code: def step(self, action):
      assert self.action_space.contains(
          action
      ), f"{action!r} ({type(action)}) invalid"
      assert (
          self.state is not None
      ), "Call `reset` before using `step` method."
  
      env_action = self.__build_env_action(action)
      reward = self.game.make_action(env_action, self.frame_skip)
      self.state = self.game.get_state()
      terminated = self.game.is_episode_finished()
      truncated = (
          False  # Truncation to be handled by the TimeLimit wrapper
      )
      if self.render_mode == "human":
          self.render()
      return (
          self.__collect_observations(),
          reward,
          terminated,
          truncated,
          {},
      )
  
imports: import itertools
  import warnings
  from typing import Optional
  import gym
  import numpy
  import pygame
  from gym.utils import EzPickle
  import vizdoom.vizdoom
label_desc: Use image node_id 2 for calling the VizdoomEnv obj's underlying member method code with example usage: obj.step(action) and returns: self,  reward,  terminated,  truncated,  dict