// rollback_revert_actions_by(actor, seconds) -> bool, log messages
int ModApiBasic::l_rollback_revert_actions_by(lua_State *L)
{
std::string actor = luaL_checkstring(L, 1);
int seconds = luaL_checknumber(L, 2);
Server *server = getServer(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;
}
// rollback_revert_actions_by(actor, seconds) -> bool, log messages
int ModApiRollback::l_rollback_revert_actions_by(lua_State *L)
{
std::string actor = luaL_checkstring(L, 1);
int seconds = luaL_checknumber(L, 2);
Server *server = getServer(L);
IRollbackManager *rollback = server->getRollbackManager();
// If rollback is disabled, tell it's not a success.
if (rollback == NULL) {
lua_pushboolean(L, false);
lua_newtable(L);
return 2;
}
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);
lua_createtable(L, log.size(), 0);
unsigned long i = 0;
for(std::list<std::string>::const_iterator iter = log.begin();
iter != log.end(); ++i, ++iter) {
lua_pushnumber(L, i);
lua_pushstring(L, iter->c_str());
lua_settable(L, -3);
}
return 2;
}
// rollback_get_last_node_actor(p, range, seconds) -> actor, p, seconds
int ModApiBasic::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 = getServer(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_get_node_actions(pos, range, seconds, limit) -> {{actor, pos, time, oldnode, newnode}, ...}
int ModApiRollback::l_rollback_get_node_actions(lua_State *L)
{
NO_MAP_LOCK_REQUIRED;
v3s16 pos = read_v3s16(L, 1);
int range = luaL_checknumber(L, 2);
time_t seconds = (time_t) luaL_checknumber(L, 3);
int limit = luaL_checknumber(L, 4);
Server *server = getServer(L);
IRollbackManager *rollback = server->getRollbackManager();
if (rollback == NULL) {
return 0;
}
std::list<RollbackAction> actions = rollback->getNodeActors(pos, range, seconds, limit);
std::list<RollbackAction>::iterator iter = actions.begin();
lua_createtable(L, actions.size(), 0);
for (unsigned int i = 1; iter != actions.end(); ++iter, ++i) {
lua_createtable(L, 0, 5); // Make a table with enough space pre-allocated
lua_pushstring(L, iter->actor.c_str());
lua_setfield(L, -2, "actor");
push_v3s16(L, iter->p);
lua_setfield(L, -2, "pos");
lua_pushnumber(L, iter->unix_time);
lua_setfield(L, -2, "time");
push_RollbackNode(L, iter->n_old);
lua_setfield(L, -2, "oldnode");
push_RollbackNode(L, iter->n_new);
lua_setfield(L, -2, "newnode");
lua_rawseti(L, -2, i); // Add action table to main table
}
return 1;
}
void IDropAction::apply(InventoryManager *mgr, ServerActiveObject *player, IGameDef *gamedef)
{
Inventory *inv_from = mgr->getInventory(from_inv);
if(!inv_from){
infostream<<"IDropAction::apply(): FAIL: source inventory not found: "
<<"from_inv=\""<<from_inv.dump()<<"\""<<std::endl;
return;
}
InventoryList *list_from = inv_from->getList(from_list);
/*
If a list doesn't exist or the source item doesn't exist
*/
if(!list_from){
infostream<<"IDropAction::apply(): FAIL: source list not found: "
<<"from_inv=\""<<from_inv.dump()<<"\""<<std::endl;
return;
}
if(list_from->getItem(from_i).empty())
{
infostream<<"IDropAction::apply(): FAIL: source item not found: "
<<"from_inv=\""<<from_inv.dump()<<"\""
<<", from_list=\""<<from_list<<"\""
<<" from_i="<<from_i<<std::endl;
return;
}
/*
Do not handle rollback if inventory is player's
*/
bool ignore_src_rollback = (from_inv.type == InventoryLocation::PLAYER);
/*
Collect information of endpoints
*/
int take_count = list_from->getItem(from_i).count;
if(count != 0 && count < take_count)
take_count = count;
int src_can_take_count = take_count;
// Source is detached
if(from_inv.type == InventoryLocation::DETACHED)
{
ItemStack src_item = list_from->getItem(from_i);
src_item.count = take_count;
src_can_take_count = PLAYER_TO_SA(player)->detached_inventory_AllowTake(
from_inv.name, from_list, from_i, src_item, player);
}
// Source is nodemeta
if(from_inv.type == InventoryLocation::NODEMETA)
{
ItemStack src_item = list_from->getItem(from_i);
src_item.count = take_count;
src_can_take_count = PLAYER_TO_SA(player)->nodemeta_inventory_AllowTake(
from_inv.p, from_list, from_i, src_item, player);
}
if(src_can_take_count != -1 && src_can_take_count < take_count)
take_count = src_can_take_count;
int actually_dropped_count = 0;
ItemStack src_item = list_from->getItem(from_i);
// Drop the item
ItemStack item1 = list_from->getItem(from_i);
item1.count = take_count;
if(PLAYER_TO_SA(player)->item_OnDrop(item1, player,
player->getBasePosition() + v3f(0,1,0)))
{
actually_dropped_count = take_count - item1.count;
if(actually_dropped_count == 0){
infostream<<"Actually dropped no items"<<std::endl;
return;
}
// If source isn't infinite
if(src_can_take_count != -1){
// Take item from source list
ItemStack item2 = list_from->takeItem(from_i, actually_dropped_count);
if(item2.count != actually_dropped_count)
errorstream<<"Could not take dropped count of items"<<std::endl;
mgr->setInventoryModified(from_inv, false);
}
}
infostream<<"IDropAction::apply(): dropped "
<<" from inv=\""<<from_inv.dump()<<"\""
<<" list=\""<<from_list<<"\""
<<" i="<<from_i
<<std::endl;
src_item.count = actually_dropped_count;
/*
Report drop to endpoints
*/
// Source is detached
if(from_inv.type == InventoryLocation::DETACHED)
{
PLAYER_TO_SA(player)->detached_inventory_OnTake(
from_inv.name, from_list, from_i, src_item, player);
}
// Source is nodemeta
if(from_inv.type == InventoryLocation::NODEMETA)
{
PLAYER_TO_SA(player)->nodemeta_inventory_OnTake(
from_inv.p, from_list, from_i, src_item, player);
}
/*
Record rollback information
*/
if(!ignore_src_rollback && gamedef->rollback())
{
IRollbackManager *rollback = gamedef->rollback();
// If source is not infinite, record item take
if(src_can_take_count != -1){
RollbackAction action;
std::string loc;
{
std::ostringstream os(std::ios::binary);
from_inv.serialize(os);
loc = os.str();
}
action.setModifyInventoryStack(loc, from_list, from_i,
false, src_item);
rollback->reportAction(action);
}
}
}
void IMoveAction::apply(InventoryManager *mgr, ServerActiveObject *player, IGameDef *gamedef)
{
Inventory *inv_from = mgr->getInventory(from_inv);
Inventory *inv_to = mgr->getInventory(to_inv);
if (!inv_from) {
infostream << "IMoveAction::apply(): FAIL: source inventory not found: "
<< "from_inv=\""<<from_inv.dump() << "\""
<< ", to_inv=\"" << to_inv.dump() << "\"" << std::endl;
return;
}
if (!inv_to) {
infostream << "IMoveAction::apply(): FAIL: destination inventory not found: "
<< "from_inv=\"" << from_inv.dump() << "\""
<< ", to_inv=\"" << to_inv.dump() << "\"" << std::endl;
return;
}
InventoryList *list_from = inv_from->getList(from_list);
InventoryList *list_to = inv_to->getList(to_list);
/*
If a list doesn't exist or the source item doesn't exist
*/
if (!list_from) {
infostream << "IMoveAction::apply(): FAIL: source list not found: "
<< "from_inv=\"" << from_inv.dump() << "\""
<< ", from_list=\"" << from_list << "\"" << std::endl;
return;
}
if (!list_to) {
infostream << "IMoveAction::apply(): FAIL: destination list not found: "
<< "to_inv=\""<<to_inv.dump() << "\""
<< ", to_list=\"" << to_list << "\"" << std::endl;
return;
}
if (move_somewhere) {
s16 old_to_i = to_i;
u16 old_count = count;
caused_by_move_somewhere = true;
move_somewhere = false;
infostream << "IMoveAction::apply(): moving item somewhere"
<< " msom=" << move_somewhere
<< " count=" << count
<< " from inv=\"" << from_inv.dump() << "\""
<< " list=\"" << from_list << "\""
<< " i=" << from_i
<< " to inv=\"" << to_inv.dump() << "\""
<< " list=\"" << to_list << "\""
<< std::endl;
// Try to add the item to destination list
s16 dest_size = list_to->getSize();
// First try all the non-empty slots
for (s16 dest_i = 0; dest_i < dest_size && count > 0; dest_i++) {
if (!list_to->getItem(dest_i).empty()) {
to_i = dest_i;
apply(mgr, player, gamedef);
count -= move_count;
}
}
// Then try all the empty ones
for (s16 dest_i = 0; dest_i < dest_size && count > 0; dest_i++) {
if (list_to->getItem(dest_i).empty()) {
to_i = dest_i;
apply(mgr, player, gamedef);
count -= move_count;
}
}
to_i = old_to_i;
count = old_count;
caused_by_move_somewhere = false;
move_somewhere = true;
return;
}
if ((u16)to_i > list_to->getSize()) {
infostream << "IMoveAction::apply(): FAIL: destination index out of bounds: "
<< "to_i=" << to_i
<< ", size=" << list_to->getSize() << std::endl;
return;
}
/*
Do not handle rollback if both inventories are that of the same player
*/
bool ignore_rollback = (
from_inv.type == InventoryLocation::PLAYER &&
to_inv.type == InventoryLocation::PLAYER &&
from_inv.name == to_inv.name);
/*
Collect information of endpoints
*/
int try_take_count = count;
if(try_take_count == 0)
try_take_count = list_from->getItem(from_i).count;
int src_can_take_count = 0xffff;
int dst_can_put_count = 0xffff;
/* Query detached inventories */
// Move occurs in the same detached inventory
if(from_inv.type == InventoryLocation::DETACHED &&
to_inv.type == InventoryLocation::DETACHED &&
from_inv.name == to_inv.name)
{
src_can_take_count = PLAYER_TO_SA(player)->detached_inventory_AllowMove(
from_inv.name, from_list, from_i,
to_list, to_i, try_take_count, player);
dst_can_put_count = src_can_take_count;
}
else
{
// Destination is detached
if(to_inv.type == InventoryLocation::DETACHED)
{
ItemStack src_item = list_from->getItem(from_i);
src_item.count = try_take_count;
dst_can_put_count = PLAYER_TO_SA(player)->detached_inventory_AllowPut(
to_inv.name, to_list, to_i, src_item, player);
}
// Source is detached
if(from_inv.type == InventoryLocation::DETACHED)
{
ItemStack src_item = list_from->getItem(from_i);
src_item.count = try_take_count;
src_can_take_count = PLAYER_TO_SA(player)->detached_inventory_AllowTake(
from_inv.name, from_list, from_i, src_item, player);
}
}
/* Query node metadata inventories */
// Both endpoints are nodemeta
// Move occurs in the same nodemeta inventory
if(from_inv.type == InventoryLocation::NODEMETA &&
to_inv.type == InventoryLocation::NODEMETA &&
from_inv.p == to_inv.p)
{
src_can_take_count = PLAYER_TO_SA(player)->nodemeta_inventory_AllowMove(
from_inv.p, from_list, from_i,
to_list, to_i, try_take_count, player);
dst_can_put_count = src_can_take_count;
}
else
{
// Destination is nodemeta
if(to_inv.type == InventoryLocation::NODEMETA)
{
ItemStack src_item = list_from->getItem(from_i);
src_item.count = try_take_count;
dst_can_put_count = PLAYER_TO_SA(player)->nodemeta_inventory_AllowPut(
to_inv.p, to_list, to_i, src_item, player);
}
// Source is nodemeta
if(from_inv.type == InventoryLocation::NODEMETA)
{
ItemStack src_item = list_from->getItem(from_i);
src_item.count = try_take_count;
src_can_take_count = PLAYER_TO_SA(player)->nodemeta_inventory_AllowTake(
from_inv.p, from_list, from_i, src_item, player);
}
}
int old_count = count;
/* Modify count according to collected data */
count = try_take_count;
if(src_can_take_count != -1 && count > src_can_take_count)
count = src_can_take_count;
if(dst_can_put_count != -1 && count > dst_can_put_count)
count = dst_can_put_count;
/* Limit according to source item count */
if(count > list_from->getItem(from_i).count)
count = list_from->getItem(from_i).count;
/* If no items will be moved, don't go further */
if(count == 0)
{
infostream<<"IMoveAction::apply(): move was completely disallowed:"
<<" count="<<old_count
<<" from inv=\""<<from_inv.dump()<<"\""
<<" list=\""<<from_list<<"\""
<<" i="<<from_i
<<" to inv=\""<<to_inv.dump()<<"\""
<<" list=\""<<to_list<<"\""
<<" i="<<to_i
<<std::endl;
return;
}
ItemStack src_item = list_from->getItem(from_i);
src_item.count = count;
ItemStack from_stack_was = list_from->getItem(from_i);
ItemStack to_stack_was = list_to->getItem(to_i);
/*
Perform actual move
If something is wrong (source item is empty, destination is the
same as source), nothing happens
*/
move_count = list_from->moveItem(from_i,
list_to, to_i, count, !caused_by_move_somewhere);
// If source is infinite, reset it's stack
if(src_can_take_count == -1){
// If destination stack is of different type and there are leftover
// items, attempt to put the leftover items to a different place in the
// destination inventory.
// The client-side GUI will try to guess if this happens.
if(from_stack_was.name != to_stack_was.name){
for(u32 i=0; i<list_to->getSize(); i++){
if(list_to->getItem(i).empty()){
list_to->changeItem(i, to_stack_was);
break;
}
}
}
list_from->deleteItem(from_i);
list_from->addItem(from_i, from_stack_was);
}
// If destination is infinite, reset it's stack and take count from source
if(dst_can_put_count == -1){
list_to->deleteItem(to_i);
list_to->addItem(to_i, to_stack_was);
list_from->deleteItem(from_i);
list_from->addItem(from_i, from_stack_was);
list_from->takeItem(from_i, count);
}
infostream << "IMoveAction::apply(): moved"
<< " msom=" << move_somewhere
<< " caused=" << caused_by_move_somewhere
<< " count=" << count
<< " from inv=\"" << from_inv.dump() << "\""
<< " list=\"" << from_list << "\""
<< " i=" << from_i
<< " to inv=\"" << to_inv.dump() << "\""
<< " list=\"" << to_list << "\""
<< " i=" << to_i
<< std::endl;
/*
Record rollback information
*/
if(!ignore_rollback && gamedef->rollback())
{
IRollbackManager *rollback = gamedef->rollback();
// If source is not infinite, record item take
if(src_can_take_count != -1){
RollbackAction action;
std::string loc;
{
std::ostringstream os(std::ios::binary);
from_inv.serialize(os);
loc = os.str();
}
action.setModifyInventoryStack(loc, from_list, from_i, false,
src_item);
rollback->reportAction(action);
}
// If destination is not infinite, record item put
if(dst_can_put_count != -1){
RollbackAction action;
std::string loc;
{
std::ostringstream os(std::ios::binary);
to_inv.serialize(os);
loc = os.str();
}
action.setModifyInventoryStack(loc, to_list, to_i, true,
src_item);
rollback->reportAction(action);
}
}
/*
Report move to endpoints
*/
/* Detached inventories */
// Both endpoints are same detached
if(from_inv.type == InventoryLocation::DETACHED &&
to_inv.type == InventoryLocation::DETACHED &&
from_inv.name == to_inv.name)
{
PLAYER_TO_SA(player)->detached_inventory_OnMove(
from_inv.name, from_list, from_i,
to_list, to_i, count, player);
}
else
{
// Destination is detached
if(to_inv.type == InventoryLocation::DETACHED)
{
PLAYER_TO_SA(player)->detached_inventory_OnPut(
to_inv.name, to_list, to_i, src_item, player);
}
// Source is detached
if(from_inv.type == InventoryLocation::DETACHED)
{
PLAYER_TO_SA(player)->detached_inventory_OnTake(
from_inv.name, from_list, from_i, src_item, player);
}
}
/* Node metadata inventories */
// Both endpoints are same nodemeta
if(from_inv.type == InventoryLocation::NODEMETA &&
to_inv.type == InventoryLocation::NODEMETA &&
from_inv.p == to_inv.p)
{
PLAYER_TO_SA(player)->nodemeta_inventory_OnMove(
from_inv.p, from_list, from_i,
to_list, to_i, count, player);
}
else{
// Destination is nodemeta
if(to_inv.type == InventoryLocation::NODEMETA)
{
PLAYER_TO_SA(player)->nodemeta_inventory_OnPut(
to_inv.p, to_list, to_i, src_item, player);
}
// Source is nodemeta
else if(from_inv.type == InventoryLocation::NODEMETA)
{
PLAYER_TO_SA(player)->nodemeta_inventory_OnTake(
from_inv.p, from_list, from_i, src_item, player);
}
}
mgr->setInventoryModified(from_inv, false);
if(inv_from != inv_to)
mgr->setInventoryModified(to_inv, false);
}