Method push

src/message-queue.js:59–73

(param = {})

  }

  push(param = {}) {
    const barColor = param.color || COLOR.blue;
    const barSpace = param.space || 0;

    if (this._queue.length >= this._maxQueueCapacity) {
      this.pop();
    }

    this._queue.push({
      x: this._arcWidth + barSpace,
      y: this._viewHeight + this._barHeight,
      color: barColor,
      space: barSpace
    });
  }

  pop() {
    if (this._queue.length > 0) {