Test Mcp Helloworld

Okay, here's a "Hello, world!" example for an MCP (Minecraft Coder Pack) server, along with explanations to help you understand it: **Explanation:** * **MCP (Minecraft Coder Pack):** MCP is a toolset that deobfuscates and decompiles the Minecraft source code, making it readable and modifiable. It's the foundation for creating Minecraft mods. This example assumes you have an MCP development environment set up. * **Server-Side Mod:** This example creates a simple server-side mod. This means the code runs on the Minecraft server, not on the client (player's computer). Server-side mods can affect gameplay, add new features, and manage the server environment. * **`FMLInitializationEvent`:** This event is fired during the server's initialization phase. It's a good place to register commands, load configurations, and perform other setup tasks. * **`MinecraftServer`:** This class represents the Minecraft server instance. You can access it to get information about the server, players, world, etc. * **`ServerCommandManager`:** This class manages the commands available on the server. We'll use it to register our "hello" command. * **`CommandBase`:** This is the base class for all commands. We'll extend it to create our custom "hello" command. * **`ICommandSender`:** This interface represents the entity that executed the command (e.g., a player, the console). * **`ChatMessageComponent`:** This class is used to create formatted chat messages. **Code Example (Java):** ```java package com.example.helloworld; import net.minecraft.command.CommandBase; import net.minecraft.command.ICommandSender; import net.minecraft.server.MinecraftServer; import net.minecraft.util.ChatComponentText; import net.minecraftforge.fml.common.Mod; import net.minecraftforge.fml.common.event.FMLInitializationEvent; import net.minecraftforge.fml.common.event.FMLServerStartingEvent; @Mod(modid = "helloworld", name = "Hello World Mod", version = "1.0") public class HelloWorldMod { @Mod.EventHandler public void init(FMLInitializationEvent event) { System.out.println("Hello World Mod Initializing!"); } @Mod.EventHandler public void serverLoad(FMLServerStartingEvent event) { System.out.println("Registering command!"); event.registerServerCommand(new CommandHello()); } public static class CommandHello extends CommandBase { @Override public String getCommandName() { return "hello"; } @Override public String getCommandUsage(ICommandSender sender) { return "/hello"; } @Override public void processCommand(ICommandSender sender, String[] args) { sender.addChatMessage(new ChatComponentText("Hello, world!")); } @Override public int getRequiredPermissionLevel() { return 0; // Everyone can use this command } } } ``` **Steps to Use:** 1. **Set up your MCP environment:** Follow the instructions for setting up MCP for your Minecraft version. 2. **Create the Java file:** Create a new Java file named `HelloWorldMod.java` (or whatever you prefer) in your mod's source directory (e.g., `src/main/java/com/example/helloworld`). Paste the code above into the file. Make sure the package name (`com.example.helloworld`) matches your directory structure. 3. **Create `mcmod.info`:** Create a file named `mcmod.info` in the `src/main/resources` directory. This file provides metadata about your mod. A simple example: ```json [ { "modid": "helloworld", "name": "Hello World Mod", "description": "A simple Hello World mod for Minecraft.", "version": "1.0", "mcversion": "1.12.2", // Replace with your Minecraft version "authorList": ["Your Name"] } ] ``` 4. **Recompile and Reobfuscate:** Use the MCP commands to recompile and reobfuscate the code. This will create the mod file. Typically, you'll use commands like: ```bash ./gradlew build ``` (or the equivalent commands for your MCP setup). The resulting mod file will be in the `build/libs` directory. 5. **Install the Mod:** Copy the generated `.jar` file (e.g., `helloworld-1.0.jar`) to the `mods` folder of your Minecraft server. 6. **Run the Server:** Start your Minecraft server. 7. **Use the Command:** In the Minecraft server console or in-game (if you have operator privileges), type `/hello` and press Enter. You should see the message "Hello, world!" in the chat. **Important Notes:** * **Minecraft Version:** Make sure the code is compatible with the Minecraft version you are using. The `@Mod` annotation and the `mcmod.info` file should reflect the correct version. * **Dependencies:** Ensure that your MCP environment is set up correctly with the necessary dependencies (Minecraft Forge). * **Error Handling:** This is a very basic example. In a real mod, you would want to add error handling and more robust code. * **Permissions:** The `getRequiredPermissionLevel()` method determines who can use the command. `0` means everyone. Higher numbers require operator privileges. **Chinese Translation (Simplified Chinese):** ```java package com.example.helloworld; import net.minecraft.command.CommandBase; import net.minecraft.command.ICommandSender; import net.minecraft.server.MinecraftServer; import net.minecraft.util.ChatComponentText; import net.minecraftforge.fml.common.Mod; import net.minecraftforge.fml.common.event.FMLInitializationEvent; import net.minecraftforge.fml.common.event.FMLServerStartingEvent; @Mod(modid = "helloworld", name = "你好世界模组", version = "1.0") public class HelloWorldMod { @Mod.EventHandler public void init(FMLInitializationEvent event) { System.out.println("你好世界模组正在初始化!"); } @Mod.EventHandler public void serverLoad(FMLServerStartingEvent event) { System.out.println("注册命令!"); event.registerServerCommand(new CommandHello()); } public static class CommandHello extends CommandBase { @Override public String getCommandName() { return "hello"; } @Override public String getCommandUsage(ICommandSender sender) { return "/hello"; } @Override public void processCommand(ICommandSender sender, String[] args) { sender.addChatMessage(new ChatComponentText("你好，世界！")); } @Override public int getRequiredPermissionLevel() { return 0; // 所有人都可以使用这个命令 } } } ``` **Chinese Explanation:** * `你好世界模组 (Nǐ hǎo shìjiè mózǔ)`: Hello World Mod * `你好世界模组正在初始化! (Nǐ hǎo shìjiè mózǔ zhèngzài chūshǐhuà!)`: Hello World Mod is initializing! * `注册命令! (Zhùcè mìnglìng!)`: Registering command! * `你好，世界！ (Nǐ hǎo, shìjiè!)`: Hello, world! * `所有人都可以使用这个命令 (Suǒyǒu rén dōu kěyǐ shǐyòng zhège mìnglìng)`: Everyone can use this command. The Chinese version changes the mod name and the chat message to Chinese. The command name remains "hello" because that's what the player will type. The comments are also translated to Chinese to help understand the code. Remember to save the Java file with UTF-8 encoding to properly display Chinese characters.