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  1. Minecraft: Java Edition
  2. MC-266682

Biome sources using inline biomes is not prevented by data pack validation

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    • Icon: Bug Bug
    • Resolution: Duplicate
    • None
    • 1.20.2, 23w45a
    • None
    • Unconfirmed
    • Data Packs

      The bug

      When using a biome source that has a biome in inline format, instead of using a reference, the world will fail to generate and lots of errors will show in the log.

      How to reproduce

      1. Download the attached data pack MC-266682.zip
      2. Create a new world, add the data pack, and click done
      3. Notice that the data pack validated
      4. Confirm creating the world
      5. Terrain is not generated and errors are spammed in the log

      Expected behavior

      The data pack would fail to validate, the codec should not allow inline biomes since a biome ID is required in lots of places.

      Error messages

      Failed to save chunk 6,-1
java.lang.NullPointerException

      Error executing task on Client
java.lang.IllegalArgumentException: No value with id -1
	at hj.b(SourceFile:19)
	at dhu.a(SourceFile:83)
	at dhy.a(SourceFile:175)
	at dhr.a(SourceFile:159)
	at dhq.a(SourceFile:456)
	at fit.a(SourceFile:117)
	at fiy.a(SourceFile:732)
	at fiy.a(SourceFile:697)
	at yg.a(SourceFile:45)
	at yg.a(SourceFile:12)
	at vf.a(SourceFile:23)
	at bfo.d(SourceFile:156)
	at bfs.d(SourceFile:23)
	at bfo.x(SourceFile:130)
	at bfo.bp(SourceFile:115)
	at eqv.d(SourceFile:1231)
	at eqv.f(SourceFile:856)
	at net.minecraft.client.main.Main.main(SourceFile:253)

        1. MC-266682.zip
          1 kB
        2. output log screenshot.png
          output log screenshot.png
          256 kB

            Unassigned Unassigned
            Misoloo [Helper] Misode
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              Created:
              Updated:
              Resolved: