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Decoration: Add Schematic decoration type

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This commit is contained in:
kwolekr 2013-06-22 00:29:44 -04:00
parent b1a74df26d
commit c1b829077a
8 changed files with 589 additions and 22 deletions
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62
doc/lua_api.txt
View File

@ -421,6 +421,32 @@ The default value is simple, and is currently the only type supported.
for example. Can also generate a decoration of random height between a specified lower and
upper bound. This type of decoration is intended for placement of grass, flowers, cacti,
papyrus, and so on.
- schematic
Copies a box of MapNodes from a specified schematic file (or raw description). Can specify a
probability of a node randomly appearing when placed. This decoration type is intended to be used
for multi-node sized discrete structures, such as trees, cave spikes, rocks, and so on.
Schematic specifier
--------------------
A schematic specifier identifies a schematic by either a filename to a Minetest Schematic file (.mts)
or through raw data supplied through Lua, in the form of a table. This table must specify two fields:
- The 'size' field is a 3d vector containing the dimensions of the provided schematic.
- The 'data' field is a flat table of MapNodes making up the schematic, in the order of [z [y [x]]].
In the bulk MapNode data, param1, instead of the typical light values, instead represents the
probability of that node appearing in the structure. It is an integer with a value from 0-255; 0 means
that node will always appear. If the probability value p is non-zero, then there is a
(p / 256 * 100)% chance that node will appear when the schematic is placed on the map.
Important note: Node aliases cannot be used for a raw schematic provided when registering as a decoration.
Schematic attributes
-----------------
Currently supported flags: place_center_x, place_center_y, place_center_z
- place_center_x
Placement of this decoration is centered along the X axis.
- place_center_y
Placement of this decoration is centered along the Y axis.
- place_center_z
Placement of this decoration is centered along the Z axis.
HUD element types
-------------------
@ -1018,6 +1044,7 @@ minetest.setting_get(name) -> string or nil
minetest.setting_getbool(name) -> boolean value or nil
minetest.setting_get_pos(name) -> position or nil
minetest.setting_save() -> nil, save all settings to config file
minetest.add_to_creative_inventory(itemstring)
Authentication:
minetest.notify_authentication_modified(name)
@ -1248,6 +1275,21 @@ minetest.delete_particlespawner(id, player)
^ If playername is specified, only deletes on the player's client,
^ otherwise on all clients
Schematics:
minetest.create_schematic(p1, p2, probability_list, filename)
^ Create a schematic from the volume of map specified by the box formed by p1 and p2.
^ Apply the specified probability values to the specified nodes in probability_list.
^ probability_list is an array of tables containing two fields, pos and prob.
^ pos is the 3d vector specifying the absolute coordinates of the node being modified,
^ and prob is the integer value from 0 to 255 of the probability (see: Schematic specifier).
^ If there are two or more entries with the same pos value, the last occuring in the array is used.
^ If pos is not inside the box formed by p1 and p2, it is ignored.
^ If probability_list is nil, no probabilities are applied.
^ Saves schematic in the Minetest Schematic format to filename.
minetest.place_schematic(pos, schematic)
^ Place the schematic specified by schematic (see: Schematic specifier) at pos.
Random:
minetest.get_connected_players() -> list of ObjectRefs
minetest.hash_node_position({x=,y=,z=}) -> 48-bit integer
@ -1292,6 +1334,15 @@ minetest.object_refs
minetest.luaentities
^ List of lua entities, indexed by active object id
Deprecated but defined for backwards compatibility:
minetest.digprop_constanttime(time)
minetest.digprop_stonelike(toughness)
minetest.digprop_dirtlike(toughness)
minetest.digprop_gravellike(toughness)
minetest.digprop_woodlike(toughness)
minetest.digprop_leaveslike(toughness)
minetest.digprop_glasslike(toughness)
Class reference
----------------
NodeMetaRef: Node metadata - reference extra data and functionality stored
@ -1700,7 +1751,6 @@ Node definition (register_node)
liquid_alternative_source = "", -- Source version of flowing liquid
liquid_viscosity = 0, -- Higher viscosity = slower flow (max. 7)
liquid_renewable = true, -- Can new liquid source be created by placing
drowning = true, -- Player will drown in these
two or more sources nearly?
light_source = 0, -- Amount of light emitted by node
damage_per_second = 0, -- If player is inside node, this damage is caused
@ -1894,6 +1944,16 @@ Decoration definition (register_decoration)
num_spawn_by = 1,
^ Number of spawn_by nodes that must be surrounding the decoration position to occur.
^ If absent or -1, decorations occur next to any nodes.
----- Schematic-type parameters
schematic = "foobar.mts",
^ If schematic is a string, it is the filepath relative to the current working directory of the
^ specified Minetest schematic file.
^ - OR -, could instead be a table containing two fields, size and data:
schematic = {size = {x=4, y=6, z=4}, data = { {"cobble", 0, 0}, {"dirt_with_grass", 0, 0}, ...}},
^ See 'Schematic specifier' for details.
flags = "place_center_x, place_center_z",
^ Flags for schematic decorations. See 'Schematic attributes'.
}
Chatcommand definition (register_chatcommand)

319
src/mapgen.cpp
View File

@ -35,6 +35,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
#include "treegen.h"
#include "mapgen_v6.h"
#include "mapgen_v7.h"
#include "util/serialize.h"
FlagDesc flagdesc_mapgen[] = {
{"trees", MG_TREES},
@ -53,6 +54,12 @@ FlagDesc flagdesc_ore[] = {
{NULL, 0}
};
FlagDesc flagdesc_deco_schematic[] = {
{"place_center_x", DECO_PLACE_CENTER_X},
{"place_center_y", DECO_PLACE_CENTER_Y},
{"place_center_z", DECO_PLACE_CENTER_Z},
{NULL, 0}
};
///////////////////////////////////////////////////////////////////////////////
@ -198,12 +205,15 @@ void OreSheet::generate(ManualMapVoxelManipulator *vm, int seed,
}
///////////////////////////////////////////////////////////////////////////////
Decoration *createDecoration(DecorationType type) {
switch (type) {
case DECO_SIMPLE:
return new DecoSimple;
//case DECO_SCHEMATIC:
// return new DecoSchematic;
case DECO_SCHEMATIC:
return new DecoSchematic;
//case DECO_LSYSTEM:
// return new DecoLSystem;
default:
@ -212,6 +222,14 @@ Decoration *createDecoration(DecorationType type) {
}
Decoration::Decoration() {
mapseed = 0;
np = NULL;
fill_ratio = 0;
sidelen = 1;
}
Decoration::~Decoration() {
delete np;
}
@ -352,6 +370,9 @@ void Decoration::placeCutoffs(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax)
#endif
///////////////////////////////////////////////////////////////////////////////
void DecoSimple::resolveNodeNames(INodeDefManager *ndef) {
Decoration::resolveNodeNames(ndef);
@ -359,7 +380,7 @@ void DecoSimple::resolveNodeNames(INodeDefManager *ndef) {
c_deco = ndef->getId(deco_name);
if (c_deco == CONTENT_IGNORE) {
errorstream << "DecoSimple::resolveNodeNames: decoration node '"
<< deco_name << "' not defined";
<< deco_name << "' not defined" << std::endl;
c_deco = CONTENT_AIR;
}
}
@ -367,7 +388,7 @@ void DecoSimple::resolveNodeNames(INodeDefManager *ndef) {
c_spawnby = ndef->getId(spawnby_name);
if (c_spawnby == CONTENT_IGNORE) {
errorstream << "DecoSimple::resolveNodeNames: spawnby node '"
<< deco_name << "' not defined";
<< deco_name << "' not defined" << std::endl;
nspawnby = -1;
c_spawnby = CONTENT_AIR;
}
@ -380,7 +401,7 @@ void DecoSimple::resolveNodeNames(INodeDefManager *ndef) {
content_t c = ndef->getId(decolist_names[i]);
if (c == CONTENT_IGNORE) {
errorstream << "DecoSimple::resolveNodeNames: decolist node '"
<< decolist_names[i] << "' not defined";
<< decolist_names[i] << "' not defined" << std::endl;
c = CONTENT_AIR;
}
c_decolist.push_back(c);
@ -388,7 +409,8 @@ void DecoSimple::resolveNodeNames(INodeDefManager *ndef) {
}
void DecoSimple::generate(Mapgen *mg, PseudoRandom *pr, s16 max_y, s16 start_y, v3s16 p) {
void DecoSimple::generate(Mapgen *mg, PseudoRandom *pr, s16 max_y,
s16 start_y, v3s16 p) {
ManualMapVoxelManipulator *vm = mg->vm;
u32 vi = vm->m_area.index(p);
@ -454,6 +476,291 @@ std::string DecoSimple::getName() {
///////////////////////////////////////////////////////////////////////////////
DecoSchematic::DecoSchematic() {
node_names = NULL;
schematic = NULL;
flags = 0;
size = v3s16(0, 0, 0);
}
DecoSchematic::~DecoSchematic() {
delete node_names;
delete []schematic;
}
void DecoSchematic::resolveNodeNames(INodeDefManager *ndef) {
Decoration::resolveNodeNames(ndef);
if (filename.empty())
return;
if (!node_names) {
errorstream << "DecoSchematic::resolveNodeNames: node name list was "
"not created" << std::endl;
return;
}
for (size_t i = 0; i != node_names->size(); i++) {
content_t c = ndef->getId(node_names->at(i));
if (c == CONTENT_IGNORE) {
errorstream << "DecoSchematic::resolveNodeNames: node '"
<< node_names->at(i) << "' not defined" << std::endl;
c = CONTENT_AIR;
}
c_nodes.push_back(c);
}
for (int i = 0; i != size.X * size.Y * size.Z; i++)
schematic[i].setContent(c_nodes[schematic[i].getContent()]);
delete node_names;
node_names = NULL;
}
void DecoSchematic::generate(Mapgen *mg, PseudoRandom *pr, s16 max_y,
s16 start_y, v3s16 p) {
ManualMapVoxelManipulator *vm = mg->vm;
if (flags & DECO_PLACE_CENTER_X)
p.X -= (size.X + 1) / 2;
if (flags & DECO_PLACE_CENTER_Y)
p.Y -= (size.Y + 1) / 2;
if (flags & DECO_PLACE_CENTER_Z)
p.Z -= (size.Z + 1) / 2;
u32 vi = vm->m_area.index(p);
if (vm->m_data[vi].getContent() != c_place_on &&
c_place_on != CONTENT_IGNORE)
return;
u32 i = 0;
for (s16 z = 0; z != size.Z; z++)
for (s16 y = 0; y != size.Y; y++) {
vi = vm->m_area.index(p.X, p.Y + y, p.Z + z);
for (s16 x = 0; x != size.X; x++, i++, vi++) {
if (!vm->m_area.contains(vi))
continue;
content_t c = vm->m_data[vi].getContent();
if (c != CONTENT_AIR && c != CONTENT_IGNORE)
continue;
if (schematic[i].param1 && myrand_range(1, 256) > schematic[i].param1)
continue;
vm->m_data[vi] = schematic[i];
vm->m_data[vi].param1 = 0;
}
}
}
int DecoSchematic::getHeight() {
return size.Y;
}
std::string DecoSchematic::getName() {
return filename;
}
void DecoSchematic::placeStructure(Map *map, v3s16 p) {
assert(schematic != NULL);
ManualMapVoxelManipulator *vm = new ManualMapVoxelManipulator(map);
if (flags & DECO_PLACE_CENTER_X)
p.X -= (size.X + 1) / 2;
if (flags & DECO_PLACE_CENTER_Y)
p.Y -= (size.Y + 1) / 2;
if (flags & DECO_PLACE_CENTER_Z)
p.Z -= (size.Z + 1) / 2;
v3s16 bp1 = getNodeBlockPos(p);
v3s16 bp2 = getNodeBlockPos(p + size - v3s16(1,1,1));
vm->initialEmerge(bp1, bp2);
u32 i = 0;
for (s16 z = 0; z != size.Z; z++)
for (s16 y = 0; y != size.Y; y++) {
u32 vi = vm->m_area.index(p.X, p.Y + y, p.Z + z);
for (s16 x = 0; x != size.X; x++, i++, vi++) {
if (!vm->m_area.contains(vi))
continue;
if (schematic[i].param1 && myrand_range(1, 256) > schematic[i].param1)
continue;
vm->m_data[vi] = schematic[i];
vm->m_data[vi].param1 = 0;
}
}
std::map<v3s16, MapBlock *> lighting_modified_blocks;
std::map<v3s16, MapBlock *> modified_blocks;
vm->blitBackAll(&modified_blocks);
// TODO: Optimize this by using Mapgen::calcLighting() instead
lighting_modified_blocks.insert(modified_blocks.begin(), modified_blocks.end());
map->updateLighting(lighting_modified_blocks, modified_blocks);
MapEditEvent event;
event.type = MEET_OTHER;
for (std::map<v3s16, MapBlock *>::iterator
it = modified_blocks.begin();
it != modified_blocks.end(); ++it)
event.modified_blocks.insert(it->first);
map->dispatchEvent(&event);
}
bool DecoSchematic::loadSchematicFile() {
std::ifstream is(filename.c_str(), std::ios_base::binary);
u32 signature = readU32(is);
if (signature != 'MTSM') {
errorstream << "loadSchematicFile: invalid schematic "
"file" << std::endl;
return false;
}
u16 version = readU16(is);
if (version != 1) {
errorstream << "loadSchematicFile: unsupported schematic "
"file version" << std::endl;
return false;
}
size = readV3S16(is);
int nodecount = size.X * size.Y * size.Z;
u16 nidmapcount = readU16(is);
node_names = new std::vector<std::string>;
for (int i = 0; i != nidmapcount; i++) {
std::string name = deSerializeString(is);
node_names->push_back(name);
}
delete schematic;
schematic = new MapNode[nodecount];
MapNode::deSerializeBulk(is, SER_FMT_VER_HIGHEST, schematic,
nodecount, 2, 2, true);
return true;
}
/*
Minetest Schematic File Format
All values are stored in big-endian byte order.
[u32] signature: 'MTSM'
[u16] version: 1
[u16] size X
[u16] size Y
[u16] size Z
[Name-ID table] Name ID Mapping Table
[u16] name-id count
For each name-id mapping:
[u16] name length
[u8[]] name
ZLib deflated {
For each node in schematic: (for z, y, x)
[u16] content
For each node in schematic:
[u8] probability of occurance (param1)
For each node in schematic:
[u8] param2
}
*/
void DecoSchematic::saveSchematicFile(INodeDefManager *ndef) {
std::ofstream os(filename.c_str(), std::ios_base::binary);
writeU32(os, 'MTSM'); // signature
writeU16(os, 1); // version
writeV3S16(os, size); // schematic size
std::vector<content_t> usednodes;
int nodecount = size.X * size.Y * size.Z;
build_nnlist_and_update_ids(schematic, nodecount, &usednodes);
u16 numids = usednodes.size();
writeU16(os, numids); // name count
for (int i = 0; i != numids; i++)
os << serializeString(ndef->get(usednodes[i]).name); // node names
// compressed bulk node data
MapNode::serializeBulk(os, SER_FMT_VER_HIGHEST, schematic,
nodecount, 2, 2, true);
}
void build_nnlist_and_update_ids(MapNode *nodes, u32 nodecount,
std::vector<content_t> *usednodes) {
std::map<content_t, content_t> nodeidmap;
content_t numids = 0;
for (u32 i = 0; i != nodecount; i++) {
content_t id;
content_t c = nodes[i].getContent();
std::map<content_t, content_t>::const_iterator it = nodeidmap.find(c);
if (it == nodeidmap.end()) {
id = numids;
numids++;
usednodes->push_back(c);
nodeidmap.insert(std::make_pair(c, id));
} else {
id = it->second;
}
nodes[i].setContent(id);
}
}
bool DecoSchematic::getSchematicFromMap(Map *map, v3s16 p1, v3s16 p2) {
ManualMapVoxelManipulator *vm = new ManualMapVoxelManipulator(map);
v3s16 bp1 = getNodeBlockPos(p1);
v3s16 bp2 = getNodeBlockPos(p2);
vm->initialEmerge(bp1, bp2);
size = p2 - p1 + 1;
schematic = new MapNode[size.X * size.Y * size.Z];
u32 i = 0;
for (s16 z = p1.Z; z <= p2.Z; z++)
for (s16 y = p1.Y; y <= p2.Y; y++) {
u32 vi = vm->m_area.index(p1.X, y, z);
for (s16 x = p1.X; x <= p2.X; x++, i++, vi++) {
schematic[i] = vm->m_data[vi];
schematic[i].param1 = 0;
}
}
delete vm;
return true;
}
void DecoSchematic::applyProbabilities(std::vector<std::pair<v3s16, u8> > *plist, v3s16 p0) {
for (size_t i = 0; i != plist->size(); i++) {
v3s16 p = (*plist)[i].first - p0;
int index = p.Z * (size.Y * size.X) + p.Y * size.X + p.X;
if (index < size.Z * size.Y * size.X)
schematic[index].param1 = (*plist)[i].second;
}
}
///////////////////////////////////////////////////////////////////////////////
Mapgen::Mapgen() {
seed = 0;
water_level = 0;

38
src/mapgen.h
View File

@ -45,8 +45,14 @@ with this program; if not, write to the Free Software Foundation, Inc.,
// nodes isn't the specified node
#define OREFLAG_NODEISNT 0x04 // not yet implemented
/////////////////// Decoration flags
#define DECO_PLACE_CENTER_X 1
#define DECO_PLACE_CENTER_Y 2
#define DECO_PLACE_CENTER_Z 4
extern FlagDesc flagdesc_mapgen[];
extern FlagDesc flagdesc_ore[];
extern FlagDesc flagdesc_deco_schematic[];
class BiomeDefManager;
class Biome;
@ -57,6 +63,7 @@ class VoxelManipulator;
class INodeDefManager;
struct BlockMakeData;
class VoxelArea;
class Map;
struct MapgenParams {
std::string mg_name;
@ -207,6 +214,7 @@ public:
//std::list<CutoffData> cutoffs;
//JMutex cutoff_mutex;
Decoration();
virtual ~Decoration();
virtual void resolveNodeNames(INodeDefManager *ndef);
@ -241,12 +249,36 @@ public:
virtual std::string getName();
};
/*
class DecoSchematic : public Decoration {
public:
virtual void generate(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax);
std::string filename;
std::vector<std::string> *node_names;
std::vector<content_t> c_nodes;
u32 flags;
v3s16 size;
MapNode *schematic;
DecoSchematic();
~DecoSchematic();
void resolveNodeNames(INodeDefManager *ndef);
virtual void generate(Mapgen *mg, PseudoRandom *pr, s16 max_y,
s16 start_y, v3s16 p);
virtual int getHeight();
virtual std::string getName();
bool loadSchematicFile();
void saveSchematicFile(INodeDefManager *ndef);
bool getSchematicFromMap(Map *map, v3s16 p1, v3s16 p2);
void placeStructure(Map *map, v3s16 p);
void applyProbabilities(std::vector<std::pair<v3s16, u8> > *plist, v3s16 p0);
};
*/
void build_nnlist_and_update_ids(MapNode *nodes, u32 nodecount,
std::vector<content_t> *usednodes);
/*
class DecoLSystem : public Decoration {

49
src/script/common/c_content.cpp
View File

@ -30,6 +30,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
#include "log.h"
#include "tool.h"
#include "server.h"
#include "mapgen.h"
struct EnumString es_TileAnimationType[] =
{
@ -922,3 +923,51 @@ NoiseParams *read_noiseparams(lua_State *L, int index)
return np;
}
/******************************************************************************/
bool read_schematic(lua_State *L, int index, DecoSchematic *dschem, Server *server) {
if (index < 0)
index = lua_gettop(L) + 1 + index;
INodeDefManager *ndef = server->getNodeDefManager();
if (lua_istable(L, index)) {
lua_getfield(L, index, "size");
v3s16 size = read_v3s16(L, -1);
lua_pop(L, 1);
int numnodes = size.X * size.Y * size.Z;
MapNode *schemdata = new MapNode[numnodes];
int i = 0;
lua_getfield(L, index, "data");
luaL_checktype(L, -1, LUA_TTABLE);
lua_pushnil(L);
while (lua_next(L, -2)) {
if (i < numnodes)
schemdata[i] = readnode(L, -1, ndef);
i++;
lua_pop(L, 1);
}
dschem->size = size;
dschem->schematic = schemdata;
if (i != numnodes) {
errorstream << "read_schematic: incorrect number of "
"nodes provided in raw schematic data (got " << i <<
", expected " << numnodes << ")." << std::endl;
return false;
}
} else if (lua_isstring(L, index)) {
dschem->filename = std::string(lua_tostring(L, index));
} else {
errorstream << "read_schematic: missing schematic "
"filename or raw schematic data" << std::endl;
return false;
}
return true;
}

5
src/script/common/c_content.h
View File

@ -57,6 +57,7 @@ struct DigParams;
struct HitParams;
struct EnumString;
struct NoiseParams;
class DecoSchematic;
ContentFeatures read_content_features (lua_State *L, int index);
@ -139,6 +140,10 @@ bool string_to_enum (const EnumString *spec,
NoiseParams* read_noiseparams (lua_State *L, int index);
bool read_schematic (lua_State *L, int index,
DecoSchematic *dschem,
Server *server);
void luaentity_get (lua_State *L,u16 id);
extern struct EnumString es_TileAnimationType[];

112
src/script/lua_api/luaapi.cpp
View File

@ -101,6 +101,8 @@ bool ModApiBasic::Initialize(lua_State* L,int top) {
retval &= API_FCT(register_ore);
retval &= API_FCT(register_decoration);
retval &= API_FCT(create_schematic);
retval &= API_FCT(place_schematic);
return retval;
}
@ -701,8 +703,14 @@ int ModApiBasic::l_register_decoration(lua_State *L)
deco->c_place_on = CONTENT_IGNORE;
deco->place_on_name = getstringfield_default(L, index, "place_on", "ignore");
deco->sidelen = getintfield_default(L, index, "sidelen", 8);
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);
@ -743,7 +751,7 @@ int ModApiBasic::l_register_decoration(lua_State *L)
lua_pop(L, 1);
}
} else if (lua_isstring(L, -1)) {
dsimple->deco_name = std::string(lua_tostring(L, -1));
dsimple->deco_name = std::string(lua_tostring(L, -1));
} else {
dsimple->deco_name = std::string("air");
}
@ -758,8 +766,22 @@ int ModApiBasic::l_register_decoration(lua_State *L)
break; }
case DECO_SCHEMATIC: {
//DecoSchematic *decoschematic = (DecoSchematic *)deco;
DecoSchematic *dschem = (DecoSchematic *)deco;
dschem->flags = getflagsfield(L, index, "flags", flagdesc_deco_schematic);
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;
@ -767,13 +789,6 @@ int ModApiBasic::l_register_decoration(lua_State *L)
break; }
}
if (deco->sidelen <= 0) {
errorstream << "register_decoration: sidelen must be "
"greater than 0" << std::endl;
delete deco;
return 0;
}
emerge->decorations.push_back(deco);
verbosestream << "register_decoration: decoration '" << deco->getName()
@ -781,5 +796,82 @@ int ModApiBasic::l_register_decoration(lua_State *L)
return 0;
}
// create_schematic(p1, p2, probability_list, filename)
int ModApiBasic::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> > probability_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);
int prob = getintfield_default(L, -1, "prob", 0);
if (prob < 0 || prob >= UCHAR_MAX) {
errorstream << "create_schematic: probability value of "
<< prob << " at " << PP(pos) << " out of range" << std::endl;
} else {
probability_list.push_back(std::make_pair(pos, (u8)prob));
}
}
lua_pop(L, 1);
}
}
dschem.filename = std::string(lua_tostring(L, 4));
if (!dschem.getSchematicFromMap(map, p1, p2)) {
errorstream << "create_schematic: failed to get schematic "
"from map" << std::endl;
return 0;
}
dschem.applyProbabilities(&probability_list, p1);
dschem.saveSchematicFile(ndef);
actionstream << "create_schematic: saved schematic file '" << dschem.filename << "'." << std::endl;
return 1;
}
// place_schematic(p, schematic)
int ModApiBasic::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;
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;
}
ModApiBasic modapibasic_prototype;

6
src/script/lua_api/luaapi.h
View File

@ -133,6 +133,12 @@ private:
// register_decoration(deco)
static int l_register_decoration(lua_State *L);
// create_schematic(p1, p2, filename)
static int l_create_schematic(lua_State *L);
// place_schematic(p, filename)
static int l_place_schematic(lua_State *L);
static struct EnumString es_OreType[];
static struct EnumString es_DecorationType[];

16
src/util/numeric.h
View File

@ -140,6 +140,22 @@ inline v3s16 arealim(v3s16 p, s16 d)
return p;
}
// The naive swap performs better than the xor version
#define SWAP(t, x, y) do { \
t temp = x; \
x = y; \
y = temp; \
} while (0)
inline void sortBoxVerticies(v3s16 &p1, v3s16 &p2) {
if (p1.X > p2.X)
SWAP(s16, p1.X, p2.X);
if (p1.Y > p2.Y)
SWAP(s16, p1.Y, p2.Y);
if (p1.Z > p2.Z)
SWAP(s16, p1.Z, p2.Z);
}
/*
See test.cpp for example cases.