[engine] fix

src/common/haxe/ru/m/geom/Direction.hx

@@ -23,6 +23,10 @@ class Direction {
         return from(-x, -y);
     }
 
+    public function equals(other:Direction):Bool {
+        return other.x == x && other.y == y;
+    }
+
     public static function from(x:Int, y:Int):Direction {
         return directions.get(x + y * 10);
     }
@@ -36,4 +40,8 @@ class Direction {
             case _: null;
         }
     }
+
+    public function toString():String {
+        return 'Direction{x=$x,y=$y}';
+    }
 }