// get_biome_id(biomename)
// returns the biome id used in biomemap
int ModApiMapgen::l_get_biome_id(lua_State *L)
{
NO_MAP_LOCK_REQUIRED;
const char *biome_str = lua_tostring(L, 1);
if (!biome_str)
return 0;
BiomeManager *bmgr = getServer(L)->getEmergeManager()->biomemgr;
if (!bmgr)
return 0;
Biome *biome = (Biome *)bmgr->getByName(biome_str);
if (!biome || biome->index == OBJDEF_INVALID_INDEX)
return 0;
lua_pushinteger(L, biome->index);
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();
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->y_min = getintfield_default(L, index, "y_min", -31000);
deco->y_max = getintfield_default(L, index, "y_max", 31000);
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;
}
NodeResolveInfo *nri = new NodeResolveInfo(deco);
//// Get node name(s) to place decoration on
std::vector<const char *> place_on_names;
getstringlistfield(L, index, "place_on", place_on_names);
nri->nodelistinfo.push_back(NodeListInfo(place_on_names.size()));
for (size_t i = 0; i != place_on_names.size(); i++)
nri->nodenames.push_back(place_on_names[i]);
getflagsfield(L, index, "flags", flagdesc_deco, &deco->flags, NULL);
//// Get NoiseParams to define how decoration is placed
lua_getfield(L, index, "noise_params");
if (read_noiseparams(L, -1, &deco->np))
deco->flags |= DECO_USE_NOISE;
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, nri, (DecoSimple *)deco);
break;
case DECO_SCHEMATIC:
success = regDecoSchematic(L, ndef, (DecoSchematic *)deco);
break;
case DECO_LSYSTEM:
break;
}
ndef->pendNodeResolve(nri);
if (!success) {
delete deco;
return 0;
}
u32 id = decomgr->add(deco);
if (id == (u32)-1) {
delete deco;
return 0;
}
verbosestream << "register_decoration: " << deco->name << std::endl;
lua_pushinteger(L, id);
return 1;
}