Observation: The two structures don't have the same nested structure

Hello,

I am trying to implement the RL Agents into my project and I am facing a very strange issue.

First structure: type=dict str={'obs': [1, 1120]}

Second structure: type=OrderedDict str=OrderedDict([('obs', array([ 0.74411386, -0.83825755], dtype=float32))])

More specifically: Substructure "type=list str=[1, 1120]" is a sequence, while substructure "type=ndarray str=[ 0.74411386 -0.83825755]" is not
Entire first structure:
{'obs': [., .]}
Entire second structure:
OrderedDict([('obs', .)])
Result for PPO_godot_1186f_00000:
  date: 2022-06-20_20-52-10
  experiment_id: e62b8b1e8d5349189952f56cbb07b08f
  hostname: DESKTOP-CQGL49S
  node_ip: 172.23.164.16
  pid: 19821
  timestamp: 1655751130
  trial_id: 1186f_00000

However, my Godot console output indicates that the structure is indeed the same:

getting command line arguments
Waiting for one second to allow server to start
trying to connect to server
02
performing handshake
handshake complete
[1, 1120]
resetting all agents
[1, 1120]
[-1, 1120]
server disconnected, closing

This is my code:

# The observation of the agent, think of what is the key information that is needed to perform the task, try to have things in coordinates that a relative to the play
# return a dictionary with the "obs" as a key, you can have several keys

    var obs := []
    # other player data
    if (get_parent().get_child_count() > 1):
        for child in get_parent().get_children():
            if (child != get_node(".")):
                if (child.position.x > position.x):
                    obs.append(1)
                else:
                    obs.append (-1)

                obs.append(int(position.distance_to(child.position)))

    print(obs)

    return {
        "obs": obs
       }

func get_obs_space():
    # typs of obs space: box, discrete, repeated
    return {
        "obs": {
            "size": [len(get_obs()["obs"])],
            "space": "box"
           }
       }

The only way I can get it to work at all is by appending a 0.0 first and then just appending the direction (the 1 or -1). Everything else I tried just simply does not work and results in this error.

Edit: I figured it out. The observations need to be between -1 to 1. It would be great if this was written prominently somewhere for newbies like myself :)

edbeeching / godot_rl_agents

Observation: The two structures don't have the same nested structure #19