Remove env.window.closed and force version >= 2.2.0

Author: lcswillems

requirements.txt

@@ -1,5 +1,5 @@
 torch-ac>=1.4.0
-minigrid
+minigrid>=2.2.0
 tensorboardX>=1.6
 numpy>=1.3
 gymnasium>=0.26

scripts/visualize.py

@@ -76,12 +76,9 @@
         done = terminated | truncated
         agent.analyze_feedback(reward, done)
 
-        if done or env.window.closed:
+        if done:
             break
 
-    if env.window.closed:
-        break
-
 if args.gif:
     print("Saving gif... ", end="")
     write_gif(numpy.array(frames), args.gif+".gif", fps=1/args.pause)