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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 "lua_api/l_nodemeta.h"
- #include "lua_api/l_internal.h"
- #include "lua_api/l_inventory.h"
- #include "common/c_content.h"
- #include "serverenvironment.h"
- #include "map.h"
- #include "mapblock.h"
- #include "server.h"
- /*
- NodeMetaRef
- */
- IMetadata* NodeMetaRef::getmeta(bool auto_create)
- {
- if (m_is_local)
- return m_local_meta;
- NodeMetadata *meta = m_env->getMap().getNodeMetadata(m_p);
- if (meta == NULL && auto_create) {
- meta = new NodeMetadata(m_env->getGameDef()->idef());
- if (!m_env->getMap().setNodeMetadata(m_p, meta)) {
- delete meta;
- return NULL;
- }
- }
- return meta;
- }
- void NodeMetaRef::clearMeta()
- {
- SANITY_CHECK(!m_is_local);
- m_env->getMap().removeNodeMetadata(m_p);
- }
- void NodeMetaRef::reportMetadataChange(const std::string *name)
- {
- SANITY_CHECK(!m_is_local);
- // Inform other things that the metadata has changed
- NodeMetadata *meta = dynamic_cast<NodeMetadata*>(getmeta(false));
- // If the metadata is now empty, get rid of it
- if (meta && meta->empty()) {
- clearMeta();
- meta = nullptr;
- }
- MapEditEvent event;
- event.type = MEET_BLOCK_NODE_METADATA_CHANGED;
- event.setPositionModified(m_p);
- event.is_private_change = name && meta && meta->isPrivate(*name);
- m_env->getMap().dispatchEvent(event);
- }
- // Exported functions
- // get_inventory(self)
- int NodeMetaRef::l_get_inventory(lua_State *L)
- {
- MAP_LOCK_REQUIRED;
- NodeMetaRef *ref = checkObject<NodeMetaRef>(L, 1);
- ref->getmeta(true); // try to ensure the metadata exists
- InventoryLocation loc;
- loc.setNodeMeta(ref->m_p);
- InvRef::create(L, loc);
- return 1;
- }
- // mark_as_private(self, <string> or {<string>, <string>, ...})
- int NodeMetaRef::l_mark_as_private(lua_State *L)
- {
- MAP_LOCK_REQUIRED;
- NodeMetaRef *ref = checkObject<NodeMetaRef>(L, 1);
- NodeMetadata *meta = dynamic_cast<NodeMetadata*>(ref->getmeta(true));
- assert(meta);
- if (lua_istable(L, 2)) {
- lua_pushnil(L);
- while (lua_next(L, 2) != 0) {
- // key at index -2 and value at index -1
- luaL_checktype(L, -1, LUA_TSTRING);
- meta->markPrivate(readParam<std::string>(L, -1), true);
- // removes value, keeps key for next iteration
- lua_pop(L, 1);
- }
- } else if (lua_isstring(L, 2)) {
- meta->markPrivate(readParam<std::string>(L, 2), true);
- }
- ref->reportMetadataChange();
- return 0;
- }
- void NodeMetaRef::handleToTable(lua_State *L, IMetadata *_meta)
- {
- // fields
- MetaDataRef::handleToTable(L, _meta);
- NodeMetadata *meta = dynamic_cast<NodeMetadata*>(_meta);
- assert(meta);
- // inventory
- Inventory *inv = meta->getInventory();
- if (inv) {
- push_inventory_lists(L, *inv);
- } else {
- lua_newtable(L);
- }
- lua_setfield(L, -2, "inventory");
- }
- // from_table(self, table)
- bool NodeMetaRef::handleFromTable(lua_State *L, int table, IMetadata *_meta)
- {
- // fields
- if (!MetaDataRef::handleFromTable(L, table, _meta))
- return false;
- NodeMetadata *meta = dynamic_cast<NodeMetadata*>(_meta);
- assert(meta);
- // inventory
- Inventory *inv = meta->getInventory();
- lua_getfield(L, table, "inventory");
- if (lua_istable(L, -1)) {
- int inventorytable = lua_gettop(L);
- lua_pushnil(L);
- while (lua_next(L, inventorytable) != 0) {
- // key at index -2 and value at index -1
- std::string name = luaL_checkstring(L, -2);
- read_inventory_list(L, -1, inv, name.c_str(), getServer(L));
- lua_pop(L, 1); // Remove value, keep key for next iteration
- }
- lua_pop(L, 1);
- }
- return true;
- }
- NodeMetaRef::NodeMetaRef(v3s16 p, ServerEnvironment *env):
- m_p(p),
- m_env(env)
- {
- }
- NodeMetaRef::NodeMetaRef(IMetadata *meta):
- m_is_local(true),
- m_local_meta(meta)
- {
- }
- // Creates an NodeMetaRef and leaves it on top of stack
- // Not callable from Lua; all references are created on the C side.
- void NodeMetaRef::create(lua_State *L, v3s16 p, ServerEnvironment *env)
- {
- NodeMetaRef *o = new NodeMetaRef(p, env);
- //infostream<<"NodeMetaRef::create: o="<<o<<std::endl;
- *(void **)(lua_newuserdata(L, sizeof(void *))) = o;
- luaL_getmetatable(L, className);
- lua_setmetatable(L, -2);
- }
- // Client-sided version of the above
- void NodeMetaRef::createClient(lua_State *L, IMetadata *meta)
- {
- NodeMetaRef *o = new NodeMetaRef(meta);
- *(void **)(lua_newuserdata(L, sizeof(void *))) = o;
- luaL_getmetatable(L, className);
- lua_setmetatable(L, -2);
- }
- const char NodeMetaRef::className[] = "NodeMetaRef";
- void NodeMetaRef::Register(lua_State *L)
- {
- registerMetadataClass(L, className, methodsServer);
- }
- const luaL_Reg NodeMetaRef::methodsServer[] = {
- luamethod(MetaDataRef, contains),
- luamethod(MetaDataRef, get),
- luamethod(MetaDataRef, get_string),
- luamethod(MetaDataRef, set_string),
- luamethod(MetaDataRef, get_int),
- luamethod(MetaDataRef, set_int),
- luamethod(MetaDataRef, get_float),
- luamethod(MetaDataRef, set_float),
- luamethod(MetaDataRef, get_keys),
- luamethod(MetaDataRef, to_table),
- luamethod(MetaDataRef, from_table),
- luamethod(NodeMetaRef, get_inventory),
- luamethod(NodeMetaRef, mark_as_private),
- luamethod(MetaDataRef, equals),
- {0,0}
- };
- void NodeMetaRef::RegisterClient(lua_State *L)
- {
- registerMetadataClass(L, className, methodsClient);
- }
- const luaL_Reg NodeMetaRef::methodsClient[] = {
- luamethod(MetaDataRef, contains),
- luamethod(MetaDataRef, get),
- luamethod(MetaDataRef, get_string),
- luamethod(MetaDataRef, get_int),
- luamethod(MetaDataRef, get_float),
- luamethod(MetaDataRef, get_keys),
- luamethod(MetaDataRef, to_table),
- {0,0}
- };
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