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

Posted June 18, 20169 yr

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!

Quote

June 18, 20169 yr

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.

Quote

June 18, 20169 yr

Author

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();
    }

Quote

June 18, 20169 yr

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.

Quote

June 18, 20169 yr

Author

I'm trying to create a universal block class that I can call for multiple plant block types.

Previously I had multiple classes and it was a total mess, so I'm trying to optimise it all down into one class.

Quote

June 18, 20169 yr

Author

http://pastebin.com/ExBf80RQ

That's the entirety of my class

EDIT: Are you saying diesieben that I don't need to be overriding that method?

Quote

June 18, 20169 yr

Author

Removed that and got a new problem. But this issue is solved so I'll mark it as so and make a new thread if necessary. Thanks guys!

Quote

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

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