Made directions public, added bounds checking.

1 files changed, 7 insertions, 0 deletions

diff --git a/common.py b/common.py
index 7ccf8e9..50b8eb0 100644
--- a/common.py
+++ b/common.py
@@ -1,5 +1,12 @@
 import os
 
+directions = {
+    'U': (0, -1),
+    'D': (0, 1),
+    'L': (-1, 0),
+    'R': (1, 0),
+}
+
 class Squares(object):
     EMPTY = '.'
     APPLE = '*'