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Add function minetest.read_schematic
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@ -4844,6 +4844,18 @@ Schematics
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the Lua code generated will use that number of spaces as indentation
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instead of a tab character.
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* `minetest.read_schematic(schematic, options)`
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* Returns a Lua table representing the schematic (see: [Schematic specifier])
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* `schematic` is the schematic to read (see: [Schematic specifier])
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* `options` is a table containing the following optional parameters:
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* `write_yslice_prob`: string value:
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* `none`: no `write_yslice_prob` table is inserted,
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* `low`: only probabilities that are not 254 or 255 are written in
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the `write_ylisce_prob` table,
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* `all`: write all probabilities to the `write_yslice_prob` table.
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* The default for this option is `all`.
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* Any invalid value will be interpreted as `all`.
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HTTP Requests
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-------------
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@ -1754,6 +1754,83 @@ int ModApiMapgen::l_serialize_schematic(lua_State *L)
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return 1;
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}
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// read_schematic(schematic, options={...})
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int ModApiMapgen::l_read_schematic(lua_State *L)
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{
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NO_MAP_LOCK_REQUIRED;
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SchematicManager *schemmgr = getServer(L)->getEmergeManager()->schemmgr;
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//// Read options
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std::string write_yslice = getstringfield_default(L, 2, "write_yslice_prob", "all");
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//// Get schematic
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bool was_loaded = false;
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Schematic *schem = (Schematic *)get_objdef(L, 1, schemmgr);
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if (!schem) {
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schem = load_schematic(L, 1, NULL, NULL);
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was_loaded = true;
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}
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if (!schem) {
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errorstream << "read_schematic: failed to get schematic" << std::endl;
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return 0;
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}
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lua_pop(L, 2);
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//// Create the Lua table
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u32 numnodes = schem->size.X * schem->size.Y * schem->size.Z;
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const std::vector<std::string> &names = schem->m_nodenames;
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lua_createtable(L, 0, (write_yslice == "none") ? 2 : 3);
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// Create the size field
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push_v3s16(L, schem->size);
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lua_setfield(L, 1, "size");
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// Create the yslice_prob field
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if (write_yslice != "none") {
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lua_createtable(L, schem->size.Y, 0);
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for (u16 y = 0; y != schem->size.Y; ++y) {
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u8 probability = schem->slice_probs[y] & MTSCHEM_PROB_MASK;
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if (probability < MTSCHEM_PROB_ALWAYS || write_yslice != "low") {
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lua_createtable(L, 0, 2);
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lua_pushinteger(L, y);
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lua_setfield(L, 3, "ypos");
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lua_pushinteger(L, probability * 2);
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lua_setfield(L, 3, "prob");
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lua_rawseti(L, 2, y + 1);
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}
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}
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lua_setfield(L, 1, "yslice_prob");
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}
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// Create the data field
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lua_createtable(L, numnodes, 0); // data table
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for (u32 i = 0; i < numnodes; ++i) {
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MapNode node = schem->schemdata[i];
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u8 probability = node.param1 & MTSCHEM_PROB_MASK;
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bool force_place = node.param1 & MTSCHEM_FORCE_PLACE;
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lua_createtable(L, 0, force_place ? 4 : 3);
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lua_pushstring(L, names[schem->schemdata[i].getContent()].c_str());
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lua_setfield(L, 3, "name");
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lua_pushinteger(L, probability * 2);
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lua_setfield(L, 3, "prob");
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lua_pushinteger(L, node.param2);
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lua_setfield(L, 3, "param2");
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if (force_place) {
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lua_pushboolean(L, 1);
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lua_setfield(L, 3, "force_place");
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}
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lua_rawseti(L, 2, i + 1);
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}
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lua_setfield(L, 1, "data");
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if (was_loaded)
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delete schem;
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return 1;
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}
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void ModApiMapgen::Initialize(lua_State *L, int top)
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{
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@ -1793,4 +1870,5 @@ void ModApiMapgen::Initialize(lua_State *L, int top)
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API_FCT(place_schematic);
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API_FCT(place_schematic_on_vmanip);
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API_FCT(serialize_schematic);
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API_FCT(read_schematic);
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}
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@ -131,6 +131,9 @@ private:
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// serialize_schematic(schematic, format, options={...})
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static int l_serialize_schematic(lua_State *L);
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// read_schematic(schematic, options={...})
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static int l_read_schematic(lua_State *L);
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public:
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static void Initialize(lua_State *L, int top);
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