It moves!
Presenting the driller, the stupid robot with a simple behavior: always hovers in the direction he’s facing until he faces an obstacle (for now, everything is an obstacle, later lava/water/holes will be lethal), then he tries to run right… if he can’t, he’ll turn left… if he can’t, he’ll walk backwards…

I got the driller to move around, with the camera focused on him (with some controls for zoom and rotation):
Now, to model and add the helper robot…

