private function calculateCost(Card $card, $type)
{
if ($type == 'play') {
// check for duplicates
foreach ($this->cardsPlayed as $cardPlayed) {
if ($cardPlayed->getName() == $card->getName()) {
return array();
}
}
// check if it's a prerequisite for being free
foreach ($this->cardsPlayed as $cardPlayed) {
if ($card->hasPrereq($cardPlayed)) {
return array(array());
}
}
$required = $card->getResourceCost();
} else {
// $type == 'wonder'
// Can't over-build the wonder
if ($this->wonderStage == count($this->wonder['stages'])) {
return array();
}
$stage = $this->wonder['stages'][$this->wonderStage];
$required = $stage['requirements'];
}
// Otherwise, we're going to have to pay for this card somehow
$have = array();
// We get all our resources for free
foreach ($this->permResources as $resource) {
$have[] = ResourceOption::me($resource);
}
// Add in all the left player's resources, factoring in discounts
foreach ($this->leftPlayer->permResources as $resource) {
if (!$resource->buyable()) {
continue;
}
$have[] = ResourceOption::left($resource, $resource->discount($this->discounts['left']));
}
// Add in all the right player's resources, factoring discounts
foreach ($this->rightPlayer->permResources as $resource) {
if (!$resource->buyable()) {
continue;
}
$have[] = ResourceOption::right($resource, $resource->discount($this->discounts['right']));
}
// Figure out how we can pay neighbors to satisfy our requirements
$possible = Resource::satisfy($required, $have, $this->coins - $card->getMoneyCost());
return $possible;
}
