Discover Awesome MCP Servers

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mcp-opencollective

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Tiramisu AI MCP Server

A read-only MCP server that exposes Tiramisu AI's product information, pricing, and official links to MCP-compatible AI clients.

GammaRips Options Intelligence

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A Simple MCP Server and Client

Okay, here's a simple example of an MCP (Minecraft Coder Pack) setup with a basic client and server, translated to Japanese. This focuses on the core structure and communication. Keep in mind that a *real* MCP setup is much more complex, but this illustrates the fundamental concepts. **Explanation:** This example demonstrates a very basic mod that: * **Client:** Sends a simple message to the server when the game starts. * **Server:** Receives the message and logs it. **Important Notes:** * **MCP Setup:** This assumes you have a working MCP development environment set up. This is a prerequisite. I won't cover the MCP setup process itself, as it's quite involved. Refer to the official MCP documentation for that. * **Simplified:** This is a *highly* simplified example. Real mods do much more. * **Minecraft Version:** The code will need to be adapted to the specific Minecraft version you are using with MCP. The imports and class names might change. * **Networking:** This uses a very basic networking approach. More robust mods use more sophisticated networking protocols. * **Gradle:** This assumes you are using Gradle for your build system, which is standard for MCP. **Code (English with Japanese Translation):** **1. Client-Side (src/main/java/com/example/mod/ClientProxy.java):** ```java package com.example.mod; import net.minecraftforge.fml.common.event.FMLInitializationEvent; import net.minecraftforge.fml.common.network.NetworkRegistry; import net.minecraftforge.fml.common.network.simpleimpl.SimpleNetworkWrapper; import net.minecraftforge.fml.relauncher.Side; public class ClientProxy extends CommonProxy { @Override public void init(FMLInitializationEvent event) { super.init(event); // Register the network channel on the client side. ModExample.network = NetworkRegistry.INSTANCE.newSimpleChannel(ModExample.MODID); ModExample.network.registerMessage(MessageHandler.class, Message.class, 0, Side.SERVER); // Send a message to the server when the game starts. ModExample.network.sendToServer(new Message("Hello from the client!")); } } ``` **Japanese Translation:** ```java package com.example.mod; import net.minecraftforge.fml.common.event.FMLInitializationEvent; import net.minecraftforge.fml.common.network.NetworkRegistry; import net.minecraftforge.fml.common.network.simpleimpl.SimpleNetworkWrapper; import net.minecraftforge.fml.relauncher.Side; public class ClientProxy extends CommonProxy { @Override public void init(FMLInitializationEvent event) { super.init(event); // クライアント側でネットワークチャネルを登録します。 ModExample.network = NetworkRegistry.INSTANCE.newSimpleChannel(ModExample.MODID); ModExample.network.registerMessage(MessageHandler.class, Message.class, 0, Side.SERVER); // ゲーム開始時にサーバーにメッセージを送信します。 ModExample.network.sendToServer(new Message("クライアントからこんにちは！")); } } ``` **2. Server-Side (src/main/java/com/example/mod/ServerProxy.java):** ```java package com.example.mod; import net.minecraftforge.fml.common.event.FMLInitializationEvent; import net.minecraftforge.fml.common.network.NetworkRegistry; import net.minecraftforge.fml.common.network.simpleimpl.SimpleNetworkWrapper; import net.minecraftforge.fml.relauncher.Side; public class ServerProxy extends CommonProxy { @Override public void init(FMLInitializationEvent event) { super.init(event); // Register the network channel on the server side. ModExample.network = NetworkRegistry.INSTANCE.newSimpleChannel(ModExample.MODID); ModExample.network.registerMessage(MessageHandler.class, Message.class, 0, Side.CLIENT); //Important to register the message handler on the client side as well. } } ``` **Japanese Translation:** ```java package com.example.mod; import net.minecraftforge.fml.common.event.FMLInitializationEvent; import net.minecraftforge.fml.common.network.NetworkRegistry; import net.minecraftforge.fml.common.network.simpleimpl.SimpleNetworkWrapper; import net.minecraftforge.fml.relauncher.Side; public class ServerProxy extends CommonProxy { @Override public void init(FMLInitializationEvent event) { super.init(event); // サーバー側でネットワークチャネルを登録します。 ModExample.network = NetworkRegistry.INSTANCE.newSimpleChannel(ModExample.MODID); ModExample.network.registerMessage(MessageHandler.class, Message.class, 0, Side.CLIENT); //クライアント側でもメッセージハンドラを登録することが重要です。 } } ``` **3. Common Proxy (src/main/java/com/example/mod/CommonProxy.java):** ```java package com.example.mod; import net.minecraftforge.fml.common.event.FMLInitializationEvent; import net.minecraftforge.fml.common.event.FMLPostInitializationEvent; import net.minecraftforge.fml.common.event.FMLPreInitializationEvent; public class CommonProxy { public void preInit(FMLPreInitializationEvent event) { } public void init(FMLInitializationEvent event) { } public void postInit(FMLPostInitializationEvent event) { } } ``` **Japanese Translation:** ```java package com.example.mod; import net.minecraftforge.fml.common.event.FMLInitializationEvent; import net.minecraftforge.fml.common.event.FMLPostInitializationEvent; import net.minecraftforge.fml.common.event.FMLPreInitializationEvent; public class CommonProxy { public void preInit(FMLPreInitializationEvent event) { } public void init(FMLInitializationEvent event) { } public void postInit(FMLPostInitializationEvent event) { } } ``` **4. Main Mod Class (src/main/java/com/example/mod/ModExample.java):** ```java package com.example.mod; import net.minecraftforge.fml.common.Mod; import net.minecraftforge.fml.common.Mod.EventHandler; import net.minecraftforge.fml.common.SidedProxy; import net.minecraftforge.fml.common.event.FMLInitializationEvent; import net.minecraftforge.fml.common.event.FMLPreInitializationEvent; import net.minecraftforge.fml.common.network.simpleimpl.SimpleNetworkWrapper; import org.apache.logging.log4j.Logger; @Mod(modid = ModExample.MODID, name = ModExample.NAME, version = ModExample.VERSION) public class ModExample { public static final String MODID = "modexample"; public static final String NAME = "Mod Example"; public static final String VERSION = "1.0"; private static Logger logger; @SidedProxy(clientSide = "com.example.mod.ClientProxy", serverSide = "com.example.mod.ServerProxy") public static CommonProxy proxy; public static SimpleNetworkWrapper network; @EventHandler public void preInit(FMLPreInitializationEvent event) { logger = event.getModLog(); proxy.preInit(event); } @EventHandler public void init(FMLInitializationEvent event) { proxy.init(event); } } ``` **Japanese Translation:** ```java package com.example.mod; import net.minecraftforge.fml.common.Mod; import net.minecraftforge.fml.common.Mod.EventHandler; import net.minecraftforge.fml.common.SidedProxy; import net.minecraftforge.fml.common.event.FMLInitializationEvent; import net.minecraftforge.fml.common.event.FMLPreInitializationEvent; import net.minecraftforge.fml.common.network.simpleimpl.SimpleNetworkWrapper; import org.apache.logging.log4j.Logger; @Mod(modid = ModExample.MODID, name = ModExample.NAME, version = ModExample.VERSION) public class ModExample { public static final String MODID = "modexample"; public static final String NAME = "Mod Example"; public static final String VERSION = "1.0"; private static Logger logger; @SidedProxy(clientSide = "com.example.mod.ClientProxy", serverSide = "com.example.mod.ServerProxy") public static CommonProxy proxy; public static SimpleNetworkWrapper network; @EventHandler public void preInit(FMLPreInitializationEvent event) { logger = event.getModLog(); proxy.preInit(event); } @EventHandler public void init(FMLInitializationEvent event) { proxy.init(event); } } ``` **5. Message Class (src/main/java/com/example/mod/Message.java):** ```java package com.example.mod; import io.netty.buffer.ByteBuf; import net.minecraftforge.fml.common.network.simpleimpl.IMessage; public class Message implements IMessage { private String message; public Message() { // Required for reflection. } public Message(String message) { this.message = message; } public String getMessage() { return message; } @Override public void fromBytes(ByteBuf buf) { message = buf.readCharSequence(buf.readableBytes(), java.nio.charset.StandardCharsets.UTF_8).toString(); } @Override public void toBytes(ByteBuf buf) { buf.writeCharSequence(message, java.nio.charset.StandardCharsets.UTF_8); } } ``` **Japanese Translation:** ```java package com.example.mod; import io.netty.buffer.ByteBuf; import net.minecraftforge.fml.common.network.simpleimpl.IMessage; public class Message implements IMessage { private String message; public Message() { // リフレクションのために必要です。 } public Message(String message) { this.message = message; } public String getMessage() { return message; } @Override public void fromBytes(ByteBuf buf) { message = buf.readCharSequence(buf.readableBytes(), java.nio.charset.StandardCharsets.UTF_8).toString(); } @Override public void toBytes(ByteBuf buf) { buf.writeCharSequence(message, java.nio.charset.StandardCharsets.UTF_8); } } ``` **6. Message Handler (src/main/java/com/example/mod/MessageHandler.java):** ```java package com.example.mod; import net.minecraftforge.fml.common.network.simpleimpl.IMessage; import net.minecraftforge.fml.common.network.simpleimpl.IMessageHandler; import net.minecraftforge.fml.common.network.simpleimpl.MessageContext; import org.apache.logging.log4j.LogManager; import org.apache.logging.log4j.Logger; public class MessageHandler implements IMessageHandler<Message, IMessage> { private static final Logger LOGGER = LogManager.getLogger(); @Override public IMessage onMessage(Message message, MessageContext ctx) { // Log the message received on the server. LOGGER.info("Received message from client: " + message.getMessage()); return null; } } ``` **Japanese Translation:** ```java package com.example.mod; import net.minecraftforge.fml.common.network.simpleimpl.IMessage; import net.minecraftforge.fml.common.network.simpleimpl.IMessageHandler; import net.minecraftforge.fml.common.network.simpleimpl.MessageContext; import org.apache.logging.log4j.LogManager; import org.apache.logging.log4j.Logger; public class MessageHandler implements IMessageHandler<Message, IMessage> { private static final Logger LOGGER = LogManager.getLogger(); @Override public IMessage onMessage(Message message, MessageContext ctx) { // サーバーで受信したメッセージをログに記録します。 LOGGER.info("クライアントからメッセージを受信しました: " + message.getMessage()); return null; } } ``` **7. `build.gradle` (Example - Adjust to your MCP setup):** ```gradle buildscript { repositories { mavenCentral() maven { name = "forge" url = "http://files.minecraftforge.net/maven" } maven { name = "sonatype" url = "https://oss.sonatype.org/content/repositories/snapshots/" } } dependencies { classpath 'net.minecraftforge.gradle:ForgeGradle:2.3-SNAPSHOT' } } apply plugin: 'net.minecraftforge.gradle.forge' version = "1.0" group = "com.example.mod" // Replace with your group ID archivesBaseName = "modexample" sourceCompatibility = targetCompatibility = "1.8" // Or your target Java version compileJava { sourceCompatibility = targetCompatibility = "1.8" } minecraft { version = "1.12.2-14.23.5.2854" // Replace with your Minecraft version runDir = "run" mappings = "stable_39" // Replace with your mappings version } dependencies { // Add any dependencies here } jar { manifest { attributes 'FMLCorePlugin': 'com.example.mod.core.ModCorePlugin' } } reobf { mappingsType = 'MCP' srgFile = minecraft.getSrgFile() } ``` **Japanese Explanation of `build.gradle`:** ```gradle buildscript { repositories { mavenCentral() maven { name = "forge" url = "http://files.minecraftforge.net/maven" } maven { name = "sonatype" url = "https://oss.sonatype.org/content/repositories/snapshots/" } } dependencies { classpath 'net.minecraftforge.gradle:ForgeGradle:2.3-SNAPSHOT' } } apply plugin: 'net.minecraftforge.gradle.forge' version = "1.0" // バージョン group = "com.example.mod" // グループID (あなたのパッケージ名) archivesBaseName = "modexample" // アーカイブ名 (modファイルの名前) sourceCompatibility = targetCompatibility = "1.8" // Javaのバージョン compileJava { sourceCompatibility = targetCompatibility = "1.8" } minecraft { version = "1.12.2-14.23.5.2854" // Minecraftのバージョン runDir = "run" // 実行ディレクトリ mappings = "stable_39" // マッピングバージョン } dependencies { // ここに依存関係を追加 } jar { manifest { attributes 'FMLCorePlugin': 'com.example.mod.core.ModCorePlugin' } } reobf { mappingsType = 'MCP' srgFile = minecraft.getSrgFile() } ``` **Explanation of the Code:** * **`ModExample.java`:** This is the main mod class. It's annotated with `@Mod` to tell Forge that this is a mod. It also handles the proxy setup. * **`ClientProxy.java` and `ServerProxy.java`:** These classes handle client-side and server-side specific logic. The `@SidedProxy` annotation in `ModExample.java` tells Forge which proxy to use on each side. The network channel is registered here. * **`CommonProxy.java`:** This class contains code that is common to both the client and the server. * **`Message.java`:** This class defines the message that will be sent between the client and the server. It implements `IMessage` and provides methods for serializing and deserializing the message data. * **`MessageHandler.java`:** This class handles the message when it is received. It implements `IMessageHandler` and provides the `onMessage` method, which is called when a message is received. * **`build.gradle`:** This file configures the Gradle build system. It specifies the Minecraft version, the mappings version, and any dependencies that the mod needs. **How to Use:** 1. **Set up your MCP environment.** 2. **Create the directory structure:** `src/main/java/com/example/mod/` 3. **Copy the code** into the appropriate files. 4. **Modify `build.gradle`** to match your Minecraft version and mappings. Change the `group` to your desired package name. 5. **Run Gradle tasks:** * `gradlew build` (to build the mod) * `gradlew runClient` (to run the client with the mod) **What to Expect:** When you run the client, you should see the message "Received message from client: Hello from the client!" (or the Japanese equivalent) in the server console. This indicates that the client successfully sent a message to the server. **Important Considerations:** * **Error Handling:** This example lacks proper error handling. In a real mod, you should handle potential exceptions and errors gracefully. * **Threading:** Minecraft is heavily threaded. Be careful when accessing Minecraft objects from different threads. Use `Minecraft.getMinecraft().addScheduledTask()` to execute code on the main thread. * **Synchronization:** If you are modifying shared data from multiple threads, you will need to use synchronization mechanisms (e.g., locks) to prevent race conditions. * **Configuration:** Consider adding a configuration file to allow users to customize the mod's behavior. * **More Complex Networking:** For more complex data transfer, consider using more advanced networking techniques, such as custom packets with more data fields. This is a starting point. You can expand upon this example to create more complex and interesting mods. Remember to consult the official Forge and MCP documentation for more information. Good luck!

codeix

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