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emyfopsemyfops
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Crash report dynamic mapping
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‎common/src/main/java/com/lambda/mixin/CrashReportMixin.java‎

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/*
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* Copyright 2025 Lambda
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package com.lambda.mixin;
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import com.lambda.Lambda;
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import com.lambda.util.DynamicException;
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import net.minecraft.client.MinecraftClient;
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import net.minecraft.util.Util;
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import net.minecraft.util.crash.CrashReport;
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import org.spongepowered.asm.mixin.Final;
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import org.spongepowered.asm.mixin.Mixin;
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import org.spongepowered.asm.mixin.Mutable;
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import org.spongepowered.asm.mixin.Shadow;
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import org.spongepowered.asm.mixin.injection.At;
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import org.spongepowered.asm.mixin.injection.Inject;
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import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
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import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
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// Modify the crash report behavior for dynamic remapping and Easter egg
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@Mixin(CrashReport.class)
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public class CrashReportMixin {
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@Mutable
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@Shadow @Final private Throwable cause;
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@Inject(method = "<init>(Ljava/lang/String;Ljava/lang/Throwable;)V", at = @At("TAIL"))
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void injectConstructor(String message, Throwable cause, CallbackInfo ci) {
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if (!Lambda.INSTANCE.isDebug() && MinecraftClient.getInstance() != null) {
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this.cause = new DynamicException(cause);
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}
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}
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@Inject(method = "generateWittyComment()Ljava/lang/String;", at = @At("HEAD"), cancellable = true)
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private static void generateWittyComment(CallbackInfoReturnable<String> cir) {
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String[] strings = new String[]{
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"Who set us up the TNT?",
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"Everything's going to plan. No, really, that was supposed to happen.",
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"Uh... Did I do that?",
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"Oops.",
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"Why did you do that?",
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"I feel sad now :(",
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"My bad.",
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"I'm sorry, Dave.",
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"I let you down. Sorry :(",
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"On the bright side, I bought you a teddy bear!",
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"Daisy, daisy...",
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"Oh - I know what I did wrong!",
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"Hey, that tickles! Hehehe!",
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"I blame Dinnerbone.",
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"You should try our sister game, Minceraft!",
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"Don't be sad. I'll do better next time, I promise!",
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"Don't be sad, have a hug! <3",
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"I just don't know what went wrong :(",
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"Shall we play a game?",
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"Quite honestly, I wouldn't worry myself about that.",
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"I bet Cylons wouldn't have this problem.",
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"Sorry :(",
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"Surprise! Haha. Well, this is awkward.",
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"Would you like a cupcake?",
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"Hi. I'm Minecraft, and I'm a crashaholic.",
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"Ooh. Shiny.",
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"This doesn't make any sense!",
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"Why is it breaking :(",
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"Don't do that.",
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"Ouch. That hurt :(",
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"You're mean.",
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"This is a token for 1 free hug. Redeem at your nearest Mojangsta: [~~HUG~~]",
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"There are four lights!",
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"But it works on my machine.",
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"Popbob was here.",
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"The oldest anarchy server in Minecraft."
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};
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try {
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cir.setReturnValue(strings[(int)(Util.getMeasuringTimeNano() % (long)strings.length)]);
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} catch (Throwable var2) {
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cir.setReturnValue("Witty comment unavailable :(");
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}
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}
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}

‎common/src/main/kotlin/com/lambda/util/DynamicException.kt‎

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/*
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* Copyright 2025 Lambda
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package com.lambda.util
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import com.lambda.util.DynamicReflectionSerializer.remappedName
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import java.io.PrintStream
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import java.io.PrintWriter
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class DynamicException(original: Throwable) : Throwable(original) {
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private val remappedStackTrace = original.stackTrace.remapClassNames()
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init {
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stackTrace = remappedStackTrace
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}
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private fun Array<StackTraceElement>.remapClassNames() =
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map { element ->
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StackTraceElement(
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element.className.remappedName,
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element.methodName.remappedName,
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element.fileName,
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element.lineNumber
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)
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}.toTypedArray()
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override fun printStackTrace(s: PrintStream) {
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s.println(this)
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remappedStackTrace.forEach { element ->
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s.println("\tat $element")
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}
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}
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override fun printStackTrace(s: PrintWriter) {
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s.println(this)
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remappedStackTrace.forEach { element ->
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s.println("\tat $element")
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}
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}
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override fun toString(): String = localizedMessage
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}

‎common/src/main/resources/lambda.mixins.common.json‎

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"render.BackgroundRendererMixin",
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"render.BlockRenderManagerMixin",
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"render.CameraMixin",
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"render.ChatHudMixin",
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"render.CapeFeatureRendererMixin",
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"render.ChatHudMixin",
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"render.ChatInputSuggestorMixin",
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"render.ChatScreenMixin",
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"render.DebugHudMixin",
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"world.ClientChunkManagerMixin",
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"world.ClientWorldMixin",
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"world.StructureTemplateMixin",
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"world.WorldMixin"
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"world.WorldMixin",
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"CrashReportMixin"
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],
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"injectors": {
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"defaultRequire": 1

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