_tostring(L, index) : "")
<< "'." << std::endl;
return 1;
}
biome_id_list->insert(biome->index);
return 0;
}
// returns number of failed resolutions
size_t fail_count = 0;
for (lua_pushnil(L); lua_next(L, index); lua_pop(L, 1)) {
Biome *biome = get_or_load_biome(L, -1, biomemgr);
if (!biome) {
fail_count++;
infostream << "get_biome_list: failed to get biome '"
<< (lua_isstring(L, -1) ? lua_tostring(L, -1) : "")
<< "'" << std::endl;
continue;
}
biome_id_list->insert(biome->index);
}
return fail_count;
}
///////////////////////////////////////////////////////////////////////////////
// get_biome_id(biomename)
// 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;
const char *biome_str = luaL_checkstring(L, 1);
const BiomeManager *bmgr = getEmergeManager(L)->getBiomeManager();
if (!bmgr)
return 0;
const Biome *biome = (Biome *)bmgr->getByName(biome_str);
if (!biome || biome->index == OBJDEF_INVALID_INDEX)
return 0;
lua_pushinteger(L, biome->index);
return 1;
}
// get_biome_name(biome_id)
// returns the biome name string
int ModApiMapgen::l_get_biome_name(lua_State *L)
{
NO_MAP_LOCK_REQUIRED;
int biome_id = luaL_checkinteger(L, 1);
const BiomeManager *bmgr = getEmergeManager(L)->getBiomeManager();
if (!bmgr)
return 0;
const Biome *b = (Biome *)bmgr->getRaw(biome_id);
lua_pushstring(L, b->name.c_str());
return 1;
}
// 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);
const BiomeGen *biomegen = getBiomeGen(L);
if (!biomegen || biomegen->getType() != BIOMEGEN_ORIGINAL)
return 0;
float heat = ((BiomeGenOriginal*) biomegen)->calcHeatAtPoint(pos);
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);
const BiomeGen *biomegen = getBiomeGen(L);
if (!biomegen || biomegen->getType() != BIOMEGEN_ORIGINAL)
return 0;
float humidity = ((BiomeGenOriginal*) biomegen)->calcHumidityAtPoint(pos);
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);
const BiomeGen *biomegen = getBiomeGen(L);
if (!biomegen)
return 0;
const Biome *biome = biomegen->calcBiomeAtPoint(pos);
if (!biome || biome->index == OBJDEF_INVALID_INDEX)
return 0;
lua_newtable(L);
lua_pushinteger(L, biome->index);
lua_setfield(L, -2, "biome");
if (biomegen->getType() == BIOMEGEN_ORIGINAL) {
float heat = ((BiomeGenOriginal*) biomegen)->calcHeatAtPoint(pos);
float humidity = ((BiomeGenOriginal*) biomegen)->calcHumidityAtPoint(pos);
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)
{
NO_MAP_LOCK_REQUIRED;
const char *mgobjstr = lua_tostring(L, 1);
int mgobjint;
if (!string_to_enum(es_MapgenObject, mgobjint, mgobjstr ? mgobjstr : ""))
return 0;
enum MapgenObject mgobj = (MapgenObject)mgobjint;
Mapgen *mg = getMapgen(L);
if (!mg)
throw LuaError("Must only be called in a mapgen thread!");
size_t maplen = mg->csize.X * mg->csize.Z;
switch (mgobj) {
case MGOBJ_VMANIP: {
MMVManip *vm = mg->vm;
// VoxelManip object
LuaVoxelManip::create(L, vm, true);
// emerged min pos
push_v3s16(L, vm->m_area.MinEdge);
// emerged max pos
push_v3s16(L, vm->m_area.MaxEdge);
return 3;
}
case MGOBJ_HEIGHTMAP: {
if (!mg->heightmap)
return 0;
lua_createtable(L, maplen, 0);
for (size_t i = 0; i != maplen; i++) {
lua_pushinteger(L, mg->heightmap[i]);
lua_rawseti(L, -2, i + 1);
}
return 1;
}
case MGOBJ_BIOMEMAP: {
if (!mg->biomegen)
return 0;
lua_createtable(L, maplen, 0);
for (size_t i = 0; i != maplen; i++) {
lua_pushinteger(L, mg->biomegen->biomemap[i]);
lua_rawseti(L, -2, i + 1);
}
return 1;
}
case MGOBJ_HEATMAP: {
if (!mg->biomegen || mg->biomegen->getType() != BIOMEGEN_ORIGINAL)
return 0;
BiomeGenOriginal *bg = (BiomeGenOriginal *)mg->biomegen;
lua_createtable(L, maplen, 0);
for (size_t i = 0; i != maplen; i++) {
lua_pushnumber(L, bg->heatmap[i]);
lua_rawseti(L, -2, i + 1);
}
return 1;
}
case MGOBJ_HUMIDMAP: {
if (!mg->biomegen || mg->biomegen->getType() != BIOMEGEN_ORIGINAL)
return 0;
BiomeGenOriginal *bg = (BiomeGenOriginal *)mg->biomegen;
lua_createtable(L, maplen, 0);
for (size_t i = 0; i != maplen; i++) {
lua_pushnumber(L, bg->humidmap[i]);
lua_rawseti(L, -2, i + 1);
}
return 1;
}
case MGOBJ_GENNOTIFY: {
std::map<std::string, std::vector<v3s16>> event_map;
mg->gennotify.getEvents(event_map);
lua_createtable(L, 0, event_map.size());
for (auto it = event_map.begin(); it != event_map.end(); ++it) {
lua_createtable(L, it->second.size(), 0);
for (size_t j = 0; j != it->second.size(); j++) {
push_v3s16(L, it->second[j]);
lua_rawseti(L, -2, j + 1);
}
lua_setfield(L, -2, it->first.c_str());
}
// push user-defined data
auto &custom_map = mg->gennotify.getCustomData();
lua_createtable(L, 0, custom_map.size());
lua_getglobal(L, "core");
lua_getfield(L, -1, "deserialize");
lua_remove(L, -2); // remove 'core'
for (const auto &it : custom_map) {
lua_pushvalue(L, -1); // deserialize func
lua_pushlstring(L, it.second.c_str(), it.second.size());
lua_pushboolean(L, true);
lua_call(L, 2, 1);
lua_setfield(L, -3, it.first.c_str()); // put into table
}
lua_pop(L, 1); // remove func
lua_setfield(L, -2, "custom"); // put into top-level table
return 1;
}
}
return 0;
}
// get_spawn_level(x = num, z = num)
int ModApiMapgen::l_get_spawn_level(lua_State *L)
{
NO_MAP_LOCK_REQUIRED;
s16 x = luaL_checkinteger(L, 1);
s16 z = luaL_checkinteger(L, 2);
EmergeManager *emerge = getServer(L)->getEmergeManager();
int spawn_level = emerge->getSpawnLevelAtPoint(v2s16(x, z));
// Unsuitable spawn point
if (spawn_level == MAX_MAP_GENERATION_LIMIT)
return 0;
// 'findSpawnPos()' in server.cpp adds at least 1
lua_pushinteger(L, spawn_level + 1);
return 1;
}
// get_seed([add])
int ModApiMapgen::l_get_seed(lua_State *L)
{
NO_MAP_LOCK_REQUIRED;
// This exists to
// 1. not duplicate the truncation logic from Mapgen::Mapgen() once more
// 2. because I don't trust myself to do it correctly in Lua
auto *emerge = getEmergeManager(L);
if (!emerge || !emerge->mgparams)
return 0;
int add = 0;
if (lua_isnumber(L, 1))
add = luaL_checkint(L, 1);
s32 seed = (s32)emerge->mgparams->seed;
seed += add;
lua_pushinteger(L, seed);
return 1;
}
int ModApiMapgen::l_get_mapgen_params(lua_State *L)
{
NO_MAP_LOCK_REQUIRED;
log_deprecated(L, "get_mapgen_params is deprecated; "
"use get_mapgen_setting instead");
std::string value;
const MapSettingsManager *settingsmgr =
getEmergeManager(L)->map_settings_mgr;
lua_newtable(L);
settingsmgr->getMapSetting("mg_name", &value);
lua_pushstring(L, value.c_str());
lua_setfield(L, -2, "mgname");
settingsmgr->getMapSetting("seed", &value);
u64 seed = from_string<u64>(value);
lua_pushinteger(L, seed);
lua_setfield(L, -2, "seed");
settingsmgr->getMapSetting("water_level", &value);
lua_pushinteger(L, stoi(value, -32768, 32767));
lua_setfield(L, -2, "water_level");
settingsmgr->getMapSetting("chunksize", &value);
lua_pushinteger(L, stoi(value, -32768, 32767));
lua_setfield(L, -2, "chunksize");
settingsmgr->getMapSetting("mg_flags", &value);
lua_pushstring(L, value.c_str());
lua_setfield(L, -2, "flags");
return 1;
}
// set_mapgen_params(params)
// set mapgen parameters
int ModApiMapgen::l_set_mapgen_params(lua_State *L)
{
NO_MAP_LOCK_REQUIRED;
log_deprecated(L, "set_mapgen_params is deprecated; "
"use set_mapgen_setting instead");
if (!lua_istable(L, 1))
return 0;
MapSettingsManager *settingsmgr =
getServer(L)->getEmergeManager()->map_settings_mgr;
lua_getfield(L, 1, "mgname");
if (lua_isstring(L, -1))
settingsmgr->setMapSetting("mg_name", readParam<std::string>(L, -1), true);
lua_getfield(L, 1, "seed");
if (lua_isnumber(L, -1))
settingsmgr->setMapSetting("seed", readParam<std::string>(L, -1), true);
lua_getfield(L, 1, "water_level");
if (lua_isnumber(L, -1))
settingsmgr->setMapSetting("water_level", readParam<std::string>(L, -1), true);
lua_getfield(L, 1, "chunksize");
if (lua_isnumber(L, -1))
settingsmgr->setMapSetting("chunksize", readParam<std::string>(L, -1), true);
lua_getfield(L, 1, "flags");
if (lua_isstring(L, -1))
settingsmgr->setMapSetting("mg_flags", readParam<std::string>(L, -1), true);
return 0;
}
// get_mapgen_edges([mapgen_limit[, chunksize]])
int ModApiMapgen::l_get_mapgen_edges(lua_State *L)
{
NO_MAP_LOCK_REQUIRED;
const MapSettingsManager *settingsmgr =
getEmergeManager(L)->map_settings_mgr;
// MapSettingsManager::makeMapgenParams cannot be used here because it would
// make mapgen settings immutable from then on. Mapgen settings should stay
// mutable until after mod loading ends.
s16 mapgen_limit;
if (lua_isnumber(L, 1)) {
mapgen_limit = lua_tointeger(L, 1);
} else {
std::string mapgen_limit_str;
settingsmgr->getMapSetting("mapgen_limit", &mapgen_limit_str);
mapgen_limit = stoi(mapgen_limit_str, 0, MAX_MAP_GENERATION_LIMIT);
}
s16 chunksize;
if (lua_isnumber(L, 2)) {
chunksize = lua_tointeger(L, 2);
} else {
std::string chunksize_str;
settingsmgr->getMapSetting("chunksize", &chunksize_str);
chunksize = stoi(chunksize_str, -32768, 32767);
}
std::pair<s16, s16> edges = get_mapgen_edges(mapgen_limit, chunksize);
push_v3s16(L, v3s16(1, 1, 1) * edges.first);
push_v3s16(L, v3s16(1, 1, 1) * edges.second);
return 2;
}
// get_mapgen_setting(name)
int ModApiMapgen::l_get_mapgen_setting(lua_State *L)
{
NO_MAP_LOCK_REQUIRED;
std::string value;
const MapSettingsManager *settingsmgr =
getEmergeManager(L)->map_settings_mgr;
const char *name = luaL_checkstring(L, 1);
if (!settingsmgr->getMapSetting(name, &value))
return 0;
lua_pushstring(L, value.c_str());
return 1;
}
// get_mapgen_setting_noiseparams(name)
int ModApiMapgen::l_get_mapgen_setting_noiseparams(lua_State *L)
{
NO_MAP_LOCK_REQUIRED;
NoiseParams np;
const MapSettingsManager *settingsmgr =
getEmergeManager(L)->map_settings_mgr;
const char *name = luaL_checkstring(L, 1);
if (!settingsmgr->getMapSettingNoiseParams(name, &np))
return 0;
push_noiseparams(L, &np);
return 1;
}
// set_mapgen_setting(name, value, override_meta)
// set mapgen config values
int ModApiMapgen::l_set_mapgen_setting(lua_State *L)
{
NO_MAP_LOCK_REQUIRED;
MapSettingsManager *settingsmgr =
getServer(L)->getEmergeManager()->map_settings_mgr;
const char *name = luaL_checkstring(L, 1);
const char *value = luaL_checkstring(L, 2);
bool override_meta = readParam<bool>(L, 3, false);
if (!settingsmgr->setMapSetting(name, value, override_meta)) {
errorstream << "set_mapgen_setting: cannot set '"
<< name << "' after initialization" << std::endl;
}
return 0;
}
// set_mapgen_setting_noiseparams(name, noiseparams, set_default)
// set mapgen config values for noise parameters
int ModApiMapgen::l_set_mapgen_setting_noiseparams(lua_State *L)
{
NO_MAP_LOCK_REQUIRED;
MapSettingsManager *settingsmgr =
getServer(L)->getEmergeManager()->map_settings_mgr;
const char *name = luaL_checkstring(L, 1);
NoiseParams np;
if (!read_noiseparams(L, 2, &np)) {
errorstream << "set_mapgen_setting_noiseparams: cannot set '" << name
<< "'; invalid noiseparams table" << std::endl;
return 0;
}
bool override_meta = readParam<bool>(L, 3, false);
if (!settingsmgr->setMapSettingNoiseParams(name, &np, override_meta)) {
errorstream << "set_mapgen_setting_noiseparams: cannot set '"
<< name << "' after initialization" << std::endl;
}
return 0;
}
// set_noiseparams(name, noiseparams, set_default)
// set global config values for noise parameters
int ModApiMapgen::l_set_noiseparams(lua_State *L)
{
NO_MAP_LOCK_REQUIRED;
const char *name = luaL_checkstring(L, 1);
NoiseParams np;
if (!read_noiseparams(L, 2, &np)) {
errorstream << "set_noiseparams: cannot set '" << name
<< "'; invalid noiseparams table" << std::endl;
return 0;
}
bool set_default = !lua_isboolean(L, 3) || readParam<bool>(L, 3);
Settings::getLayer(set_default ? SL_DEFAULTS : SL_GLOBAL)->setNoiseParams(name, np);
return 0;
}
// get_noiseparams(name)
int ModApiMapgen::l_get_noiseparams(lua_State *L)
{
NO_MAP_LOCK_REQUIRED;
std::string name = luaL_checkstring(L, 1);
NoiseParams np;