マイクラから現実世界に干渉してみる その１準備編【マインクラフト】

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

const BRIDGE_PREFIX = "__WS_BRIDGE_DATA__";

world.afterEvents.buttonPush.subscribe((event) => {
	const data = JSON.stringify({
		type: "button_push",
		blockType: event.block.typeId,
		location: event.block.location,
	});

	event.source.runCommand(`say ${BRIDGE_PREFIX}${data}`);
});

system.afterEvents.scriptEventReceive.subscribe((event) => {
	if (event.id !== "bridge:server") {
		return;
	}

	world.sendMessage(
		BRIDGE_PREFIX +
		JSON.stringify({
			type: "server_command_received",
			message: event.message,
		}),
	);
});

import { Server, ServerEvent } from "socket-be";

const BRIDGE_PREFIX = "__WS_BRIDGE_DATA__";
const server = new Server({ port: 8765 });

server.on(ServerEvent.Open, () => {
  console.log("WebSocket server: localhost:8765");
  console.log("connect command: /wsserver localhost:8765");
});

server.on(ServerEvent.PlayerMessage, async (event) => {
  const prefixIndex = event.message.indexOf(BRIDGE_PREFIX);

  const { message, world } = event;
  console.log(message);
  console.log(message.startsWith(BRIDGE_PREFIX));
  console.log(prefixIndex);
  if (prefixIndex === -1) {
    return;
  }

  const data = event.message.slice(prefixIndex + BRIDGE_PREFIX.length);
  console.log("Addon -> Server:", data);

  if (message === "bridge-test") {
    await world.runCommand("scriptevent bridge:server hello-from-node-server");
    console.log("Server -> Addon: hello-from-node-server");
  }
});

マイクラ内でボタンを押す
↓
/say ${BRIDGE_PREFIX}${data} が発動して発言
↓
サーバーのイベントで拾う
↓
文字列照合して /scriptevent bridge:server hello-from-node-server の実行要求を返す
↓
スクリプトAPIでworld.sendMessage()が実行されてメッセージが表示される