Method AddCost

src/command.cpp:401–409

* Adds the cost of the given command return value to this cost. * Also takes a possible error message when it is set. * @param ret The command to add the cost of. */

 * @param ret The command to add the cost of.
 */
void CommandCost::AddCost(CommandCost &&ret)
{
	this->AddCost(ret.cost);
	if (this->success && !ret.success) {
		this->message = ret.message;
		this->encoded_message = std::move(ret.encoded_message);
		this->success = false;
	}
}

/**
 * Return an error status, with string and parameter.