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Awesome_Spider

[1.11] NullPointer on trying to get a list of dimensions.

By Awesome_Spider, in Modder Support

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Awesome_Spider    64

Awesome_Spider
Posted

I am trying to make my mod create configurations for every dimension that is registered. However, I'm getting a null pointer exception and have tried many times in vain to fix it. Here is the code:

  

public static void loadAll() {
        //Dimensions
        Integer[] ids = DimensionManager.getStaticDimensionIDs();

        for (int id : ids) {
            WorldProvider dimension = DimensionManager.getProvider(id); //NullPointer

            String modId = ModIdentification.idFromObject(dimension);

            File file = new File(EnviroMineRevived.configDir, modId.toLowerCase() + "\\dimension.json");

            DimensionProperties.base.load(file);
        }
  ...
    }

 

I then call this method in my post-init method. It however throws a null pointer which leads me to believe that none of the dimensions are registered by then. Where should I be calling this?

 

If you need more code just ask. Following is the error:

 

Spoiler 

---- Minecraft Crash Report ----
// Surprise! Haha. Well, this is awkward.

Time: 5/4/17 6:16 PM
Description: There was a severe problem during mod loading that has caused the game to fail

net.minecraftforge.fml.common.LoaderExceptionModCrash: Caught exception from EnviroMine Revived (enviromine_revived)
Caused by: java.lang.NullPointerException
	at net.minecraftforge.common.DimensionManager.getProvider(DimensionManager.java:139)
	at wiseowl5.EnviroMineRevived.Properties.PropertyManager.loadAll(PropertyManager.java:32)
	at wiseowl5.EnviroMineRevived.Main.EnviroMineRevived.postInit(EnviroMineRevived.java:99)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at net.minecraftforge.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:621)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)
	at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
	at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
	at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
	at com.google.common.eventbus.EventBus.post(EventBus.java:275)
	at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:243)
	at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:221)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)
	at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
	at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
	at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
	at com.google.common.eventbus.EventBus.post(EventBus.java:275)
	at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:145)
	at net.minecraftforge.fml.common.Loader.initializeMods(Loader.java:801)
	at net.minecraftforge.fml.client.FMLClientHandler.finishMinecraftLoading(FMLClientHandler.java:331)
	at net.minecraft.client.Minecraft.init(Minecraft.java:560)
	at net.minecraft.client.Minecraft.run(Minecraft.java:385)
	at net.minecraft.client.main.Main.main(Main.java:118)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
	at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at net.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:97)
	at GradleStart.main(GradleStart.java:26)


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

-- System Details --
Details:
	Minecraft Version: 1.11
	Operating System: Windows 10 (amd64) version 10.0
	Java Version: 1.8.0_60, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 114418296 bytes (109 MB) / 747634688 bytes (713 MB) up to 1415053312 bytes (1349 MB)
	JVM Flags: 0 total; 
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	FML: MCP 9.35 Powered by Forge 13.19.1.2189 4 mods loaded, 4 mods active
	States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
	UCHIJ	mcp{9.19} [Minecraft Coder Pack] (minecraft.jar) 
	UCHIJ	FML{8.0.99.99} [Forge Mod Loader] (forgeSrc-1.11-13.19.1.2189.jar) 
	UCHIJ	forge{13.19.1.2189} [Minecraft Forge] (forgeSrc-1.11-13.19.1.2189.jar) 
	UCHIE	enviromine_revived{1.11-0.0.0} [EnviroMine Revived] (EnviroMineRevived_main) 
	Loaded coremods (and transformers): 
	GL info: ' Vendor: 'ATI Technologies Inc.' Version: '4.5.13399 Compatibility Profile Context 15.201.1151.1008' Renderer: 'AMD Radeon HD 5450'

 

 

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diesieben07    6621

diesieben07
Posted

You first need to get all DimensionTypes: DimensionType.values(). Then for each one you need to get all it's dimension IDs using DimensionManager.getDimensions(DimensionType).

In one operation: 

int[] dimensions = Stream.of(DimensionType.values()).flatMapToInt(t -> Stream.of(DimensionManager.getDimensions(t))).distinct();

 

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Awesome_Spider    64

Awesome_Spider
Posted

I'm still not having any luck. Any other ideas? There is a null pointer on the same method as last time. :/

Spoiler

The method with the exception: 


public static void loadAll() {
        //Dimensions
        List<Integer> ids = EnviroUtils.getDimensionIds();

        for (int id : ids) {
            WorldProvider dimension = DimensionManager.getProvider(id); //Null pointer

            String modId = ModIdentification.idFromObject(dimension);

            //File file = new File(EM_ConfigHandler.loadedProfile + EM_ConfigHandler.customPath + EnviroUtils.SafeFilename(modID) + ".cfg");
            File file = new File(EnviroMineRevived.configDir, modId.toLowerCase() + "\\dimension.json");

            DimensionProperties.base.load(file);
        }
  ...
}

 

The method I use to get all the ids: 


...
  
public static List<Integer> getDimensionIds() {
        List<Integer> ids = Lists.newArrayList();

        DimensionType[] types = DimensionType.values();

        for (DimensionType type : types) {
            int[] idArray = DimensionManager.getDimensions(type);

            for (int id : idArray) {
                ids.add(id);
            }
        }

        return ids;
    }

...

 

The crash report: 


---- Minecraft Crash Report ----
// Would you like a cupcake?

Time: 5/4/17 7:32 PM
Description: There was a severe problem during mod loading that has caused the game to fail

net.minecraftforge.fml.common.LoaderExceptionModCrash: Caught exception from EnviroMine Revived (enviromine_revived)
Caused by: java.lang.NullPointerException
	at net.minecraftforge.common.DimensionManager.getProvider(DimensionManager.java:139)
	at wiseowl5.EnviroMineRevived.Properties.PropertyManager.loadAll(PropertyManager.java:27)
	at wiseowl5.EnviroMineRevived.Main.EnviroMineRevived.postInit(EnviroMineRevived.java:99)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at net.minecraftforge.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:621)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)
	at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
	at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
	at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
	at com.google.common.eventbus.EventBus.post(EventBus.java:275)
	at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:243)
	at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:221)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)
	at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
	at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
	at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
	at com.google.common.eventbus.EventBus.post(EventBus.java:275)
	at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:145)
	at net.minecraftforge.fml.common.Loader.initializeMods(Loader.java:801)
	at net.minecraftforge.fml.client.FMLClientHandler.finishMinecraftLoading(FMLClientHandler.java:331)
	at net.minecraft.client.Minecraft.init(Minecraft.java:560)
	at net.minecraft.client.Minecraft.run(Minecraft.java:385)
	at net.minecraft.client.main.Main.main(Main.java:118)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
	at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at net.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:97)
	at GradleStart.main(GradleStart.java:26)


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

-- System Details --
Details:
	Minecraft Version: 1.11
	Operating System: Windows 10 (amd64) version 10.0
	Java Version: 1.8.0_60, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 424596288 bytes (404 MB) / 757596160 bytes (722 MB) up to 1415053312 bytes (1349 MB)
	JVM Flags: 0 total; 
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	FML: MCP 9.35 Powered by Forge 13.19.1.2189 4 mods loaded, 4 mods active
	States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
	UCHIJ	mcp{9.19} [Minecraft Coder Pack] (minecraft.jar) 
	UCHIJ	FML{8.0.99.99} [Forge Mod Loader] (forgeSrc-1.11-13.19.1.2189.jar) 
	UCHIJ	forge{13.19.1.2189} [Minecraft Forge] (forgeSrc-1.11-13.19.1.2189.jar) 
	UCHIE	enviromine_revived{1.11-0.0.0} [EnviroMine Revived] (EnviroMineRevived_main) 
	Loaded coremods (and transformers): 
	GL info: ' Vendor: 'ATI Technologies Inc.' Version: '4.5.13399 Compatibility Profile Context 15.201.1151.1008' Renderer: 'AMD Radeon HD 5450'

 

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