HC_ChunkSpawnDataFix

Hyxin mixin plugin that fixes several NullPointerException and ArrayIndexOutOfBoundsException crashes in the Hytale server's chunk and spawning systems. The vanilla server uses assert statements for null checks which are disabled in production, causing crashes when chunks unload mid-tick or when saved world data has a different section count than expected.

Features

• Patches WorldSpawningSystem.tick() to null-guard ChunkSpawnData in the unspawnable chunk loop
• Patches WorldSpawningSystem.createRandomSpawnJob() to check ChunkSpawnData before adding SpawnJobData, preventing orphaned components on early return
• Patches WorldSpawningSystem.pickRandomChunk() to null-guard both ChunkSpawnData and ChunkSpawnedNPCData in iteration loops and lambda functions
• Patches BlockHealthSystem.tick() to handle stale player entity references and null ChunkTracker components during player disconnect/teleport transitions
• Patches BlockChunk.loadFromHolder() to clamp section iteration when saved chunk data has more sections than the current server expects (e.g., 11 vs 10 from worlds saved with a different height)
• Deployed as a Hyxin early plugin (loads into earlyplugins/ directory)

Dependencies

None (standalone mixin plugin).

Building

./gradlew build