A new command line interface has been added to Overcooked Simulator, which starts up the overcooked game engine server and a PyGame 2D Visualization window each in their own process. This is done using argparse for handling command line arguments. Furthermore, some minor changes have been introduced in the game server and GUI scripts to better handle processes and accept host and port arguments.

The server (game_server.py) and client communication (overcooked_gui.py) now uses the WebSocket communication protocol. In setup.py, the 'requests' module was added as a new requirement. The game simulator now waits for a player to be ready before starting, stops a game environment if no step is taken within a minute, and pauses or unpauses a game environment. Player actions are now handled based on a new 'Action' type. The server also now handles several client types that can send messages.