game.md

Rock-Paper-Scissors-Spock-Lizard

http://bigbangtheory.wikia.com/wiki/Rock_Paper_Scissors_Lizard_Spock

This is an expansion of the classic Rock-Paper-Scissors game, which adds "Spock" and "lizard" to the standard three choices.

The rules are:

• Scissors cuts Paper
• Paper covers Rock
• Rock crushes Lizard
• Lizard poisons Spock
• Spock smashes Scissors
• Scissors decapitates Lizard
• Lizard eats Paper
• Paper disproves Spock
• Spock vaporizes Rock
• Rock crushes scissors

You now should create a PHP version of this game where two players can use one of the five weapons. It then should display the outcome, eg: "Scissors cuts Paper", and say what player won the round.

Nice to have:

• Interactive weapon choice using CLI
• Test cases

game.php

<?php

function play($weapon1, $weapon2) {
    $weapons = [
        ['Scissors', 'cuts' , 'Paper'],
        ['Paper', 'covers', 'Rock'],
        ['Rock', 'crushes', 'Lizard'],
        ['Lizard', 'poisons', 'Spock'],
        ['Spock', 'smashes', 'Scissors'],
        ['Scissors', 'decapitates', 'Lizard'],
        ['Lizard', 'eats', 'Paper'],
        ['Paper', 'disproves', 'Spock'],
        ['Spock', 'vaporizes', 'Rock'],
        ['Rock', 'crushes', 'Scissors']
    ];

    $match = false;
    foreach ($weapons as $weapon) {
        if ($weapon1 == $weapon[0] && $weapon2 == $weapon[2]) {
            $message = "Player 1 wins: {$weapon1} {$weapon[1]} {$weapon2}";
            $match = true;
        }

        if ($weapon2 == $weapon[0] && $weapon1 == $weapon[2]) {
            $message = "Player 2 wins: {$weapon2} {$weapon[1]} {$weapon1}";
            $match = true;
        }
    }

    if (!$match) {
        $message = 'Incompatible Game';
    }
    return $message;
}

/*The rules are:
- Scissors cuts Paper
- Paper covers Rock
- Rock crushes Lizard
- Lizard poisons Spock
- Spock smashes Scissors
- Scissors decapitates Lizard
- Lizard eats Paper
- Paper disproves Spock
- Spock vaporizes Rock
- Rock crushes scissors*/

$games = [
    ['Scissors', 'Paper', 'Player 1 wins: Scissors cuts Paper'],
    ['Paper', 'Scissors', 'Player 2 wins: Scissors cuts Paper'],
    ['Paper', 'Rock', 'Player 1 wins: Paper covers Rock'],
    ['Spock', 'Scissors', 'Player 1 wins: Spock smashes Scissors'],
    ['Scissors', 'Rock', 'Player 2 wins: Rock crushes Scissors'],
    ['Spock', 'Rock', 'Player 1 wins: Spock vaporizes Rock'],
    ['Rock', 'Spock', 'Player 2 wins: Spock vaporizes Rock'],
    ['Lizard', 'Scis', 'Incompatible Game'],
];

foreach ($games as $game) {

    $player1 = $game[0];
    $player2 = $game[1];
    $phrase = $game[2];
    $outcome = play($player1, $player2);

    if ($outcome != $phrase) {
        echo "Fail...." . "Expected: '{$phrase}', got '{$outcome}'";
        echo PHP_EOL;
    } else {
        echo 'Pass';
        echo PHP_EOL;
    }
}