code: def observe(self, reward=0, terminal=False, **kwargs):
      if self.current_state is None:
          return None
  
      self.current_step += 1
      print(self.current_step)
  
      self.rewards.append((reward, terminal))
  
      if terminal:
          InputRecorder.pause_input_recording()
  
          input_events = list()
          input_event_count = self.redis_client.llen(
              config["input_recorder"]["redis_key"]
          )
  
          for i in range(input_event_count):
              input_events.append(
                  pickle.loads(
                      self.redis_client.lpop(
                          config["input_recorder"]["redis_key"]
                      )
                  )
              )
  
          data = self._merge_frames_and_input_events(input_events)
  
          latest_game_frame_buffer = None
          rewards_index = 0
  
          active_keys = set()
          down_keys = dict()
  
          observations = dict()
  
          for item in data:
              if isinstance(item, GameFrameBuffer):
                  latest_game_frame_buffer = item
  
                  reward, terminal = self.rewards[rewards_index]
                  rewards_index += 1
  
                  timestamp = item.frames[-2].timestamp
                  observations[timestamp] = [
                      item,
                      dict(),
                      list(active_keys),
                      list(),
                      reward,
                      terminal,
                  ]
              elif item["type"] == "keyboard":
                  key_name, key_event = item["name"].split("-")
  
                  if key_event == "DOWN":
                      active_keys.add(key_name)
  
                      if latest_game_frame_buffer is not None:
                          timestamp = latest_game_frame_buffer.frames[
                              -2
                          ].timestamp
                          observations[timestamp][1][key_name] = item[
                              "timestamp"
                          ]
  
                          down_keys[key_name] = timestamp
  
                  elif key_event == "UP":
                      if key_name in active_keys:
                          active_keys.remove(key_name)
  
                      if key_name in down_keys:
                          timestamp = down_keys[key_name]
  
                          duration = (
                              item["timestamp"]
                              - observations[timestamp][1][key_name]
                          )
                          observations[timestamp][1][
                              key_name
                          ] = duration
  
                          del down_keys[key_name]
              elif item["type"] == "mouse":
                  if latest_game_frame_buffer is not None:
                      timestamp = latest_game_frame_buffer.frames[
                          -2
                      ].timestamp
                      observations[timestamp][3].append(item)
  
          with h5py.File(
              f"datasets/{self.name}_input_recording.h5", "a"
          ) as f:
              i = 0
  
              for timestamp, observation in observations.items():
                  (
                      game_frame_buffer,
                      keyboard_inputs,
                      keyboard_inputs_active,
                      mouse_inputs,
                      reward,
                      terminal,
                  ) = observation
  
                  f.create_dataset(
                      f"{timestamp}-frames",
                      data=[
                          game_frame.to_png_bytes()
                          for game_frame in game_frame_buffer.frames
                      ],
                  )
  
                  f.create_dataset(
                      f"{timestamp}-keyboard-inputs",
                      data=[
                          (
                              key_name.encode("utf-8"),
                              str(duration).encode("utf-8"),
                          )
                          for key_name, duration in keyboard_inputs.items()
                      ],
                  )
  
                  f.create_dataset(
                      f"{timestamp}-keyboard-inputs-active",
                      data=[
                          key_name.encode("utf-8")
                          for key_name in keyboard_inputs_active
                      ],
                  )
  
                  filtered_mouse_inputs = list()
                  mouse_move_index = None
  
                  valid_game_window_x = range(
                      self.window_geometry["x_offset"],
                      self.window_geometry["x_offset"]
                      + self.window_geometry["width"]
                      + 1,
                  )
  
                  valid_game_window_y = range(
                      self.window_geometry["y_offset"],
                      self.window_geometry["y_offset"]
                      + self.window_geometry["height"]
                      + 1,
                  )
  
                  for mouse_input in mouse_inputs:
                      if (
                          mouse_input["x"] in valid_game_window_x
                          and mouse_input["y"] in valid_game_window_y
                      ):
                          if mouse_input["name"] == "MOVE":
                              mouse_move_index = len(
                                  filtered_mouse_inputs
                              )
  
                          filtered_mouse_inputs.append(mouse_input)
  
                  mouse_input_data = list()
  
                  for i, mouse_input in enumerate(
                      filtered_mouse_inputs
                  ):
                      if (
                          mouse_input["name"] == "MOVE"
                          and i != mouse_move_index
                      ):
                          continue
  
                      mouse_input_data.append(
                          (
                              mouse_input["name"].encode("utf-8"),
                              mouse_input["button"].encode("utf-8")
                              if mouse_input["button"]
                              else b"",
                              mouse_input["direction"].encode("utf-8")
                              if mouse_input["direction"]
                              else b"",
                              mouse_input["velocity"] or b"",
                              mouse_input["x"],
                              mouse_input["y"],
                              mouse_input["timestamp"],
                          )
                      )
  
                  f.create_dataset(
                      f"{timestamp}-mouse-inputs", data=mouse_input_data
                  )
  
                  f.create_dataset(f"{timestamp}-reward", data=reward)
  
                  f.create_dataset(
                      f"{timestamp}-terminal", data=terminal
                  )
  
                  i += 1
  
              self.game_frame_buffers = list()
              self.rewards = list()
      else:
          InputRecorder.resume_input_recording()
  
      super().observe(reward=reward, terminal=terminal, **kwargs)
  
imports: from serpent.machine_learning.reinforcement_learning.agent import Agent
  from serpent.game_frame_buffer import GameFrameBuffer
  from serpent.input_recorder import InputRecorder
  from serpent.utilities import SerpentError, clear_terminal
  from serpent.enums import InputControlTypes
  from serpent.logger import Loggers
  from serpent.config import config
  import random
  import time
  import pickle
  import signal
  import atexit
  import subprocess
  import shlex
  import h5py
  from redis import StrictRedis
label_desc: Use image node_id 3 for calling the RecorderAgent obj's underlying member method code with example usage: obj.observe(reward, terminal) and returns: None