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# Game Mechanics
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Advanced game mechanic integrations including sleep management, fishing, book writing, specialized interactions, and comprehensive gameplay automation for sophisticated bot behavior.
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## Capabilities
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### Sleep and Bed Management
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Manage sleep cycles and bed interactions for health regeneration and time control.
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```typescript { .api }
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/**
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 * Sleep in a bed block
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 * @param bedBlock - Bed block to sleep in
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 * @returns Promise that resolves when sleep action completes
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 */
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sleep(bedBlock: Block): Promise<void>;
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/**
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 * Check if a block is a valid bed
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 * @param bedBlock - Block to check
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 * @returns True if block is a bed
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 */
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isABed(bedBlock: Block): boolean;
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/**
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 * Wake up from sleep
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 * @returns Promise that resolves when wake action completes
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 */
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wake(): Promise<void>;
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```
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**Usage Examples:**
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```typescript
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// Find and sleep in nearest bed
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const bed = bot.findBlock({
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  matching: (block) => bot.isABed(block),
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  maxDistance: 16
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});
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if (bed) {
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  try {
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    await bot.sleep(bed);
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    console.log("Bot is now sleeping");
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    // Wake up after some time
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    setTimeout(async () => {
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      await bot.wake();
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      console.log("Bot woke up");
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    }, 10000);
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  } catch (error) {
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    console.log("Could not sleep:", error.message);
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  }
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}
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// Auto-sleep at night
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bot.on("time", () => {
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  if (!bot.time.isDay && !bot.isSleeping) {
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    const nearbyBed = bot.findBlock({
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      matching: (block) => bot.isABed(block),
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      maxDistance: 20
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    });
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    if (nearbyBed) {
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      bot.sleep(nearbyBed).catch(console.error);
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    }
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  }
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});
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```
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### Fishing System
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Automated fishing with timing and item collection.
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```typescript { .api }
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/**
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 * Start fishing with equipped fishing rod
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 * @returns Promise that resolves when fishing completes (catch or timeout)
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 */
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fish(): Promise<void>;
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/**
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 * Check if bot is currently using held item (like fishing rod)
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 */
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readonly usingHeldItem: boolean;
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```
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**Usage Examples:**
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```typescript
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// Basic fishing
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const fishingRod = bot.inventory.findItem("fishing_rod");
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if (fishingRod) {
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  await bot.equip(fishingRod, "hand");
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  // Look at water
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  const water = bot.findBlock({
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    matching: (block) => block.name === "water",
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    maxDistance: 10
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  });
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  if (water) {
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    await bot.lookAt(water.position);
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    await bot.fish();
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    console.log("Caught something!");
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  }
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}
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// Automated fishing loop
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async function autoFish(duration: number) {
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  const fishingRod = bot.inventory.findItem("fishing_rod");
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  if (!fishingRod) {
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    console.log("No fishing rod found");
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    return;
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  }
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  await bot.equip(fishingRod, "hand");
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  const endTime = Date.now() + duration;
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  let catches = 0;
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  while (Date.now() < endTime) {
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    try {
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      await bot.fish();
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      catches++;
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      console.log(`Caught item #${catches}`);
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      // Brief pause between catches
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      await new Promise(resolve => setTimeout(resolve, 1000));
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    } catch (error) {
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      console.log("Fishing failed:", error.message);
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      break;
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    }
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  }
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  console.log(`Fishing session ended. Total catches: ${catches}`);
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}
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// Auto-fish for 10 minutes
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autoFish(10 * 60 * 1000);
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```
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### Book Writing and Editing
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Write and edit books and written books with custom content.
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```typescript { .api }
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/**
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 * Write content to a book
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 * @param slot - Inventory slot containing the book
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 * @param pages - Array of page contents (strings)
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 * @returns Promise that resolves when writing completes
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 */
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writeBook(slot: number, pages: string[]): Promise<void>;
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```
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**Usage Examples:**
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```typescript
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// Write a simple book
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const book = bot.inventory.findItem("writable_book");
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if (book) {
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  const pages = [
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    "Chapter 1: The Beginning\n\nOnce upon a time, in a world made of blocks...",
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    "Chapter 2: The Adventure\n\nOur hero ventured forth into the dangerous caves...",
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    "Chapter 3: The End\n\nAnd they lived happily ever after.\n\nThe End."
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  ];
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  await bot.writeBook(book.slot, pages);
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  console.log("Book written successfully!");
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}
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// Create a diary entry
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async function writeDiary() {
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  const book = bot.inventory.findItem("writable_book");
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  if (!book) return;
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  const date = new Date().toLocaleDateString();
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  const time = bot.time.timeOfDay;
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  const weather = bot.isRaining ? "raining" : "clear";
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  const pos = bot.entity.position;
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  const diaryEntry = [
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    `Diary Entry - ${date}\n\nTime: ${time}\nWeather: ${weather}\nLocation: ${pos.x.toFixed(1)}, ${pos.y.toFixed(1)}, ${pos.z.toFixed(1)}`,
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    `Today I explored the world and learned many things about survival in Minecraft...`,
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    `Health: ${bot.health}/20\nFood: ${bot.food}/20\n\nUntil tomorrow,\n- Bot`
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  ];
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  await bot.writeBook(book.slot, diaryEntry);
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}
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// Auto-documentation system
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async function documentDiscoveries() {
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  const discoveries: string[] = [];
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  // Track new blocks discovered
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  bot.on("blockUpdate", (oldBlock, newBlock) => {
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    if (newBlock && !oldBlock) {
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      discoveries.push(`Found ${newBlock.name} at ${newBlock.position}`);
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    }
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  });
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  // Track new entities
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  bot.on("entitySpawn", (entity) => {
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    discoveries.push(`Encountered ${entity.type} at ${entity.position}`);
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  });
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  // Write discoveries to book every hour
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  setInterval(async () => {
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    if (discoveries.length > 0) {
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      const book = bot.inventory.findItem("writable_book");
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      if (book) {
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        const pages = [];
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        let currentPage = "Discoveries:\n\n";
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        for (const discovery of discoveries) {
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          if (currentPage.length + discovery.length > 256) {
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            pages.push(currentPage);
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            currentPage = discovery + "\n";
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          } else {
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            currentPage += discovery + "\n";
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          }
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        }
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        if (currentPage.length > 0) {
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          pages.push(currentPage);
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        }
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        await bot.writeBook(book.slot, pages);
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        discoveries.length = 0; // Clear discoveries
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      }
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    }
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  }, 3600000); // Every hour
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}
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```
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### Command Block Management
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Set and configure command blocks for automated server operations.
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```typescript { .api }
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/**
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 * Set a command block with specific command and options
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 * @param pos - Position of the command block
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 * @param command - Command to set
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 * @param options - Command block configuration
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 */
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setCommandBlock(pos: Vec3, command: string, options: CommandBlockOptions): void;
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interface CommandBlockOptions {
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  /** Command block mode (0=impulse, 1=chain, 2=repeat) */
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  mode: number;
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  /** Track command output */
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  trackOutput: boolean;
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  /** Conditional execution */
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  conditional: boolean;
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  /** Always active */
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  alwaysActive: boolean;
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}
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```
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**Usage Examples:**
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```typescript
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// Set up automated farm with command blocks
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const commandBlockPos = new Vec3(100, 64, 200);
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// Set a repeating command block
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bot.setCommandBlock(commandBlockPos, "/say Automated message", {
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  mode: 2,           // Repeat mode
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  trackOutput: true,
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  conditional: false,
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  alwaysActive: true
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});
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// Chain of command blocks for complex automation
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const commands = [
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  "/fill ~1 ~-1 ~1 ~10 ~-1 ~10 minecraft:farmland",
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  "/fill ~1 ~ ~1 ~10 ~ ~10 minecraft:water",
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  "/give @p minecraft:wheat_seeds 64"
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];
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for (let i = 0; i < commands.length; i++) {
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  const pos = commandBlockPos.offset(i, 0, 0);
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  bot.setCommandBlock(pos, commands[i], {
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    mode: i === 0 ? 0 : 1, // First impulse, rest chain
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    trackOutput: true,
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    conditional: false,
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    alwaysActive: false
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  });
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}
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```
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### Trading and Villager Management
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Advanced villager trading with reputation management and trade optimization.
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```typescript { .api }
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/**
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 * Execute a trade with a villager
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 * @param villagerInstance - Open villager trading window
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 * @param tradeIndex - Index of the trade to execute
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 * @param times - Number of times to execute the trade
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 * @returns Promise that resolves when trading completes
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 */
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trade(villagerInstance: Villager, tradeIndex: string | number, times?: number): Promise<void>;
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```
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**Usage Examples:**
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```typescript
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// Optimize trading with multiple villagers
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async function optimizeTrading() {
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  const villagers = Object.values(bot.entities).filter(entity => 
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    entity.name === "villager"
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  );
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  for (const villager of villagers) {
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    try {
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      const villagerWindow = await bot.openVillager(villager);
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      await new Promise<void>(resolve => villagerWindow.on("ready", resolve));
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      // Find best emerald trades
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      const emeraldTrades = villagerWindow.trades.filter(trade => 
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        trade.outputItem.name === "emerald" && !trade.tradeDisabled
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      );
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      for (const trade of emeraldTrades) {
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        const inputCount = bot.inventory.count(trade.inputItem1.type);
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        const maxTrades = Math.min(
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          Math.floor(inputCount / trade.inputItem1.count),
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          trade.maximumNbTradeUses - trade.nbTradeUses
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        );
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        if (maxTrades > 0) {
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          await bot.trade(villagerWindow, villagerWindow.trades.indexOf(trade), maxTrades);
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          console.log(`Traded ${maxTrades} times with villager`);
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        }
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      }
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      villagerWindow.close();
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    } catch (error) {
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      console.log("Trading failed:", error.message);
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    }
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  }
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}
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// Create emerald farm
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async function createEmeraldFarm() {
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  // Find farmer villager
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  const farmer = Object.values(bot.entities).find(entity =>
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    entity.name === "villager" && entity.metadata[13] === 0
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  );
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  if (!farmer) return;
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  // Plant crops nearby
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  const farmArea = bot.findBlocks({
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    matching: (block) => block.name === "farmland",
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    maxDistance: 20,
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    count: 100
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  });
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  const seeds = bot.inventory.items().filter(item => 
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    item.name.includes("seeds") || item.name === "carrot" || item.name === "potato"
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  );
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  for (const seedType of seeds) {
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    for (const farmPos of farmArea) {
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      const airBlock = bot.blockAt(farmPos.offset(0, 1, 0));
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      if (airBlock && airBlock.type === 0) {
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        await bot.equip(seedType, "hand");
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        await bot.placeBlock(bot.blockAt(farmPos)!, new Vec3(0, 1, 0));
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        break;
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      }
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    }
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  }
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  console.log("Farm planted for emerald trading");
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}
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```
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### Advanced Game State Management
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Monitor and react to various game state changes and environmental conditions.
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```typescript { .api }
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interface Bot {
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  /** Whether bot is currently sleeping */
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  isSleeping: boolean;
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  /** Current weather state */
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  isRaining: boolean;
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  /** Thunder state */
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  thunderState: number;
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  /** Game time information */
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  time: Time;
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  /** Current experience */
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  experience: Experience;
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}
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interface Time {
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  /** Whether daylight cycle is enabled */
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  doDaylightCycle: boolean;
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  /** Full time value as BigInt */
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  bigTime: BigInt;
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  /** Time in ticks */
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  time: number;
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  /** Time of day (0-24000) */
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  timeOfDay: number;
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  /** Current day number */
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  day: number;
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  /** Whether it's daytime */
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  isDay: boolean;
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  /** Moon phase (0-7) */
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  moonPhase: number;
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  /** World age as BigInt */
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  bigAge: BigInt;
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  /** World age in ticks */
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  age: number;
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}
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interface Experience {
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  /** Experience level */
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  level: number;
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  /** Total experience points */
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  points: number;
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  /** Progress to next level (0-1) */
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  progress: number;
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}
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```
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### Game Events and Reactions
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React to various game events and environmental changes.
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```typescript { .api }
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interface BotEvents {
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  /** Sleep state changed */
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  sleep(): void;
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  wake(): void;
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  /** Weather events */
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  rain(): void;
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  /** Time events */
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  time(): void;
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  /** Experience gained */
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  experience(): void;
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  /** Death and respawn */
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  death(): void;
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  respawn(): void;
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  /** Health and status */
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  health(): void;
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  breath(): void;
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  /** Firework usage */
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  usedFirework(): void;
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  /** Spawn point changes */
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  spawnReset(): void;
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}
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```
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**Usage Examples:**
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```typescript
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// React to weather changes
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bot.on("rain", () => {
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  if (bot.isRaining) {
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    console.log("It started raining, seeking shelter");
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    const shelter = bot.findBlock({
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      matching: (block) => block.name.includes("roof") || block.name.includes("house"),
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      maxDistance: 50
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    });
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    if (shelter) {
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      // Move to shelter logic here
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    }
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  } else {
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    console.log("Rain stopped, can go outside");
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  }
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});
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// Time-based behavior
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bot.on("time", () => {
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  const timeOfDay = bot.time.timeOfDay;
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  if (timeOfDay === 0) {
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    console.log("New day started!");
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  } else if (timeOfDay === 12000) {
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    console.log("Nighttime, being cautious");
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    // Enable defensive behavior
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  } else if (timeOfDay === 23000) {
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    console.log("Almost dawn, preparing for day");
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  }
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});
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// Experience tracking
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bot.on("experience", () => {
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  console.log(`Level: ${bot.experience.level}, XP: ${bot.experience.points}`);
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  if (bot.experience.level % 5 === 0) {
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    bot.chat(`Reached level ${bot.experience.level}!`);
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  }
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});
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// Health monitoring
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bot.on("health", () => {
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  if (bot.health < 6) {
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    console.log("Low health! Seeking food and safety");
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    // Find food
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    const food = bot.inventory.items().find(item => 
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      ["bread", "apple", "cooked_beef", "golden_apple"].includes(item.name)
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    );
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    if (food) {
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      bot.equip(food, "hand").then(() => bot.consume()).catch(console.error);
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    }
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  }
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});
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// Auto-respawn system
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bot.on("death", () => {
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  console.log("Bot died, respawning soon...");
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});
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bot.on("respawn", () => {
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  console.log("Bot respawned");
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  // Return to last known safe location
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  const safeLocation = new Vec3(0, 64, 0); // Spawn area
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  // Navigation logic here
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});
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// Comprehensive game state monitor
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function monitorGameState() {
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  setInterval(() => {
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    const status = {
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      health: bot.health,
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      food: bot.food,
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      level: bot.experience.level,
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      time: bot.time.timeOfDay,
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      weather: bot.isRaining ? "rain" : "clear",
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      position: bot.entity.position,
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      dimension: bot.game.dimension
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    };
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    console.log("Bot Status:", JSON.stringify(status, null, 2));
553
  }, 60000); // Every minute
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}
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monitorGameState();
557
```