wowserhq/wowser

import EventEmitter from 'events';

import Character from './character';
import GamePacket from '../game/packet';
import GameOpcode from '../game/opcode';

class CharacterHandler extends EventEmitter {

  // Creates a new character handler
  constructor(session) {
    super();

    // Holds session
    this.session = session;

    // Initially empty list of characters
    this.list = [];

    // Listen for character list
    this.session.game.on('packet:receive:SMSG_CHAR_ENUM', ::this.handleCharacterList);
  }

  // Requests a fresh list of characters
  refresh() {
    console.info('refreshing character list');

    const gp = new GamePacket(GameOpcode.CMSG_CHAR_ENUM);

    return this.session.game.send(gp);
  }

  // Character list refresh handler (SMSG_CHAR_ENUM)
  handleCharacterList(gp) {
    const count = gp.readByte(); // number of characters

    this.list.length = 0;

    for (let i = 0; i < count; ++i) {
      const character = new Character();

      character.guid = gp.readGUID();
      character.name = gp.readCString();
      character.race = gp.readUnsignedByte();
      character.class = gp.readUnsignedByte();
      character.gender = gp.readUnsignedByte();
      character.bytes = gp.readUnsignedInt();
      character.facial = gp.readUnsignedByte();
      character.level = gp.readUnsignedByte();
      character.zone = gp.readUnsignedInt();
      character.map = gp.readUnsignedInt();
      character.x = gp.readFloat();
      character.y = gp.readFloat();
      character.z = gp.readFloat();
      character.guild = gp.readUnsignedInt();
      character.flags = gp.readUnsignedInt();

      gp.readUnsignedInt(); // character customization
      gp.readUnsignedByte(); // (?)

      const pet = {
        model: gp.readUnsignedInt(),
        level: gp.readUnsignedInt(),
        family: gp.readUnsignedInt()
      };
      if (pet.model) {
        character.pet = pet;
      }

      character.equipment = [];
      for (let j = 0; j < 23; ++j) {
        const item = {
          model: gp.readUnsignedInt(),
          type: gp.readUnsignedByte(),
          enchantment: gp.readUnsignedInt()
        };
        character.equipment.push(item);
      }

      this.list.push(character);
    }

    this.emit('refresh');
  }

}

export default CharacterHandler;