Factorio Forums

In a marginal case, the train z-layer rendering seems to swap strangely. I've only noticed this on diagonal tracks immediately next to each other so far. It is consistent, but very dependent on the actual location of the two trains next to each other. There is no flicker, the game clearly chooses a different ordering. I can provide a save file but it has expanded to 40MB by now. Let me know if you'd want it.

That's what we have to deal with trying to simulate 3D in a 2D world

Tbh I'd say that trains should simply collide in this case and make this track arrangement invalid

No don't. I can live with a rendering issue I never see. I really like my narrow rail track. Which, coincidentally, I believe to be much closer to the reality than leaving space in between.

That specific rail setup works by design. We even have tests that ensure trains work correctly on it.