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use grid_2d::Coord;
use direction::Direction;
pub trait SolidGrid {
fn is_solid(&self, coord: Coord) -> Option<bool>;
fn is_solid_or_outside(&self, coord: Coord) -> bool {
self.is_solid(coord).unwrap_or(true)
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum CostCell<Cost> {
Solid,
Cost(Cost),
}
impl<Cost> CostCell<Cost> {
pub fn is_solid(&self) -> bool {
if let &CostCell::Solid = self {
true
} else {
false
}
}
}
pub trait CostGrid: SolidGrid {
type Cost;
fn cost(&self, coord: Coord, direction: Direction) -> Option<CostCell<Self::Cost>>;
}