Facepixels

[michael20at]

Hi,

i was trying to expand go-explore for other games (gym and retro), but ran into the problem of facepixels. As far as I understand you use it to identify player coordinates.

I tried to get the pixel value for super-mario-bros from a gray scale picture, but you commented that the pixel value must be unique (not used elsewhere in the scene), which is not possible for mario and most other games (gym, atari, retro).

Did I understood this wrong and is there any way to make other games work with face pixels (without using x and y coordinates, which are often not avaiable, also would require a rewrite)? How to determine which value to use?