Add some code

cgi-bin/uebung08/hangman_lib.php

@@ -49,4 +49,46 @@ function initGame()
     $_SESSION['errorCount'] = 0;
     $_SESSION['state'] = 0;
 }
+
+//Aufgabe 3
+function guessLetter($letter) {
+    //convert to uppercase letter
+    $letter = strtoupper($letter);
+    
+    //stop here if the letter is in guessedLetters
+    if (in_array($letter, $_SESSION['guessedLetters'])) {
+        return;
+    }
+    
+    //Append the guessed letter
+    $_SESSION['guessedLetters'][] = $letter;
+    
+    //Add the letter to the mask
+    $guessword = str_split($_SESSION['toGuess']);
+    $newMask = $_SESSION['mask'];
+    $wordcontainsletter = false;
+    for ($i = 0; $i < count($guessword); $i++) {
+        if ($guessword[$i] == $letter) {
+            $newMask[$i] = $letter;
+            $wordcontainsletter = true;
+        }
+    }
+    $_SESSION['mask'] = $newMask;
+    
+    //if the guessword doesn't contain the letter increment errorCount
+    if (!$wordcontainsletter) {
+        $_SESSION['errorCount'] += 1;
+    }
+    
+    //refresh the state
+    if ($_SESSION['errorCount'] > 8) {
+        $_SESSION['state'] = 2;
+    } else if (!in_array("_", $_SESSION['mask'])) {
+        $_SESSION['state'] = 1;
+    }
+    
+    
+    
+}
+
 ?>