How to make the roof of a house transparent when I enter the house, and comes up back when I exit the house?
I think one solution that I’ve seen is to use pictures. You need to scroll the picture around along with the map though, but this lets you have an entire piece you can fade out and fade in when the character enters and exits the house.
Hi, thanks for your solution! 
I also have found one solution that kind of do what you suggested
"Basically make all your maps without a rooftop. Then, in a program like Photoshop, create an image the exact same size as your map, and add in the rooftops for all of the houses. Leave everything else transparent. Then save this image in the picture folder. Find a script that fixes a picture to your map (I think Yanfly has one), and be sure to apply this to that picture.
Then simply have an event on that map run on parallel process and show the image. Use erase event afterwards.
Then create an event at each doorway (which could be the door itself, if you want), below player and player touch. Have it erase that picture, and turn self switch A on. Create a new event page with its condition set to self switch A. Below player and player touch. Show the same picture again and turn self switch A off. Do this for every house/door you have on the map."
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