Function veloren_world::sim::erosion::get_multi_drainage

pub fn get_multi_drainage(
    map_size_lg: MapSizeLg,
    mstack: &[u32],
    mrec: &[u8],
    mwrec: &[[f64; 8]],
    _boundary_len: usize,
) -> Box<[f64]>

Compute the water flux at all chunks for multiple receivers, given a list of chunk indices sorted by increasing height and weights for each receiver.