material Item_factory::material_from_json(Item_tag new_id, Item_tag index, picojson::value::object value_map, int to_return){
//If the value isn't found, just return a group of null materials
material material_list[2] = {MNULL, MNULL};
picojson::value::object::const_iterator value_pair = value_map.find(index);
if(value_pair != value_map.end()){
if(value_pair->second.is<std::string>()){
material_list[0] = material_from_tag(new_id, value_pair->second.get<std::string>());
} else if (value_pair->second.is<picojson::array>()) {
int material_count = 0;
const picojson::array& materials_json = value_pair->second.get<picojson::array>();
for (picojson::array::const_iterator iter = materials_json.begin(); iter != materials_json.end(); ++iter) {
if((*iter).is<std::string>()){
material_list[material_count] = material_from_tag(new_id, (*iter).get<std::string>());
} else {
std::cerr << "Item "<< new_id << " has a non-string material listed." << std::endl;
}
++material_count;
if(material_count > 2){
std::cerr << "Item "<< new_id << " has too many materials listed." << std::endl;
}
}
} else {
std::cerr << "Item "<< new_id << " material was skipped, not a string or array of strings." << std::endl;
}
}
return material_list[to_return];
}
//Grab int, with appropriate error handling
int Item_factory::int_from_json(Item_tag new_id, Item_tag index, picojson::value::object value_map){
picojson::value::object::const_iterator value_pair = value_map.find(index);
if(value_pair != value_map.end()){
if(value_pair->second.is<double>()){
return int(value_pair->second.get<double>());
} else {
std::cerr << "Item "<< new_id << " attribute name was skipped, not a number." << std::endl;
return 0;
}
} else {
//If the value isn't found, just return a 0
return 0;
}
}
//Grab string, with appropriate error handling
Item_tag Item_factory::string_from_json(Item_tag new_id, Item_tag index, picojson::value::object value_map){
picojson::value::object::const_iterator value_pair = value_map.find(index);
if(value_pair != value_map.end()){
if(value_pair->second.is<std::string>()){
return value_pair->second.get<std::string>();
} else {
std::cerr << "Item "<< new_id << " attribute " << index << "was skipped, not a string." << std::endl;
return "Error: Unknown Value";
}
} else {
//If string is not found, just return an empty string
return "";
}
}