Currently, spawning an entity such as the airwolf vendor or boat vendor doesn't spawn their associated vending machine. The result is that players can see a dialogue option for a vending machine, but no vending machine is opened when that option is selected. This feature should probably be optional per NPC entity. Consider ways this can be introduced in a backwards compatible manner, so that existing NPCs don't suddenly have vending machines that weren't there previously.
Currently, spawning an entity such as the airwolf vendor or boat vendor doesn't spawn their associated vending machine. The result is that players can see a dialogue option for a vending machine, but no vending machine is opened when that option is selected. This feature should probably be optional per NPC entity. Consider ways this can be introduced in a backwards compatible manner, so that existing NPCs don't suddenly have vending machines that weren't there previously.