Causes GregTech multiblock structure preview to fail to render properly when installed alongside GregTech

[Schabe-Antimonfeld]

Description

When installed together with GregTech and JEI, the GregTech multiblock structure preview fails to render properly, as shown in the screenshot below:

Steps to Reproduce:

1. Install L2Hostility and its dependencies.
2. Install GregTech Modern.
3. Install JEI.

Log excerpt:

java.lang.NullPointerException: Cannot invoke "com.lowdragmc.lowdraglib.utils.DummyWorld.m_141937_()" because "this.world" is null
at ldlib.com.lowdragmc.lowdraglib.utils.virtual.VirtualChunk.m_141937_(VirtualChunk.java:208)
at l2hostility.dev.xkmc.l2hostility.content.capability.chunk.ChunkDifficulty.init(ChunkDifficulty.java:91)
...

The full log is attached.
minecraft-exported-logs-2025-08-13T15-22-36.log

Environment

• Minecraft 1.20.1
• Forge 47.4.6
• L2 Complements 2.5.7
• L2 Library 2.5.3
• Patchouli 84.1
• L2 Hostility 2.5.9
• GregTech Modern 7.1.4
• JEI 15.20.0.112

Expected Behavior:

Multiblock structures should render correctly, as shown in the following screenshot:

Additional Information:

The crash appears related to the interaction between LDLib’s(which is built in GregTech) virtual world rendering and L2Hostility’s chunk capability initialization. It specifically affects GregTech multiblock structures preview.

[Schabe-Antimonfeld]

Moreover, in other cases when gt load its 3d
preview (like in the machine gui), the game will crash.

[lcy0x1]

Looks like it triggered L2H's chunk difficulty initialization and L2H asking for world height causing the crash. Can be fixed by GregTech returning a dummy value (let's say, 16) for world height