tModLoader How do you make a boss summon only in a certain biome with a summoning item?

[Reelscoobey]

I'm trying to make a boss summon item only allow you to summon the boss in the underworld. I've searched everywhere for a tutorial on how to do this, and I even checked Example Mod. None of my code is working. Any help would be great. (this might be the wrong place to put this)

 

[Reelscoobey]

Update: I found out how

 

[aooiaeio]

do u mind sending the code for it or where u found it? i also cant find it anywhere

 

[TWillyH]

I need this too, where did you find the fix you needed?

 

[Michaelsoftman]

Boss Summon Item

So in this code, in the CanUseItem method, you can check player.zoneUnderworld to have it usable only in the underworld, or whatever criteria you'd like.