Consider strategy where generation is built around asset importer #50
Description
An entirely different strategy to trigger and organize object generation, might be to integrate with the asset-importer system of unity. Geojson-files are then imported as prefabs with the generated objects (just like 3d-files are imported as prefabs). All current generator settings are set as import-settings (i.e. stored in the .meta-file).
Advantages:
- regeneration-logic is dealt with by unity
- we can take advantage of overrides (e.g. to remove buildings that we don't want to import, or other specific adjustments).
Disadvantages:
- requires quite some code restructuring, as the different types of generators (currently in different "Components"), will be configured from a single settings screen.
- makes it difficult to use the same geojson-file twice in the same scene (is this a problem?)
- detaches the generation logic from the scene