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Help with Custom Registry Objects

Posted February 10, 20214 yr

I created a Custom DeferredRegister Object and it worked fine. However, it crashes when I take that object as a constructor argument when creating an Item Registry Object. I think it's because the Custom Registry Object is generated later than the Item Registry Object is generated. Is there any way to solve this?

Mod main class :

@Mod("expansionmod")
public class ExpansionMod {
	public ExpansionMod() {
		ExpansionModMagics.MAGICS.makeRegistry("magic_registry", () -> new RegistryBuilder<>());
		ExpansionModMagics.MAGICS.register(FMLJavaModLoadingContext.get().getModEventBus());
		ExpansionModItems.ITEMS.register(FMLJavaModLoadingContext.get().getModEventBus());
	}
}

Mod items class :

public class ExpansionModItems {
	public static final DeferredRegister<Item> ITEMS = DeferredRegister.create(ForgeRegistries.ITEMS, "expansionmod");

	public static final RegistryObject<Item> SPELL = ITEMS.register("spel", () -> new SpellItem(new Item.Properties().group(ExpansionModItemGroups.EXPANSIONMOD_MAGIC), ExpansionModMagics.FIREBALL.get()));
}

Mod custom registry(Magic) class :

public class ExpansionModMagics {
	public static final DeferredRegister<Magic> MAGICS = DeferredRegister.create(Magic.class, ExpansionMod.MODID);

	public static final RegistryObject<Magic> FIREBALL = MAGICS.register("fireball", () -> new FireBallMagic(54));
}

Spell Item class :

public class SpellItem extends MagicalItem {
	public SpellItem(Properties properties, Magic magic) {
		super(properties, magic);
	}
}

Error log :

~
Description: Mod loading error has occurred

java.lang.Exception: Mod Loading has failed
	at net.minecraftforge.fml.CrashReportExtender.dumpModLoadingCrashReport(CrashReportExtender.java:85) ~[forge-1.16.5-36.0.7_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at net.minecraftforge.fml.client.ClientModLoader.completeModLoading(ClientModLoader.java:188) ~[forge-1.16.5-36.0.7_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading,pl:runtimedistcleaner:A}
	at net.minecraft.client.Minecraft.lambda$null$1(Minecraft.java:513) ~[forge-1.16.5-36.0.7_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
	at net.minecraft.util.Util.acceptOrElse(Util.java:323) ~[forge-1.16.5-36.0.7_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at net.minecraft.client.Minecraft.lambda$new$2(Minecraft.java:509) ~[forge-1.16.5-36.0.7_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
	at net.minecraft.client.gui.ResourceLoadProgressGui.render(ResourceLoadProgressGui.java:113) ~[forge-1.16.5-36.0.7_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading,pl:runtimedistcleaner:A}
	at net.minecraft.client.renderer.GameRenderer.updateCameraAndRender(GameRenderer.java:492) ~[forge-1.16.5-36.0.7_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
	at net.minecraft.client.Minecraft.runGameLoop(Minecraft.java:1002) ~[forge-1.16.5-36.0.7_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
	at net.minecraft.client.Minecraft.run(Minecraft.java:612) ~[forge-1.16.5-36.0.7_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
	at net.minecraft.client.main.Main.main(Main.java:184) ~[forge-1.16.5-36.0.7_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading,pl:runtimedistcleaner:A}
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_282] {}
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_282] {}
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_282] {}
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_282] {}
	at net.minecraftforge.userdev.FMLUserdevClientLaunchProvider.lambda$launchService$0(FMLUserdevClientLaunchProvider.java:52) ~[forge-1.16.5-36.0.7_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {}
	at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37) [modlauncher-8.0.9.jar:?] {}
	at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54) [modlauncher-8.0.9.jar:?] {}
	at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72) [modlauncher-8.0.9.jar:?] {}
	at cpw.mods.modlauncher.Launcher.run(Launcher.java:82) [modlauncher-8.0.9.jar:?] {}
	at cpw.mods.modlauncher.Launcher.main(Launcher.java:66) [modlauncher-8.0.9.jar:?] {}
	at net.minecraftforge.userdev.LaunchTesting.main(LaunchTesting.java:105) [forge-1.16.5-36.0.7_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {}


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Thread: Render thread
Stacktrace:
	at java.util.Objects.requireNonNull(Objects.java:290) ~[?:1.8.0_282] {}
-- MOD expansionmod --
Details:
	Mod File: main
	Failure message: Expansion Mod (expansionmod) encountered an error during the load_registries event phase
		java.lang.NullPointerException: Registry Object not present: expansionmod:fireball
	Mod Version: NONE
	Mod Issue URL: NOT PROVIDED
	Exception message: java.lang.NullPointerException: Registry Object not present: expansionmod:fireball
Stacktrace:
	at java.util.Objects.requireNonNull(Objects.java:290) ~[?:1.8.0_282] {}
	at net.minecraftforge.fml.RegistryObject.get(RegistryObject.java:120) ~[forge-1.16.5-36.0.7_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at io.github.zemelua.expansionmod.item.ExpansionModItems.lambda$static$23(ExpansionModItems.java:61) ~[main/:?] {re:classloading}
	at net.minecraftforge.registries.DeferredRegister.lambda$register$0(DeferredRegister.java:124) ~[forge-1.16.5-36.0.7_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at net.minecraftforge.registries.DeferredRegister.addEntries(DeferredRegister.java:200) ~[forge-1.16.5-36.0.7_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at net.minecraftforge.registries.DeferredRegister.access$000(DeferredRegister.java:61) ~[forge-1.16.5-36.0.7_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at net.minecraftforge.registries.DeferredRegister$EventDispatcher.handleEvent(DeferredRegister.java:172) ~[forge-1.16.5-36.0.7_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at net.minecraftforge.eventbus.ASMEventHandler_2_EventDispatcher_handleEvent_Register.invoke(.dynamic) ~[?:?] {}
	at net.minecraftforge.eventbus.ASMEventHandler.invoke(ASMEventHandler.java:85) ~[eventbus-4.0.0.jar:?] {}
	at net.minecraftforge.eventbus.EventBus.post(EventBus.java:302) ~[eventbus-4.0.0.jar:?] {}
	at net.minecraftforge.eventbus.EventBus.post(EventBus.java:283) ~[eventbus-4.0.0.jar:?] {}
	at net.minecraftforge.fml.javafmlmod.FMLModContainer.acceptEvent(FMLModContainer.java:120) ~[forge-1.16.5-36.0.7_mapped_snapshot_20201028-1.16.3-recomp.jar:36.0] {re:classloading}
	at net.minecraftforge.fml.ModContainer.lambda$buildTransitionHandler$4(ModContainer.java:121) ~[forge-1.16.5-36.0.7_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1640) ~[?:1.8.0_282] {}
	at net.minecraftforge.fml.ModWorkManager$SyncExecutor.driveOne(ModWorkManager.java:56) ~[forge-1.16.5-36.0.7_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at net.minecraftforge.fml.ModWorkManager$DrivenExecutor.drive(ModWorkManager.java:40) ~[forge-1.16.5-36.0.7_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at net.minecraftforge.fml.ModLoader.waitForTransition(ModLoader.java:243) ~[forge-1.16.5-36.0.7_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at net.minecraftforge.fml.ModLoader.dispatchAndHandleError(ModLoader.java:230) ~[forge-1.16.5-36.0.7_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at net.minecraftforge.fml.ModLoader.gatherAndInitializeMods(ModLoader.java:196) ~[forge-1.16.5-36.0.7_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at net.minecraftforge.fml.client.ClientModLoader.lambda$begin$1(ClientModLoader.java:103) ~[forge-1.16.5-36.0.7_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading,pl:runtimedistcleaner:A}
	at net.minecraftforge.fml.client.ClientModLoader.lambda$createRunnableWithCatch$4(ClientModLoader.java:123) ~[forge-1.16.5-36.0.7_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading,pl:runtimedistcleaner:A}
	at net.minecraftforge.fml.client.ClientModLoader.begin(ClientModLoader.java:103) ~[forge-1.16.5-36.0.7_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading,pl:runtimedistcleaner:A}
	at net.minecraft.client.Minecraft.<init>(Minecraft.java:442) ~[forge-1.16.5-36.0.7_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
	at net.minecraft.client.main.Main.main(Main.java:149) ~[forge-1.16.5-36.0.7_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading,pl:runtimedistcleaner:A}
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_282] {}
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_282] {}
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_282] {}
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_282] {}
	at net.minecraftforge.userdev.FMLUserdevClientLaunchProvider.lambda$launchService$0(FMLUserdevClientLaunchProvider.java:52) ~[forge-1.16.5-36.0.7_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {}
	at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37) [modlauncher-8.0.9.jar:?] {}
	at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54) [modlauncher-8.0.9.jar:?] {}
	at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72) [modlauncher-8.0.9.jar:?] {}
	at cpw.mods.modlauncher.Launcher.run(Launcher.java:82) [modlauncher-8.0.9.jar:?] {}
	at cpw.mods.modlauncher.Launcher.main(Launcher.java:66) [modlauncher-8.0.9.jar:?] {}
	at net.minecraftforge.userdev.LaunchTesting.main(LaunchTesting.java:105) [forge-1.16.5-36.0.7_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {}
~

Quote

February 10, 20214 yr

21 minutes ago, Zemelua said:

public static final RegistryObject<Item> SPELL = ITEMS.register("spel", () -> new SpellItem(new Item.Properties().group(ExpansionModItemGroups.EXPANSIONMOD_MAGIC), ExpansionModMagics.FIREBALL.get()));

You need to hold a supplied instance of the registry object as items will always be registered first. Luckily, RegistryObjects are supplied instances of registry objects.

Quote

February 11, 20214 yr

Author

sorry, I'm not sure. I think it means that the registry of the item is done before the registry of magic, but where and what should I do?

Quote

February 12, 20214 yr

Author

I solved it by giving SpellItem a RegistryObject <Magic> instead of the Magic class type. Thank you!

Quote

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Help with Custom Registry Objects

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