[Script] Checking if player is inside or outside for fly (Firered)

[psyduckTAS]

I'm trying to create an item that replaces fly in the overworld. Using callasm 0x80C4EF9 in XSE, I can bring up the fly map and it works correctly except for one thing - the player is allowed to fly while inside.
I can't find any info on this. I've googled every combination of words I could think of.
I see in advance map that each map has a type in the header such as inside, underground, city etc. So if there's a way to check that in a script it should be pretty easy I would think.

Thanks for any help, I've figure out 99% of what I need to do for my hack mostly because of this website.

 

[Anon822]

I'm trying to create an item that replaces fly in the overworld. Using callasm 0x80C4EF9 in XSE, I can bring up the fly map and it works correctly except for one thing - the player is allowed to fly while inside.
I can't find any info on this. I've googled every combination of words I could think of.
I see in advance map that each map has a type in the header such as inside, underground, city etc. So if there's a way to check that in a script it should be pretty easy I would think.

Thanks for any help, I've figure out 99% of what I need to do for my hack mostly because of this website.

SetUpFieldMove_Fly is the function the game uses to determine if you can fly. You could call it from your ASM or C code.
The scripting engine itself doesn't have a convenient way to check whether you can fly, other than reading gMapHeader with one of the farbyte commands.