LuaRef registerClass(lua_State* state)const
{
util::ScopedSavedStack save(state);
if (class_userdata::newmetatable<class_type>(state))
{
LuaTable metatable(state, StackTop());
metatable.push();
registerMember(state);
if (!traits::is_same<base_class_type, void>::value || !property_map_.empty())//if base class has property and derived class hasnt property. need property access metamethod
{
for (PropMapType::const_iterator it = property_map_.begin(); it != property_map_.end(); ++it)
{
int count = lua_type_traits<FunctorType>::push(state, it->second);
if (count > 1)
{
lua_pop(state, count - 1);
count = 1;
}
if (count == 1)
{
lua_setfield(state, -2, ("_prop_" + it->first).c_str());
}
}
LuaFunction indexfun = kaguya::LuaFunction::loadstring(state, "local arg = {...};local metatable = arg[1];"
"return function(table, index)"
// " if type(table) == 'userdata' then "
" local propfun = metatable['_prop_'..index];"
" if propfun then return propfun(table) end "
// " end "
" return metatable[index]"
" end")(metatable);
metatable.setField("__index", indexfun);
LuaFunction newindexfn = LuaFunction::loadstring(state, "local arg = {...};local metatable = arg[1];"
" return function(table, index, value) "
" if type(table) == 'userdata' then "
" local propfun = metatable['_prop_'..index];"
" if propfun then return propfun(table,value) end "
" end "
" rawset(table,index,value) "
" end")(metatable);
metatable.setField("__newindex", newindexfn);
}
else
{
metatable.setField("__index", metatable);
}
set_base_metatable(state, metatable, types::typetag<base_class_type>());
return metatable;
}
else
{
except::OtherError(state, typeid(class_type*).name() + std::string(" is already registered"));
}
return LuaRef(state);
}
void Entity::Enable()
{
assert(this->_self.IsTable());
this->_self.Set("id", this->_id);
Luasel::Ref metatable(this->_engine.GetInterpreter().MakeTable());
this->_self.SetMetaTable(metatable);
this->_self.Set("prototype", this->_type.GetPrototype());
metatable.Set("__index", this->_type.GetPrototype());
this->_engine.GetEntityManager().GetWeakEntityRefManager().GetResource(this->_weakReferenceId).disabled = false;
}
LuaTable createMatatable(lua_State* state)const
{
util::ScopedSavedStack save(state);
if (class_userdata::newmetatable<class_type>(state))
{
LuaStackRef metatable(state, -1);
registerMember(state);
if (!traits::is_same<base_class_type, void>::value || !property_map_.empty())//if base class has property and derived class hasnt property. need property access metamethod
{
LuaFunction indexfun = kaguya::LuaFunction::loadstring(state, "local arg = {...};local metatable = arg[1];"
"return function(table, index)"
// " if type(table) == 'userdata' then "
" local propfun = metatable['_prop_'..index];"
" if propfun then return propfun(table) end "
// " end "
" return metatable[index]"
" end")(metatable);
metatable.setField("__index", indexfun);
LuaFunction newindexfn = LuaFunction::loadstring(state, "local arg = {...};local metatable = arg[1];"
" return function(table, index, value) "
" if type(table) == 'userdata' then "
" local propfun = metatable['_prop_'..index];"
" if propfun then return propfun(table,value) end "
" end "
" rawset(table,index,value) "
" end")(metatable);
metatable.setField("__newindex", newindexfn);
}
else
{
metatable.setField("__index", metatable);
}
set_base_metatable(state, metatable, types::typetag<base_class_type>());
return metatable;
}
else
{
except::OtherError(state, typeid(class_type*).name() + std::string(" is already registered"));
}
return LuaTable();
}
