Add parameterization support to ghost build events

[Stringweasel]

What

Add a field to ghost build events to gives a mapping between parameters and the signals they need to replaced with. Something like

Code: Select all

parameters : dictionary[SignalID → SignalID]  : mapping from parameter signal to signal it was replaced with

Will probably be needed for the events: on_built_entity, on_space_platform_built_entity and on_robot_built_entity.

Why

There's many mods with scripted entities that internally have conditions based on signals, or names. For example Space Exploration's custom landing pad names. It would be very powerful for players if we could support their parameterized blueprints to allow more generic blueprints.