World fails to generate with GregTech installed

[MCTian-mi]

Modpack

• CodeChicken Lib [3.2.3.358]
• CubicChunks [1.12.2-0.0.1271.0-SNAPSHOT]
• DimensionalLayers [4.12]
• GregTech [2.8.10-beta]
• HookLib [3.4]
• MixinBooter [10.2]

World customization preset
N/A

World seed
N/A

Teleport command to problematic coordinates
N/A

Crash-report file
latest.log
debug.log

Steps to reproduce the crash

1. Install above mentioned mods
2. Try to generate a world
3. Game freezes
4. Cry helplessly

Note: randomly the world managed to generate, if you're lucky enough. But mostly it fails to do so.
I also tried adding gregtech to some of the options in the config but that didn't help.

[MCTian-mi]

ah well this is technically not a crash
sorry for that

[hohserg1]

huh, logs kinda doesnt contains any clue
is GregTech compatible with pure CC?
and plz, paste World customization preset and World seed, I need it to reproduce bug

[MCTian-mi]

this seems to be an issue between cc & gregtech
using a custom cc build merging OpenCubicChunks/CubicChunks#775 allows the stacktrace to be printed normally
this is an issue on gregtechceu side
this code def isn't written with dynamic world height in mind

[MCTian-mi]

huh, logs kinda doesnt contains any clue is GregTech compatible with pure CC? and plz, paste World customization preset and World seed, I need it to reproduce bug

ah sorry I thought it wasn't seed or preset related
anyways closing this

[MCTian-mi]

I did try running gregtech with cc itself but that worked when I tried it
probably because of no rubber tree was generated in that seed
turns out I'm wrong on this

[hohserg1]

ok, its looks like, GT attempts to place tree at top of world and have custom loop logic of finding top
I see it should be too long loop at vanilla CC, but kinda it should work fine with DL bc DL using fake world with only 255 world height, so its strange

[MCTian-mi]

I tried disabling rubber tree generation in gregtech.cfg, or using a custom gregtech build with the generation code changed to use height map:

- pos.setPos(pos.getX() + 8, world.getHeight() - 1, pos.getZ() + 8);
+ pos.setPos(pos.getX() + 8, world.getHeight(pos.getX() + 8, pos.getZ() + 8), pos.getZ() + 8);

in both cases it worked fine with DL

[hohserg1]

ok, I see, DL have correct impl of getHeight(x,z), but wrong impl of getHeight()
I can improve it, so thank you!