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[CSM] Add local node meta reference. (#5508)
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@ -690,6 +690,8 @@ Call these functions only at load time!
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for unloaded areas.
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* `minetest.get_node_or_nil(pos)`
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* Same as `get_node` but returns `nil` for unloaded areas.
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* `minetest.get_meta(pos)`
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* Get a `NodeMetaRef` at that position
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### Player
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* `minetest.get_wielded_item()`
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@ -794,7 +796,18 @@ It can be created via `Settings(filename)`.
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* write changes to file
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* `to_table()`: returns `{[key1]=value1,...}`
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Definition tables
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### NodeMetaRef
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Node metadata: reference extra data and functionality stored in a node.
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Can be obtained via `minetest.get_meta(pos)`.
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#### Methods
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* `get_string(name)`
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* `get_int(name)`
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* `get_float(name)`
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* `to_table()`: returns `nil` or a table with keys:
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* `fields`: key-value storage
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* `inventory`: `{list1 = {}, ...}}`
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-----------------
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### Chat command definition (`register_chatcommand`)
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@ -28,6 +28,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
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#include "lua_api/l_sound.h"
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#include "lua_api/l_util.h"
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#include "lua_api/l_item.h"
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#include "lua_api/l_nodemeta.h"
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ClientScripting::ClientScripting(Client *client):
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ScriptApiBase()
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@ -68,4 +69,5 @@ void ClientScripting::InitializeModApi(lua_State *L, int top)
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LuaItemStack::Register(L);
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StorageRef::Register(L);
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LuaMinimap::Register(L);
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NodeMetaRef::RegisterClient(L);
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}
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@ -25,8 +25,11 @@ with this program; if not, write to the Free Software Foundation, Inc.,
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#include "gettext.h"
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#include "l_internal.h"
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#include "lua_api/l_item.h"
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#include "lua_api/l_nodemeta.h"
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#include "mainmenumanager.h"
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#include "util/string.h"
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#include "clientenvironment.h"
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#include "map.h"
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extern MainGameCallback *g_gamecallback;
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@ -182,6 +185,15 @@ int ModApiClient::l_get_wielded_item(lua_State *L)
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return 1;
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}
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// get_meta(pos)
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int ModApiClient::l_get_meta(lua_State *L)
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{
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v3s16 p = read_v3s16(L, 1);
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NodeMetadata *meta = getClient(L)->getEnv().getMap().getNodeMetadata(p);
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NodeMetaRef::createClient(L, meta);
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return 1;
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}
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void ModApiClient::Initialize(lua_State *L, int top)
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{
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API_FCT(get_current_modname);
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@ -196,4 +208,5 @@ void ModApiClient::Initialize(lua_State *L, int top)
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API_FCT(get_node_or_nil);
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API_FCT(get_wielded_item);
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API_FCT(disconnect);
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API_FCT(get_meta);
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}
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@ -62,6 +62,9 @@ private:
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// get_wielded_item()
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static int l_get_wielded_item(lua_State *L);
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// get_meta(pos)
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static int l_get_meta(lua_State *L);
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public:
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static void Initialize(lua_State *L, int top);
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};
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@ -38,6 +38,9 @@ NodeMetaRef* NodeMetaRef::checkobject(lua_State *L, int narg)
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Metadata* NodeMetaRef::getmeta(bool auto_create)
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{
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if (m_is_local)
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return m_meta;
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NodeMetadata *meta = m_env->getMap().getNodeMetadata(m_p);
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if (meta == NULL && auto_create) {
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meta = new NodeMetadata(m_env->getGameDef()->idef());
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@ -142,7 +145,14 @@ bool NodeMetaRef::handleFromTable(lua_State *L, int table, Metadata *_meta)
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NodeMetaRef::NodeMetaRef(v3s16 p, ServerEnvironment *env):
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m_p(p),
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m_env(env)
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m_env(env),
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m_is_local(false)
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{
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}
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NodeMetaRef::NodeMetaRef(Metadata *meta):
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m_meta(meta),
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m_is_local(true)
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{
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}
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@ -161,7 +171,17 @@ void NodeMetaRef::create(lua_State *L, v3s16 p, ServerEnvironment *env)
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lua_setmetatable(L, -2);
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}
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void NodeMetaRef::Register(lua_State *L)
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// Client-sided version of the above
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void NodeMetaRef::createClient(lua_State *L, Metadata *meta)
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{
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NodeMetaRef *o = new NodeMetaRef(meta);
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*(void **)(lua_newuserdata(L, sizeof(void *))) = o;
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luaL_getmetatable(L, className);
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lua_setmetatable(L, -2);
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}
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const char NodeMetaRef::className[] = "NodeMetaRef";
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void NodeMetaRef::RegisterCommon(lua_State *L)
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{
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lua_newtable(L);
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int methodtable = lua_gettop(L);
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@ -185,16 +205,17 @@ void NodeMetaRef::Register(lua_State *L)
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lua_settable(L, metatable);
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lua_pop(L, 1); // drop metatable
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luaL_openlib(L, 0, methods, 0); // fill methodtable
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lua_pop(L, 1); // drop methodtable
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// Cannot be created from Lua
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//lua_register(L, className, create_object);
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}
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const char NodeMetaRef::className[] = "NodeMetaRef";
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const luaL_reg NodeMetaRef::methods[] = {
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void NodeMetaRef::Register(lua_State *L)
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{
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RegisterCommon(L);
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luaL_openlib(L, 0, methodsServer, 0); // fill methodtable
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lua_pop(L, 1); // drop methodtable
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}
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const luaL_reg NodeMetaRef::methodsServer[] = {
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luamethod(MetaDataRef, get_string),
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luamethod(MetaDataRef, set_string),
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luamethod(MetaDataRef, get_int),
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@ -206,3 +227,20 @@ const luaL_reg NodeMetaRef::methods[] = {
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luamethod(NodeMetaRef, get_inventory),
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{0,0}
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};
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void NodeMetaRef::RegisterClient(lua_State *L)
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{
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RegisterCommon(L);
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luaL_openlib(L, 0, methodsClient, 0); // fill methodtable
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lua_pop(L, 1); // drop methodtable
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}
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const luaL_reg NodeMetaRef::methodsClient[] = {
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luamethod(MetaDataRef, get_string),
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luamethod(MetaDataRef, get_int),
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luamethod(MetaDataRef, get_float),
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luamethod(MetaDataRef, to_table),
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{0,0}
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};
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@ -22,6 +22,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
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#include "lua_api/l_base.h"
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#include "lua_api/l_metadata.h"
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#include "irrlichttypes_bloated.h"
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#include "nodemetadata.h"
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class ServerEnvironment;
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class NodeMetadata;
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@ -34,9 +35,12 @@ class NodeMetaRef : public MetaDataRef {
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private:
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v3s16 m_p;
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ServerEnvironment *m_env;
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Metadata *m_meta;
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bool m_is_local;
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static const char className[];
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static const luaL_reg methods[];
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static const luaL_reg methodsServer[];
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static const luaL_reg methodsClient[];
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static NodeMetaRef *checkobject(lua_State *L, int narg);
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@ -71,6 +75,7 @@ private:
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public:
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NodeMetaRef(v3s16 p, ServerEnvironment *env);
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NodeMetaRef(Metadata *meta);
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~NodeMetaRef();
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@ -78,7 +83,12 @@ public:
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// Not callable from Lua; all references are created on the C side.
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static void create(lua_State *L, v3s16 p, ServerEnvironment *env);
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// Client-sided version of the above
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static void createClient(lua_State *L, Metadata *meta);
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static void RegisterCommon(lua_State *L);
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static void Register(lua_State *L);
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static void RegisterClient(lua_State *L);
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};
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#endif /* L_NODEMETA_H_ */
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