@Override
    public boolean equals(Object obj) {
        if (obj == null) {
            return false;
        }
        if (getClass() != obj.getClass()) {
            return false;
        }
        final TerrainObject other = (TerrainObject) obj;
        if (Double.doubleToLongBits(this.explored) != Double.doubleToLongBits(other.explored)) {
            return false;
        }
        if (!Objects.equals(this.type, other.type)) {
            return false;
        }
        if (!Objects.equals(this.description, other.description)) {
            return false;
        }
        if (!Objects.equals(this.symbol, other.symbol)) {
            return false;
        }
        if (Double.doubleToLongBits(this.travelTime) != Double.doubleToLongBits(other.travelTime)) {
            return false;
        }
        return true;
    }