[MC-1178] Invalid biome ID in Superflat crash Minecraft

If you use incorrect biome ID in a superflat preset, the world generation will stuck in "Converting world". It's difficult to close Minecraft without the Task manager.

How to reproduce :
1. Create new world
2. Go to "More world options"
3. Select superflat world type
4. Click on "Customize"
5. In the preset box, type 2;7;x;village
Replace x by any invalid biome id (below 0 or above 22)
6. Click on "Use preset"
7. Click on "Done"
8. Create the new world

EDIT 1:I get a crash report

Related issues

duplicates

MC-15072 The new launcher has cut my FPS down greatly / Not recognizing GPU

relates to

MC-31602 Crash Upon Generating New Chunk

MC-65986 Message in console: "Biome ID is out of bounds: 151720, defaulting to 0 (Ocean)"

Attachments

crash-2012-11-13_23.25.27-server.txt

crash-2012-12-06_21.15.29-server.txt

crash-2012-12-25_17.54.51-server.txt

crash-2013-05-05_21.14.09-server.txt

crash-2013-10-27_19.45.49-server.txt

crash-report.txt

Comments

migrated 2012-10-29T16:10:09Z

[media][media][media][media][media][media][media]

migrated 2012-11-07T21:21:24Z

I can confirm that this still happens on 1.4.3pre.

kumasasa 2012-11-13T22:26:41Z

Confirmed with 1.4.4

kumasasa 2012-12-01T08:31:37Z

Note:

Description: Exception generating new chunk
java.lang.NullPointerException
	at aap.d(SourceFile:98)

Description: Exception in server tick loop
java.lang.ArrayIndexOutOfBoundsException: -1
	at zr.b(SourceFile:42)

migrated 2012-12-05T13:09:02Z

Still happens in 1.4.5 but NullPointerException

kumasasa 2012-12-06T20:18:51Z

Reproduced with 1.4.5, updated crash report attached.

kumasasa 2012-12-06T20:20:32Z

Note:

Description: Exception in server tick loop
java.lang.ArrayIndexOutOfBoundsException: -1
	at aaj.b(SourceFile:42)
	at aaj.a(SourceFile:27)

migrated 2012-12-08T15:30:01Z

I found an idea to fix this : The validation of superflat preset must be more strict so the biome id must be beetween 0 and 22

kumasasa 2012-12-25T16:56:32Z

Confirmed for 1.4.6

kumasasa 2013-08-13T17:49:02Z

1.6.2

Client> 2013-08-13 19:47:28 [SERVER] [WARNING] Unable to find spawn biome
Client> u: Exception generating new chunk
Client> 	at abv.<init>(SourceFile:167)
Client> 	at jr.<init>(SourceFile:59)
Client> 	at bkw.a(SourceFile:77)
Client> 	at bkw.d(SourceFile:106)
Client> 	at net.minecraft.server.MinecraftServer.run(SourceFile:314)
Client> 	at hh.run(SourceFile:582)
Client> Caused by: java.lang.NullPointerException
Client> 	at aen.d(SourceFile:95)
Client> 	at jq.c(SourceFile:84)
Client> 	at jq.d(SourceFile:116)
Client> 	at abv.e(SourceFile:289)
Client> 	at abv.a(SourceFile:213)
Client> 	at abv.c(SourceFile:237)
Client> 	at abv.b(SourceFile:197)
Client> 	at aeh.a(SourceFile:61)
Client> 	at jr.b(SourceFile:563)
Client> 	at jr.a(SourceFile:532)
Client> 	at abv.<init>(SourceFile:158)
Client> 	... 5 more
Client> 2013-08-13 19:47:28 [SERVER] [SEVERE] Encountered an unexpected exception u
Client> u: Exception generating new chunk
Client> 	at abv.<init>(SourceFile:167)
Client> 	at jr.<init>(SourceFile:59)
Client> 	at bkw.a(SourceFile:77)
Client> 	at bkw.d(SourceFile:106)
Client> 	at net.minecraft.server.MinecraftServer.run(SourceFile:314)
Client> 	at hh.run(SourceFile:582)
Client> Caused by: java.lang.NullPointerException
Client> 	at aen.d(SourceFile:95)
Client> 	at jq.c(SourceFile:84)
Client> 	at jq.d(SourceFile:116)
Client> 	at abv.e(SourceFile:289)
Client> 	at abv.a(SourceFile:213)
Client> 	at abv.c(SourceFile:237)
Client> 	at abv.b(SourceFile:197)
Client> 	at aeh.a(SourceFile:61)
Client> 	at jr.b(SourceFile:563)
Client> 	at jr.a(SourceFile:532)
Client> 	at abv.<init>(SourceFile:158)
Client> 	... 5 more
Client> 2013-08-13 19:47:28 [SERVER] [SEVERE] This crash report has been saved to: C:\Users\AppData\Roaming\.minecraft\crash-reports\crash-2013-08-13_19.47.28-server.txt
Client> 2013-08-13 19:47:28 [SERVER] [INFO] Stopping server
Client> 2013-08-13 19:47:28 [SERVER] [INFO] Saving players
Client> 2013-08-13 19:47:28 [SERVER] [INFO] Saving worlds
Client> java.lang.NullPointerException
Client> 	at net.minecraft.server.MinecraftServer.m(SourceFile:286)
Client> 	at bkw.m(SourceFile:234)
Client> 	at net.minecraft.server.MinecraftServer.run(SourceFile:372)
Client> 	at hh.run(SourceFile:582)

migrated 2013-10-27T18:53:00Z

1.7.2:

Description: Exception generating new chunk

java.lang.NullPointerException: Exception generating new chunk
	at apg.d(SourceFile:102)
	at mi.c(SourceFile:78)
	at mi.d(SourceFile:108)
	at afn.e(SourceFile:311)
	at afn.a(SourceFile:249)
	at afn.c(SourceFile:273)
	at afn.b(SourceFile:234)
	at apa.a(SourceFile:62)
	at mj.b(SourceFile:565)
	at mj.a(SourceFile:534)
	at afn.<init>(SourceFile:193)
	at mj.<init>(SourceFile:69)
	at bsk.a(SourceFile:70)
	at bsk.e(SourceFile:99)
	at net.minecraft.server.MinecraftServer.run(SourceFile:328)
	at ky.run(SourceFile:617)

migrated 2014-04-21T18:45:14Z

Fixed in 14w11b:

[20:43:50 INFO]: Client> [20:43:50] [Server thread/INFO]: Starting integrated minecraft server version 14w11b
[20:43:50 INFO]: Client> [20:43:50] [Server thread/INFO]: Generating keypair
[20:43:50 INFO]: Client> [20:43:50] [Server thread/INFO]: Converting map!
[20:43:50 INFO]: Client> [20:43:50] [Server thread/INFO]: Scanning folders...
[20:43:50 INFO]: Client> [20:43:50] [Server thread/INFO]: Total conversion count is 0
[20:43:50 INFO]: Client> [20:43:50] [Server thread/WARN]: Biome ID is out of bounds: -1, defaulting to 0 (Ocean)

migrated 2014-08-08T20:09:44Z

Do we know what causes this? Why are Biome IDs going out of bounds? I just got the out of bounds, defaulting to 0 message on 14w32d. It served the message over and over again. Unfortunately, I deleted the world before I saw the messages, so I don't know what seed it was (it was a default generated world).

kumasasa 2014-08-08T21:59:44Z

Got this too in 14w32b, see MC-65986

migrated 2020-11-18T00:36:09Z

Relates to MC-198725