public function payForUnits($unitsToBuy, $army, $city)
{
$prices = ResourceController::getPricesForUnits($army->units, $city);
$unitsToBuy = $this->getBuyCount($army->units, $unitsToBuy);
foreach ($prices as $price) {
foreach ($unitsToBuy as $unit) {
if ($price['id'] == $unit['resource_id']) {
$price->multiplyResource($unit['countToBuy']);
}
}
}
$resource = Resource::find($city->resource->id);
$resource->substractResourceArray($prices);
$resource->save();
}
