[1.12.2] Why getting null?

[American2050]

I have an event that monitors living events so I can do some stuff with pigs.

 

Problem is that whenever I try to launch a world on 1.12.2 I get this error. (This worked on 1.11.2)

 

[18:48:36] [main/ERROR] [FML]: Exception caught during firing event net.minecraftforge.event.entity.player.ItemTooltipEvent@618b0680:
java.lang.NullPointerException: null
	at com.mramericanmike.cropdusting.events.EntityTickEvent.onEntityTick(EntityTickEvent.java:24) ~[EntityTickEvent.class:?]
	at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_17_EntityTickEvent_onEntityTick_LivingEvent.invoke(.dynamic) ~[?:?]
	at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:90) ~[ASMEventHandler.class:?]
	at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:179) ~[EventBus.class:?]
	at net.minecraftforge.event.ForgeEventFactory.onItemTooltip(ForgeEventFactory.java:284) ~[ForgeEventFactory.class:?]
	at net.minecraft.item.ItemStack.getTooltip(ItemStack.java:993) ~[ItemStack.class:?]
	at net.minecraft.client.Minecraft.lambda$populateSearchTreeManager$1(Minecraft.java:625) ~[Minecraft.class:?]
	at net.minecraft.client.util.SearchTree.index(SearchTree.java:93) ~[SearchTree.class:?]
	at net.minecraft.client.util.SearchTree.add(SearchTree.java:78) ~[SearchTree.class:?]
	at java.lang.Iterable.forEach(Unknown Source) [?:1.8.0_151]
	at net.minecraft.client.Minecraft.populateSearchTreeManager(Minecraft.java:639) [Minecraft.class:?]
	at net.minecraftforge.fml.client.FMLClientHandler.reloadSearchTrees(FMLClientHandler.java:1119) [FMLClientHandler.class:?]
	at net.minecraftforge.fml.common.FMLCommonHandler.reloadSearchTrees(FMLCommonHandler.java:771) [FMLCommonHandler.class:?]
	at net.minecraftforge.common.ForgeModContainer.mappingChanged(ForgeModContainer.java:554) [ForgeModContainer.class:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_151]
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_151]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_151]
	at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_151]
	at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91) [guava-21.0.jar:?]
	at com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Subscriber.java:150) [guava-21.0.jar:?]
	at com.google.common.eventbus.Subscriber$1.run(Subscriber.java:76) [guava-21.0.jar:?]
	at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:399) [guava-21.0.jar:?]
	at com.google.common.eventbus.Subscriber.dispatchEvent(Subscriber.java:71) [guava-21.0.jar:?]
	at com.google.common.eventbus.Dispatcher$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116) [guava-21.0.jar:?]
	at com.google.common.eventbus.EventBus.post(EventBus.java:217) [guava-21.0.jar:?]
	at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:253) [LoadController.class:?]
	at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:231) [LoadController.class:?]
	at net.minecraftforge.fml.common.Loader.fireRemapEvent(Loader.java:900) [Loader.class:?]
	at net.minecraftforge.registries.GameData.freezeData(GameData.java:235) [GameData.class:?]
	at net.minecraftforge.fml.common.Loader.initializeMods(Loader.java:728) [Loader.class:?]
	at net.minecraftforge.fml.client.FMLClientHandler.finishMinecraftLoading(FMLClientHandler.java:352) [FMLClientHandler.class:?]
	at net.minecraft.client.Minecraft.init(Minecraft.java:581) [Minecraft.class:?]
	at net.minecraft.client.Minecraft.run(Minecraft.java:421) [Minecraft.class:?]
	at net.minecraft.client.main.Main.main(Main.java:118) [Main.class:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_151]
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_151]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_151]
	at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_151]
	at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.12.jar:?]
	at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.12.jar:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_151]
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_151]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_151]
	at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_151]
	at net.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:97) [start/:?]
	at GradleStart.main(GradleStart.java:26) [start/:?]
[18:48:36] [main/ERROR] [FML]: Index: 1 Listeners:
[18:48:36] [main/ERROR] [FML]: 0: NORMAL
[18:48:36] [main/ERROR] [FML]: 1: ASM: com.mramericanmike.cropdusting.events.EntityTickEvent@4882c984 onEntityTick(Lnet/minecraftforge/event/entity/living/LivingEvent;)V
[18:48:36] [main/INFO] [FML]: Forge Mod Loader has successfully loaded 5 mods
[18:48:36] [main/WARN]: Skipping bad option: lastServer:
[18:48:36] [main/INFO]: Narrator library for x64 successfully loaded

 

The line is:

 

		
	 @SubscribeEvent
	 public void onEntityTick(LivingEvent event) {
		 
		 EntityLivingBase theEntity = event.getEntityLiving();
		 World theWorld = theEntity.getEntityWorld();

 

Right there on World theWorld = theEntity.getEntityWorld(); is the error. Not sure why it would be null

[Draco18s]

1 minute ago, American2050 said:

Exception caught during [...] ItemTooltipEvent

What on earth is going on here.

[American2050]

1 hour ago, diesieben07 said:

ItemTooltipEvent extends PlayerEvent extends LivingEvent.

 

@American2050 Don't just subscribe to random parent event classes. Subscribe to the events you want.

LivingEvent includes a lot of things, most of which you do not expect, one example can be seen above.

 

As to why you are receiving an error: Minecraft::populateSearchTreeManager calls ItemStack::getTooltip without a player (because there is no player yet). If you handle ItemTooltipEvent (directly or indirectly) you must handle a null player properly.

Thanks. I changed it to LivingUpdateEvent Working perfectly now.