implemented Distribution for Direction

src/hexmap.rs

@@ -1,4 +1,6 @@
 use crate::{Image, Tileset, Vec2};
+use rand::prelude::Distribution;
+use rand::Rng;
 use std::rc::Rc;
 
 //odd-q vertical layout https://www.redblobgames.com/grids/hexagons
@@ -125,3 +127,16 @@ impl HexMap {
         (coord.x + coord.y * self.size.x) as usize
     }
 }
+
+impl Distribution<Direction> for Direction {
+    fn sample<R: Rng + ?Sized>(&self, rng: &mut R) -> Direction {
+        match rng.gen_range(0..6) {
+            0 => Direction::North,
+            1 => Direction::NorthEast,
+            2 => Direction::SouthEast,
+            3 => Direction::South,
+            4 => Direction::SouthWest,
+            _ => Direction::NorthWest,
+        }
+    }
+}