minecraft-aiworld/lobby-addon/lobby_transfer_BP/scripts/main.js

import { world, system } from "@minecraft/server";
import { transferPlayer } from "@minecraft/server-admin";

// Portal definitions: name, center position, color, and direct transfer target
const portals = [
  { name: "Jamie's World", x: -15, y: 65, z: -24, host: "10.0.0.247", port: 19133, color: "§a" },
  { name: "Lyla's World",  x: 0,   y: 65, z: -24, host: "10.0.0.247", port: 19134, color: "§d" },
  { name: "Mya's World",   x: 15,  y: 65, z: -24, host: "10.0.0.247", port: 19135, color: "§b" },
];

const PORTAL_RADIUS_X = 2.5;
const PORTAL_RADIUS_Z = 2.0;
const PORTAL_RADIUS_Y = 2.0;
const COOLDOWN_TICKS = 100; // 5 seconds cooldown
const SPAWN_PROTECTION_TICKS = 200; // 10 seconds — ignore portal detection after spawn

// Track cooldowns per player
const cooldowns = new Map();
// Track when players spawned (to prevent transfer loop on arrival)
const spawnTicks = new Map();

world.afterEvents.playerSpawn.subscribe((event) => {
  spawnTicks.set(event.player.id, system.currentTick);
});

system.runInterval(() => {
  for (const player of world.getAllPlayers()) {
    const pos = player.location;
    const playerId = player.id;

    // Check cooldown
    const lastTransfer = cooldowns.get(playerId) || 0;
    if (system.currentTick - lastTransfer < COOLDOWN_TICKS) continue;

    // Skip if player just spawned (prevents loop when arriving from child world)
    const spawnedAt = spawnTicks.get(playerId) || 0;
    if (system.currentTick - spawnedAt < SPAWN_PROTECTION_TICKS) continue;

    for (const portal of portals) {
      const dx = Math.abs(pos.x - portal.x);
      const dy = Math.abs(pos.y - portal.y);
      const dz = Math.abs(pos.z - portal.z);

      if (dx < PORTAL_RADIUS_X && dy < PORTAL_RADIUS_Y && dz < PORTAL_RADIUS_Z) {
        cooldowns.set(playerId, system.currentTick);
        // Show title notification
        player.runCommand(`titleraw @s title {"rawtext":[{"text":"${portal.color}${portal.name}"}]}`);
        player.runCommand(`titleraw @s subtitle {"rawtext":[{"text":"§7Transferring..."}]}`);
        player.sendMessage(`§6Transferring to ${portal.name}...`);
        try {
          transferPlayer(player, { hostname: portal.host, port: portal.port });
        } catch (e) {
          player.sendMessage(`§cTransfer failed: ${e.message}`);
        }
        break;
      }
    }
  }
}, 10); // Check every half second

// Clean up tracking when players leave
world.afterEvents.playerLeave.subscribe((event) => {
  cooldowns.delete(event.playerId);
  spawnTicks.delete(event.playerId);
});

// ─── Place signs above each portal on load ──────────────────────

function placePortalSigns() {
  const overworld = world.getDimension("overworld");
  const signs = [
    { x: -15, y: 70, z: -23, name: "Jamie's", color: "§a" },
    { x: 0,   y: 70, z: -23, name: "Lyla's",  color: "§d" },
    { x: 15,  y: 70, z: -23, name: "Mya's",   color: "§b" },
  ];

  for (const sign of signs) {
    try {
      // Place wall sign facing south (toward players approaching from +Z)
      overworld.runCommand(`setblock ${sign.x} ${sign.y} ${sign.z} oak_wall_sign ["facing_direction":3]`);
    } catch (e) {
      // Non-fatal — chunks may not be loaded
    }
  }

  // Delay to let sign blocks register, then write text
  system.runTimeout(() => {
    for (const sign of signs) {
      try {
        const block = overworld.getBlock({ x: sign.x, y: sign.y, z: sign.z });
        if (!block) continue;
        const signComponent = block.getComponent("minecraft:sign");
        if (!signComponent) continue;
        signComponent.setText(`${sign.color}${sign.name}\n${sign.color}World\n§7▼ Step in ▼`);
      } catch (e) {
        // Non-fatal
      }
    }
  }, 10);
}

system.runTimeout(() => {
  placePortalSigns();
}, 40);

system.run(() => {
  world.sendMessage("§6[Hub] §7Portal transfer system loaded!");
});