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New to Forge & MC modding - writing debug output to chat window instead of log file


eSonOfAnder

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Hi all,

 

I apologize if the answer to this is painfully obvious and I'm just missing it, but I've been scouring this forum and Google for a little while and haven't found a solution. I'm working through an existing code base and am looking to add some debug output that I can view from within the client in the chat window rather than having to switch out to refresh the log file to see what's going on. So far, almost everything I've found says to hook on to the player object, but this is problematic for things like blocks that are loading in before the player has fully loaded in (for a single player environment), and would completely break for a dedicated server if there is no player connected. I have found a singular reference that sounds like it had potential, but the method it references doesn't appear to exist for MC 1.12.2:

 

https://www.minecraftforum.net/forums/mapping-and-modding-java-edition/minecraft-mods/modification-development/2264126-printing-text-to-chat?comment=4

 

MinecraftServer.getServer().getConfigurationManager().sendChatMsg(new ChatComponentText("Sent to all players"));

 

I'm not overly concerned about my changes not being properly sided, as this is purely debug information and will not be exported into any packaged code, and it's more for ease of use than anything else. Appreciate any assistance that you might be able to provide here!

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    • Came here for the same reason. But for me it's the client. After following your instructions with the jar, I ended up with the following error. I assume to have chosen the right jar   -jar "${lminecraft_library_path}/net/minecraftforge/forge/1.20.4-49.0.3/forge-1.20.4-49.0.3-shim.jar"   Minecraft 1.20.4 Forge: 1.20.4 - 49.0.3   ;--- cut here --- [7.633s][info][class,load] cpw.mods.jarhandling.SecureJar$ModuleDataProvider source: file:/home/habibiboy/.minecraft/libraries/net/minecraftforge/securemodules/2.2.7/securemodules-2.2.7.jar [7.636s][info][class,load] java.security.CodeSigner source: jrt:/java.base [7.636s][info][class,load] java.nio.file.spi.FileSystemProvider$1 source: jrt:/java.base [7.637s][info][class,load] java.util.ServiceLoader source: shared objects file [7.639s][info][class,load] java.util.ServiceLoader$ModuleServicesLookupIterator source: shared objects file [7.639s][info][class,load] java.util.Spliterators$ArraySpliterator source: shared objects file [7.640s][info][class,load] java.util.Spliterators$1Adapter source: shared objects file [7.643s][info][class,load] java.util.Arrays$ArrayList source: shared objects file [7.648s][info][class,load] java.util.concurrent.CopyOnWriteArrayList$COWIterator source: shared objects file [7.649s][info][class,load] java.util.ServiceLoader$LazyClassPathLookupIterator source: shared objects file [7.649s][info][class,load] java.util.ServiceLoader$2 source: shared objects file [7.649s][info][class,load] java.util.ServiceLoader$3 source: shared objects file [7.652s][info][class,load] jdk.internal.module.ModulePatcher$PatchedModuleReader source: jrt:/java.base [7.654s][info][class,load] sun.net.www.protocol.jrt.Handler source: jrt:/java.base [7.663s][info][class,load] jdk.nio.zipfs.ZipFileSystemProvider source: jrt:/jdk.zipfs [7.667s][info][class,load] java.nio.file.FileSystemNotFoundException source: jrt:/java.base [7.672s][info][class,load] jdk.nio.zipfs.ZipFileSystem source: jrt:/jdk.zipfs [7.675s][info][class,load] java.lang.UnsupportedOperationException source: jrt:/java.base [7.676s][info][class,load] java.util.zip.ZipException source: jrt:/java.base [7.677s][info][class,load] java.nio.file.ProviderMismatchException source: jrt:/java.base [7.680s][info][class,load] java.nio.file.AccessMode source: jrt:/java.base [7.681s][info][class,load] java.nio.file.DirectoryStream$Filter source: jrt:/java.base [7.683s][info][class,load] java.nio.file.DirectoryStream source: jrt:/java.base [7.684s][info][class,load] java.nio.file.FileStore source: jrt:/java.base [7.688s][info][class,load] java.util.concurrent.Executor source: shared objects file [7.688s][info][class,load] java.util.concurrent.ExecutorService source: shared objects file [7.690s][info][class,load] java.nio.channels.AsynchronousChannel source: jrt:/java.base [7.690s][info][class,load] java.nio.channels.AsynchronousFileChannel source: jrt:/java.base [7.691s][info][class,load] java.util.ServiceLoader$1 source: shared objects file [7.692s][info][class,load] java.util.ServiceLoader$Provider source: shared objects file [7.692s][info][class,load] java.util.ServiceLoader$ProviderImpl source: shared objects file [7.693s][info][class,load] jdk.internal.reflect.DirectConstructorHandleAccessor source: shared objects file [7.695s][info][class,load] jdk.internal.jrtfs.JrtFileSystemProvider source: jrt:/java.base [7.699s][info][class,load] java.util.Collections$EmptyEnumeration source: shared objects file [7.699s][info][class,load] jdk.internal.loader.BuiltinClassLoader$1 source: shared objects file [7.700s][info][class,load] java.lang.CompoundEnumeration source: shared objects file [7.701s][info][class,load] jdk.internal.loader.URLClassPath$1 source: shared objects file [7.702s][info][class,load] sun.net.www.protocol.jrt.JavaRuntimeURLConnection source: jrt:/java.base [7.710s][info][class,load] sun.net.www.protocol.jrt.JavaRuntimeURLConnection$$Lambda/0x00007f5d70055728 source: sun.net.www.protocol.jrt.JavaRuntimeURLConnection [7.719s][info][class,load] sun.net.www.protocol.jrt.JavaRuntimeURLConnection$1 source: jrt:/java.base [7.720s][info][class,load] jdk.internal.jimage.ImageBufferCache source: jrt:/java.base [7.722s][info][class,load] jdk.internal.jimage.ImageBufferCache$1 source: jrt:/java.base [7.723s][info][class,load] jdk.internal.jimage.ImageBufferCache$2 source: jrt:/java.base [7.724s][info][class,load] java.util.AbstractMap$SimpleEntry source: jrt:/java.base [7.727s][info][class,load] java.util.LinkedHashMap$LinkedKeySet source: jrt:/java.base [7.731s][info][class,load] java.util.LinkedHashMap$LinkedHashIterator source: shared objects file [7.731s][info][class,load] java.util.LinkedHashMap$LinkedKeyIterator source: jrt:/java.base [7.732s][info][class,load] java.util.Collections$UnmodifiableList source: shared objects file [7.732s][info][class,load] java.util.Collections$UnmodifiableRandomAccessList source: shared objects file [7.736s][info][class,load] java.lang.invoke.LambdaForm$DMH/0x00007f5d7000c400 source: __JVM_LookupDefineClass__ [7.741s][info][class,load] cpw.mods.jarhandling.impl.Jar$$Lambda/0x00007f5d7000adb0 source: cpw.mods.jarhandling.impl.Jar [7.746s][info][class,load] cpw.mods.jarhandling.impl.Jar$$Lambda/0x00007f5d7000aff8 source: cpw.mods.jarhandling.impl.Jar [7.748s][info][class,load] java.lang.ExceptionInInitializerError source: jrt:/java.base [7.749s][info][class,load] java.lang.StackTraceElement$HashedModules source: jrt:/java.base [7.751s][info][class,load] java.lang.invoke.WrongMethodTypeException source: jrt:/java.base [7.751s][info][class,load] java.lang.reflect.InvocationTargetException source: jrt:/java.base Exception in thread "main" [7.758s][info][class,load] java.lang.Throwable$PrintStreamOrWriter source: jrt:/java.base [7.759s][info][class,load] java.lang.Throwable$WrappedPrintStream source: jrt:/java.base java.lang.reflect.InvocationTargetException     at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:118)     at java.base/java.lang.reflect.Method.invoke(Method.java:580)     at net.minecraftforge.bootstrap.shim.Main.main(Main.java:94) Caused by: java.lang.ExceptionInInitializerError     at cpw.mods.jarhandling.SecureJar.from(SecureJar.java:64)     at cpw.mods.jarhandling.SecureJar.from(SecureJar.java:60)     at net.minecraftforge.bootstrap.ClassPathHelper.getCleanedClassPathImpl(ClassPathHelper.java:178)     at net.minecraftforge.bootstrap.ClassPathHelper.getCleanedClassPath(ClassPathHelper.java:46)     at net.minecraftforge.bootstrap.Bootstrap.start(Bootstrap.java:28)     at net.minecraftforge.bootstrap.ForgeBootstrap.main(ForgeBootstrap.java:18)     at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)     ... 2 more Caused by: java.lang.IllegalStateException: Couldn't find UnionFileSystemProvider     at cpw.mods.jarhandling.impl.Jar.lambda$static$1(Jar.java:48)     at java.base/java.util.Optional.orElseThrow(Optional.java:403)     at cpw.mods.jarhandling.impl.Jar.<clinit>(Jar.java:48)     ... 9 more [7.783s][info][class,load] java.util.IdentityHashMap$IdentityHashMapIterator source: shared objects file [7.784s][info][class,load] java.util.IdentityHashMap$KeyIterator source: shared objects file [7.787s][info][class,load] java.lang.Shutdown source: shared objects file [7.789s][info][class,load] java.lang.Shutdown$Lock source: shared objects file ;--- cut here ---   I tried various things here. Java 17, then Java 21, Searched for missing objects, used strace -ff java ... and so on. The securejar class is there, accessible, permissions all fine. Still running into this issue.
    • sorry for the late answer, I tried it but i hadthe same result crash reportlog
    • Your post triggered the anti-spam which hid it from everyone. Please share a *link* to your debug.log and/or crash report on https://paste.ee to avoid this in future so that you don't have to wait so long for help.
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