file structure for zelda- and pokemon-like games

[paede]

So lets say I want to make a pokemon game, how would I split my code into different files?

My guess is, that you would make a scene for each area of the map (routes, cities, buildings), but how would you keep the same player code for each scene?

Could someone show me an example of a big Phaser 3 game, with Levels or a big map, so I can copy the structure?

Thanks in advance