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[1.9.4] [SOLVED] Block not registering. Mentions hash code?


swordkorn

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Hey guys. I'm currently working on an update of my mod to 1.9.4 and I'm trying to optimise my code a little. However; my registry fails and I get this crash log:

 

[13:44:03] [Client thread/ERROR] [FML]: Caught exception from mysticalcrops
java.lang.NullPointerException
at com.mysticalcrops.blocks.MysticalCropBlock.hashCode(MysticalCropBlock.java:191) ~[bin/:?]
at com.google.common.collect.HashBiMap.hash(HashBiMap.java:173) ~[guava-17.0.jar:?]
at com.google.common.collect.HashBiMap.access$300(HashBiMap.java:52) ~[guava-17.0.jar:?]
at com.google.common.collect.HashBiMap$Inverse.get(HashBiMap.java:508) ~[guava-17.0.jar:?]
at net.minecraft.util.registry.RegistryNamespaced.getNameForObject(RegistryNamespaced.java:44) ~[forgeSrc-1.9.4-12.17.0.1960.jar:?]
at net.minecraft.util.registry.RegistryNamespacedDefaultedByKey.getNameForObjectBypass(RegistryNamespacedDefaultedByKey.java:84) ~[forgeSrc-1.9.4-12.17.0.1960.jar:?]
at net.minecraftforge.fml.common.registry.FMLControlledNamespacedRegistry.getNameForObject(FMLControlledNamespacedRegistry.java:777) ~[forgeSrc-1.9.4-12.17.0.1960.jar:?]
at net.minecraftforge.fml.common.registry.FMLControlledNamespacedRegistry.getNameForObject(FMLControlledNamespacedRegistry.java:35) ~[forgeSrc-1.9.4-12.17.0.1960.jar:?]
at net.minecraft.block.state.BlockStateContainer.toString(BlockStateContainer.java:157) ~[forgeSrc-1.9.4-12.17.0.1960.jar:?]

 

Any help would be appreciated!

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Each Minecraft registry is backed by a

HashBiMap

, which uses

Object#hashCode

to hash its keys and values. Your override of this in

MysticalCropBlock

is throwing a

NullPointerException

.

 

To help you more, we'd need to see your code.

 

Why are you overriding this anyway? I can't think of any reason for two instances of

Block

to be considered the same value.

Please don't PM me to ask for help. Asking your question in a public thread preserves it for people who are having the same problem in the future.

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Hi Choonster and thank you for the reply.

 

This is where I create the HashMap I believe:

public class CropItems {
    public static Item[] MCSeeds;

    public static HashMap<MysticalCropBlock, Item> seedsMap = new HashMap<MysticalCropBlock, Item>();
    public static HashMap<MysticalCropBlock, Item> havestedItemMap = new HashMap<MysticalCropBlock, Item>();

And this is where I call on it:

    @Override
    public int hashCode() {
        return regName.hashCode();
    }

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That's not the issue here. The issue is in the override of the

Object#hashCode

method in

MysticalCropBlock

.

Please don't PM me to ask for help. Asking your question in a public thread preserves it for people who are having the same problem in the future.

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