fix: boxes pushable through tail

1 files changed, 3 insertions, 5 deletions

diff --git a/Snake.py b/Snake.py
index c53af73..a1e3dc4 100644
--- a/Snake.py
+++ b/Snake.py
@@ -16,13 +16,11 @@ class Snake:
 
     def move(self):
         nextPos = self.cells[0] + self.heading
+        last = self.cells.pop()
         if self.game.enter(nextPos, self.heading):
-            if nextPos in self.cells[1:len(self.cells)-1]:
-                self.hasCollided = True
-            else:
-                self.cells.pop()
-                self.cells.insert(0, nextPos)
+            self.cells.insert(0, nextPos)
         else:
+            self.cells.append(last)
             self.hasCollided = True
 
     def head(self):