Use neighbours method in predator and prey.

2018-12-01 14:41:19 +01:00 · 2018-12-01 14:41:19 +01:00 · 3761bcfccf
commit 3761bcfccf
parent 6009f627ae
1 changed files with 1 additions and 2 deletions
--- a/src/bin/predprey/main.rs
+++ b/src/bin/predprey/main.rs
@ -71,8 +71,7 @@ fn send<T: Write>(w: &mut T, board: &Board) -> std::io::Result<()> {
 const DEFAULT_ARG: usize = 10;

 fn grow(board: &Board, pos: Point2d, grow: Square, die: Square) -> Square {
-    for dir in Vec2d::directions() {
-        let pos1 = pos + dir;
+    for pos1 in pos.neighbours() {
        if board.rect().contains(pos1) {
            let neigh_sq = board.get(pos1);
            if neigh_sq == grow {