minetest/src/script/lua_api/l_env.cpp

1383 lines
34 KiB
C++

/*
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 <algorithm>
#include "lua_api/l_env.h"
#include "lua_api/l_internal.h"
#include "lua_api/l_nodemeta.h"
#include "lua_api/l_nodetimer.h"
#include "lua_api/l_noise.h"
#include "lua_api/l_vmanip.h"
#include "common/c_converter.h"
#include "common/c_content.h"
#include "scripting_server.h"
#include "environment.h"
#include "mapblock.h"
#include "server.h"
#include "nodedef.h"
#include "daynightratio.h"
#include "util/pointedthing.h"
#include "mapgen/treegen.h"
#include "emerge.h"
#include "pathfinder.h"
#include "face_position_cache.h"
#include "remoteplayer.h"
#include "server/luaentity_sao.h"
#include "server/player_sao.h"
#include "util/string.h"
#include "translation.h"
#ifndef SERVER
#include "client/client.h"
#endif
struct EnumString ModApiEnvMod::es_ClearObjectsMode[] =
{
{CLEAR_OBJECTS_MODE_FULL, "full"},
{CLEAR_OBJECTS_MODE_QUICK, "quick"},
{0, NULL},
};
///////////////////////////////////////////////////////////////////////////////
void LuaABM::trigger(ServerEnvironment *env, v3s16 p, MapNode n,
u32 active_object_count, u32 active_object_count_wider)
{
ServerScripting *scriptIface = env->getScriptIface();
scriptIface->realityCheck();
lua_State *L = scriptIface->getStack();
sanity_check(lua_checkstack(L, 20));
StackUnroller stack_unroller(L);
int error_handler = PUSH_ERROR_HANDLER(L);
// Get registered_abms
lua_getglobal(L, "core");
lua_getfield(L, -1, "registered_abms");
luaL_checktype(L, -1, LUA_TTABLE);
lua_remove(L, -2); // Remove core
// Get registered_abms[m_id]
lua_pushinteger(L, m_id);
lua_gettable(L, -2);
if(lua_isnil(L, -1))
FATAL_ERROR("");
lua_remove(L, -2); // Remove registered_abms
scriptIface->setOriginFromTable(-1);
// Call action
luaL_checktype(L, -1, LUA_TTABLE);
lua_getfield(L, -1, "action");
luaL_checktype(L, -1, LUA_TFUNCTION);
lua_remove(L, -2); // Remove registered_abms[m_id]
push_v3s16(L, p);
pushnode(L, n, env->getGameDef()->ndef());
lua_pushnumber(L, active_object_count);
lua_pushnumber(L, active_object_count_wider);
int result = lua_pcall(L, 4, 0, error_handler);
if (result)
scriptIface->scriptError(result, "LuaABM::trigger");
lua_pop(L, 1); // Pop error handler
}
void LuaLBM::trigger(ServerEnvironment *env, v3s16 p, MapNode n)
{
ServerScripting *scriptIface = env->getScriptIface();
scriptIface->realityCheck();
lua_State *L = scriptIface->getStack();
sanity_check(lua_checkstack(L, 20));
StackUnroller stack_unroller(L);
int error_handler = PUSH_ERROR_HANDLER(L);
// Get registered_lbms
lua_getglobal(L, "core");
lua_getfield(L, -1, "registered_lbms");
luaL_checktype(L, -1, LUA_TTABLE);
lua_remove(L, -2); // Remove core
// Get registered_lbms[m_id]
lua_pushinteger(L, m_id);
lua_gettable(L, -2);
FATAL_ERROR_IF(lua_isnil(L, -1), "Entry with given id not found in registered_lbms table");
lua_remove(L, -2); // Remove registered_lbms
scriptIface->setOriginFromTable(-1);
// Call action
luaL_checktype(L, -1, LUA_TTABLE);
lua_getfield(L, -1, "action");
luaL_checktype(L, -1, LUA_TFUNCTION);
lua_remove(L, -2); // Remove registered_lbms[m_id]
push_v3s16(L, p);
pushnode(L, n, env->getGameDef()->ndef());
int result = lua_pcall(L, 2, 0, error_handler);
if (result)
scriptIface->scriptError(result, "LuaLBM::trigger");
lua_pop(L, 1); // Pop error handler
}
int LuaRaycast::l_next(lua_State *L)
{
GET_PLAIN_ENV_PTR;
bool csm = false;
#ifndef SERVER
csm = getClient(L) != nullptr;
#endif
LuaRaycast *o = checkobject(L, 1);
PointedThing pointed;
env->continueRaycast(&o->state, &pointed);
if (pointed.type == POINTEDTHING_NOTHING)
lua_pushnil(L);
else
push_pointed_thing(L, pointed, csm, true);
return 1;
}
int LuaRaycast::create_object(lua_State *L)
{
NO_MAP_LOCK_REQUIRED;
bool objects = true;
bool liquids = false;
v3f pos1 = checkFloatPos(L, 1);
v3f pos2 = checkFloatPos(L, 2);
if (lua_isboolean(L, 3)) {
objects = readParam<bool>(L, 3);
}
if (lua_isboolean(L, 4)) {
liquids = readParam<bool>(L, 4);
}
LuaRaycast *o = new LuaRaycast(core::line3d<f32>(pos1, pos2),
objects, liquids);
*(void **) (lua_newuserdata(L, sizeof(void *))) = o;
luaL_getmetatable(L, className);
lua_setmetatable(L, -2);
return 1;
}
LuaRaycast *LuaRaycast::checkobject(lua_State *L, int narg)
{
NO_MAP_LOCK_REQUIRED;
luaL_checktype(L, narg, LUA_TUSERDATA);
void *ud = luaL_checkudata(L, narg, className);
if (!ud)
luaL_typerror(L, narg, className);
return *(LuaRaycast **) ud;
}
int LuaRaycast::gc_object(lua_State *L)
{
LuaRaycast *o = *(LuaRaycast **) (lua_touserdata(L, 1));
delete o;
return 0;
}
void LuaRaycast::Register(lua_State *L)
{
lua_newtable(L);
int methodtable = lua_gettop(L);
luaL_newmetatable(L, className);
int metatable = lua_gettop(L);
lua_pushliteral(L, "__metatable");
lua_pushvalue(L, methodtable);
lua_settable(L, metatable);
lua_pushliteral(L, "__index");
lua_pushvalue(L, methodtable);
lua_settable(L, metatable);
lua_pushliteral(L, "__gc");
lua_pushcfunction(L, gc_object);
lua_settable(L, metatable);
lua_pushliteral(L, "__call");
lua_pushcfunction(L, l_next);
lua_settable(L, metatable);
lua_pop(L, 1);
luaL_openlib(L, 0, methods, 0);
lua_pop(L, 1);
lua_register(L, className, create_object);
}
const char LuaRaycast::className[] = "Raycast";
const luaL_Reg LuaRaycast::methods[] =
{
luamethod(LuaRaycast, next),
{ 0, 0 }
};
void LuaEmergeAreaCallback(v3s16 blockpos, EmergeAction action, void *param)
{
ScriptCallbackState *state = (ScriptCallbackState *)param;
assert(state != NULL);
assert(state->script != NULL);
assert(state->refcount > 0);
// state must be protected by envlock
Server *server = state->script->getServer();
MutexAutoLock envlock(server->m_env_mutex);
state->refcount--;
state->script->on_emerge_area_completion(blockpos, action, state);
if (state->refcount == 0)
delete state;
}
// Exported functions
// set_node(pos, node)
// pos = {x=num, y=num, z=num}
int ModApiEnvMod::l_set_node(lua_State *L)
{
GET_ENV_PTR;
const NodeDefManager *ndef = env->getGameDef()->ndef();
// parameters
v3s16 pos = read_v3s16(L, 1);
MapNode n = readnode(L, 2, ndef);
// Do it
bool succeeded = env->setNode(pos, n);
lua_pushboolean(L, succeeded);
return 1;
}
// bulk_set_node([pos1, pos2, ...], node)
// pos = {x=num, y=num, z=num}
int ModApiEnvMod::l_bulk_set_node(lua_State *L)
{
GET_ENV_PTR;
const NodeDefManager *ndef = env->getGameDef()->ndef();
// parameters
if (!lua_istable(L, 1)) {
return 0;
}
s32 len = lua_objlen(L, 1);
if (len == 0) {
lua_pushboolean(L, true);
return 1;
}
MapNode n = readnode(L, 2, ndef);
// Do it
bool succeeded = true;
for (s32 i = 1; i <= len; i++) {
lua_rawgeti(L, 1, i);
if (!env->setNode(read_v3s16(L, -1), n))
succeeded = false;
lua_pop(L, 1);
}
lua_pushboolean(L, succeeded);
return 1;
}
int ModApiEnvMod::l_add_node(lua_State *L)
{
return l_set_node(L);
}
// remove_node(pos)
// pos = {x=num, y=num, z=num}
int ModApiEnvMod::l_remove_node(lua_State *L)
{
GET_ENV_PTR;
// parameters
v3s16 pos = read_v3s16(L, 1);
// Do it
bool succeeded = env->removeNode(pos);
lua_pushboolean(L, succeeded);
return 1;
}
// swap_node(pos, node)
// pos = {x=num, y=num, z=num}
int ModApiEnvMod::l_swap_node(lua_State *L)
{
GET_ENV_PTR;
const NodeDefManager *ndef = env->getGameDef()->ndef();
// parameters
v3s16 pos = read_v3s16(L, 1);
MapNode n = readnode(L, 2, ndef);
// Do it
bool succeeded = env->swapNode(pos, n);
lua_pushboolean(L, succeeded);
return 1;
}
// get_node(pos)
// pos = {x=num, y=num, z=num}
int ModApiEnvMod::l_get_node(lua_State *L)
{
GET_ENV_PTR;
// pos
v3s16 pos = read_v3s16(L, 1);
// Do it
MapNode n = env->getMap().getNode(pos);
// Return node
pushnode(L, n, env->getGameDef()->ndef());
return 1;
}
// get_node_or_nil(pos)
// pos = {x=num, y=num, z=num}
int ModApiEnvMod::l_get_node_or_nil(lua_State *L)
{
GET_ENV_PTR;
// pos
v3s16 pos = read_v3s16(L, 1);
// Do it
bool pos_ok;
MapNode n = env->getMap().getNode(pos, &pos_ok);
if (pos_ok) {
// Return node
pushnode(L, n, env->getGameDef()->ndef());
} else {
lua_pushnil(L);
}
return 1;
}
// get_node_light(pos, timeofday)
// pos = {x=num, y=num, z=num}
// timeofday: nil = current time, 0 = night, 0.5 = day
int ModApiEnvMod::l_get_node_light(lua_State *L)
{
GET_PLAIN_ENV_PTR;
// Do it
v3s16 pos = read_v3s16(L, 1);
u32 time_of_day = env->getTimeOfDay();
if(lua_isnumber(L, 2))
time_of_day = 24000.0 * lua_tonumber(L, 2);
time_of_day %= 24000;
u32 dnr = time_to_daynight_ratio(time_of_day, true);
bool is_position_ok;
MapNode n = env->getMap().getNode(pos, &is_position_ok);
if (is_position_ok) {
const NodeDefManager *ndef = env->getGameDef()->ndef();
lua_pushinteger(L, n.getLightBlend(dnr, ndef));
} else {
lua_pushnil(L);
}
return 1;
}
// place_node(pos, node)
// pos = {x=num, y=num, z=num}
int ModApiEnvMod::l_place_node(lua_State *L)
{
GET_ENV_PTR;
ScriptApiItem *scriptIfaceItem = getScriptApi<ScriptApiItem>(L);
Server *server = getServer(L);
const NodeDefManager *ndef = server->ndef();
IItemDefManager *idef = server->idef();
v3s16 pos = read_v3s16(L, 1);
MapNode n = readnode(L, 2, ndef);
// Don't attempt to load non-loaded area as of now
MapNode n_old = env->getMap().getNode(pos);
if(n_old.getContent() == CONTENT_IGNORE){
lua_pushboolean(L, false);
return 1;
}
// Create item to place
ItemStack item(ndef->get(n).name, 1, 0, idef);
// Make pointed position
PointedThing pointed;
pointed.type = POINTEDTHING_NODE;
pointed.node_abovesurface = pos;
pointed.node_undersurface = pos + v3s16(0,-1,0);
// Place it with a NULL placer (appears in Lua as nil)
bool success = scriptIfaceItem->item_OnPlace(item, nullptr, pointed);
lua_pushboolean(L, success);
return 1;
}
// dig_node(pos)
// pos = {x=num, y=num, z=num}
int ModApiEnvMod::l_dig_node(lua_State *L)
{
GET_ENV_PTR;
ScriptApiNode *scriptIfaceNode = getScriptApi<ScriptApiNode>(L);
v3s16 pos = read_v3s16(L, 1);
// Don't attempt to load non-loaded area as of now
MapNode n = env->getMap().getNode(pos);
if(n.getContent() == CONTENT_IGNORE){
lua_pushboolean(L, false);
return 1;
}
// Dig it out with a NULL digger (appears in Lua as a
// non-functional ObjectRef)
bool success = scriptIfaceNode->node_on_dig(pos, n, NULL);
lua_pushboolean(L, success);
return 1;
}
// punch_node(pos)
// pos = {x=num, y=num, z=num}
int ModApiEnvMod::l_punch_node(lua_State *L)
{
GET_ENV_PTR;
ScriptApiNode *scriptIfaceNode = getScriptApi<ScriptApiNode>(L);
v3s16 pos = read_v3s16(L, 1);
// Don't attempt to load non-loaded area as of now
MapNode n = env->getMap().getNode(pos);
if(n.getContent() == CONTENT_IGNORE){
lua_pushboolean(L, false);
return 1;
}
// Punch it with a NULL puncher (appears in Lua as a non-functional
// ObjectRef)
bool success = scriptIfaceNode->node_on_punch(pos, n, NULL, PointedThing());
lua_pushboolean(L, success);
return 1;
}
// get_node_max_level(pos)
// pos = {x=num, y=num, z=num}
int ModApiEnvMod::l_get_node_max_level(lua_State *L)
{
GET_PLAIN_ENV_PTR;
v3s16 pos = read_v3s16(L, 1);
MapNode n = env->getMap().getNode(pos);
lua_pushnumber(L, n.getMaxLevel(env->getGameDef()->ndef()));
return 1;
}
// get_node_level(pos)
// pos = {x=num, y=num, z=num}
int ModApiEnvMod::l_get_node_level(lua_State *L)
{
GET_PLAIN_ENV_PTR;
v3s16 pos = read_v3s16(L, 1);
MapNode n = env->getMap().getNode(pos);
lua_pushnumber(L, n.getLevel(env->getGameDef()->ndef()));
return 1;
}
// set_node_level(pos, level)
// pos = {x=num, y=num, z=num}
// level: 0..63
int ModApiEnvMod::l_set_node_level(lua_State *L)
{
GET_ENV_PTR;
v3s16 pos = read_v3s16(L, 1);
u8 level = 1;
if(lua_isnumber(L, 2))
level = lua_tonumber(L, 2);
MapNode n = env->getMap().getNode(pos);
lua_pushnumber(L, n.setLevel(env->getGameDef()->ndef(), level));
env->setNode(pos, n);
return 1;
}
// add_node_level(pos, level)
// pos = {x=num, y=num, z=num}
// level: 0..63
int ModApiEnvMod::l_add_node_level(lua_State *L)
{
GET_ENV_PTR;
v3s16 pos = read_v3s16(L, 1);
u8 level = 1;
if(lua_isnumber(L, 2))
level = lua_tonumber(L, 2);
MapNode n = env->getMap().getNode(pos);
lua_pushnumber(L, n.addLevel(env->getGameDef()->ndef(), level));
env->setNode(pos, n);
return 1;
}
// find_nodes_with_meta(pos1, pos2)
int ModApiEnvMod::l_find_nodes_with_meta(lua_State *L)
{
GET_PLAIN_ENV_PTR;
std::vector<v3s16> positions = env->getMap().findNodesWithMetadata(
check_v3s16(L, 1), check_v3s16(L, 2));
lua_createtable(L, positions.size(), 0);
for (size_t i = 0; i != positions.size(); i++) {
push_v3s16(L, positions[i]);
lua_rawseti(L, -2, i + 1);
}
return 1;
}
// get_meta(pos)
int ModApiEnvMod::l_get_meta(lua_State *L)
{
GET_ENV_PTR;
// Do it
v3s16 p = read_v3s16(L, 1);
NodeMetaRef::create(L, p, env);
return 1;
}
// get_node_timer(pos)
int ModApiEnvMod::l_get_node_timer(lua_State *L)
{
GET_ENV_PTR;
// Do it
v3s16 p = read_v3s16(L, 1);
NodeTimerRef::create(L, p, &env->getServerMap());
return 1;
}
// add_entity(pos, entityname, [staticdata]) -> ObjectRef or nil
// pos = {x=num, y=num, z=num}
int ModApiEnvMod::l_add_entity(lua_State *L)
{
GET_ENV_PTR;
v3f pos = checkFloatPos(L, 1);
const char *name = luaL_checkstring(L, 2);
const char *staticdata = luaL_optstring(L, 3, "");
ServerActiveObject *obj = new LuaEntitySAO(env, pos, name, staticdata);
int objectid = env->addActiveObject(obj);
// If failed to add, return nothing (reads as nil)
if(objectid == 0)
return 0;
// If already deleted (can happen in on_activate), return nil
if (obj->isGone())
return 0;
getScriptApiBase(L)->objectrefGetOrCreate(L, obj);
return 1;
}
// add_item(pos, itemstack or itemstring or table) -> ObjectRef or nil
// pos = {x=num, y=num, z=num}
int ModApiEnvMod::l_add_item(lua_State *L)
{
GET_ENV_PTR;
// pos
//v3f pos = checkFloatPos(L, 1);
// item
ItemStack item = read_item(L, 2,getServer(L)->idef());
if(item.empty() || !item.isKnown(getServer(L)->idef()))
return 0;
int error_handler = PUSH_ERROR_HANDLER(L);
// Use spawn_item to spawn a __builtin:item
lua_getglobal(L, "core");
lua_getfield(L, -1, "spawn_item");
lua_remove(L, -2); // Remove core
if(lua_isnil(L, -1))
return 0;
lua_pushvalue(L, 1);
lua_pushstring(L, item.getItemString().c_str());
PCALL_RESL(L, lua_pcall(L, 2, 1, error_handler));
lua_remove(L, error_handler);
return 1;
}
// get_connected_players()
int ModApiEnvMod::l_get_connected_players(lua_State *L)
{
ServerEnvironment *env = (ServerEnvironment *) getEnv(L);
if (!env) {
log_deprecated(L, "Calling get_connected_players() at mod load time"
" is deprecated");
lua_createtable(L, 0, 0);
return 1;
}
lua_createtable(L, env->getPlayerCount(), 0);
u32 i = 0;
for (RemotePlayer *player : env->getPlayers()) {
if (player->getPeerId() == PEER_ID_INEXISTENT)
continue;
PlayerSAO *sao = player->getPlayerSAO();
if (sao && !sao->isGone()) {
getScriptApiBase(L)->objectrefGetOrCreate(L, sao);
lua_rawseti(L, -2, ++i);
}
}
return 1;
}
// get_player_by_name(name)
int ModApiEnvMod::l_get_player_by_name(lua_State *L)
{
GET_ENV_PTR;
// Do it
const char *name = luaL_checkstring(L, 1);
RemotePlayer *player = env->getPlayer(name);
if (!player || player->getPeerId() == PEER_ID_INEXISTENT)
return 0;
PlayerSAO *sao = player->getPlayerSAO();
if (!sao || sao->isGone())
return 0;
// Put player on stack
getScriptApiBase(L)->objectrefGetOrCreate(L, sao);
return 1;
}
// get_objects_inside_radius(pos, radius)
int ModApiEnvMod::l_get_objects_inside_radius(lua_State *L)
{
GET_ENV_PTR;
ScriptApiBase *script = getScriptApiBase(L);
// Do it
v3f pos = checkFloatPos(L, 1);
float radius = readParam<float>(L, 2) * BS;
std::vector<ServerActiveObject *> objs;
auto include_obj_cb = [](ServerActiveObject *obj){ return !obj->isGone(); };
env->getObjectsInsideRadius(objs, pos, radius, include_obj_cb);
int i = 0;
lua_createtable(L, objs.size(), 0);
for (const auto obj : objs) {
// Insert object reference into table
script->objectrefGetOrCreate(L, obj);
lua_rawseti(L, -2, ++i);
}
return 1;
}
// set_timeofday(val)
// val = 0...1
int ModApiEnvMod::l_set_timeofday(lua_State *L)
{
GET_ENV_PTR;
// Do it
float timeofday_f = readParam<float>(L, 1);
sanity_check(timeofday_f >= 0.0 && timeofday_f <= 1.0);
int timeofday_mh = (int)(timeofday_f * 24000.0);
// This should be set directly in the environment but currently
// such changes aren't immediately sent to the clients, so call
// the server instead.
//env->setTimeOfDay(timeofday_mh);
getServer(L)->setTimeOfDay(timeofday_mh);
return 0;
}
// get_timeofday() -> 0...1
int ModApiEnvMod::l_get_timeofday(lua_State *L)
{
GET_PLAIN_ENV_PTR;
// Do it
int timeofday_mh = env->getTimeOfDay();
float timeofday_f = (float)timeofday_mh / 24000.0f;
lua_pushnumber(L, timeofday_f);
return 1;
}
// get_day_count() -> int
int ModApiEnvMod::l_get_day_count(lua_State *L)
{
GET_PLAIN_ENV_PTR;
lua_pushnumber(L, env->getDayCount());
return 1;
}
// get_gametime()
int ModApiEnvMod::l_get_gametime(lua_State *L)
{
GET_ENV_PTR;
int game_time = env->getGameTime();
lua_pushnumber(L, game_time);
return 1;
}
// find_node_near(pos, radius, nodenames, search_center) -> pos or nil
// nodenames: eg. {"ignore", "group:tree"} or "default:dirt"
int ModApiEnvMod::l_find_node_near(lua_State *L)
{
GET_PLAIN_ENV_PTR;
const NodeDefManager *ndef = env->getGameDef()->ndef();
v3s16 pos = read_v3s16(L, 1);
int radius = luaL_checkinteger(L, 2);
std::vector<content_t> filter;
if (lua_istable(L, 3)) {
lua_pushnil(L);
while (lua_next(L, 3) != 0) {
// key at index -2 and value at index -1
luaL_checktype(L, -1, LUA_TSTRING);
ndef->getIds(readParam<std::string>(L, -1), filter);
// removes value, keeps key for next iteration
lua_pop(L, 1);
}
} else if (lua_isstring(L, 3)) {
ndef->getIds(readParam<std::string>(L, 3), filter);
}
int start_radius = (lua_isboolean(L, 4) && readParam<bool>(L, 4)) ? 0 : 1;
#ifndef SERVER
// Client API limitations
if (getClient(L))
radius = getClient(L)->CSMClampRadius(pos, radius);
#endif
for (int d = start_radius; d <= radius; d++) {
std::vector<v3s16> list = FacePositionCache::getFacePositions(d);
for (const v3s16 &i : list) {
v3s16 p = pos + i;
content_t c = env->getMap().getNode(p).getContent();
if (CONTAINS(filter, c)) {
push_v3s16(L, p);
return 1;
}
}
}
return 0;
}
// find_nodes_in_area(minp, maxp, nodenames) -> list of positions
// nodenames: eg. {"ignore", "group:tree"} or "default:dirt"
int ModApiEnvMod::l_find_nodes_in_area(lua_State *L)
{
GET_PLAIN_ENV_PTR;
v3s16 minp = read_v3s16(L, 1);
v3s16 maxp = read_v3s16(L, 2);
sortBoxVerticies(minp, maxp);
const NodeDefManager *ndef = env->getGameDef()->ndef();
#ifndef SERVER
if (getClient(L)) {
minp = getClient(L)->CSMClampPos(minp);
maxp = getClient(L)->CSMClampPos(maxp);
}
#endif
v3s16 cube = maxp - minp + 1;
// Volume limit equal to 8 default mapchunks, (80 * 2) ^ 3 = 4,096,000
if ((u64)cube.X * (u64)cube.Y * (u64)cube.Z > 4096000) {
luaL_error(L, "find_nodes_in_area(): area volume"
" exceeds allowed value of 4096000");
return 0;
}
std::vector<content_t> filter;
if (lua_istable(L, 3)) {
lua_pushnil(L);
while (lua_next(L, 3) != 0) {
// key at index -2 and value at index -1
luaL_checktype(L, -1, LUA_TSTRING);
ndef->getIds(readParam<std::string>(L, -1), filter);
// removes value, keeps key for next iteration
lua_pop(L, 1);
}
} else if (lua_isstring(L, 3)) {
ndef->getIds(readParam<std::string>(L, 3), filter);
}
std::vector<u32> individual_count;
individual_count.resize(filter.size());
lua_newtable(L);
u64 i = 0;
for (s16 x = minp.X; x <= maxp.X; x++)
for (s16 y = minp.Y; y <= maxp.Y; y++)
for (s16 z = minp.Z; z <= maxp.Z; z++) {
v3s16 p(x, y, z);
content_t c = env->getMap().getNode(p).getContent();
std::vector<content_t>::iterator it = std::find(filter.begin(), filter.end(), c);
if (it != filter.end()) {
push_v3s16(L, p);
lua_rawseti(L, -2, ++i);
u32 filt_index = it - filter.begin();
individual_count[filt_index]++;
}
}
lua_newtable(L);
for (u32 i = 0; i < filter.size(); i++) {
lua_pushnumber(L, individual_count[i]);
lua_setfield(L, -2, ndef->get(filter[i]).name.c_str());
}
return 2;
}
// find_nodes_in_area_under_air(minp, maxp, nodenames) -> list of positions
// nodenames: e.g. {"ignore", "group:tree"} or "default:dirt"
int ModApiEnvMod::l_find_nodes_in_area_under_air(lua_State *L)
{
/* Note: A similar but generalized (and therefore slower) version of this
* function could be created -- e.g. find_nodes_in_area_under -- which
* would accept a node name (or ID?) or list of names that the "above node"
* should be.
* TODO
*/
GET_PLAIN_ENV_PTR;
v3s16 minp = read_v3s16(L, 1);
v3s16 maxp = read_v3s16(L, 2);
sortBoxVerticies(minp, maxp);
const NodeDefManager *ndef = env->getGameDef()->ndef();
#ifndef SERVER
if (getClient(L)) {
minp = getClient(L)->CSMClampPos(minp);
maxp = getClient(L)->CSMClampPos(maxp);
}
#endif
v3s16 cube = maxp - minp + 1;
// Volume limit equal to 8 default mapchunks, (80 * 2) ^ 3 = 4,096,000
if ((u64)cube.X * (u64)cube.Y * (u64)cube.Z > 4096000) {
luaL_error(L, "find_nodes_in_area_under_air(): area volume"
" exceeds allowed value of 4096000");
return 0;
}
std::vector<content_t> filter;
if (lua_istable(L, 3)) {
lua_pushnil(L);
while (lua_next(L, 3) != 0) {
// key at index -2 and value at index -1
luaL_checktype(L, -1, LUA_TSTRING);
ndef->getIds(readParam<std::string>(L, -1), filter);
// removes value, keeps key for next iteration
lua_pop(L, 1);
}
} else if (lua_isstring(L, 3)) {
ndef->getIds(readParam<std::string>(L, 3), filter);
}
lua_newtable(L);
u64 i = 0;
for (s16 x = minp.X; x <= maxp.X; x++)
for (s16 z = minp.Z; z <= maxp.Z; z++) {
s16 y = minp.Y;
v3s16 p(x, y, z);
content_t c = env->getMap().getNode(p).getContent();
for (; y <= maxp.Y; y++) {
v3s16 psurf(x, y + 1, z);
content_t csurf = env->getMap().getNode(psurf).getContent();
if (c != CONTENT_AIR && csurf == CONTENT_AIR &&
CONTAINS(filter, c)) {
push_v3s16(L, v3s16(x, y, z));
lua_rawseti(L, -2, ++i);
}
c = csurf;
}
}
return 1;
}
// get_perlin(seeddiff, octaves, persistence, scale)
// returns world-specific PerlinNoise
int ModApiEnvMod::l_get_perlin(lua_State *L)
{
GET_ENV_PTR_NO_MAP_LOCK;
NoiseParams params;
if (lua_istable(L, 1)) {
read_noiseparams(L, 1, &params);
} else {
params.seed = luaL_checkint(L, 1);
params.octaves = luaL_checkint(L, 2);
params.persist = readParam<float>(L, 3);
params.spread = v3f(1, 1, 1) * readParam<float>(L, 4);
}
params.seed += (int)env->getServerMap().getSeed();
LuaPerlinNoise *n = new LuaPerlinNoise(&params);
*(void **)(lua_newuserdata(L, sizeof(void *))) = n;
luaL_getmetatable(L, "PerlinNoise");
lua_setmetatable(L, -2);
return 1;
}
// get_perlin_map(noiseparams, size)
// returns world-specific PerlinNoiseMap
int ModApiEnvMod::l_get_perlin_map(lua_State *L)
{
GET_ENV_PTR_NO_MAP_LOCK;
NoiseParams np;
if (!read_noiseparams(L, 1, &np))
return 0;
v3s16 size = read_v3s16(L, 2);
s32 seed = (s32)(env->getServerMap().getSeed());
LuaPerlinNoiseMap *n = new LuaPerlinNoiseMap(&np, seed, size);
*(void **)(lua_newuserdata(L, sizeof(void *))) = n;
luaL_getmetatable(L, "PerlinNoiseMap");
lua_setmetatable(L, -2);
return 1;
}
// get_voxel_manip()
// returns voxel manipulator
int ModApiEnvMod::l_get_voxel_manip(lua_State *L)
{
GET_ENV_PTR;
Map *map = &(env->getMap());
LuaVoxelManip *o = (lua_istable(L, 1) && lua_istable(L, 2)) ?
new LuaVoxelManip(map, read_v3s16(L, 1), read_v3s16(L, 2)) :
new LuaVoxelManip(map);
*(void **)(lua_newuserdata(L, sizeof(void *))) = o;
luaL_getmetatable(L, "VoxelManip");
lua_setmetatable(L, -2);
return 1;
}
// clear_objects([options])
// clear all objects in the environment
// where options = {mode = "full" or "quick"}
int ModApiEnvMod::l_clear_objects(lua_State *L)
{
GET_ENV_PTR;
ClearObjectsMode mode = CLEAR_OBJECTS_MODE_QUICK;
if (lua_istable(L, 1)) {
mode = (ClearObjectsMode)getenumfield(L, 1, "mode",
ModApiEnvMod::es_ClearObjectsMode, mode);
}
env->clearObjects(mode);
return 0;
}
// line_of_sight(pos1, pos2) -> true/false, pos
int ModApiEnvMod::l_line_of_sight(lua_State *L)
{
GET_PLAIN_ENV_PTR;
// read position 1 from lua
v3f pos1 = checkFloatPos(L, 1);
// read position 2 from lua
v3f pos2 = checkFloatPos(L, 2);
v3s16 p;
bool success = env->line_of_sight(pos1, pos2, &p);
lua_pushboolean(L, success);
if (!success) {
push_v3s16(L, p);
return 2;
}
return 1;
}
// fix_light(p1, p2)
int ModApiEnvMod::l_fix_light(lua_State *L)
{
GET_ENV_PTR;
v3s16 blockpos1 = getContainerPos(read_v3s16(L, 1), MAP_BLOCKSIZE);
v3s16 blockpos2 = getContainerPos(read_v3s16(L, 2), MAP_BLOCKSIZE);
ServerMap &map = env->getServerMap();
std::map<v3s16, MapBlock *> modified_blocks;
bool success = true;
v3s16 blockpos;
for (blockpos.X = blockpos1.X; blockpos.X <= blockpos2.X; blockpos.X++)
for (blockpos.Y = blockpos1.Y; blockpos.Y <= blockpos2.Y; blockpos.Y++)
for (blockpos.Z = blockpos1.Z; blockpos.Z <= blockpos2.Z; blockpos.Z++) {
success = success & map.repairBlockLight(blockpos, &modified_blocks);
}
if (!modified_blocks.empty()) {
MapEditEvent event;
event.type = MEET_OTHER;
for (auto &modified_block : modified_blocks)
event.modified_blocks.insert(modified_block.first);
map.dispatchEvent(event);
}
lua_pushboolean(L, success);
return 1;
}
int ModApiEnvMod::l_raycast(lua_State *L)
{
return LuaRaycast::create_object(L);
}
// load_area(p1, [p2])
// load mapblocks in area p1..p2, but do not generate map
int ModApiEnvMod::l_load_area(lua_State *L)
{
GET_ENV_PTR;
MAP_LOCK_REQUIRED;
Map *map = &(env->getMap());
v3s16 bp1 = getNodeBlockPos(check_v3s16(L, 1));
if (!lua_istable(L, 2)) {
map->emergeBlock(bp1);
} else {
v3s16 bp2 = getNodeBlockPos(check_v3s16(L, 2));
sortBoxVerticies(bp1, bp2);
for (s16 z = bp1.Z; z <= bp2.Z; z++)
for (s16 y = bp1.Y; y <= bp2.Y; y++)
for (s16 x = bp1.X; x <= bp2.X; x++) {
map->emergeBlock(v3s16(x, y, z));
}
}
return 0;
}
// emerge_area(p1, p2, [callback, context])
// emerge mapblocks in area p1..p2, calls callback with context upon completion
int ModApiEnvMod::l_emerge_area(lua_State *L)
{
GET_ENV_PTR;
EmergeCompletionCallback callback = NULL;
ScriptCallbackState *state = NULL;
EmergeManager *emerge = getServer(L)->getEmergeManager();
v3s16 bpmin = getNodeBlockPos(read_v3s16(L, 1));
v3s16 bpmax = getNodeBlockPos(read_v3s16(L, 2));
sortBoxVerticies(bpmin, bpmax);
size_t num_blocks = VoxelArea(bpmin, bpmax).getVolume();
assert(num_blocks != 0);
if (lua_isfunction(L, 3)) {
callback = LuaEmergeAreaCallback;
lua_pushvalue(L, 3);
int callback_ref = luaL_ref(L, LUA_REGISTRYINDEX);
lua_pushvalue(L, 4);
int args_ref = luaL_ref(L, LUA_REGISTRYINDEX);
state = new ScriptCallbackState;
state->script = getServer(L)->getScriptIface();
state->callback_ref = callback_ref;
state->args_ref = args_ref;
state->refcount = num_blocks;
state->origin = getScriptApiBase(L)->getOrigin();
}
for (s16 z = bpmin.Z; z <= bpmax.Z; z++)
for (s16 y = bpmin.Y; y <= bpmax.Y; y++)
for (s16 x = bpmin.X; x <= bpmax.X; x++) {
emerge->enqueueBlockEmergeEx(v3s16(x, y, z), PEER_ID_INEXISTENT,
BLOCK_EMERGE_ALLOW_GEN | BLOCK_EMERGE_FORCE_QUEUE, callback, state);
}
return 0;
}
// delete_area(p1, p2)
// delete mapblocks in area p1..p2
int ModApiEnvMod::l_delete_area(lua_State *L)
{
GET_ENV_PTR;
v3s16 bpmin = getNodeBlockPos(read_v3s16(L, 1));
v3s16 bpmax = getNodeBlockPos(read_v3s16(L, 2));
sortBoxVerticies(bpmin, bpmax);
ServerMap &map = env->getServerMap();
MapEditEvent event;
event.type = MEET_OTHER;
bool success = true;
for (s16 z = bpmin.Z; z <= bpmax.Z; z++)
for (s16 y = bpmin.Y; y <= bpmax.Y; y++)
for (s16 x = bpmin.X; x <= bpmax.X; x++) {
v3s16 bp(x, y, z);
if (map.deleteBlock(bp)) {
env->setStaticForActiveObjectsInBlock(bp, false);
event.modified_blocks.insert(bp);
} else {
success = false;
}
}
map.dispatchEvent(event);
lua_pushboolean(L, success);
return 1;
}
// find_path(pos1, pos2, searchdistance,
// max_jump, max_drop, algorithm) -> table containing path
int ModApiEnvMod::l_find_path(lua_State *L)
{
GET_ENV_PTR;
v3s16 pos1 = read_v3s16(L, 1);
v3s16 pos2 = read_v3s16(L, 2);
unsigned int searchdistance = luaL_checkint(L, 3);
unsigned int max_jump = luaL_checkint(L, 4);
unsigned int max_drop = luaL_checkint(L, 5);
PathAlgorithm algo = PA_PLAIN_NP;
if (!lua_isnoneornil(L, 6)) {
std::string algorithm = luaL_checkstring(L,6);
if (algorithm == "A*")
algo = PA_PLAIN;
if (algorithm == "Dijkstra")
algo = PA_DIJKSTRA;
}
std::vector<v3s16> path = get_path(&env->getServerMap(), env->getGameDef()->ndef(), pos1, pos2,
searchdistance, max_jump, max_drop, algo);
if (!path.empty()) {
lua_createtable(L, path.size(), 0);
int top = lua_gettop(L);
unsigned int index = 1;
for (const v3s16 &i : path) {
lua_pushnumber(L,index);
push_v3s16(L, i);
lua_settable(L, top);
index++;
}
return 1;
}
return 0;
}
// spawn_tree(pos, treedef)
int ModApiEnvMod::l_spawn_tree(lua_State *L)
{
GET_ENV_PTR;
v3s16 p0 = read_v3s16(L, 1);
treegen::TreeDef tree_def;
std::string trunk,leaves,fruit;
const NodeDefManager *ndef = env->getGameDef()->ndef();
if(lua_istable(L, 2))
{
getstringfield(L, 2, "axiom", tree_def.initial_axiom);
getstringfield(L, 2, "rules_a", tree_def.rules_a);
getstringfield(L, 2, "rules_b", tree_def.rules_b);
getstringfield(L, 2, "rules_c", tree_def.rules_c);
getstringfield(L, 2, "rules_d", tree_def.rules_d);
getstringfield(L, 2, "trunk", trunk);
tree_def.trunknode=ndef->getId(trunk);
getstringfield(L, 2, "leaves", leaves);
tree_def.leavesnode=ndef->getId(leaves);
tree_def.leaves2_chance=0;
getstringfield(L, 2, "leaves2", leaves);
if (!leaves.empty()) {
tree_def.leaves2node=ndef->getId(leaves);
getintfield(L, 2, "leaves2_chance", tree_def.leaves2_chance);
}
getintfield(L, 2, "angle", tree_def.angle);
getintfield(L, 2, "iterations", tree_def.iterations);
if (!getintfield(L, 2, "random_level", tree_def.iterations_random_level))
tree_def.iterations_random_level = 0;
getstringfield(L, 2, "trunk_type", tree_def.trunk_type);
getboolfield(L, 2, "thin_branches", tree_def.thin_branches);
tree_def.fruit_chance=0;
getstringfield(L, 2, "fruit", fruit);
if (!fruit.empty()) {
tree_def.fruitnode=ndef->getId(fruit);
getintfield(L, 2, "fruit_chance",tree_def.fruit_chance);
}
tree_def.explicit_seed = getintfield(L, 2, "seed", tree_def.seed);
}
else
return 0;
ServerMap *map = &env->getServerMap();
treegen::error e;
if ((e = treegen::spawn_ltree (map, p0, ndef, tree_def)) != treegen::SUCCESS) {
if (e == treegen::UNBALANCED_BRACKETS) {
luaL_error(L, "spawn_tree(): closing ']' has no matching opening bracket");
} else {
luaL_error(L, "spawn_tree(): unknown error");
}
}
return 1;
}
// transforming_liquid_add(pos)
int ModApiEnvMod::l_transforming_liquid_add(lua_State *L)
{
GET_ENV_PTR;
v3s16 p0 = read_v3s16(L, 1);
env->getMap().transforming_liquid_add(p0);
return 1;
}
// forceload_block(blockpos)
// blockpos = {x=num, y=num, z=num}
int ModApiEnvMod::l_forceload_block(lua_State *L)
{
GET_ENV_PTR;
v3s16 blockpos = read_v3s16(L, 1);
env->getForceloadedBlocks()->insert(blockpos);
return 0;
}
// forceload_free_block(blockpos)
// blockpos = {x=num, y=num, z=num}
int ModApiEnvMod::l_forceload_free_block(lua_State *L)
{
GET_ENV_PTR;
v3s16 blockpos = read_v3s16(L, 1);
env->getForceloadedBlocks()->erase(blockpos);
return 0;
}
// get_translated_string(lang_code, string)
int ModApiEnvMod::l_get_translated_string(lua_State * L)
{
GET_ENV_PTR;
std::string lang_code = luaL_checkstring(L, 1);
std::string string = luaL_checkstring(L, 2);
getServer(L)->loadTranslationLanguage(lang_code);
string = wide_to_utf8(translate_string(utf8_to_wide(string),
&(*g_server_translations)[lang_code]));
lua_pushstring(L, string.c_str());
return 1;
}
void ModApiEnvMod::Initialize(lua_State *L, int top)
{
API_FCT(set_node);
API_FCT(bulk_set_node);
API_FCT(add_node);
API_FCT(swap_node);
API_FCT(add_item);
API_FCT(remove_node);
API_FCT(get_node);
API_FCT(get_node_or_nil);
API_FCT(get_node_light);
API_FCT(place_node);
API_FCT(dig_node);
API_FCT(punch_node);
API_FCT(get_node_max_level);
API_FCT(get_node_level);
API_FCT(set_node_level);
API_FCT(add_node_level);
API_FCT(add_entity);
API_FCT(find_nodes_with_meta);
API_FCT(get_meta);
API_FCT(get_node_timer);
API_FCT(get_connected_players);
API_FCT(get_player_by_name);
API_FCT(get_objects_inside_radius);
API_FCT(set_timeofday);
API_FCT(get_timeofday);
API_FCT(get_gametime);
API_FCT(get_day_count);
API_FCT(find_node_near);
API_FCT(find_nodes_in_area);
API_FCT(find_nodes_in_area_under_air);
API_FCT(fix_light);
API_FCT(load_area);
API_FCT(emerge_area);
API_FCT(delete_area);
API_FCT(get_perlin);
API_FCT(get_perlin_map);
API_FCT(get_voxel_manip);
API_FCT(clear_objects);
API_FCT(spawn_tree);
API_FCT(find_path);
API_FCT(line_of_sight);
API_FCT(raycast);
API_FCT(transforming_liquid_add);
API_FCT(forceload_block);
API_FCT(forceload_free_block);
API_FCT(get_translated_string);
}
void ModApiEnvMod::InitializeClient(lua_State *L, int top)
{
API_FCT(get_node_light);
API_FCT(get_timeofday);
API_FCT(get_node_max_level);
API_FCT(get_node_level);
API_FCT(find_nodes_with_meta);
API_FCT(find_node_near);
API_FCT(find_nodes_in_area);
API_FCT(find_nodes_in_area_under_air);
API_FCT(line_of_sight);
API_FCT(raycast);
}