Factorio Forums

I'm not too sure how much this a bug or not, but when I spawned unit groups and set_command on it to attack area spawn it randomly fails. See the attached save. After one tick the unit group is spawned and the command is set (set_moving is also done, but not doing does not affect the outcome). One tick later the debug drawing shows the group having state 1-moving (likely previous tick, LuaRendering seems to be delayed a tick.). Another tick later the debug drawing shows the group having state 4-finished. The on_ai_command_completed event indicates the command failed.

I worked around it by despawning the group when it failed so nothing important.

They seem to work now,
When I loaded the test save they all moved to the center of the attack area

I tested it on 0.17.62 just now and they don't all move to the centre. Is this fixed for the next version or something? (groups still stay stuck on the shore, save is one tick before one of the groups that get stuck spawns.)

Oh, the ones near the shore?

I think you are spawning too close to the shore,
The unit group has to pathfind from its current position, and if its colliding with the shore then it won't be able to find a path