TileTypes (probably just BGT)

 

GRF can define TileTypes

 

These are

- ground surface

- optional greeble (lights and stuff)

 

TileTypes are in some kind of pool.

 

When constructing road, rail, station, or objects, UI offers player all of the available TileTypes to use as ground.

 

I had an idea around CargoTiles (any TileType can define optional layer of cargo graphics if used as part of any station), but they might be unrelated.

 

Probably not useful for houses and industries.

 

I see no use for them in water tiles, or current implementation of airports.