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[0.18.19] get_rail_segment_entity returns nil for rail signals at nearer position on rail
Posted: Thu Apr 23, 2020 11:15 pm
by Phoenix27833
Rail signals have two placement positions on a straight rail.
If the rail signal is at the further away position from the source rail for get_rail_segment_entity, the rail signal entity is returned.
However if the rail signal is at the closer position, get_rail_segment_entity returns nil.
I expect it to return the signal in both cases.
Re: [0.18.19] get_rail_segment_entity returns nil for rail signals at nearer position on rail
Posted: Fri Apr 24, 2020 5:17 am
by boskid
- 84128-setup.png (50.05 KiB) Viewed 1173 times
Code: Select all
/c
local rail = game.player.selected
game.print("front in: "..rail.get_rail_segment_entity(defines.rail_direction.front, true).unit_number)
game.print("front out: "..rail.get_rail_segment_entity(defines.rail_direction.front, false).unit_number)
game.print("back in: "..rail.get_rail_segment_entity(defines.rail_direction.back, true).unit_number)
game.print("back out: "..rail.get_rail_segment_entity(defines.rail_direction.back, false).unit_number)
This works fine for me, it shows unit number of every of the 4 rail signals.
I suspect you may be confused about where the rail segment end is.
- 84128-two-segments.png (48.63 KiB) Viewed 1173 times
In above case, there are 2 rail segments, left one will have 2 signals and right (with single rail piece) will have another 2 signals
Re: [0.18.19] get_rail_segment_entity returns nil for rail signals at nearer position on rail
Posted: Fri Apr 24, 2020 3:40 pm
by Phoenix27833
Segment - a series of rails that are not split in between by junctions, signals or stations. The basic unit for pathfinder.
Above returns nil in all cases
Above works fine
Re: [0.18.19] get_rail_segment_entity returns nil for rail signals at nearer position on rail
Posted: Fri Apr 24, 2020 3:54 pm
by boskid
Due to the signals, you have 3 rail segments on both images. In first case left segment will have 2 signals, center segment will have 0 signals and right segment will have 2 signals. In second case left segment will have 0 signals, center segment will have 4 signals and right segment will have 0 signals. This is working as expected and is not going to change.