public function setNewPuzzlePiece( puzzlePieceObserver $observer , $seed = false ) {
$requiredBridges = $observer->getRequiredBridges();
$possiblePatterns = array();
// TODO loop through patterns with appropriate bridge count
// add viable patterns to $possiblePatterns
// randomly choose viable pattern from $possiblePatterns
// create new puzzlePiece from chosen viable pattern
// insert puzzlePiece into $observer
return $observer;
}
protected function setRandomPuzzlePiece(puzzlePieceObserver $observer)
{
if ($observer->getPieceType() === 'nullPuzzlePiece') {
$requiredBridges = $observer->getRequiredBridges();
$possiblePatterns = array();
for ($a = $requiredBridges['required']; $a <= $requiredBridges['optional']; $a += 1) {
if (isset($this->bridgePatterns[$a])) {
if ($count($this->bridgePatterns[$a]) === 1) {
if ($this->bridgePatterns[$a][0]->isUsable($requiredBridges['bridges'])) {
$possiblePatterns[] = $this->bridgePatterns[$a][0];
}
}
} else {
foreach ($this->bridgePatterns[$a] as $pattern) {
if ($pattern->isUsable($requiredBridges['bridges'])) {
$possiblePatterns[] = $pattern;
}
}
}
}
if (count($possiblePatterns) === 0) {
$usePattern = $possiblePatterns[0];
} else {
$key = mt_rand(0, count($possiblePatterns) - 1);
$usePattern = $possiblePatterns[$key];
}
if ($usePattern->getBridgeCount() === 0) {
$piece = $this->blankPuzzlePiece;
} else {
$piece = new puzzlePiece($usePattern);
}
$observer->setPuzzlePiece($piece);
$this->{$this->mode}($observer);
}
}