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Error when adding dataWatcher objects from another class

Posted February 19, 201510 yr

I am trying to use another class to hold the code that adds objects to the dataWatcher of an entity, but when I try to call the function in the other class in the entityInit() function in my entity, I get this error:

[20:34:56] [server thread/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: java.lang.reflect.InvocationTargetException

[20:34:56] [server thread/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

[20:34:56] [server thread/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)

[20:34:56] [server thread/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)

[20:34:56] [server thread/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at java.lang.reflect.Constructor.newInstance(Unknown Source)

[20:34:56] [server thread/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at net.minecraft.entity.EntityList.createEntityByID(EntityList.java:221)

[20:34:56] [server thread/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at net.minecraft.item.ItemMonsterPlacer.spawnCreature(ItemMonsterPlacer.java:173)

[20:34:56] [server thread/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at net.minecraft.item.ItemMonsterPlacer.onItemUse(ItemMonsterPlacer.java:79)

[20:34:56] [server thread/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at net.minecraftforge.common.ForgeHooks.onPlaceItemIntoWorld(ForgeHooks.java:507)

[20:34:56] [server thread/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at net.minecraft.item.ItemStack.tryPlaceItemIntoWorld(ItemStack.java:142)

[20:34:56] [server thread/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at net.minecraft.server.management.ItemInWorldManager.activateBlockOrUseItem(ItemInWorldManager.java:422)

[20:34:56] [server thread/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at net.minecraft.network.NetHandlerPlayServer.processPlayerBlockPlacement(NetHandlerPlayServer.java:593)

[20:34:56] [server thread/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at net.minecraft.network.play.client.C08PacketPlayerBlockPlacement.processPacket(C08PacketPlayerBlockPlacement.java:74)

[20:34:56] [server thread/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at net.minecraft.network.NetworkManager.processReceivedPackets(NetworkManager.java:241)

[20:34:56] [server thread/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at net.minecraft.network.NetworkSystem.networkTick(NetworkSystem.java:182)

[20:34:56] [server thread/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:726)

[20:34:56] [server thread/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:614)

[20:34:56] [server thread/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:118)

[20:34:56] [server thread/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:485)

[20:34:56] [server thread/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:752)

[20:34:56] [server thread/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: Caused by: java.lang.NullPointerException

[20:34:56] [server thread/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at ashjack.evolve.entity.EvolvingEntity.entityInit(EvolvingEntity.java:55)

[20:34:56] [server thread/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at net.minecraft.entity.Entity.<init>(Entity.java:220)

[20:34:56] [server thread/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at net.minecraft.entity.EntityLivingBase.<init>(EntityLivingBase.java:155)

[20:34:56] [server thread/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at net.minecraft.entity.EntityLiving.<init>(EntityLiving.java:78)

[20:34:56] [server thread/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at net.minecraft.entity.EntityCreature.<init>(EntityCreature.java:36)

[20:34:56] [server thread/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at net.minecraft.entity.EntityAgeable.<init>(EntityAgeable.java:17)

[20:34:56] [server thread/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at net.minecraft.entity.passive.EntityAnimal.<init>(EntityAnimal.java:34)

[20:34:56] [server thread/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at ashjack.evolve.entity.EntityAnimalMob.<init>(EntityAnimalMob.java:22)

[20:34:56] [server thread/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at ashjack.evolve.entity.EvolvingEntity.<init>(EvolvingEntity.java:38)

[20:34:56] [server thread/INFO] [sTDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: ... 20 more

Here is my code:

MyEntity.java

public DataWatcher dataWatcher = this.dataWatcher;
public List<Gene> entityGenes = new ArrayList<Gene>();
public void entityInit()
    {
	for(int i=0; i<entityGenes.size(); i++) //<---The error point to this line of code
	{
		entityGenes.get(i).entityInit();
	}

	/*this.dataWatcher.addObject(16, Byte.valueOf((byte) - 1));
	this.dataWatcher.addObject(17, Byte.valueOf((byte)0));               <---Adding the objects like this is fine
	this.dataWatcher.addObject(18, Byte.valueOf((byte)0));*/
        super.entityInit();
    }

GeneExplosive.java

public class GeneExplosive extends Gene
{
        public void entityInit()
{
                owner.dataWatcher.addObject(16, Byte.valueOf((byte) - 1));
                owner.dataWatcher.addObject(17, Byte.valueOf((byte)0));
                owner.dataWatcher.addObject(18, Byte.valueOf((byte)0));
	super.entityInit();
}
}

Gene.java

public abstract class Gene 
{
       public void entityInit()
{

}
}

Quote

February 19, 201510 yr

5 minutes tracing with your debugger would show you this very clearly.. do you know how to use it?

If you don't, I recommend you spend a couple of hours learning how to use it, it's awesome and you'll wonder how on earth you ever managed without it

http://www.vogella.com/tutorials/EclipseDebugging/article.html

-TGG

Quote

February 20, 201510 yr

Side note, don't use Byte.valueOf.

Maker of the Craft++ mod.

Quote

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The settings.gradle file has been fixed. But, the build.gradle has an error now.
Error:
* Where:
Build file 'C:\Users\csonn\OneDrive\Desktop\fusionlucky\build.gradle' line: 3
* What went wrong:
Plugin [id: 'net.minecraftforge.gradle', version: '6.1.+'] was not found in any of the following sources:
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Searched in the following repositories:
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Maven Repository for Minecraft Forge. <br/>You should be on:)
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Build.Gradle File:
plugins { id 'java' id 'net.minecraftforge.gradle' version '6.1.+' } group = 'io.github.csonnic03.fusionlucky' version = '1.0.0' archivesBaseName = 'fusionlucky' java { toolchain { languageVersion = JavaLanguageVersion.of(17) } } repositories { mavenCentral() maven { name "forgeMaven" url "https://maven.minecraftforge.net/<repository>" } } dependencies { minecraft 'net.minecraftforge:forge:1.20.1-47.1.0' } minecraft { mappings channel: 'official', version: '1.20.1' runs { client { workingDirectory project.file('run') } server { workingDirectory project.file('run') } } } tasks.withType(JavaCompile) { options.encoding = 'UTF-8' } jar { manifest { attributes( "Specification-Title": "Fusion Lucky Block", "Specification-Vendor": "example", "Implementation-Title": project.name, "Implementation-Version": project.version, "Implementation-Vendor": "example", "ModLauncher-TargetFMLVersion": "[47,)" ) } }

By Fairygamer03 · 1 hour ago1 hr
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no change, thank you for the patience ^^
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By chemba21 · 7 hours ago7 hr
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Personally, I just use event.SetCanceled(true) in my handler and it blocks the scroll well.
Even if the method does not appear clear, it is available via the Cancellable interface.
It works at home without additional hacks.

By briey · 9 hours ago9 hr
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Also make a test without jeresources and jei

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Try this one:
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By TileEntity · 20 hours ago20 hr

chemba21

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Error when adding dataWatcher objects from another class

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