CompassAngle changing even when agent does not move

NeurIPS 2019 : MineRL Competition
#1

In the MineRLNavigateDense-v0 environment, even if I don’t perform any action, the compassAngle keeps changing. Have a look in the next example, where I don’t perform any action (my action is to stay in the same place and don’t rotate my camera) and the compassAnge changes from 64 to 94!

Capture
Capture.PNG593×803 63.2 KB

Does anyone knows why is that?

Thanks!

#2

The compass observation in Minecraft has momentum and starts at a fixed point. So even if you stand still there could still be some oscillation of the compass direction!

#3

Thanks, that makes sense. Maybe worth adding it to the documentation?

1 Like
#4

Where would you look first? The Treechop env or the compass observation specification?

#5

I was looking to MineRLNavigateDense-v0 in the documentation, which hold some specifications about the compass, i.e.

Dict({
"compassAngle": "Box()",
"inventory": {
        "dirt": "Box()"
},
"pov": "Box(64, 64, 3)"

})

http://minerl.io/docs/environments/index.html#minerlnavigatedense-v0

Or do you mean other specifications?

Thanks

#6

Great - I’ll make a todo to update the documentation there - it should become blue and link to a description of the observation

1 Like