minetest.git - modified minetest for gpcfs purposes

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Diffstat (limited to 'src/mg_decoration.h')

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/* 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 "rollback_interface.h" #include <sstream> #include "util/serialize.h" #include "util/string.h" #include "util/numeric.h" #include "util/basic_macros.h" #include "map.h" #include "gamedef.h" #include "nodedef.h" #include "nodemetadata.h" #include "exceptions.h" #include "log.h" #include "inventorymanager.h" #include "inventory.h" #include "mapblock.h" RollbackNode::RollbackNode(Map *map, v3s16 p, IGameDef *gamedef) { const NodeDefManager *ndef = gamedef->ndef(); MapNode n = map->getNode(p); name = ndef->get(n).name; param1 = n.param1; param2 = n.param2; NodeMetadata *metap = map->getNodeMetadata(p); if (metap) { std::ostringstream os(std::ios::binary); metap->serialize(os, 1); // FIXME: version bump?? meta = os.str(); } } std::string RollbackAction::toString() const { std::ostringstream os(std::ios::binary); switch (type) { case TYPE_SET_NODE: os << "set_node " << PP(p); os << ": (" << serializeJsonString(n_old.name); os << ", " << itos(n_old.param1); os << ", " << itos(n_old.param2); os << ", " << serializeJsonString(n_old.meta); os << ") -> (" << serializeJsonString(n_new.name); os << ", " << itos(n_new.param1); os << ", " << itos(n_new.param2); os << ", " << serializeJsonString(n_new.meta); os << ')'; case TYPE_MODIFY_INVENTORY_STACK: os << "modify_inventory_stack ("; os << serializeJsonString(inventory_location); os << ", " << serializeJsonString(inventory_list); os << ", " << inventory_index; os << ", " << (inventory_add ? "add" : "remove"); os << ", " << serializeJsonString(inventory_stack.getItemString()); os << ')'; default: return "<unknown action>"; } return os.str(); } bool RollbackAction::isImportant(IGameDef *gamedef) const { if (type != TYPE_SET_NODE) return true; // If names differ, action is always important if(n_old.name != n_new.name) return true; // If metadata differs, action is always important if(n_old.meta != n_new.meta) return true; const NodeDefManager *ndef = gamedef->ndef(); // Both are of the same name, so a single definition is needed const ContentFeatures &def = ndef->get(n_old.name); // If the type is flowing liquid, action is not important if (def.liquid_type == LIQUID_FLOWING) return false; // Otherwise action is important return true; } bool RollbackAction::getPosition(v3s16 *dst) const { switch (type) { case TYPE_SET_NODE: if (dst) *dst = p; return true; case TYPE_MODIFY_INVENTORY_STACK: { InventoryLocation loc; loc.deSerialize(inventory_location); if (loc.type != InventoryLocation::NODEMETA) { return false; } if (dst) *dst = loc.p; return true; } default: return false; } } bool RollbackAction::applyRevert(Map *map, InventoryManager *imgr, IGameDef *gamedef) const { try { switch (type) { case TYPE_NOTHING: return true; case TYPE_SET_NODE: { const NodeDefManager *ndef = gamedef->ndef(); // Make sure position is loaded from disk map->emergeBlock(getContainerPos(p, MAP_BLOCKSIZE), false); // Check current node MapNode current_node = map->getNode(p); std::string current_name = ndef->get(current_node).name; // If current node not the new node, it's bad if (current_name != n_new.name) { return false; } // Create rollback node content_t id = CONTENT_IGNORE; if (!ndef->getId(n_old.name, id)) { // The old node is not registered return false; } MapNode n(id, n_old.param1, n_old.param2); // Set rollback node try { if (!map->addNodeWithEvent(p, n)) { infostream << "RollbackAction::applyRevert(): " << "AddNodeWithEvent failed at " << PP(p) << " for " << n_old.name << std::endl; return false; } if (n_old.meta.empty()) { map->removeNodeMetadata(p); } else { NodeMetadata *meta = map->getNodeMetadata(p); if (!meta) { meta = new NodeMetadata(gamedef->idef()); if (!map->setNodeMetadata(p, meta)) { delete meta; infostream << "RollbackAction::applyRevert(): " << "setNodeMetadata failed at " << PP(p) << " for " << n_old.name << std::endl; return false; } } std::istringstream is(n_old.meta, std::ios::binary); meta->deSerialize(is, 1); // FIXME: version bump?? } // Inform other things that the meta data has changed MapEditEvent event; event.type = MEET_BLOCK_NODE_METADATA_CHANGED; event.p = p; map->dispatchEvent(event); } catch (InvalidPositionException &e) { infostream << "RollbackAction::applyRevert(): " << "InvalidPositionException: " << e.what() << std::endl; return false; } // Success return true; } case TYPE_MODIFY_INVENTORY_STACK: { InventoryLocation loc; loc.deSerialize(inventory_location); Inventory *inv = imgr->getInventory(loc); if (!inv) { infostream << "RollbackAction::applyRevert(): Could not get " "inventory at " << inventory_location << std::endl; return false; }


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