silphius/app/net/client.js

import {CLIENT_LATENCY, CLIENT_PREDICTION} from '@/util/constants.js';
import EventEmitter from '@/util/event-emitter.js';

export default class Client {
  emitter = new EventEmitter();
  rtt = 0;
  throughput = {$$down: 0, down: 0, $$up: 0, up: 0};
  constructor() {
    setInterval(() => {
      const {throughput} = this;
      throughput.down = throughput.$$down * 4;
      throughput.up = throughput.$$up * 4;
      throughput.$$down = throughput.$$up = 0;
    }, 250);
  }
  accept(packet) {
    if ('Heartbeat' === packet.type) {
      this.rtt = packet.payload.rtt;
      this.send(packet);
      return;
    }
    this.emitter.invoke(packet.type, packet.payload);
  }
  addPacketListener(type, listener) {
    this.emitter.addListener(type, listener);
  }
  removePacketListener(type, listener) {
    this.emitter.removeListener(type, listener);
  }
  send(packet) {
    if (CLIENT_LATENCY > 0 && !CLIENT_PREDICTION) {
      setTimeout(() => {
        this.transmit(packet);
      }, CLIENT_LATENCY);
    }
    else {
      this.transmit(packet);
    }
  }
}