fix: correct tail collision logic in SnakeGame and Snake

2026-06-17 19:04:32 +00:00
parent 0d9710965c
commit 7330880c96
2 changed files with 9 additions and 5 deletions
--- a/Snake.Core/Snake.cs
+++ b/Snake.Core/Snake.cs
@@ -55,8 +55,13 @@ public sealed class Snake
        return newHead;
    }

-    public bool Occupies(Position position) =>
-        _segments.Contains(position);
+    public bool Occupies(Position position, bool excludeTail = false)
+    {
+        if (excludeTail && _segments.Last is { } last && last.Value == position)
+            return false;
+
+        return _segments.Contains(position);
+    }

    private static Position DirectionToOffset(Direction direction) =>
        direction switch