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Flywheel causes strange lighting bug when creating large trains

ninyauwu opened this issue ยท 1 comments

commented

Describe the Bug

Trains are covered in black shadows that are stationary relative to the train while driving them, assuming the train in large enough. Smaller trains are not affected. From my testing it seems to have more to do with block count than p

Reproduction Steps

  1. Create a long track, at least three chunks in length.
  2. Create a train station.
  3. Build a train consisting of a sizeable chunk of blocks, something in the order of 7x5x23
  4. Place a train controller on top of the train
  5. Glue everything together and assemble
  6. Drive the train about 20 blocks forward
  7. You will see the lighting bug in question
  8. Execute the command /flywheel backend off
  9. The issue will disappear

Expected Result

Instead of the usual train lighting you get a big black shadow as if the train is failing to calculate lighting over such a large area. It can be fixed by turning off flywheel, however this causes immense lag.

Screenshots and Videos

2023-08-23_11 36 01
Here we see the train with the black lighting bug

2023-08-23_11 40 05
Here it is side by side with a windmill, which does not seem to be affected.

Crash Report or Log

No response

Operating System

Windows 10

Mod Version

0.5.1d

Minecraft Version

1.20.1

Forge Version

47.1.0

Other Mods

No other mods were used when showcasing this issue
Capture

Additional Context

This bug has been part of the create mod for a long time, at least for as long as trains have been part of the mod. Contraptions as a whole don't seem to be affected from my testing.

I would like to see this issue receive higher priority as it makes me completely avoid using trains, despite it otherwise being one of my favorite features of the mod.

commented

bump up the contraption light limit in the trains config