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Spawning Multiple Biomes in Custom Dimension (NullPointer Error)

headchopperz

By headchopperz
in Modder Support

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headchopperz Tree Puncher

headchopperz

Posted
Posted

Hi, ive spent the past two days trying to get multiple biomes to work on a custom dimension, and i think im pretty much there but i keep getting these NullPointer Errors when the code runs "this.provider.worldChunkMgr.cleanupCache();", in Wordserver.java.

 

Sorry if its a bit much to read, but i really need help wit this, im stumped.

 

Thanks.

 

INIT Code:

 

public static int DimID = 2;

...

DimensionManager.registerProviderType(DimID, Pokemob_WorldProvider.class, false);

DimensionManager.registerDimension(DimID, DimID);

 

Here are my files:

 

Pokemob_ChunkProvider.java

 

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Pokemob_WorldChunkManager

 

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Pokemob_WorldProvider

 

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Pokemob_GenLayer.java

 

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Pokemob_GenLayerBiome.java

 

 

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Pokemob_GenLayerIsland.java

 

 

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Pokemob_GenLayerVoronoiZoom.java

 

 

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Pokemob_GenLayerZoom.java

 

 

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Pokemob_BiomeGenBase.java

 

 

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Pokemob_BiomeDecorator.java

 

 

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Pokemob_BiomeCache.java

 

 

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Pokemob_BiomeCacheBlock.java

 

 

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Pokemob_ExtremeHills.java

 

 

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Pokemob_Hills.java

 

 

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headchopperz Tree Puncher

headchopperz

Posted
  • Author
Posted

Sorry for delay, i had a long sleep ^^.

 

I am on 1.5.2 using version 7.8.0.716 of forge (end of last month i think)

 

The error is when im creating a new world, i get to the main menu fine, the console log looks like this:

 

 

  Reveal hidden contents

 

 

 

The code its referencing too is:

 

MinecraftServer.java, line 639:

[spoiler]                try
                {
                    worldserver.tick();
                }
                catch (Throwable throwable)
                {
                    crashreport = CrashReport.makeCrashReport(throwable, "Exception ticking world");
                    worldserver.addWorldInfoToCrashReport(crashreport);
                    throw new ReportedException(crashreport);
                }[/spoiler]

 

If i comment out the try - catch to see more information about the error, i get this message instead:

 

 

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Which points to this code: this.provider.worldChunkMgr.cleanupCache();

in WorldServer.java

 

Using the debugger i can tell you that.

 

this.provider = (mods.pokemob.common.World.Pokemob_WorldProvider) mods.pokemob.common.World.Pokemob_WorldProvider@ 7f0e8369

 

and this.provider.worldChunkMgr = (mods.pokemob.common.World.Pokemob_WorldChunkManager) mods.pokemob.common.World.Pokemob_WorldChunkManager@7a941409

 

If you want to know more information from the debugger just tell me

 

 

CowedOffACliff Tree Puncher

CowedOffACliff

Posted
Posted

this.provider.worldChunkMgr.cleanUpCache() calls this.biomeCache.cleanupCache() which is your BiomeCache subclass. Make sure the this.biomeCache is actually being initialized correctly, and then go look at the cleanupCache() method in the BiomeCache base class since I don't see an implementation of it in your file. Assuming the crash is actually being caused in this chain somewhere continue to trace from BiomeCache.cleanupCache().

I accidentally the everything then NullPointerException.

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