implement breadth-first search pathfinding

1 files changed, 2 insertions, 0 deletions

diff --git a/XY.h b/XY.h
index 2aac824..839e19f 100644
--- a/XY.h
+++ b/XY.h
@@ -9,5 +9,7 @@ struct XY {
 	XY operator - (const XY &) const;
 	XY& operator += (const XY &);
 	XY& operator -= (const XY &);
+	bool operator == (const XY& other) const;
+	bool operator != (const XY& other) const;
 };