Crash when meddling with capabilities

[cowlegs]

Back again talking about capabilities 

I created a value attached to the player called 'Nentype' which is equal to 0 initially, the plan is to make it so that when the player loads into the game an event in run which changes 'Nentype' to a random number between 1 and 5 if it's currently set to 0, which will then save upon death/leaving the game, meaning it can't be changed and is set in place.

For some reason, whenever I run the client it loads up fine, but then upon initialization of my world it crashes at the last second and closes down!

 

My EventHandler;

Spoiler

package net.minecraft.util.text;

public class TextComponentString extends TextComponentBase
{
    private final String text;

    public TextComponentString(String msg)
    {
        this.text = msg;
    }

    /**
     * Gets the text value of this component. This is used to access the {@link #text} property, and only should be used
     * when dealing specifically with instances of {@link TextComponentString} - for other purposes, use {@link
     * #getUnformattedComponentText()}.
     */
    public String getText()
    {
        return this.text;
    }

    /**
     * Gets the raw content of this component (but not its sibling components), without any formatting codes. For
     * example, this is the raw text in a {@link TextComponentString}, but it's the translated text for a {@link
     * TextComponentTranslation} and it's the score value for a {@link TextComponentScore}.
     */
    public String getUnformattedComponentText()
    {
        return this.text;
    }

    /**
     * Creates a copy of this component.  Almost a deep copy, except the style is shallow-copied.
     */
    public TextComponentString createCopy()
    {
        TextComponentString textcomponentstring = new TextComponentString(this.text);
        textcomponentstring.setStyle(this.getStyle().createShallowCopy());

        for (ITextComponent itextcomponent : this.getSiblings())
        {
            textcomponentstring.appendSibling(itextcomponent.createCopy());
        }

        return textcomponentstring;
    }

    public boolean equals(Object p_equals_1_)
    {
        if (this == p_equals_1_)
        {
            return true;
        }
        else if (!(p_equals_1_ instanceof TextComponentString))
        {
            return false;
        }
        else
        {
            TextComponentString textcomponentstring = (TextComponentString)p_equals_1_;
            return this.text.equals(textcomponentstring.getText()) && super.equals(p_equals_1_);
        }
    }

    public String toString()
    {
        return "TextComponent{text='" + this.text + '\'' + ", siblings=" + this.siblings + ", style=" + this.getStyle() + '}';
    }
}

 

I've rooted the cause down to being this section, though I'm not sure why it's causing issues... I thought that maybe it's because it's some kind of looping issue causing the crash, but who knows.

Spoiler

 INentype nentype = player.getCapability(NentypeProvider.NEN_TYPE, null);

 if (nentype.getNentype() == 0.0F) {
     String messagetype = String.format("You have no nen type?!?!?!."); player.sendMessage(new TextComponentString(messagetype));
     player.sendMessage(new TextComponentString(messagetype));

     return;
 }

 

 

Crash Log:

Spoiler

---- Minecraft Crash Report ----
// Oh - I know what I did wrong!

Time: 3/25/18 8:40 PM
Description: Ticking memory connection

java.lang.NullPointerException: Ticking memory connection
    at com.Cowlegs.HXHMod.util.handlers.hxhEventHandler.onPlayerLogsIn(hxhEventHandler.java:39)
    at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_14_hxhEventHandler_onPlayerLogsIn_PlayerLoggedInEvent.invoke(.dynamic)
    at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:90)
    at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:179)
    at net.minecraftforge.fml.common.FMLCommonHandler.firePlayerLoggedIn(FMLCommonHandler.java:574)
    at net.minecraft.server.management.PlayerList.initializeConnectionToPlayer(PlayerList.java:228)
    at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher.completeServerSideConnection(NetworkDispatcher.java:259)
    at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher.access$100(NetworkDispatcher.java:72)
    at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher$1.update(NetworkDispatcher.java:208)
    at net.minecraft.network.NetworkManager.processReceivedPackets(NetworkManager.java:307)
    at net.minecraft.network.NetworkSystem.networkTick(NetworkSystem.java:197)
    at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:863)
    at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:741)
    at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:192)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:590)
    at java.lang.Thread.run(Thread.java:748)

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

-- Head --
Thread: Server thread
Stacktrace:
    at com.Cowlegs.HXHMod.util.handlers.hxhEventHandler.onPlayerLogsIn(hxhEventHandler.java:39)
    at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_14_hxhEventHandler_onPlayerLogsIn_PlayerLoggedInEvent.invoke(.dynamic)
    at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:90)
    at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:179)
    at net.minecraftforge.fml.common.FMLCommonHandler.firePlayerLoggedIn(FMLCommonHandler.java:574)
    at net.minecraft.server.management.PlayerList.initializeConnectionToPlayer(PlayerList.java:228)
    at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher.completeServerSideConnection(NetworkDispatcher.java:259)
    at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher.access$100(NetworkDispatcher.java:72)
    at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher$1.update(NetworkDispatcher.java:208)
    at net.minecraft.network.NetworkManager.processReceivedPackets(NetworkManager.java:307)

-- Ticking connection --
Details:
    Connection: net.minecraft.network.NetworkManager@5f2bdea0
Stacktrace:
    at net.minecraft.network.NetworkSystem.networkTick(NetworkSystem.java:197)
    at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:863)
    at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:741)
    at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:192)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:590)
    at java.lang.Thread.run(Thread.java:748)

-- System Details --
Details:
    Minecraft Version: 1.12.2
    Operating System: Windows 10 (amd64) version 10.0
    Java Version: 1.8.0_161, Oracle Corporation
    Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
    Memory: 540431800 bytes (515 MB) / 1038876672 bytes (990 MB) up to 1038876672 bytes (990 MB)
    JVM Flags: 3 total; -Xincgc -Xmx1024M -Xms1024M
    IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
    FML: MCP 9.42 Powered by Forge 14.23.2.2624 5 mods loaded, 5 mods active
    States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored

    | State     | ID        | Version      | Source                           | Signature |
    |:--------- |:--------- |:------------ |:-------------------------------- |:--------- |
    | UCHIJAAAA | minecraft | 1.12.2       | minecraft.jar                    | None      |
    | UCHIJAAAA | mcp       | 9.42         | minecraft.jar                    | None      |
    | UCHIJAAAA | FML       | 8.0.99.99    | forgeSrc-1.12.2-14.23.2.2624.jar | None      |
    | UCHIJAAAA | forge     | 14.23.2.2624 | forgeSrc-1.12.2-14.23.2.2624.jar | None      |
    | UCHIJAAAA | hxh       | 1.0          | bin                              | None      |

    Loaded coremods (and transformers): 
    GL info: ~~ERROR~~ RuntimeException: No OpenGL context found in the current thread.
    Profiler Position: N/A (disabled)
    Player Count: 1 / 8; [EntityPlayerMP['Player899'/262, l='New World', x=-173.94, y=69.00, z=-58.50]]
    Type: Integrated Server (map_client.txt)
    Is Modded: Definitely; Client brand changed to 'fml,forge'

 

Edited March 25, 2018 by cowlegs
Added crash report

[Matryoshika]

Please provide the crash-log. It has all the answers.

Your eventhandler also looks awefully a lot like a TextComponentString class, not an actual class that deals with events...

For now I'm going to guess that you're using the PlayerLoggedInEvent?
You need to wait a tick before doing anything with the given player from that event; it isn't fully initialized, leading to several null-pointers.

[cowlegs]

2 minutes ago, Matryoshika said:

Please provide the crash-log. It has all the answers.

Your eventhandler also looks awefully a lot like a TextComponentString class, not an actual class that deals with events...

For now I'm going to guess that you're using the PlayerLoggedInEvent?
You need to wait a tick before doing anything with the given player from that event; it isn't fully initialized, leading to several null-pointers.

You'd be right, I AM using the PlayerLoggedInEvent  (Sorry if I didn't provide enough info, since I'm pretty new to this I sometimes get confused on what I should and shouldn't list out..). I also realized I should probably add the crash log, and edited it in. Though you wouldn't have noticed if you hadn't refreshed the page, so my bad  

Either way, what would you suggest I do to fix this?

[cowlegs]

I actually managed to find the solution after doing some digging and experimentation with this - thanks to your help, so thanks!