72 lines
2.0 KiB
PHP
72 lines
2.0 KiB
PHP
<?php
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require_once "OpenEndedTask.php";
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require_once "class/LogicFunction.php";
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require_once "class/Utils.php";
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class TruthTableTask extends PicturedTask
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{
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private LogicFunction $lf; // logic functions
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private string $output_variable; // output variable
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public function __construct(array $a = null)
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{
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parent::__construct("truthtable", $a);
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if (isset($a["function"])) { // fetching from a JSON-stored object
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$this->lf = LogicFunction::fromArray($a["function"]);
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} else if (isset($a["expression"], $a["input_variables"])) { // building from the scratch
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$this->lf = new LogicFunction($a["expression"], $a["input_variables"]);
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} else {
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$this->lf = new LogicFunction();
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}
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$this->setOutputVariable($a["output_variable"] ?? "f");
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}
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public function staticCheck(): void
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{
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$ans_tt = $this->player_answer;
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$cans_tt = $this->lf->getTruthTable();
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$errs = 0;
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for ($i = 0; $i < $this->lf->getNStates(); $i++) {
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if (($ans_tt[$i] ?? " ") != $cans_tt[$i]) {
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$errs++;
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}
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}
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$mark = ($errs === 0) ? 1.0 : 0.0;
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$this->setMark($mark);
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}
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public function setOutputVariable(string $ovar): void {
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$this->output_variable = $ovar;
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}
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public function getOutputVariable(): string {
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return $this->output_variable;
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}
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public function setLogicFunction(LogicFunction $lf): void {
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$this->lf = $lf;
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}
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public function getLogicFunction(): LogicFunction {
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return $this->lf;
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}
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public function toArray(string $mode = "all"): array
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{
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$a = parent::toArray($mode);
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if ($mode === "all") {
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$a["function"] = $this->lf->toArray();
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}
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$a["correct_answer"] = $this->lf->getTruthTable();
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$a["input_variables"] = $this->lf->getInputVars();
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$a["output_variable"] = $this->output_variable;
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return $a;
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}
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} |