Upload alea/envs/gridworld.py with huggingface_hub

alea/envs/gridworld.py

@@ -115,6 +115,9 @@ class GridworldEnv(DecisionEnv):
         self.pos = (nr, nc)
         self.dist = self._bfs()
         self.steps += 1
+        if not self._legal():
+            self._done = True
+            return 0.0, True
         if self.pos == self.goal:
             self._done = True
             return 1.0, True