EmergeAction EmergeThread::getBlockOrStartGen(
v3s16 pos, bool allow_gen, MapBlock **block, BlockMakeData *bmdata)
{
//MutexAutoLock envlock(m_server->m_env_mutex);
{
MAP_NOTHREAD_LOCK(m_map);
// 1). Attempt to fetch block from memory
*block = m_map->getBlockNoCreateNoEx(pos, false, true);
}
if (*block && !(*block)->isDummy() && (*block)->isGenerated())
return EMERGE_FROM_MEMORY;
{
MAP_NOTHREAD_LOCK(m_map);
// 2). Attempt to load block from disk
*block = m_map->loadBlock(pos);
}
if (*block && (*block)->isGenerated())
{
MAP_NOTHREAD_LOCK(m_map);
m_map->prepareBlock(*block);
return EMERGE_FROM_DISK;
}
{
MAP_NOTHREAD_LOCK(m_map);
// 3). Attempt to start generation
if (allow_gen && m_map->initBlockMake(pos, bmdata))
return EMERGE_GENERATED;
}
/*
verbosestream << "EmergeThread::getBlockOrStartGen : cancel pos=" << pos << " block="<< *block;
if (*block)
verbosestream << "dummy=" << (*block)->isDummy() << " generated="<< (*block)->isGenerated();
verbosestream << std::endl;
*/
// All attempts failed; cancel this block emerge
return EMERGE_CANCELLED;
}
MapBlock *EmergeThread::finishGen(v3s16 pos, BlockMakeData *bmdata,
std::map<v3s16, MapBlock *> *modified_blocks)
{
//MutexAutoLock envlock(m_server->m_env_mutex);
ScopeProfiler sp(g_profiler,
"EmergeThread: after Mapgen::makeChunk", SPT_AVG);
/*
Perform post-processing on blocks (invalidate lighting, queue liquid
transforms, etc.) to finish block make
*/
m_map->finishBlockMake(bmdata, modified_blocks);
MapBlock *block = m_map->getBlockNoCreateNoEx(pos, false, true);
if (!block) {
errorstream << "EmergeThread::finishGen: Couldn't grab block we "
"just generated: " << PP(pos) << std::endl;
return NULL;
}
v3s16 minp = bmdata->blockpos_min * MAP_BLOCKSIZE;
v3s16 maxp = bmdata->blockpos_max * MAP_BLOCKSIZE +
v3s16(1,1,1) * (MAP_BLOCKSIZE - 1);
// Ignore map edit events, they will not need to be sent
// to anybody because the block hasn't been sent to anybody
/* thread unsafe
MapEditEventAreaIgnorer ign(
&m_server->m_ignore_map_edit_events_area,
VoxelArea(minp, maxp));
*/
/*
Run Lua on_generated callbacks
*/
try {
MAP_NOTHREAD_LOCK(m_map);
m_server->getScriptIface()->environment_OnGenerated(
minp, maxp, m_mapgen->blockseed);
} catch (LuaError &e) {
m_server->setAsyncFatalError("Lua: " + std::string(e.what()));
}
EMERGE_DBG_OUT("ended up with: " << analyze_block(block));
/*
Activate the block
*/
m_server->m_env->activateBlock(block, 0);
return block;
}
void Server::handleCommand_Interact(NetworkPacket* pkt) {
const auto peer_id = pkt->getPeerId();
auto & packet = *(pkt->packet);
auto player = m_env->getPlayer(pkt->getPeerId());
if (!player) {
m_con.DisconnectPeer(pkt->getPeerId());
return;
}
auto playersao = player->getPlayerSAO();
if (!playersao) {
m_con.DisconnectPeer(pkt->getPeerId());
return;
}
u8 action;
u16 item_i;
PointedThing pointed;
packet[TOSERVER_INTERACT_ACTION].convert(action);
packet[TOSERVER_INTERACT_ITEM].convert(item_i);
packet[TOSERVER_INTERACT_POINTED_THING].convert(pointed);
if(player->hp == 0) {
verbosestream << "TOSERVER_INTERACT: " << player->getName()
<< " tried to interact, but is dead!" << std::endl;
return;
}
MAP_NOTHREAD_LOCK((&m_env->getMap()));
v3f player_pos = playersao->getLastGoodPosition();
// Update wielded item
playersao->setWieldIndex(item_i);
// Get pointed to node (undefined if not POINTEDTYPE_NODE)
v3s16 p_under = pointed.node_undersurface;
v3s16 p_above = pointed.node_abovesurface;
// Get pointed to object (NULL if not POINTEDTYPE_OBJECT)
ServerActiveObject *pointed_object = NULL;
if(pointed.type == POINTEDTHING_OBJECT) {
pointed_object = m_env->getActiveObject(pointed.object_id);
if(pointed_object == NULL) {
verbosestream << "TOSERVER_INTERACT: "
"pointed object is NULL" << std::endl;
return;
}
}
v3f pointed_pos_under = player_pos;
v3f pointed_pos_above = player_pos;
if(pointed.type == POINTEDTHING_NODE) {
pointed_pos_under = intToFloat(p_under, BS);
pointed_pos_above = intToFloat(p_above, BS);
} else if(pointed.type == POINTEDTHING_OBJECT) {
pointed_pos_under = pointed_object->getBasePosition();
pointed_pos_above = pointed_pos_under;
}
/*
Check that target is reasonably close
(only when digging or placing things)
*/
static const bool enable_anticheat = !g_settings->getBool("disable_anticheat");
if ((action == 0 || action == 2 || action == 3) &&
(enable_anticheat && !isSingleplayer())) {
float d = player_pos.getDistanceFrom(pointed_pos_under);
float max_d = BS * 14; // Just some large enough value
if(d > max_d) {
actionstream << "Player " << player->getName()
<< " tried to access " << pointed.dump()
<< " from too far: "
<< "d=" << d << ", max_d=" << max_d
<< ". ignoring." << std::endl;
// Re-send block to revert change on client-side
RemoteClient *client = getClient(peer_id);
v3s16 blockpos = getNodeBlockPos(floatToInt(pointed_pos_under, BS));
client->SetBlockNotSent(blockpos);
// Call callbacks
m_script->on_cheat(playersao, "interacted_too_far");
// Do nothing else
return;
}
}
/*
Make sure the player is allowed to do it
*/
if(!checkPriv(player->getName(), "interact")) {
actionstream << player->getName() << " attempted to interact with "
<< pointed.dump() << " without 'interact' privilege"
<< std::endl;
// Re-send block to revert change on client-side
RemoteClient *client = getClient(peer_id);
// Digging completed -> under
if(action == 2) {
v3s16 blockpos = getNodeBlockPos(floatToInt(pointed_pos_under, BS));
client->SetBlockNotSent(blockpos);
}
// Placement -> above
if(action == 3) {
v3s16 blockpos = getNodeBlockPos(floatToInt(pointed_pos_above, BS));
client->SetBlockNotSent(blockpos);
}
stat.add("interact_denied", player->getName());
return;
}
/*
If something goes wrong, this player is to blame
*/
RollbackScopeActor rollback_scope(m_rollback,
std::string("player:") + player->getName());
/*
0: start digging or punch object
*/
if(action == 0) {
if(pointed.type == POINTEDTHING_NODE) {
/*
NOTE: This can be used in the future to check if
somebody is cheating, by checking the timing.
*/
MapNode n = m_env->getMap().getNode(p_under);
if (!n) {
infostream << "Server: Not punching: Node not found."
<< " Adding block to emerge queue."
<< std::endl;
m_emerge->enqueueBlockEmerge(peer_id, getNodeBlockPos(p_above), false);
}
if(n.getContent() != CONTENT_IGNORE)
m_script->node_on_punch(p_under, n, playersao, pointed);
// Cheat prevention
playersao->noCheatDigStart(p_under);
} else if(pointed.type == POINTEDTHING_OBJECT) {
// Skip if object has been removed
if(pointed_object->m_removed)
return;
actionstream << player->getName() << " punches object "
<< pointed.object_id << ": "
<< pointed_object->getDescription() << std::endl;
ItemStack punchitem = playersao->getWieldedItem();
ToolCapabilities toolcap =
punchitem.getToolCapabilities(m_itemdef);
v3f dir = (pointed_object->getBasePosition() -
(player->getPosition() + player->getEyeOffset())
).normalize();
float time_from_last_punch =
playersao->resetTimeFromLastPunch();
s16 src_original_hp = pointed_object->getHP();
s16 dst_origin_hp = playersao->getHP();
pointed_object->punch(dir, &toolcap, playersao,
time_from_last_punch);
// If the object is a player and its HP changed
if (src_original_hp != pointed_object->getHP() &&
pointed_object->getType() == ACTIVEOBJECT_TYPE_PLAYER) {
SendPlayerHPOrDie(((PlayerSAO*)pointed_object));
}
// If the puncher is a player and its HP changed
if (dst_origin_hp != playersao->getHP()) {
SendPlayerHPOrDie(playersao);
}
stat.add("punch", player->getName());
}
} // action == 0
/*
1: stop digging
*/
else if(action == 1) {
} // action == 1
/*
2: Digging completed
*/
else if(action == 2) {
// Only digging of nodes
if(pointed.type == POINTEDTHING_NODE) {
MapNode n = m_env->getMap().getNode(p_under);
if (!n) {
infostream << "Server: Not finishing digging: Node not found."
<< " Adding block to emerge queue."
<< std::endl;
m_emerge->enqueueBlockEmerge(peer_id, getNodeBlockPos(p_above), false);
}
/* Cheat prevention */
bool is_valid_dig = true;
if (enable_anticheat && !isSingleplayer()) {
v3s16 nocheat_p = playersao->getNoCheatDigPos();
float nocheat_t = playersao->getNoCheatDigTime();
playersao->noCheatDigEnd();
// If player didn't start digging this, ignore dig
if(nocheat_p != p_under) {
infostream << "Server: NoCheat: " << player->getName()
<< " started digging "
<< PP(nocheat_p) << " and completed digging "
<< PP(p_under) << "; not digging." << std::endl;
is_valid_dig = false;
// Call callbacks
m_script->on_cheat(playersao, "finished_unknown_dig");
}
// Get player's wielded item
ItemStack playeritem;
InventoryList *mlist = playersao->getInventory()->getList("main");
if(mlist != NULL)
playeritem = mlist->getItem(playersao->getWieldIndex());
ToolCapabilities playeritem_toolcap =
playeritem.getToolCapabilities(m_itemdef);
// Get diggability and expected digging time
DigParams params = getDigParams(m_nodedef->get(n).groups,
&playeritem_toolcap);
// If can't dig, try hand
if(!params.diggable) {
const ItemDefinition &hand = m_itemdef->get("");
const ToolCapabilities *tp = hand.tool_capabilities;
if(tp)
params = getDigParams(m_nodedef->get(n).groups, tp);
}
// If can't dig, ignore dig
if(!params.diggable) {
infostream << "Server: NoCheat: " << player->getName()
<< " completed digging " << PP(p_under)
<< ", which is not diggable with tool. not digging."
<< std::endl;
is_valid_dig = false;
// Call callbacks
m_script->on_cheat(playersao, "dug_unbreakable");
}
// Check digging time
// If already invalidated, we don't have to
if(!is_valid_dig) {
// Well not our problem then
}
// Clean and long dig
else if(params.time > 2.0 && nocheat_t * 1.2 > params.time) {
// All is good, but grab time from pool; don't care if
// it's actually available
playersao->getDigPool().grab(params.time);
}
// Short or laggy dig
// Try getting the time from pool
else if(playersao->getDigPool().grab(params.time)) {
// All is good
}
// Dig not possible
else {
infostream << "Server: NoCheat: " << player->getName()
<< " completed digging " << PP(p_under)
<< "too fast; not digging." << std::endl;
is_valid_dig = false;
// Call callbacks
m_script->on_cheat(playersao, "dug_too_fast");
}
}
/* Actually dig node */
if(is_valid_dig && n.getContent() != CONTENT_IGNORE) {
m_script->node_on_dig(p_under, n, playersao);
stat.add("dig", player->getName());
stat.add("dig_" + m_nodedef->get(n).name , player->getName());
}
v3s16 blockpos = getNodeBlockPos(floatToInt(pointed_pos_under, BS));
RemoteClient *client = getClient(peer_id);
// Send unusual result (that is, node not being removed)
if(m_env->getMap().getNode(p_under).getContent() != CONTENT_AIR) {
// Re-send block to revert change on client-side
client->SetBlockNotSent(blockpos);
} else {
client->ResendBlockIfOnWire(blockpos);
}
m_env->nodeUpdate(p_under, 5, 0);
}
} // action == 2
/*
3: place block or right-click object
*/
else if(action == 3) {
ItemStack item = playersao->getWieldedItem();
// Reset build time counter
if(pointed.type == POINTEDTHING_NODE &&
item.getDefinition(m_itemdef).type == ITEM_NODE)
getClient(peer_id)->m_time_from_building = 0.0;
if(pointed.type == POINTEDTHING_OBJECT) {
// Right click object
// Skip if object has been removed
if(pointed_object->m_removed)
return;
/* android bug - too many
actionstream<<player->getName()<<" right-clicks object "
<<pointed.object_id<<": "
<<pointed_object->getDescription()<<std::endl;
*/
// Do stuff
pointed_object->rightClick(playersao);
} else if(m_script->item_OnPlace(
item, playersao, pointed)) {
// Placement was handled in lua
// Apply returned ItemStack
if (playersao->setWieldedItem(item)) {
SendInventory(playersao);
}
stat.add("place", player->getName());
//stat.add("place_" + item.name, player->getName());
}
// If item has node placement prediction, always send the
// blocks to make sure the client knows what exactly happened
RemoteClient *client = getClient(peer_id);
v3s16 blockpos = getNodeBlockPos(floatToInt(pointed_pos_above, BS));
v3s16 blockpos2 = getNodeBlockPos(floatToInt(pointed_pos_under, BS));
if(item.getDefinition(m_itemdef).node_placement_prediction != "") {
client->SetBlockNotSent(blockpos);
if(blockpos2 != blockpos) {
client->SetBlockNotSent(blockpos2);
}
} else {
client->ResendBlockIfOnWire(blockpos);
if(blockpos2 != blockpos) {
client->ResendBlockIfOnWire(blockpos2);
}
}
m_env->nodeUpdate(p_under, 5, 0);
} // action == 3
/*
4: use
*/
else if(action == 4) {
ItemStack item = playersao->getWieldedItem();
actionstream << player->getName() << " uses " << item.name
<< ", pointing at " << pointed.dump() << std::endl;
if(m_script->item_OnUse(
item, playersao, pointed)) {
// Apply returned ItemStack
if (playersao->setWieldedItem(item)) {
SendInventory(playersao);
}
stat.add("use", player->getName());
stat.add("use_" + item.name, player->getName());
m_env->nodeUpdate(p_under, 5, 0);
}
} // action == 4
/*
5: rightclick air
*/
else if (action == 5) {
ItemStack item = playersao->getWieldedItem();
actionstream << player->getName() << " activates "
<< item.name << std::endl;
if (m_script->item_OnSecondaryUse(
item, playersao)) {
if( playersao->setWieldedItem(item)) {
SendInventory(playersao);
}
}
}
/*
Catch invalid actions
*/
else {
infostream << "WARNING: Server: Invalid action "
<< action << std::endl;
}
}
