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[SOLVED] Playing sounds causes ConcurrentModificationException


leduyquang753
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So I am making a Forge 1.12 mod that can play note block song (.nbs) files. But when I tried to play note block sounds to the client:

 

String name = Instrument.getInstrument(note.getInstrument()); // One of "block.note.harp", "block.note.bass", "block.note.basedrum",...
float pitch = (float)Math.pow(2.0D, (double)(note.getKey - 45) / 12.0D);  // Ranges from 1 to 2.
Minecraft.getMinecraft().player.playSound(new SoundEvent(new ResourceLocation("minecraft", name)), 1F, pitch);

 

it throws ConcurrentModificationException:

[8 | 22/4/2018 14h07:55] [main/FATAL]: Unreported exception thrown!
java.util.ConcurrentModificationException: null
	at com.google.common.collect.HashBiMap$Itr.hasNext(HashBiMap.java:401) ~[guava-21.0.jar:?]
	at net.minecraft.client.audio.SoundManager.updateAllSounds(SoundManager.java:272) ~[SoundManager.class:?]
	at net.minecraft.client.audio.SoundHandler.update(SoundHandler.java:297) ~[SoundHandler.class:?]
	at net.minecraft.client.Minecraft.runTick(Minecraft.java:1983) ~[Minecraft.class:?]
	at net.minecraft.client.Minecraft.runGameLoop(Minecraft.java:1186) ~[Minecraft.class:?]
	at net.minecraft.client.Minecraft.run(Minecraft.java:441) [Minecraft.class:?]
	at net.minecraft.client.main.Main.main(Main.java:118) [Main.class:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_131]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_131]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_131]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_131]
	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_131]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_131]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_131]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_131]
	at net.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:97) [start/:?]
	at GradleStart.main(GradleStart.java:25) [start/:?]

 

Another thing to note is the mod plays multiple sounds at once.

Is this the right way to play multiple sounds in Forge? Or is there another way to handle this?

Edited by leduyquang753
Solved thanks to @diesieben07.
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4 minutes ago, leduyquang753 said:

So when I called EntityPlayerSP#playSound, it was run on both logical sides?

pretty much, you should be able to just surround your code with an world.isRemote check

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13 minutes ago, leduyquang753 said:

I tried surrounding my code with World#isRemote on both Minecraft.player.world and Minecraft.world but it still crashes... Super confused.

Both of those are client side only. As soon as the server tries to load the Minecraft class, it fails to find it.

You're already being passed a world object, somewhere. Post more of your code.

Apparently I'm a complete and utter jerk and come to this forum just like to make fun of people, be confrontational, and make your personal life miserable.  If you think this is the case, JUST REPORT ME.  Otherwise you're just going to get reported when you reply to my posts and point it out, because odds are, I was trying to be nice.

 

Exception: If you do not understand Java, I WILL NOT HELP YOU and your thread will get locked.

 

DO NOT PM ME WITH PROBLEMS. No help will be given.

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I am not downloading a zip file.

Post your code on GitHub.

Apparently I'm a complete and utter jerk and come to this forum just like to make fun of people, be confrontational, and make your personal life miserable.  If you think this is the case, JUST REPORT ME.  Otherwise you're just going to get reported when you reply to my posts and point it out, because odds are, I was trying to be nice.

 

Exception: If you do not understand Java, I WILL NOT HELP YOU and your thread will get locked.

 

DO NOT PM ME WITH PROBLEMS. No help will be given.

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https://github.com/leduyquang753/NBS-Player/blob/master/src/main/java/com/xxmicloxx/NoteBlockAPI/SongPlayer.java#L85

 

You're creating your own threads?

Yeah, that won't create problems, ever.

Apparently I'm a complete and utter jerk and come to this forum just like to make fun of people, be confrontational, and make your personal life miserable.  If you think this is the case, JUST REPORT ME.  Otherwise you're just going to get reported when you reply to my posts and point it out, because odds are, I was trying to be nice.

 

Exception: If you do not understand Java, I WILL NOT HELP YOU and your thread will get locked.

 

DO NOT PM ME WITH PROBLEMS. No help will be given.

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