pub struct RoomPosition(i32); // Doesnt matter for now

impl RoomPosition {
    pub fn find_in_range<T: FindConstant>(&self, _ty: T, _range: u32) -> Vec<T::Item> {
        vec![]
    }
}

pub trait FindConstant {
    type Item: FromExpectedType<i32>;
}

#[derive(Debug)]
pub struct ConversionError;

pub trait FromExpectedType<T>: Sized {
    fn from_expected_type(v: T) -> Result<Self, ConversionError>;
}

pub fn count_in_range<T, F>(pos: RoomPosition, find_type: T, range: u32, filter: F) -> u32
where
    T : FindConstant,
    for<'r> F : FnMut(&'r T::Item) -> bool
{
    pos
        .find_in_range(find_type, range)
        .into_iter()
        .filter(filter)
        .count() as u32
}