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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 "server.h"
#include "environment.h"
#include "biome.h"
#include "emerge.h"
#include "mapgen_v7.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"},
{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},
};
// minetest.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;
int nargs = 1;
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);
nargs = 3;
break; }
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);
}
break; }
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);
}
break; }
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);
}
break; }
}
return nargs;
}
// minetest.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();
if (emerge->mapgen.size())
return 0;
MapgenParams *oparams = new MapgenParams;
u32 paramsmodified = 0;
u32 flagmask = 0;
lua_getfield(L, 1, "mgname");
if (lua_isstring(L, -1)) {
oparams->mg_name = std::string(lua_tostring(L, -1));
paramsmodified |= MGPARAMS_SET_MGNAME;
}
lua_getfield(L, 1, "seed");
if (lua_isnumber(L, -1)) {
oparams->seed = lua_tointeger(L, -1);
paramsmodified |= MGPARAMS_SET_SEED;
}
lua_getfield(L, 1, "water_level");
if (lua_isnumber(L, -1)) {
oparams->water_level = lua_tointeger(L, -1);
paramsmodified |= MGPARAMS_SET_WATER_LEVEL;
}
lua_getfield(L, 1, "flags");
if (lua_isstring(L, -1)) {
std::string flagstr = std::string(lua_tostring(L, -1));
oparams->flags = readFlagString(flagstr, flagdesc_mapgen);
paramsmodified |= MGPARAMS_SET_FLAGS;
lua_getfield(L, 1, "flagmask");
if (lua_isstring(L, -1)) {
flagstr = std::string(lua_tostring(L, -1));
flagmask = readFlagString(flagstr, flagdesc_mapgen);
}
}
emerge->luaoverride_params = oparams;
emerge->luaoverride_params_modified = paramsmodified;
emerge->luaoverride_flagmask = flagmask;
return 0;
}
// register_biome({lots of stuff})
int ModApiMapgen::l_register_biome(lua_State *L)
{
int index = 1;
luaL_checktype(L, index, LUA_TTABLE);
BiomeDefManager *bmgr = getServer(L)->getEmergeManager()->biomedef;
if (!bmgr) {
verbosestream << "register_biome: BiomeDefManager not active" << std::endl;
return 0;
}
enum BiomeTerrainType terrain = (BiomeTerrainType)getenumfield(L, index,
"terrain_type", es_BiomeTerrainType, BIOME_TERRAIN_NORMAL);
Biome *b = bmgr->createBiome(terrain);
b->name = getstringfield_default(L, index, "name",
"<no name>");
b->nname_top = getstringfield_default(L, index, "node_top",
"mapgen_dirt_with_grass");
b->nname_filler = getstringfield_default(L, index, "node_filler",
"mapgen_dirt");
b->nname_water = getstringfield_default(L, index, "node_water",
"mapgen_water_source");
b->nname_dust = getstringfield_default(L, index, "node_dust",
"air");
b->nname_dust_water = getstringfield_default(L, index, "node_dust_water",
"mapgen_water_source");
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
b->c_top = CONTENT_IGNORE;
b->c_filler = CONTENT_IGNORE;
b->c_water = CONTENT_IGNORE;
b->c_dust = CONTENT_IGNORE;
b->c_dust_water = CONTENT_IGNORE;
verbosestream << "register_biome: " << b->name << std::endl;
bmgr->addBiome(b);
return 0;
}
// register_decoration({lots of stuff})
int ModApiMapgen::l_register_decoration(lua_State *L)
{
int index = 1;
luaL_checktype(L, index, LUA_TTABLE);
EmergeManager *emerge = getServer(L)->getEmergeManager();
BiomeDefManager *bdef = emerge->biomedef;
enum DecorationType decotype = (DecorationType)getenumfield(L, index,
"deco_type", es_DecorationType, -1);
if (decotype == -1) {
errorstream << "register_decoration: unrecognized "
"decoration placement type";
return 0;
}
Decoration *deco = createDecoration(decotype);
if (!deco) {
errorstream << "register_decoration: decoration placement type "
<< decotype << " not implemented";
return 0;
}
deco->c_place_on = CONTENT_IGNORE;
deco->place_on_name = getstringfield_default(L, index, "place_on", "ignore");
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;
}
lua_getfield(L, index, "noise_params");
deco->np = read_noiseparams(L, -1);
lua_pop(L, 1);
lua_getfield(L, index, "biomes");
if (lua_istable(L, -1)) {
lua_pushnil(L);
while (lua_next(L, -2)) {
const char *s = lua_tostring(L, -1);
u8 biomeid = bdef->getBiomeIdByName(s);
if (biomeid)
deco->biomes.insert(biomeid);
lua_pop(L, 1);
}
lua_pop(L, 1);
}
switch (decotype) {
case DECO_SIMPLE: {
DecoSimple *dsimple = (DecoSimple *)deco;
dsimple->c_deco = CONTENT_IGNORE;
dsimple->c_spawnby = CONTENT_IGNORE;
dsimple->spawnby_name = getstringfield_default(L, index, "spawn_by", "air");
dsimple->deco_height = getintfield_default(L, index, "height", 1);
dsimple->deco_height_max = getintfield_default(L, index, "height_max", 0);
dsimple->nspawnby = getintfield_default(L, index, "num_spawn_by", -1);
lua_getfield(L, index, "decoration");
if (lua_istable(L, -1)) {
lua_pushnil(L);
while (lua_next(L, -2)) {
const char *s = lua_tostring(L, -1);
std::string str(s);
dsimple->decolist_names.push_back(str);
lua_pop(L, 1);
}
} else if (lua_isstring(L, -1)) {
dsimple->deco_name = std::string(lua_tostring(L, -1));
} else {
dsimple->deco_name = std::string("air");
}
lua_pop(L, 1);
if (dsimple->deco_height <= 0) {
errorstream << "register_decoration: simple decoration height"
" must be greater than 0" << std::endl;
delete dsimple;
return 0;
}
break; }
case DECO_SCHEMATIC: {
DecoSchematic *dschem = (DecoSchematic *)deco;
dschem->flags = getflagsfield(L, index, "flags", flagdesc_deco_schematic);
dschem->rotation = (Rotation)getenumfield(L, index,
"rotation", es_Rotation, ROTATE_0);
lua_getfield(L, index, "replacements");
if (lua_istable(L, -1)) {
int i = lua_gettop(L);
lua_pushnil(L);
while (lua_next(L, i) != 0) {
// key at index -2 and value at index -1
lua_rawgeti(L, -1, 1);
std::string replace_from = lua_tostring(L, -1);
lua_pop(L, 1);
lua_rawgeti(L, -1, 2);
std::string replace_to = lua_tostring(L, -1);
lua_pop(L, 1);
dschem->replacements[replace_from] = replace_to;
// removes value, keeps key for next iteration
lua_pop(L, 1);
}
}
lua_pop(L, 1);
lua_getfield(L, index, "schematic");
if (!read_schematic(L, -1, dschem, getServer(L))) {
delete dschem;
return 0;
}
lua_pop(L, -1);
if (!dschem->filename.empty() && !dschem->loadSchematicFile()) {
errorstream << "register_decoration: failed to load schematic file '"
<< dschem->filename << "'" << std::endl;
delete dschem;
return 0;
}
break; }
case DECO_LSYSTEM: {
//DecoLSystem *decolsystem = (DecoLSystem *)deco;
break; }
}
emerge->decorations.push_back(deco);
verbosestream << "register_decoration: decoration '" << deco->getName()
<< "' registered" << std::endl;
return 0;
}
// register_ore({lots of stuff})
int ModApiMapgen::l_register_ore(lua_State *L)
{
int index = 1;
luaL_checktype(L, index, LUA_TTABLE);
EmergeManager *emerge = getServer(L)->getEmergeManager();
enum OreType oretype = (OreType)getenumfield(L, index,
"ore_type", es_OreType, ORE_SCATTER);
Ore *ore = createOre(oretype);
if (!ore) {
errorstream << "register_ore: ore_type "
<< oretype << " not implemented";
return 0;
}
ore->ore_name = getstringfield_default(L, index, "ore", "");
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->flags = getflagsfield(L, index, "flags", flagdesc_ore);
ore->nthresh = getfloatfield_default(L, index, "noise_threshhold", 0.);
lua_getfield(L, index, "wherein");
if (lua_istable(L, -1)) {
int i = lua_gettop(L);
lua_pushnil(L);
while(lua_next(L, i) != 0) {
ore->wherein_names.push_back(lua_tostring(L, -1));
lua_pop(L, 1);
}
} else if (lua_isstring(L, -1)) {
ore->wherein_names.push_back(lua_tostring(L, -1));
} else {
ore->wherein_names.push_back("");
}
lua_pop(L, 1);
lua_getfield(L, index, "noise_params");
ore->np = read_noiseparams(L, -1);
lua_pop(L, 1);
ore->noise = NULL;
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;
}
emerge->ores.push_back(ore);
verbosestream << "register_ore: ore '" << ore->ore_name
<< "' registered" << std::endl;
return 0;
}
// create_schematic(p1, p2, probability_list, filename)
int ModApiMapgen::l_create_schematic(lua_State *L)
{
DecoSchematic dschem;
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 *s = lua_tostring(L, 4);
dschem.filename = std::string(s ? s : "");
if (!dschem.getSchematicFromMap(map, p1, p2)) {
errorstream << "create_schematic: failed to get schematic "
"from map" << std::endl;
return 0;
}
dschem.applyProbabilities(p1, &prob_list, &slice_prob_list);
dschem.saveSchematicFile(ndef);
actionstream << "create_schematic: saved schematic file '"
<< dschem.filename << "'." << std::endl;
return 1;
}
// place_schematic(p, schematic, rotation, replacement)
int ModApiMapgen::l_place_schematic(lua_State *L)
{
DecoSchematic dschem;
Map *map = &(getEnv(L)->getMap());
INodeDefManager *ndef = getServer(L)->getNodeDefManager();
v3s16 p = read_v3s16(L, 1);
if (!read_schematic(L, 2, &dschem, getServer(L)))
return 0;
int rot = ROTATE_0;
if (lua_isstring(L, 3))
string_to_enum(es_Rotation, rot, std::string(lua_tostring(L, 3)));
dschem.rotation = (Rotation)rot;
if (lua_istable(L, 4)) {
int index = 4;
lua_pushnil(L);
while (lua_next(L, index) != 0) {
// key at index -2 and value at index -1
lua_rawgeti(L, -1, 1);
std::string replace_from = lua_tostring(L, -1);
lua_pop(L, 1);
lua_rawgeti(L, -1, 2);
std::string replace_to = lua_tostring(L, -1);
lua_pop(L, 1);
dschem.replacements[replace_from] = replace_to;
// removes value, keeps key for next iteration
lua_pop(L, 1);
}
}
if (!dschem.filename.empty()) {
if (!dschem.loadSchematicFile()) {
errorstream << "place_schematic: failed to load schematic file '"
<< dschem.filename << "'" << std::endl;
return 0;
}
dschem.resolveNodeNames(ndef);
}
dschem.placeStructure(map, p);
return 1;
}
void ModApiMapgen::Initialize(lua_State *L, int top)
{
API_FCT(get_mapgen_object);
API_FCT(set_mapgen_params);
API_FCT(register_biome);
API_FCT(register_decoration);
API_FCT(register_ore);
API_FCT(create_schematic);
API_FCT(place_schematic);
}
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