minetest/src/scriptapi.cpp

1154 lines
31 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 "scriptapi.h"
#include <iostream>
#include <list>
extern "C" {
#include <lua.h>
#include <lualib.h>
#include <lauxlib.h>
}
#include "settings.h" // For accessing g_settings
#include "main.h" // For g_settings
#include "biome.h"
#include "emerge.h"
#include "script.h"
#include "rollback.h"
#include "scriptapi_types.h"
#include "scriptapi_env.h"
#include "scriptapi_nodetimer.h"
#include "scriptapi_inventory.h"
#include "scriptapi_nodemeta.h"
#include "scriptapi_object.h"
#include "scriptapi_noise.h"
#include "scriptapi_common.h"
#include "scriptapi_item.h"
#include "scriptapi_content.h"
#include "scriptapi_craft.h"
#include "scriptapi_particles.h"
/*****************************************************************************/
/* Mod related */
/*****************************************************************************/
class ModNameStorer
{
private:
lua_State *L;
public:
ModNameStorer(lua_State *L_, const std::string modname):
L(L_)
{
// Store current modname in registry
lua_pushstring(L, modname.c_str());
lua_setfield(L, LUA_REGISTRYINDEX, "minetest_current_modname");
}
~ModNameStorer()
{
// Clear current modname in registry
lua_pushnil(L);
lua_setfield(L, LUA_REGISTRYINDEX, "minetest_current_modname");
}
};
bool scriptapi_loadmod(lua_State *L, const std::string &scriptpath,
const std::string &modname)
{
ModNameStorer modnamestorer(L, modname);
if(!string_allowed(modname, "abcdefghijklmnopqrstuvwxyz"
"0123456789_")){
errorstream<<"Error loading mod \""<<modname
<<"\": modname does not follow naming conventions: "
<<"Only chararacters [a-z0-9_] are allowed."<<std::endl;
return false;
}
bool success = false;
try{
success = script_load(L, scriptpath.c_str());
}
catch(LuaError &e){
errorstream<<"Error loading mod \""<<modname
<<"\": "<<e.what()<<std::endl;
}
return success;
}
/*****************************************************************************/
/* Auth */
/*****************************************************************************/
/*
Privileges
*/
static void read_privileges(lua_State *L, int index,
std::set<std::string> &result)
{
result.clear();
lua_pushnil(L);
if(index < 0)
index -= 1;
while(lua_next(L, index) != 0){
// key at index -2 and value at index -1
std::string key = luaL_checkstring(L, -2);
bool value = lua_toboolean(L, -1);
if(value)
result.insert(key);
// removes value, keeps key for next iteration
lua_pop(L, 1);
}
}
static void get_auth_handler(lua_State *L)
{
lua_getglobal(L, "minetest");
lua_getfield(L, -1, "registered_auth_handler");
if(lua_isnil(L, -1)){
lua_pop(L, 1);
lua_getfield(L, -1, "builtin_auth_handler");
}
if(lua_type(L, -1) != LUA_TTABLE)
throw LuaError(L, "Authentication handler table not valid");
}
bool scriptapi_get_auth(lua_State *L, const std::string &playername,
std::string *dst_password, std::set<std::string> *dst_privs)
{
realitycheck(L);
assert(lua_checkstack(L, 20));
StackUnroller stack_unroller(L);
get_auth_handler(L);
lua_getfield(L, -1, "get_auth");
if(lua_type(L, -1) != LUA_TFUNCTION)
throw LuaError(L, "Authentication handler missing get_auth");
lua_pushstring(L, playername.c_str());
if(lua_pcall(L, 1, 1, 0))
script_error(L, "error: %s", lua_tostring(L, -1));
// nil = login not allowed
if(lua_isnil(L, -1))
return false;
luaL_checktype(L, -1, LUA_TTABLE);
std::string password;
bool found = getstringfield(L, -1, "password", password);
if(!found)
throw LuaError(L, "Authentication handler didn't return password");
if(dst_password)
*dst_password = password;
lua_getfield(L, -1, "privileges");
if(!lua_istable(L, -1))
throw LuaError(L,
"Authentication handler didn't return privilege table");
if(dst_privs)
read_privileges(L, -1, *dst_privs);
lua_pop(L, 1);
return true;
}
void scriptapi_create_auth(lua_State *L, const std::string &playername,
const std::string &password)
{
realitycheck(L);
assert(lua_checkstack(L, 20));
StackUnroller stack_unroller(L);
get_auth_handler(L);
lua_getfield(L, -1, "create_auth");
if(lua_type(L, -1) != LUA_TFUNCTION)
throw LuaError(L, "Authentication handler missing create_auth");
lua_pushstring(L, playername.c_str());
lua_pushstring(L, password.c_str());
if(lua_pcall(L, 2, 0, 0))
script_error(L, "error: %s", lua_tostring(L, -1));
}
bool scriptapi_set_password(lua_State *L, const std::string &playername,
const std::string &password)
{
realitycheck(L);
assert(lua_checkstack(L, 20));
StackUnroller stack_unroller(L);
get_auth_handler(L);
lua_getfield(L, -1, "set_password");
if(lua_type(L, -1) != LUA_TFUNCTION)
throw LuaError(L, "Authentication handler missing set_password");
lua_pushstring(L, playername.c_str());
lua_pushstring(L, password.c_str());
if(lua_pcall(L, 2, 1, 0))
script_error(L, "error: %s", lua_tostring(L, -1));
return lua_toboolean(L, -1);
}
/*****************************************************************************/
/* Misc */
/*****************************************************************************/
/*
Groups
*/
void read_groups(lua_State *L, int index,
std::map<std::string, int> &result)
{
if (!lua_istable(L,index))
return;
result.clear();
lua_pushnil(L);
if(index < 0)
index -= 1;
while(lua_next(L, index) != 0){
// key at index -2 and value at index -1
std::string name = luaL_checkstring(L, -2);
int rating = luaL_checkinteger(L, -1);
result[name] = rating;
// removes value, keeps key for next iteration
lua_pop(L, 1);
}
}
struct EnumString 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 es_OreType[] =
{
{ORE_SCATTER, "scatter"},
{ORE_SHEET, "sheet"},
{ORE_CLAYLIKE, "claylike"},
{0, NULL},
};
/*****************************************************************************/
/* Parameters */
/*****************************************************************************/
/*
DigParams
*/
static void set_dig_params(lua_State *L, int table,
const DigParams &params)
{
setboolfield(L, table, "diggable", params.diggable);
setfloatfield(L, table, "time", params.time);
setintfield(L, table, "wear", params.wear);
}
static void push_dig_params(lua_State *L,
const DigParams &params)
{
lua_newtable(L);
set_dig_params(L, -1, params);
}
/*
HitParams
*/
static void set_hit_params(lua_State *L, int table,
const HitParams &params)
{
setintfield(L, table, "hp", params.hp);
setintfield(L, table, "wear", params.wear);
}
static void push_hit_params(lua_State *L,
const HitParams &params)
{
lua_newtable(L);
set_hit_params(L, -1, params);
}
/*
ServerSoundParams
*/
static void read_server_sound_params(lua_State *L, int index,
ServerSoundParams &params)
{
if(index < 0)
index = lua_gettop(L) + 1 + index;
// Clear
params = ServerSoundParams();
if(lua_istable(L, index)){
getfloatfield(L, index, "gain", params.gain);
getstringfield(L, index, "to_player", params.to_player);
lua_getfield(L, index, "pos");
if(!lua_isnil(L, -1)){
v3f p = read_v3f(L, -1)*BS;
params.pos = p;
params.type = ServerSoundParams::SSP_POSITIONAL;
}
lua_pop(L, 1);
lua_getfield(L, index, "object");
if(!lua_isnil(L, -1)){
ObjectRef *ref = ObjectRef::checkobject(L, -1);
ServerActiveObject *sao = ObjectRef::getobject(ref);
if(sao){
params.object = sao->getId();
params.type = ServerSoundParams::SSP_OBJECT;
}
}
lua_pop(L, 1);
params.max_hear_distance = BS*getfloatfield_default(L, index,
"max_hear_distance", params.max_hear_distance/BS);
getboolfield(L, index, "loop", params.loop);
}
}
/*****************************************************************************/
/* callbacks */
/*****************************************************************************/
// Push the list of callbacks (a lua table).
// Then push nargs arguments.
// Then call this function, which
// - runs the callbacks
// - removes the table and arguments from the lua stack
// - pushes the return value, computed depending on mode
void scriptapi_run_callbacks(lua_State *L, int nargs,
RunCallbacksMode mode)
{
// Insert the return value into the lua stack, below the table
assert(lua_gettop(L) >= nargs + 1);
lua_pushnil(L);
lua_insert(L, -(nargs + 1) - 1);
// Stack now looks like this:
// ... <return value = nil> <table> <arg#1> <arg#2> ... <arg#n>
int rv = lua_gettop(L) - nargs - 1;
int table = rv + 1;
int arg = table + 1;
luaL_checktype(L, table, LUA_TTABLE);
// Foreach
lua_pushnil(L);
bool first_loop = true;
while(lua_next(L, table) != 0){
// key at index -2 and value at index -1
luaL_checktype(L, -1, LUA_TFUNCTION);
// Call function
for(int i = 0; i < nargs; i++)
lua_pushvalue(L, arg+i);
if(lua_pcall(L, nargs, 1, 0))
script_error(L, "error: %s", lua_tostring(L, -1));
// Move return value to designated space in stack
// Or pop it
if(first_loop){
// Result of first callback is always moved
lua_replace(L, rv);
first_loop = false;
} else {
// Otherwise, what happens depends on the mode
if(mode == RUN_CALLBACKS_MODE_FIRST)
lua_pop(L, 1);
else if(mode == RUN_CALLBACKS_MODE_LAST)
lua_replace(L, rv);
else if(mode == RUN_CALLBACKS_MODE_AND ||
mode == RUN_CALLBACKS_MODE_AND_SC){
if((bool)lua_toboolean(L, rv) == true &&
(bool)lua_toboolean(L, -1) == false)
lua_replace(L, rv);
else
lua_pop(L, 1);
}
else if(mode == RUN_CALLBACKS_MODE_OR ||
mode == RUN_CALLBACKS_MODE_OR_SC){
if((bool)lua_toboolean(L, rv) == false &&
(bool)lua_toboolean(L, -1) == true)
lua_replace(L, rv);
else
lua_pop(L, 1);
}
else
assert(0);
}
// Handle short circuit modes
if(mode == RUN_CALLBACKS_MODE_AND_SC &&
(bool)lua_toboolean(L, rv) == false)
break;
else if(mode == RUN_CALLBACKS_MODE_OR_SC &&
(bool)lua_toboolean(L, rv) == true)
break;
// value removed, keep key for next iteration
}
// Remove stuff from stack, leaving only the return value
lua_settop(L, rv);
// Fix return value in case no callbacks were called
if(first_loop){
if(mode == RUN_CALLBACKS_MODE_AND ||
mode == RUN_CALLBACKS_MODE_AND_SC){
lua_pop(L, 1);
lua_pushboolean(L, true);
}
else if(mode == RUN_CALLBACKS_MODE_OR ||
mode == RUN_CALLBACKS_MODE_OR_SC){
lua_pop(L, 1);
lua_pushboolean(L, false);
}
}
}
bool scriptapi_on_chat_message(lua_State *L, const std::string &name,
const std::string &message)
{
realitycheck(L);
assert(lua_checkstack(L, 20));
StackUnroller stack_unroller(L);
// Get minetest.registered_on_chat_messages
lua_getglobal(L, "minetest");
lua_getfield(L, -1, "registered_on_chat_messages");
// Call callbacks
lua_pushstring(L, name.c_str());
lua_pushstring(L, message.c_str());
scriptapi_run_callbacks(L, 2, RUN_CALLBACKS_MODE_OR_SC);
bool ate = lua_toboolean(L, -1);
return ate;
}
void scriptapi_on_shutdown(lua_State *L)
{
realitycheck(L);
assert(lua_checkstack(L, 20));
StackUnroller stack_unroller(L);
// Get registered shutdown hooks
lua_getglobal(L, "minetest");
lua_getfield(L, -1, "registered_on_shutdown");
// Call callbacks
scriptapi_run_callbacks(L, 0, RUN_CALLBACKS_MODE_FIRST);
}
void scriptapi_on_newplayer(lua_State *L, ServerActiveObject *player)
{
realitycheck(L);
assert(lua_checkstack(L, 20));
StackUnroller stack_unroller(L);
// Get minetest.registered_on_newplayers
lua_getglobal(L, "minetest");
lua_getfield(L, -1, "registered_on_newplayers");
// Call callbacks
objectref_get_or_create(L, player);
scriptapi_run_callbacks(L, 1, RUN_CALLBACKS_MODE_FIRST);
}
void scriptapi_on_dieplayer(lua_State *L, ServerActiveObject *player)
{
realitycheck(L);
assert(lua_checkstack(L, 20));
StackUnroller stack_unroller(L);
// Get minetest.registered_on_dieplayers
lua_getglobal(L, "minetest");
lua_getfield(L, -1, "registered_on_dieplayers");
// Call callbacks
objectref_get_or_create(L, player);
scriptapi_run_callbacks(L, 1, RUN_CALLBACKS_MODE_FIRST);
}
bool scriptapi_on_respawnplayer(lua_State *L, ServerActiveObject *player)
{
realitycheck(L);
assert(lua_checkstack(L, 20));
StackUnroller stack_unroller(L);
// Get minetest.registered_on_respawnplayers
lua_getglobal(L, "minetest");
lua_getfield(L, -1, "registered_on_respawnplayers");
// Call callbacks
objectref_get_or_create(L, player);
scriptapi_run_callbacks(L, 1, RUN_CALLBACKS_MODE_OR);
bool positioning_handled_by_some = lua_toboolean(L, -1);
return positioning_handled_by_some;
}
void scriptapi_on_joinplayer(lua_State *L, ServerActiveObject *player)
{
realitycheck(L);
assert(lua_checkstack(L, 20));
StackUnroller stack_unroller(L);
// Get minetest.registered_on_joinplayers
lua_getglobal(L, "minetest");
lua_getfield(L, -1, "registered_on_joinplayers");
// Call callbacks
objectref_get_or_create(L, player);
scriptapi_run_callbacks(L, 1, RUN_CALLBACKS_MODE_FIRST);
}
void scriptapi_on_leaveplayer(lua_State *L, ServerActiveObject *player)
{
realitycheck(L);
assert(lua_checkstack(L, 20));
StackUnroller stack_unroller(L);
// Get minetest.registered_on_leaveplayers
lua_getglobal(L, "minetest");
lua_getfield(L, -1, "registered_on_leaveplayers");
// Call callbacks
objectref_get_or_create(L, player);
scriptapi_run_callbacks(L, 1, RUN_CALLBACKS_MODE_FIRST);
}
/*
player
*/
void scriptapi_on_player_receive_fields(lua_State *L,
ServerActiveObject *player,
const std::string &formname,
const std::map<std::string, std::string> &fields)
{
realitycheck(L);
assert(lua_checkstack(L, 20));
StackUnroller stack_unroller(L);
// Get minetest.registered_on_chat_messages
lua_getglobal(L, "minetest");
lua_getfield(L, -1, "registered_on_player_receive_fields");
// Call callbacks
// param 1
objectref_get_or_create(L, player);
// param 2
lua_pushstring(L, formname.c_str());
// param 3
lua_newtable(L);
for(std::map<std::string, std::string>::const_iterator
i = fields.begin(); i != fields.end(); i++){
const std::string &name = i->first;
const std::string &value = i->second;
lua_pushstring(L, name.c_str());
lua_pushlstring(L, value.c_str(), value.size());
lua_settable(L, -3);
}
scriptapi_run_callbacks(L, 3, RUN_CALLBACKS_MODE_OR_SC);
}
/*****************************************************************************/
/* Api functions */
/*****************************************************************************/
// debug(text)
// Writes a line to dstream
static int l_debug(lua_State *L)
{
std::string text = lua_tostring(L, 1);
dstream << text << std::endl;
return 0;
}
// log([level,] text)
// Writes a line to the logger.
// The one-argument version logs to infostream.
// The two-argument version accept a log level: error, action, info, or verbose.
static int l_log(lua_State *L)
{
std::string text;
LogMessageLevel level = LMT_INFO;
if(lua_isnone(L, 2))
{
text = lua_tostring(L, 1);
}
else
{
std::string levelname = luaL_checkstring(L, 1);
text = luaL_checkstring(L, 2);
if(levelname == "error")
level = LMT_ERROR;
else if(levelname == "action")
level = LMT_ACTION;
else if(levelname == "verbose")
level = LMT_VERBOSE;
}
log_printline(level, text);
return 0;
}
// request_shutdown()
static int l_request_shutdown(lua_State *L)
{
get_server(L)->requestShutdown();
return 0;
}
// get_server_status()
static int l_get_server_status(lua_State *L)
{
lua_pushstring(L, wide_to_narrow(get_server(L)->getStatusString()).c_str());
return 1;
}
// register_biome({lots of stuff})
static int l_register_biome(lua_State *L)
{
int index = 1;
luaL_checktype(L, index, LUA_TTABLE);
BiomeDefManager *bmgr = get_server(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", "");
b->top_nodename = getstringfield_default(L, index, "top_node", "");
b->top_depth = getintfield_default(L, index, "top_depth", 0);
b->filler_nodename = getstringfield_default(L, index, "filler_node", "");
b->filler_height = getintfield_default(L, index, "filler_height", 0);
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;
bmgr->addBiome(b);
verbosestream << "register_biome: " << b->name << std::endl;
return 0;
}
static int l_register_ore(lua_State *L)
{
int index = 1;
luaL_checktype(L, index, LUA_TTABLE);
EmergeManager *emerge = get_server(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->wherein_name = getstringfield_default(L, index, "wherein", "");
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, "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;
}
// setting_set(name, value)
static int l_setting_set(lua_State *L)
{
const char *name = luaL_checkstring(L, 1);
const char *value = luaL_checkstring(L, 2);
g_settings->set(name, value);
return 0;
}
// setting_get(name)
static int l_setting_get(lua_State *L)
{
const char *name = luaL_checkstring(L, 1);
try{
std::string value = g_settings->get(name);
lua_pushstring(L, value.c_str());
} catch(SettingNotFoundException &e){
lua_pushnil(L);
}
return 1;
}
// setting_getbool(name)
static int l_setting_getbool(lua_State *L)
{
const char *name = luaL_checkstring(L, 1);
try{
bool value = g_settings->getBool(name);
lua_pushboolean(L, value);
} catch(SettingNotFoundException &e){
lua_pushnil(L);
}
return 1;
}
// setting_save()
static int l_setting_save(lua_State *L)
{
get_server(L)->saveConfig();
return 0;
}
// chat_send_all(text)
static int l_chat_send_all(lua_State *L)
{
const char *text = luaL_checkstring(L, 1);
// Get server from registry
Server *server = get_server(L);
// Send
server->notifyPlayers(narrow_to_wide(text));
return 0;
}
// chat_send_player(name, text)
static int l_chat_send_player(lua_State *L)
{
const char *name = luaL_checkstring(L, 1);
const char *text = luaL_checkstring(L, 2);
// Get server from registry
Server *server = get_server(L);
// Send
server->notifyPlayer(name, narrow_to_wide(text));
return 0;
}
// get_player_privs(name, text)
static int l_get_player_privs(lua_State *L)
{
const char *name = luaL_checkstring(L, 1);
// Get server from registry
Server *server = get_server(L);
// Do it
lua_newtable(L);
int table = lua_gettop(L);
std::set<std::string> privs_s = server->getPlayerEffectivePrivs(name);
for(std::set<std::string>::const_iterator
i = privs_s.begin(); i != privs_s.end(); i++){
lua_pushboolean(L, true);
lua_setfield(L, table, i->c_str());
}
lua_pushvalue(L, table);
return 1;
}
// get_ban_list()
static int l_get_ban_list(lua_State *L)
{
lua_pushstring(L, get_server(L)->getBanDescription("").c_str());
return 1;
}
// get_ban_description()
static int l_get_ban_description(lua_State *L)
{
const char * ip_or_name = luaL_checkstring(L, 1);
lua_pushstring(L, get_server(L)->getBanDescription(std::string(ip_or_name)).c_str());
return 1;
}
// ban_player()
static int l_ban_player(lua_State *L)
{
const char * name = luaL_checkstring(L, 1);
Player *player = get_env(L)->getPlayer(name);
if(player == NULL)
{
lua_pushboolean(L, false); // no such player
return 1;
}
try
{
Address addr = get_server(L)->getPeerAddress(get_env(L)->getPlayer(name)->peer_id);
std::string ip_str = addr.serializeString();
get_server(L)->setIpBanned(ip_str, name);
}
catch(con::PeerNotFoundException) // unlikely
{
dstream << __FUNCTION_NAME << ": peer was not found" << std::endl;
lua_pushboolean(L, false); // error
return 1;
}
lua_pushboolean(L, true);
return 1;
}
// unban_player_or_ip()
static int l_unban_player_of_ip(lua_State *L)
{
const char * ip_or_name = luaL_checkstring(L, 1);
get_server(L)->unsetIpBanned(ip_or_name);
lua_pushboolean(L, true);
return 1;
}
// show_formspec(playername,formname,formspec)
static int l_show_formspec(lua_State *L)
{
const char *playername = luaL_checkstring(L, 1);
const char *formname = luaL_checkstring(L, 2);
const char *formspec = luaL_checkstring(L, 3);
if(get_server(L)->showFormspec(playername,formspec,formname))
{
lua_pushboolean(L, true);
}else{
lua_pushboolean(L, false);
}
return 1;
}
// get_dig_params(groups, tool_capabilities[, time_from_last_punch])
static int l_get_dig_params(lua_State *L)
{
std::map<std::string, int> groups;
read_groups(L, 1, groups);
ToolCapabilities tp = read_tool_capabilities(L, 2);
if(lua_isnoneornil(L, 3))
push_dig_params(L, getDigParams(groups, &tp));
else
push_dig_params(L, getDigParams(groups, &tp,
luaL_checknumber(L, 3)));
return 1;
}
// get_hit_params(groups, tool_capabilities[, time_from_last_punch])
static int l_get_hit_params(lua_State *L)
{
std::map<std::string, int> groups;
read_groups(L, 1, groups);
ToolCapabilities tp = read_tool_capabilities(L, 2);
if(lua_isnoneornil(L, 3))
push_hit_params(L, getHitParams(groups, &tp));
else
push_hit_params(L, getHitParams(groups, &tp,
luaL_checknumber(L, 3)));
return 1;
}
// get_current_modname()
static int l_get_current_modname(lua_State *L)
{
lua_getfield(L, LUA_REGISTRYINDEX, "minetest_current_modname");
return 1;
}
// get_modpath(modname)
static int l_get_modpath(lua_State *L)
{
std::string modname = luaL_checkstring(L, 1);
// Do it
if(modname == "__builtin"){
std::string path = get_server(L)->getBuiltinLuaPath();
lua_pushstring(L, path.c_str());
return 1;
}
const ModSpec *mod = get_server(L)->getModSpec(modname);
if(!mod){
lua_pushnil(L);
return 1;
}
lua_pushstring(L, mod->path.c_str());
return 1;
}
// get_modnames()
// the returned list is sorted alphabetically for you
static int l_get_modnames(lua_State *L)
{
// Get a list of mods
std::list<std::string> mods_unsorted, mods_sorted;
get_server(L)->getModNames(mods_unsorted);
// Take unsorted items from mods_unsorted and sort them into
// mods_sorted; not great performance but the number of mods on a
// server will likely be small.
for(std::list<std::string>::iterator i = mods_unsorted.begin();
i != mods_unsorted.end(); ++i)
{
bool added = false;
for(std::list<std::string>::iterator x = mods_sorted.begin();
x != mods_sorted.end(); ++x)
{
// I doubt anybody using Minetest will be using
// anything not ASCII based :)
if((*i).compare(*x) <= 0)
{
mods_sorted.insert(x, *i);
added = true;
break;
}
}
if(!added)
mods_sorted.push_back(*i);
}
// Get the table insertion function from Lua.
lua_getglobal(L, "table");
lua_getfield(L, -1, "insert");
int insertion_func = lua_gettop(L);
// Package them up for Lua
lua_newtable(L);
int new_table = lua_gettop(L);
std::list<std::string>::iterator i = mods_sorted.begin();
while(i != mods_sorted.end())
{
lua_pushvalue(L, insertion_func);
lua_pushvalue(L, new_table);
lua_pushstring(L, (*i).c_str());
if(lua_pcall(L, 2, 0, 0) != 0)
{
script_error(L, "error: %s", lua_tostring(L, -1));
}
++i;
}
return 1;
}
// get_worldpath()
static int l_get_worldpath(lua_State *L)
{
std::string worldpath = get_server(L)->getWorldPath();
lua_pushstring(L, worldpath.c_str());
return 1;
}
// sound_play(spec, parameters)
static int l_sound_play(lua_State *L)
{
SimpleSoundSpec spec;
read_soundspec(L, 1, spec);
ServerSoundParams params;
read_server_sound_params(L, 2, params);
s32 handle = get_server(L)->playSound(spec, params);
lua_pushinteger(L, handle);
return 1;
}
// sound_stop(handle)
static int l_sound_stop(lua_State *L)
{
int handle = luaL_checkinteger(L, 1);
get_server(L)->stopSound(handle);
return 0;
}
// is_singleplayer()
static int l_is_singleplayer(lua_State *L)
{
lua_pushboolean(L, get_server(L)->isSingleplayer());
return 1;
}
// get_password_hash(name, raw_password)
static int l_get_password_hash(lua_State *L)
{
std::string name = luaL_checkstring(L, 1);
std::string raw_password = luaL_checkstring(L, 2);
std::string hash = translatePassword(name,
narrow_to_wide(raw_password));
lua_pushstring(L, hash.c_str());
return 1;
}
// notify_authentication_modified(name)
static int l_notify_authentication_modified(lua_State *L)
{
std::string name = "";
if(lua_isstring(L, 1))
name = lua_tostring(L, 1);
get_server(L)->reportPrivsModified(name);
return 0;
}
// rollback_get_last_node_actor(p, range, seconds) -> actor, p, seconds
static int l_rollback_get_last_node_actor(lua_State *L)
{
v3s16 p = read_v3s16(L, 1);
int range = luaL_checknumber(L, 2);
int seconds = luaL_checknumber(L, 3);
Server *server = get_server(L);
IRollbackManager *rollback = server->getRollbackManager();
v3s16 act_p;
int act_seconds = 0;
std::string actor = rollback->getLastNodeActor(p, range, seconds, &act_p, &act_seconds);
lua_pushstring(L, actor.c_str());
push_v3s16(L, act_p);
lua_pushnumber(L, act_seconds);
return 3;
}
// rollback_revert_actions_by(actor, seconds) -> bool, log messages
static int l_rollback_revert_actions_by(lua_State *L)
{
std::string actor = luaL_checkstring(L, 1);
int seconds = luaL_checknumber(L, 2);
Server *server = get_server(L);
IRollbackManager *rollback = server->getRollbackManager();
std::list<RollbackAction> actions = rollback->getRevertActions(actor, seconds);
std::list<std::string> log;
bool success = server->rollbackRevertActions(actions, &log);
// Push boolean result
lua_pushboolean(L, success);
// Get the table insert function and push the log table
lua_getglobal(L, "table");
lua_getfield(L, -1, "insert");
int table_insert = lua_gettop(L);
lua_newtable(L);
int table = lua_gettop(L);
for(std::list<std::string>::const_iterator i = log.begin();
i != log.end(); i++)
{
lua_pushvalue(L, table_insert);
lua_pushvalue(L, table);
lua_pushstring(L, i->c_str());
if(lua_pcall(L, 2, 0, 0))
script_error(L, "error: %s", lua_tostring(L, -1));
}
lua_remove(L, -2); // Remove table
lua_remove(L, -2); // Remove insert
return 2;
}
static const struct luaL_Reg minetest_f [] = {
{"debug", l_debug},
{"log", l_log},
{"request_shutdown", l_request_shutdown},
{"get_server_status", l_get_server_status},
{"register_item_raw", l_register_item_raw},
{"register_alias_raw", l_register_alias_raw},
{"register_craft", l_register_craft},
{"register_biome", l_register_biome},
{"register_ore", l_register_ore},
{"setting_set", l_setting_set},
{"setting_get", l_setting_get},
{"setting_getbool", l_setting_getbool},
{"setting_save",l_setting_save},
{"chat_send_all", l_chat_send_all},
{"chat_send_player", l_chat_send_player},
{"get_player_privs", l_get_player_privs},
{"get_ban_list", l_get_ban_list},
{"get_ban_description", l_get_ban_description},
{"ban_player", l_ban_player},
{"unban_player_or_ip", l_unban_player_of_ip},
{"get_inventory", l_get_inventory},
{"create_detached_inventory_raw", l_create_detached_inventory_raw},
{"show_formspec", l_show_formspec},
{"get_dig_params", l_get_dig_params},
{"get_hit_params", l_get_hit_params},
{"get_current_modname", l_get_current_modname},
{"get_modpath", l_get_modpath},
{"get_modnames", l_get_modnames},
{"get_worldpath", l_get_worldpath},
{"sound_play", l_sound_play},
{"sound_stop", l_sound_stop},
{"is_singleplayer", l_is_singleplayer},
{"get_password_hash", l_get_password_hash},
{"notify_authentication_modified", l_notify_authentication_modified},
{"get_craft_result", l_get_craft_result},
{"get_craft_recipe", l_get_craft_recipe},
{"get_all_craft_recipes", l_get_all_craft_recipes},
{"rollback_get_last_node_actor", l_rollback_get_last_node_actor},
{"rollback_revert_actions_by", l_rollback_revert_actions_by},
{"add_particle", l_add_particle},
{"add_particlespawner", l_add_particlespawner},
{"delete_particlespawner", l_delete_particlespawner},
{NULL, NULL}
};
/*
Main export function
*/
void scriptapi_export(lua_State *L, Server *server)
{
realitycheck(L);
assert(lua_checkstack(L, 20));
verbosestream<<"scriptapi_export()"<<std::endl;
StackUnroller stack_unroller(L);
// Store server as light userdata in registry
lua_pushlightuserdata(L, server);
lua_setfield(L, LUA_REGISTRYINDEX, "minetest_server");
// Register global functions in table minetest
lua_newtable(L);
luaL_register(L, NULL, minetest_f);
lua_setglobal(L, "minetest");
// Get the main minetest table
lua_getglobal(L, "minetest");
// Add tables to minetest
lua_newtable(L);
lua_setfield(L, -2, "object_refs");
lua_newtable(L);
lua_setfield(L, -2, "luaentities");
// Register wrappers
LuaItemStack::Register(L);
InvRef::Register(L);
NodeMetaRef::Register(L);
NodeTimerRef::Register(L);
ObjectRef::Register(L);
EnvRef::Register(L);
LuaPseudoRandom::Register(L);
LuaPerlinNoise::Register(L);
LuaPerlinNoiseMap::Register(L);
}