@jsprismarine/prismarine/dist/block/BlockMappings.es.js

Dedicated Minecraft Bedrock Edition server written in TypeScript

import { NBTReader, ByteOrder } from '@jsprismarine/nbt';
import * as BedrockData from '@jsprismarine/bedrock-data';
import BinaryStream from '@jsprismarine/jsbinaryutils';
import { gunzipSync } from 'zlib';

class BlockMappings {
  // private static readonly legacyToRuntimeId: Map<number, number> = new Map();
  // private static readonly runtimeIdToLegacy: Map<number, number> = new Map();
  // block name -> runtimeId (will not support states for now :(...)
  static nameToRuntime = /* @__PURE__ */ new Map();
  static runtimeToName = /* @__PURE__ */ new Map();
  static async initMappings(server) {
    try {
      const stream = new BinaryStream(
        gunzipSync(BedrockData.canonical_block_states)
        // Vanilla states
      );
      const reader = new NBTReader(stream, ByteOrder.BIG_ENDIAN);
      for (const blockTag of reader.parseList()) {
        const name = blockTag.getString("name", "minecraft:air");
        const runtimeId = blockTag.getNumber("runtimeId", 0);
        this.registerMapping(name, runtimeId);
      }
    } catch (error) {
      server.getLogger().error("Failed to load block mappings");
      server.getLogger().error(error);
    }
  }
  static reset() {
    this.nameToRuntime.clear();
    this.runtimeToName.clear();
  }
  static registerMapping(name, runtimeId) {
    this.nameToRuntime.set(name, runtimeId);
    this.runtimeToName.set(runtimeId, name);
  }
  static getRuntimeId(name) {
    return name ? this.nameToRuntime.get(name) : 0;
  }
  static getLegacyId(runtimeId) {
    const name = this.runtimeToName.get(runtimeId);
    const legacyId = BedrockData.block_id_map[name];
    return { id: legacyId & 15, meta: 0 };
  }
}

export { BlockMappings };
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