minetest/src/script/lua_api/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 "util/serialize.h"
#include "server.h"
#include "environment.h"
#include "emerge.h"
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#include "mg_biome.h"
#include "mg_ore.h"
#include "mg_decoration.h"
#include "mg_schematic.h"
#include "mapgen_v7.h"
#include "settings.h"
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#include "main.h"
#include "log.h"
struct EnumString ModApiMapgen::es_BiomeTerrainType[] =
{
{BIOME_TERRAIN_NORMAL, "normal"},
{BIOME_TERRAIN_LIQUID, "liquid"},
{BIOME_TERRAIN_NETHER, "nether"},
{BIOME_TERRAIN_AETHER, "aether"},
{BIOME_TERRAIN_FLAT, "flat"},
{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_CLAYLIKE, "claylike"},
{0, NULL},
};
struct EnumString ModApiMapgen::es_Rotation[] =
{
{ROTATE_0, "0"},
{ROTATE_90, "90"},
{ROTATE_180, "180"},
{ROTATE_270, "270"},
{ROTATE_RAND, "random"},
{0, NULL},
};
static void read_schematic_replacements(lua_State *L,
std::map<std::string, std::string> &replace_names, int 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);
replace_from = lua_tostring(L, -1);
lua_pop(L, 1);
lua_rawgeti(L, -1, 2);
replace_to = lua_tostring(L, -1);
lua_pop(L, 1);
} else { // New {x = "y", ...} format
replace_from = lua_tostring(L, -2);
replace_to = lua_tostring(L, -1);
}
replace_names[replace_from] = replace_to;
lua_pop(L, 1);
}
}
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// get_mapgen_object(objectname)
// returns the requested object used during map generation
int ModApiMapgen::l_get_mapgen_object(lua_State *L)
{
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;
EmergeManager *emerge = getServer(L)->getEmergeManager();
Mapgen *mg = emerge->getCurrentMapgen();
if (!mg)
return 0;
size_t maplen = mg->csize.X * mg->csize.Z;
switch (mgobj) {
case MGOBJ_VMANIP: {
ManualMapVoxelManipulator *vm = mg->vm;
// VoxelManip object
LuaVoxelManip *o = new LuaVoxelManip(vm, true);
*(void **)(lua_newuserdata(L, sizeof(void *))) = o;
luaL_getmetatable(L, "VoxelManip");
lua_setmetatable(L, -2);
// 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_newtable(L);
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->biomemap)
return 0;
lua_newtable(L);
for (size_t i = 0; i != maplen; i++) {
lua_pushinteger(L, mg->biomemap[i]);
lua_rawseti(L, -2, i + 1);
}
return 1;
}
case MGOBJ_HEATMAP: { // Mapgen V7 specific objects
case MGOBJ_HUMIDMAP:
if (strcmp(emerge->params.mg_name.c_str(), "v7"))
return 0;
MapgenV7 *mgv7 = (MapgenV7 *)mg;
float *arr = (mgobj == MGOBJ_HEATMAP) ?
mgv7->noise_heat->result : mgv7->noise_humidity->result;
if (!arr)
return 0;
lua_newtable(L);
for (size_t i = 0; i != maplen; i++) {
lua_pushnumber(L, arr[i]);
lua_rawseti(L, -2, i + 1);
}
return 1;
}
case MGOBJ_GENNOTIFY: {
lua_newtable(L);
for (int i = 0; flagdesc_gennotify[i].name; i++) {
if (!(emerge->gennotify & flagdesc_gennotify[i].flag))
continue;
std::vector<v3s16> *posvec = mg->gen_notifications[i];
if (!posvec)
return 0;
lua_newtable(L);
for (unsigned int j = 0; j != posvec->size(); j++) {
push_v3s16(L, (*posvec)[j]);
lua_rawseti(L, -2, j + 1);
}
lua_setfield(L, -2, flagdesc_gennotify[i].name);
posvec->clear();
}
return 1;
}
}
return 0;
}
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// set_mapgen_params(params)
// set mapgen parameters
int ModApiMapgen::l_set_mapgen_params(lua_State *L)
{
if (!lua_istable(L, 1))
return 0;
EmergeManager *emerge = getServer(L)->getEmergeManager();
assert(emerge);
std::string flagstr;
u32 flags = 0, flagmask = 0;
lua_getfield(L, 1, "mgname");
if (lua_isstring(L, -1)) {
emerge->params.mg_name = std::string(lua_tostring(L, -1));
delete emerge->params.sparams;
emerge->params.sparams = NULL;
}
lua_getfield(L, 1, "seed");
if (lua_isnumber(L, -1))
emerge->params.seed = lua_tointeger(L, -1);
lua_getfield(L, 1, "water_level");
if (lua_isnumber(L, -1))
emerge->params.water_level = lua_tointeger(L, -1);
lua_getfield(L, 1, "flagmask");
if (lua_isstring(L, -1)) {
flagstr = lua_tostring(L, -1);
emerge->params.flags &= ~readFlagString(flagstr, flagdesc_mapgen, NULL);
errorstream << "set_mapgen_params(): flagmask field is deprecated, "
"see lua_api.txt" << std::endl;
}
if (getflagsfield(L, 1, "flags", flagdesc_mapgen, &flags, &flagmask)) {
emerge->params.flags &= ~flagmask;
emerge->params.flags |= flags;
}
return 0;
}
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// set_noiseparam_defaults({np1={noise params}, ...})
// set default values for noise parameters if not present in global settings
int ModApiMapgen::l_set_noiseparam_defaults(lua_State *L)
{
NoiseParams np;
std::string val, name;
if (!lua_istable(L, 1))
return 0;
lua_pushnil(L);
while (lua_next(L, 1)) {
if (read_noiseparams_nc(L, -1, &np)) {
if (!serializeStructToString(&val, NOISEPARAMS_FMT_STR, &np))
continue;
if (!lua_isstring(L, -2))
continue;
name = lua_tostring(L, -2);
g_settings->setDefault(name, val);
}
lua_pop(L, 1);
}
return 0;
}
// set_gen_notify(string)
int ModApiMapgen::l_set_gen_notify(lua_State *L)
{
u32 flags = 0, flagmask = 0;
if (read_flags(L, 1, flagdesc_gennotify, &flags, &flagmask)) {
EmergeManager *emerge = getServer(L)->getEmergeManager();
emerge->gennotify = flags;
}
return 0;
}
// register_biome({lots of stuff})
int ModApiMapgen::l_register_biome(lua_State *L)
{
int index = 1;
luaL_checktype(L, index, LUA_TTABLE);
NodeResolver *resolver = getServer(L)->getNodeDefManager()->getResolver();
BiomeManager *bmgr = getServer(L)->getEmergeManager()->biomemgr;
enum BiomeTerrainType terrain = (BiomeTerrainType)getenumfield(L, index,
"terrain_type", es_BiomeTerrainType, BIOME_TERRAIN_NORMAL);
Biome *b = bmgr->create(terrain);
b->name = getstringfield_default(L, index, "name", "");
b->depth_top = getintfield_default(L, index, "depth_top", 1);
b->depth_filler = getintfield_default(L, index, "depth_filler", 3);
b->height_min = getintfield_default(L, index, "height_min", 0);
b->height_max = getintfield_default(L, index, "height_max", 0);
b->heat_point = getfloatfield_default(L, index, "heat_point", 0.);
b->humidity_point = getfloatfield_default(L, index, "humidity_point", 0.);
b->flags = 0; //reserved
u32 id = bmgr->add(b);
if (id == (u32)-1) {
delete b;
return 0;
}
// Pend node resolutions only if insertion succeeded
resolver->addNode(getstringfield_default(L, index, "node_top", ""),
"mapgen_dirt_with_grass", CONTENT_AIR, &b->c_top);
resolver->addNode(getstringfield_default(L, index, "node_filler", ""),
"mapgen_dirt", CONTENT_AIR, &b->c_filler);
resolver->addNode(getstringfield_default(L, index, "node_water", ""),
"mapgen_water_source", CONTENT_AIR, &b->c_water);
resolver->addNode(getstringfield_default(L, index, "node_dust", ""),
"air", CONTENT_IGNORE, &b->c_dust);
resolver->addNode(getstringfield_default(L, index, "node_dust_water", ""),
"mapgen_water_source", CONTENT_IGNORE, &b->c_dust_water);
verbosestream << "register_biome: " << b->name << std::endl;
lua_pushinteger(L, id);
return 1;
}
// register_decoration({lots of stuff})
int ModApiMapgen::l_register_decoration(lua_State *L)
{
int index = 1;
luaL_checktype(L, index, LUA_TTABLE);
INodeDefManager *ndef = getServer(L)->getNodeDefManager();
NodeResolver *resolver = getServer(L)->getNodeDefManager()->getResolver();
DecorationManager *decomgr = getServer(L)->getEmergeManager()->decomgr;
BiomeManager *biomemgr = getServer(L)->getEmergeManager()->biomemgr;
enum DecorationType decotype = (DecorationType)getenumfield(L, index,
"deco_type", es_DecorationType, -1);
Decoration *deco = decomgr->create(decotype);
if (!deco) {
errorstream << "register_decoration: decoration placement type "
<< decotype << " not implemented";
return 0;
}
deco->name = getstringfield_default(L, index, "name", "");
deco->fill_ratio = getfloatfield_default(L, index, "fill_ratio", 0.02);
deco->sidelen = getintfield_default(L, index, "sidelen", 8);
if (deco->sidelen <= 0) {
errorstream << "register_decoration: sidelen must be "
"greater than 0" << std::endl;
delete deco;
return 0;
}
//// Get node name(s) to place decoration on
std::vector<const char *> place_on_names;
getstringlistfield(L, index, "place_on", place_on_names);
for (size_t i = 0; i != place_on_names.size(); i++)
resolver->addNodeList(place_on_names[i], &deco->c_place_on);
//// Get NoiseParams to define how decoration is placed
lua_getfield(L, index, "noise_params");
deco->np = read_noiseparams(L, -1);
lua_pop(L, 1);
//// Get biomes associated with this decoration (if any)
std::vector<const char *> biome_list;
getstringlistfield(L, index, "biomes", biome_list);
for (size_t i = 0; i != biome_list.size(); i++) {
Biome *b = (Biome *)biomemgr->getByName(biome_list[i]);
if (!b)
continue;
deco->biomes.insert(b->id);
}
//// Handle decoration type-specific parameters
bool success = false;
switch (decotype) {
case DECO_SIMPLE:
success = regDecoSimple(L, resolver, (DecoSimple *)deco);
break;
case DECO_SCHEMATIC:
success = regDecoSchematic(L, ndef, (DecoSchematic *)deco);
break;
case DECO_LSYSTEM:
break;
}
if (!success) {
delete deco;
return 0;
}
u32 id = decomgr->add(deco);
if (id == (u32)-1) {
delete deco;
return 0;
}
lua_pushinteger(L, id);
return 1;
}
bool ModApiMapgen::regDecoSimple(lua_State *L,
NodeResolver *resolver, DecoSimple *deco)
{
int index = 1;
deco->deco_height = getintfield_default(L, index, "height", 1);
deco->deco_height_max = getintfield_default(L, index, "height_max", 0);
deco->nspawnby = getintfield_default(L, index, "num_spawn_by", -1);
if (deco->deco_height <= 0) {
errorstream << "register_decoration: simple decoration height"
" must be greater than 0" << std::endl;
return false;
}
std::vector<const char *> deco_names;
getstringlistfield(L, index, "decoration", deco_names);
if (deco_names.size() == 0) {
errorstream << "register_decoration: no decoration nodes "
"defined" << std::endl;
return false;
}
std::vector<const char *> spawnby_names;
getstringlistfield(L, index, "spawn_by", spawnby_names);
if (deco->nspawnby != -1 && spawnby_names.size() == 0) {
errorstream << "register_decoration: no spawn_by nodes defined,"
" but num_spawn_by specified" << std::endl;
return false;
}
for (size_t i = 0; i != deco_names.size(); i++)
resolver->addNodeList(deco_names[i], &deco->c_decos);
for (size_t i = 0; i != spawnby_names.size(); i++)
resolver->addNodeList(spawnby_names[i], &deco->c_spawnby);
return true;
}
bool ModApiMapgen::regDecoSchematic(lua_State *L, INodeDefManager *ndef,
DecoSchematic *deco)
{
int index = 1;
deco->flags = 0;
getflagsfield(L, index, "flags", flagdesc_deco_schematic, &deco->flags, NULL);
deco->rotation = (Rotation)getenumfield(L, index, "rotation",
es_Rotation, ROTATE_0);
std::map<std::string, std::string> replace_names;
lua_getfield(L, index, "replacements");
if (lua_istable(L, -1))
read_schematic_replacements(L, replace_names, lua_gettop(L));
lua_pop(L, 1);
Schematic *schem = new Schematic;
lua_getfield(L, index, "schematic");
if (!get_schematic(L, -1, schem, ndef, replace_names)) {
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lua_pop(L, 1);
delete schem;
return false;
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}
lua_pop(L, 1);
deco->schematic = schem;
return true;
}
// register_ore({lots of stuff})
int ModApiMapgen::l_register_ore(lua_State *L)
{
int index = 1;
luaL_checktype(L, index, LUA_TTABLE);
NodeResolver *resolver = getServer(L)->getNodeDefManager()->getResolver();
OreManager *oremgr = getServer(L)->getEmergeManager()->oremgr;
enum OreType oretype = (OreType)getenumfield(L, index,
"ore_type", es_OreType, ORE_SCATTER);
Ore *ore = oremgr->create(oretype);
if (!ore) {
errorstream << "register_ore: ore_type " << oretype << " not implemented";
return 0;
}
ore->name = getstringfield_default(L, index, "name", "");
ore->ore_param2 = (u8)getintfield_default(L, index, "ore_param2", 0);
ore->clust_scarcity = getintfield_default(L, index, "clust_scarcity", 1);
ore->clust_num_ores = getintfield_default(L, index, "clust_num_ores", 1);
ore->clust_size = getintfield_default(L, index, "clust_size", 0);
ore->height_min = getintfield_default(L, index, "height_min", 0);
ore->height_max = getintfield_default(L, index, "height_max", 0);
ore->nthresh = getfloatfield_default(L, index, "noise_threshhold", 0);
ore->noise = NULL;
ore->flags = 0;
if (ore->clust_scarcity <= 0 || ore->clust_num_ores <= 0) {
errorstream << "register_ore: clust_scarcity and clust_num_ores"
"must be greater than 0" << std::endl;
delete ore;
return 0;
}
getflagsfield(L, index, "flags", flagdesc_ore, &ore->flags, NULL);
lua_getfield(L, index, "noise_params");
ore->np = read_noiseparams(L, -1);
lua_pop(L, 1);
u32 id = oremgr->add(ore);
if (id == (u32)-1) {
delete ore;
return 0;
}
std::vector<const char *> wherein_names;
getstringlistfield(L, index, "wherein", wherein_names);
for (size_t i = 0; i != wherein_names.size(); i++)
resolver->addNodeList(wherein_names[i], &ore->c_wherein);
resolver->addNode(getstringfield_default(L, index, "ore", ""),
"", CONTENT_AIR, &ore->c_ore);
lua_pushinteger(L, id);
return 1;
}
// create_schematic(p1, p2, probability_list, filename)
int ModApiMapgen::l_create_schematic(lua_State *L)
{
Schematic schem;
Map *map = &(getEnv(L)->getMap());
INodeDefManager *ndef = getServer(L)->getNodeDefManager();
v3s16 p1 = read_v3s16(L, 1);
v3s16 p2 = read_v3s16(L, 2);
sortBoxVerticies(p1, p2);
std::vector<std::pair<v3s16, u8> > prob_list;
if (lua_istable(L, 3)) {
lua_pushnil(L);
while (lua_next(L, 3)) {
if (lua_istable(L, -1)) {
lua_getfield(L, -1, "pos");
v3s16 pos = read_v3s16(L, -1);
lua_pop(L, 1);
u8 prob = getintfield_default(L, -1, "prob", MTSCHEM_PROB_ALWAYS);
prob_list.push_back(std::make_pair(pos, prob));
}
lua_pop(L, 1);
}
}
std::vector<std::pair<s16, u8> > slice_prob_list;
if (lua_istable(L, 5)) {
lua_pushnil(L);
while (lua_next(L, 5)) {
if (lua_istable(L, -1)) {
s16 ypos = getintfield_default(L, -1, "ypos", 0);
u8 prob = getintfield_default(L, -1, "prob", MTSCHEM_PROB_ALWAYS);
slice_prob_list.push_back(std::make_pair(ypos, prob));
}
lua_pop(L, 1);
}
}
const char *filename = luaL_checkstring(L, 4);
if (!schem.getSchematicFromMap(map, p1, p2)) {
errorstream << "create_schematic: failed to get schematic "
"from map" << std::endl;
return 0;
}
schem.applyProbabilities(p1, &prob_list, &slice_prob_list);
schem.saveSchematicToFile(filename, ndef);
actionstream << "create_schematic: saved schematic file '"
<< filename << "'." << std::endl;
return 1;
}
// place_schematic(p, schematic, rotation, replacement)
int ModApiMapgen::l_place_schematic(lua_State *L)
{
Schematic schem;
Map *map = &(getEnv(L)->getMap());
INodeDefManager *ndef = getServer(L)->getNodeDefManager();
//// Read position
v3s16 p = read_v3s16(L, 1);
//// Read rotation
int rot = ROTATE_0;
if (lua_isstring(L, 3))
string_to_enum(es_Rotation, rot, std::string(lua_tostring(L, 3)));
//// Read force placement
bool force_placement = true;
if (lua_isboolean(L, 5))
force_placement = lua_toboolean(L, 5);
//// Read node replacements
std::map<std::string, std::string> replace_names;
if (lua_istable(L, 4))
read_schematic_replacements(L, replace_names, 4);
//// Read schematic
if (!get_schematic(L, 2, &schem, ndef, replace_names)) {
errorstream << "place_schematic: failed to get schematic" << std::endl;
return 0;
}
schem.placeStructure(map, p, 0, (Rotation)rot, force_placement, ndef);
return 1;
}
void ModApiMapgen::Initialize(lua_State *L, int top)
{
API_FCT(get_mapgen_object);
API_FCT(set_mapgen_params);
API_FCT(set_noiseparam_defaults);
API_FCT(set_gen_notify);
API_FCT(register_biome);
API_FCT(register_decoration);
API_FCT(register_ore);
API_FCT(create_schematic);
API_FCT(place_schematic);
}