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[1.12.2] Question on event listener callback ordering...

OreCruncher

By OreCruncher
in Modder Support

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OreCruncher Creeper Killer

OreCruncher

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I see that the list of listeners for an event is maintained in an ArrayList.  Assuming multiple listeners with the same priority it means that the listeners are invoked in order of registration.  My question is whether this is just happenstance because an ArrayList is used to track listeners, or can I be assume that this "in order" behavior is part of the event subscription contract?

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Animefan8888 Reality Controller

Animefan8888

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4 minutes ago, OreCruncher said:

question is whether this is just happenstance because an ArrayList is used to track listeners, or can I be assume that this "in order" behavior is part of the event subscription contract?

Well it will always be true at least as long as they use a List. And no one modifies the List. Does that answer your question?

Edited by Animefan8888

VANILLA MINECRAFT CLASSES ARE THE BEST RESOURCES WHEN MODDING

I will be posting 1.15.2 modding tutorials on this channel. If you want to be notified of it do the normal YouTube stuff like subscribing, ect.

Forge and vanilla BlockState generator.

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OreCruncher Creeper Killer

OreCruncher

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Based on your statement I will assume that it is by happenstance of the implementation rather than an intended design feature of the event system.  Thanks!

 

EDIT: A little more background as to why I asked the question.  I am reworking some of the implementation in my mod which resulted in a dependency ordering between some objects.  These objects were registered to listen on the event bus for the same modded events.  Because of design I couldn't just go in and change priorities of the event listeners.  I noticed the "in order" callback behavior of the event bus but was unsure if it was intentional or not.  As result of this post I need to go back and rework my design.  Yay.

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    • TileEntity
      server 1.18.2 forge

      By TileEntity · Posted

      Use Java 17 instead of java 21
    • Wil_Enp.
      server 1.18.2 forge

      By Wil_Enp. · Posted

      By the way, the server says it pauses after it tells me done, I don't understand why.
    • Wil_Enp.
      server 1.18.2 forge

      By Wil_Enp. · Posted

      C:\Users\Wil_Enp\Desktop\1>REM Forge requires a configured set of both JVM and program arguments. C:\Users\Wil_Enp\Desktop\1>REM Add custom JVM arguments to the user_jvm_args.txt C:\Users\Wil_Enp\Desktop\1>REM Add custom program arguments {such as nogui} to this file in the next line before the  or C:\Users\Wil_Enp\Desktop\1>REM  pass them to this script directly C:\Users\Wil_Enp\Desktop\1>java @user_jvm_args.txt @libraries/net/minecraftforge/forge/1.18.2-40.2.18/win_args.txt 2024-04-28 13:58:58,840 main WARN Advanced terminal features are not available in this environment [13:58:59] [main/INFO] [cp.mo.mo.Launcher/MODLAUNCHER]: ModLauncher running: args [--launchTarget, forgeserver, --fml.forgeVersion, 40.2.18, --fml.mcVersion, 1.18.2, --fml.forgeGroup, net.minecraftforge, --fml.mcpVersion, 20220404.173914] [13:58:59] [main/INFO] [cp.mo.mo.Launcher/MODLAUNCHER]: ModLauncher 9.1.3+9.1.3+main.9b69c82a starting: java version 21.0.2 by BellSoft [13:58:59] [main/INFO] [mixin/]: SpongePowered MIXIN Subsystem Version=0.8.5 Source=union:/C:/Users/Wil_Enp/Desktop/1/libraries/org/spongepowered/mixin/0.8.5/mixin-0.8.5.jar%2314!/ Service=ModLauncher Env=SERVER [13:58:59] [main/WARN] [ne.mi.fm.lo.mo.ModFileParser/LOADING]: Mod file C:\Users\Wil_Enp\Desktop\1\libraries\net\minecraftforge\fmlcore\1.18.2-40.2.18\fmlcore-1.18.2-40.2.18.jar is missing mods.toml file [13:58:59] [main/WARN] [ne.mi.fm.lo.mo.ModFileParser/LOADING]: Mod file C:\Users\Wil_Enp\Desktop\1\libraries\net\minecraftforge\javafmllanguage\1.18.2-40.2.18\javafmllanguage-1.18.2-40.2.18.jar is missing mods.toml file [13:58:59] [main/WARN] [ne.mi.fm.lo.mo.ModFileParser/LOADING]: Mod file C:\Users\Wil_Enp\Desktop\1\libraries\net\minecraftforge\lowcodelanguage\1.18.2-40.2.18\lowcodelanguage-1.18.2-40.2.18.jar is missing mods.toml file [13:58:59] [main/WARN] [ne.mi.fm.lo.mo.ModFileParser/LOADING]: Mod file C:\Users\Wil_Enp\Desktop\1\libraries\net\minecraftforge\mclanguage\1.18.2-40.2.18\mclanguage-1.18.2-40.2.18.jar is missing mods.toml file [13:58:59] [main/INFO] [ne.mi.fm.lo.mo.JarInJarDependencyLocator/]: No dependencies to load found. 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    • TileEntity
      I keep getting error internal Exception: io.netty.handler codec.Decoder Exception Unknown serializer type 118

      By TileEntity · Posted

      Some kind of rendering issue - do you have an Nvidia or AMD/ATI GPU?
    • TileEntity
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      By TileEntity · Posted

      Add crash-reports with sites like https://paste.ee/ and paste the link to it here There is an issue with spectrelib - try other builds or remove this mod and the mods requiring it

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