<?php
// Command-line interface simulation
function processCommand($command) {
    $parts = explode(' ', $command);
    $action = strtolower(trim($parts[0]));
    
    switch ($action) {
        case 'list':
            echo "Listing items...<br>";
            echo "- Item 1<br>";
            echo "- Item 2<br>";
            echo "- Item 3<br>";
            return true;
            
        case 'add':
            if (isset($parts[1])) {
                $item = trim($parts[1]);
                echo "Added item: $item<br>";
            } else {
                echo "Error: Item name required<br>";
            }
            return true;
            
        case 'help':
            echo "Available commands:<br>";
            echo "- list: Show all items<br>";
            echo "- add [item]: Add a new item<br>";
            echo "- help: Show this help<br>";
            echo "- exit: Exit the program<br>";
            return true;
            
        case 'exit':
            echo "Exiting program...<br>";
            return false;
            
        default:
            echo "Unknown command. Type 'help' for available commands.<br>";
            return true;
    }
}

// Simulate a series of commands
$commands = [
    "help",
    "list",
    "add NewItem",
    "unknown",
    "exit"
];
$commandIndex = 0;

echo "Welcome to the Command Line Interface<br>";
echo "Type 'help' for available commands<br>";

do {
    echo "<br>> ";
    
    // Get command (simulated)
    $command = $commands[$commandIndex];
    echo "$command<br>";
    $commandIndex++;
    
    // Process the command
    $continue = processCommand($command);
    
} while ($continue && $commandIndex < count($commands));

echo "Program terminated.";
?>

<?php
// Simple text-based game simulation
class Player {
    public $health = 100;
    public $score = 0;
    
    public function takeDamage($amount) {
        $this->health -= $amount;
        echo "Player takes $amount damage! Health: $this->health<br>";
    }
    
    public function scorePoints($amount) {
        $this->score += $amount;
        echo "Player scores $amount points! Score: $this->score<br>";
    }
}

function generateEvent() {
    $events = [
        "Enemy attack" => function($player) {
            $damage = rand(5, 20);
            $player->takeDamage($damage);
        },
        "Find treasure" => function($player) {
            $points = rand(10, 50);
            $player->scorePoints($points);
        },
        "Health potion" => function($player) {
            $healing = rand(10, 25);
            $player->health += $healing;
            echo "Player heals $healing health! Health: $player->health<br>";
        }
    ];
    
    $eventNames = array_keys($events);
    $randomEvent = $eventNames[array_rand($eventNames)];
    
    echo "<br>EVENT: $randomEvent<br>";
    $events[$randomEvent];
    return $events[$randomEvent];
}

// Game initialization
$player = new Player();
$turnCount = 0;
$maxTurns = 5;

echo "=== GAME START ===<br>";

// Main game loop
do {
    $turnCount++;
    echo "<br>--- TURN $turnCount ---<br>";
    
    // Generate and handle a random event
    $event = generateEvent();
    $event($player);
    
    // Check if player is defeated
    if ($player->health <= 0) {
        echo "<br>Player has been defeated!<br>";
        break;
    }
    
    // Display current status
    echo "Status: Health=$player->health, Score=$player->score<br>";
    
} while ($turnCount < $maxTurns);

echo "<br>=== GAME OVER ===<br>";
echo "Final Score: " . $player->score;
?>