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‎.github/workflows/build.yml‎

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name: Build
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on:
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push:
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tags:
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- 'v*'
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jobs:
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build:
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runs-on: ubuntu-latest
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steps:
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- uses: actions/checkout@v4
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- name: Set up JDK 21
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uses: actions/setup-java@v4
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with:
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java-version: '21'
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distribution: 'temurin'
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- name: Setup Gradle
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uses: gradle/actions/setup-gradle@v3
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- name: Make gradlew executable
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run: chmod +x ./gradlew
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- name: Build with Gradle
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run: |
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VERSION=${GITHUB_REF_NAME#v}
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./gradlew collectJars -Pversion=$VERSION
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- name: Upload Artifacts
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uses: actions/upload-artifact@v4
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with:
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name: netutils-jars
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path: build/libs/*.jar

‎.gitignore‎

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# Gradle
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.gradle/
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build/
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out/
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# IDE
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.idea/
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*.iml
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*.ipr
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*.iws
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.vscode/
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*.code-workspace
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# Fabric/Loom
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run/
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*.log
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remappedSrc/
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# Build artifacts
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build_log.txt
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*.jar
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!gradle/wrapper/gradle-wrapper.jar
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# OS
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.DS_Store
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Thumbs.db
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# Misc
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*.bak
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*.tmp
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# Eclipse
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.settings/
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.classpath
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.project
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eclipse/
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bin/
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.loom-cache/
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.qmap/
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.kotlin/

‎LICENSE‎

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MIT License
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Copyright (c) 2025 mishl
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.

‎README.md‎

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# NetUtils
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A Network utility mod for dupe hunting and packet manipulation.
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## Features
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- **Packet Control**: Delay or toggle outgoing packets.
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- **De-sync**: Intentionally desynchronize your client from the server (Ghost Mode).
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- **Inventory Control**: Close inventory screens without sending packets to the server.
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- **Resource Pack Control**: Bypass or force-deny server resource packs.
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## Usage
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Press **V** to restore the last closed screen.
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## Building
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Run the following command to build for both Fabric and NeoForge:
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```bash
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./gradlew collectJars
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```
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The output jars will be in `build/libs/`.
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## License
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This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details.

‎build.gradle.kts‎

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plugins {
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id("architectury-plugin") version "3.4.161"
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id("dev.architectury.loom") version "1.13.467" apply false
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kotlin("jvm") version "2.3.0" apply false
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}
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architectury {
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minecraft = "1.21.11"
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}
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subprojects {
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apply(plugin = "dev.architectury.loom")
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apply(plugin = "org.jetbrains.kotlin.jvm")
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repositories {
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mavenCentral()
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maven("https://maven.fabricmc.net/")
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maven("https://maven.architectury.dev/")
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maven("https://maven.minecraftforge.net/")
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maven("https://maven.neoforged.net/releases/")
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maven("https://maven.terraformersmc.com/releases/")
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}
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}
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allprojects {
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group = "org.netutils"
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version = "1.0.0"
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}
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tasks.register("collectJars", Copy::class) {
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dependsOn(subprojects.map { it.tasks.named("build") })
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from(project(":fabric").tasks.named("remapJar").map { (it as org.gradle.jvm.tasks.Jar).archiveFile })
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from(project(":forge").tasks.named("remapJar").map { (it as org.gradle.jvm.tasks.Jar).archiveFile })
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into(layout.buildDirectory.dir("libs"))
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rename { "netutils-${it}" }
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doLast {
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println("Universal compilation complete. Jars collected in: ${layout.buildDirectory.dir("libs").get()}")
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}
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}

‎common/build.gradle.kts‎

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plugins {
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id("dev.architectury.loom")
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id("architectury-plugin")
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kotlin("jvm")
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}
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architectury {
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common("fabric", "forge")
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}
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loom {
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silentMojangMappingsLicense()
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}
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dependencies {
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minecraft("com.mojang:minecraft:1.21.11")
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mappings(loom.officialMojangMappings())
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modImplementation("dev.architectury:architectury:${rootProject.property("architectury_version")}")
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implementation(kotlin("stdlib"))
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}
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kotlin {
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jvmToolchain(21)
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}
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sourceSets {
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main {
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java.srcDirs("src/main/java", "src/main/kotlin")
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}
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}

‎common/src/main/java/org/netutils/mixin/BookEditScreenMixin.java‎

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package org.netutils.mixin;
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import net.minecraft.client.Minecraft;
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import net.minecraft.client.gui.screens.Screen;
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import net.minecraft.client.gui.screens.inventory.BookEditScreen;
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import net.minecraft.network.chat.Component;
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import org.spongepowered.asm.mixin.Mixin;
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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.netutils.SharedVariables;
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import org.netutils.gui.WidgetUtils;
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@Mixin(BookEditScreen.class)
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public abstract class BookEditScreenMixin extends Screen {
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protected BookEditScreenMixin(Component component) {
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super(component);
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}
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@Inject(at = @At("TAIL"), method = "init")
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public void init(CallbackInfo ci) {
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if (SharedVariables.enabled) {
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WidgetUtils.INSTANCE.createWidgets(Minecraft.getInstance(), this);
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}
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}
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}

‎common/src/main/java/org/netutils/mixin/BookScreenMixin.java‎

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package org.netutils.mixin;
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import net.minecraft.client.Minecraft;
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import net.minecraft.client.gui.screens.Screen;
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import net.minecraft.client.gui.screens.inventory.BookViewScreen;
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import net.minecraft.network.chat.Component;
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import org.spongepowered.asm.mixin.Mixin;
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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.netutils.SharedVariables;
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import org.netutils.gui.WidgetUtils;
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@Mixin(BookViewScreen.class)
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public abstract class BookScreenMixin extends Screen {
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protected BookScreenMixin(Component component) {
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super(component);
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}
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@Inject(at = @At("TAIL"), method = "init")
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public void init(CallbackInfo ci) {
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if (SharedVariables.enabled) {
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WidgetUtils.INSTANCE.createWidgets(Minecraft.getInstance(), this);
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}
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}
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}

‎common/src/main/java/org/netutils/mixin/ChatScreenMixin.java‎

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package org.netutils.mixin;
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import net.minecraft.client.gui.screens.ChatScreen;
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import org.netutils.command.ClientCommands;
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import org.spongepowered.asm.mixin.Mixin;
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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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/**
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* Mixin to intercept chat messages and handle client-side commands.
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*/
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@Mixin(ChatScreen.class)
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public class ChatScreenMixin {
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/**
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* Intercept the handleChatInput method to handle client commands.
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* This method is called when the user presses Enter in the chat.
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* In 1.21.11, handleChatInput returns void, so we use CallbackInfo.
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*/
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@Inject(at = @At("HEAD"), method = "handleChatInput", cancellable = true)
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private void netutils$onHandleChatInput(String message, boolean addToHistory, CallbackInfo ci) {
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// Check if this is a NetUtils command
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if (message.startsWith(ClientCommands.PREFIX)) {
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// Try to execute the command
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boolean handled = ClientCommands.INSTANCE.tryExecute(message);
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if (handled) {
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// Cancel the original method - command was handled
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ci.cancel();
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}
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}
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}
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}

‎common/src/main/java/org/netutils/mixin/ClientCommonNetworkHandlerMixin.java‎

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package org.netutils.mixin;
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import net.minecraft.network.protocol.common.ClientboundResourcePackPushPacket;
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import net.minecraft.client.multiplayer.ClientCommonPacketListenerImpl;
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import net.minecraft.network.protocol.common.ServerboundResourcePackPacket;
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import org.spongepowered.asm.mixin.Mixin;
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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.netutils.SharedVariables;
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import org.netutils.NetUtilsCommon;
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/**
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* Mixin for resource pack handling.
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* Allows bypassing or denying server resource packs.
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*/
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@Mixin(ClientCommonPacketListenerImpl.class)
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public class ClientCommonNetworkHandlerMixin {
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@Inject(method = "handleResourcePackPush", at = @At("HEAD"), cancellable = true)
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private void onResourcePackSend(ClientboundResourcePackPushPacket packet, CallbackInfo ci) {
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if (SharedVariables.bypassResourcePack) {
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// Pretend we accepted and loaded the pack
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NetUtilsCommon.LOGGER.info("Resource pack bypassed: {}", packet.url());
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ci.cancel();
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} else if (SharedVariables.resourcePackForceDeny) {
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// Decline the resource pack
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NetUtilsCommon.LOGGER.info("Resource pack denied: {}", packet.url());
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ci.cancel();
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}
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}
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}
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