commit 5f7be59b6d2a1c2695ef8eea2a867c1f77d9256c
Author: Selim Eser <2211482@stud.hs-mannheim.de>
Date:   Fri Jan 3 19:59:39 2025 +0100

    Initial commit

diff --git a/.DS_Store b/.DS_Store
new file mode 100644
index 0000000..31d933f
Binary files /dev/null and b/.DS_Store differ
diff --git a/4GEWINNT.php b/4GEWINNT.php
new file mode 100644
index 0000000..429603c
--- /dev/null
+++ b/4GEWINNT.php
@@ -0,0 +1,319 @@
+<?php
+error_reporting(E_ALL ^ E_WARNING);
+
+session_start();
+global $_SESSION;
+
+if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['choice'])) {
+    gamelogic();
+}
+
+if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['restart'])) {
+    $_SESSION["currentplayer"] = "red";
+    $_SESSION["playcounter"] = 0;
+    $_SESSION["restart"] = '<button id="restart" type="submit" name="restart" hidden>&#8635</button>';
+    $_SESSION["message"] = "";
+    unset($_SESSION["winningchip"]);
+    fillboard();
+}
+
+if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['selection'])) {
+    $_SESSION["gamemode"] = (int) $_POST['selection'];
+    $_SESSION["currentplayer"] = "red";
+    $_SESSION["playcounter"] = 0;
+    $_SESSION["restart"] = '<button id="restart" type="submit" name="restart" hidden>&#8635</button>';
+    $_SESSION["message"] = "";
+    fillboard();
+}
+
+if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['menu'])) {
+    unset($_SESSION["gamemode"]);
+    unset($_SESSION["currentplayer"]);
+    unset($_SESSION["playcounter"]);
+    unset($_SESSION["restart"]);
+    unset($_SESSION["message"]);
+    unset($_SESSION["board"]);
+    unset($_SESSION["winningchip"]);
+}
+
+function fillboard(){
+    for ($row = 0; $row < 6; $row++) {
+        for ($col = 0; $col < 7; $col++) {
+            $_SESSION["board"][$row][$col] = "white";
+        }
+    }
+}
+
+function gamelogic(){
+    if ($_SESSION["restart"] === '<button id="restart" type="submit" name="restart" hidden>&#8635</button>') {
+        if ($_SESSION["gamemode"] === 1) {
+            for ($i = 0; $i <= 1; $i++) {
+                if ($i === 0) {
+                    $playerchoice = (int) $_POST['choice'];
+                } else {
+                    $playerchoice = botturn();
+                }
+
+                $placemem = placechip($playerchoice);
+                $currentplayermem = currentplayerger();
+                $_SESSION["message"] = $placemem[0] ? "" : "Spalte ist schon voll!";
+
+                if (!($_SESSION["message"] === "")) {
+                    break;
+                }
+
+                $_SESSION["playcounter"]++;
+
+                if ($currentplayermem === "Gelb") {
+                    $_SESSION["message"] = checkwin($placemem[1], $playerchoice) ? "Roboter "
+                    . $currentplayermem
+                    . " hat gewonnen!" : "";
+                } else {
+                    $_SESSION["message"] = checkwin($placemem[1], $playerchoice) ? "Spieler "
+                    . $currentplayermem
+                    . " hat gewonnen!" : "";
+                }
+
+                swapplayer();
+
+                if (
+                    $_SESSION["message"] === "Spieler "
+                    . $currentplayermem
+                    . " hat gewonnen!" ||
+                    $_SESSION["message"] === "Roboter "
+                    . $currentplayermem
+                    . " hat gewonnen!"
+                ) {
+                    $_SESSION["restart"] = '<button id="restart" type="submit" name="restart">&#8635</button>';
+                    $_SESSION["winningchip"] = [$placemem[1], $playerchoice];
+                    break;
+                }
+
+                $_SESSION["message"] = $_SESSION["playcounter"] === 42 ? "Unentschieden!" : "";
+
+                if ($_SESSION["message"] === "Unentschieden!") {
+                    $_SESSION["restart"] = '<button id="restart" type="submit" name="restart">&#8635</button>';
+                    break;
+                }
+            }
+
+        } else {
+
+            $playerchoice = (int) $_POST['choice'];
+            $placemem = placechip($playerchoice);
+            $currentplayermem = currentplayerger();
+            $_SESSION["message"] = $placemem[0] ? "" : "Spalte ist schon voll!";
+
+            if (!($_SESSION["message"] === "")) {
+                return;
+            }
+
+            $_SESSION["playcounter"]++;
+
+            $_SESSION["message"] = checkwin($placemem[1], $playerchoice) ? "Spieler "
+            . $currentplayermem
+            . " hat gewonnen!" : "";
+
+            swapplayer();
+
+            if (
+                $_SESSION["message"] === "Spieler "
+                . $currentplayermem
+                . " hat gewonnen!"
+            ) {
+                $_SESSION["restart"] = '<button id="restart" type="submit" name="restart">&#8635</button>';
+                $_SESSION["winningchip"] = [$placemem[1], $playerchoice];
+                return;
+            }
+
+            $_SESSION["message"] = $_SESSION["playcounter"] === 42 ? "Unentschieden!" : "";
+
+            if ($_SESSION["message"] === "Unentschieden!") {
+                $_SESSION["restart"] = '<button id="restart" type="submit" name="restart">&#8635</button>';
+            }
+
+        }
+    }
+}
+
+function placechip($col){
+    for ($row = 6; $row >= 0; $row--) {
+        if ($_SESSION["board"][$row][$col] === "white") {
+            $_SESSION["board"][$row][$col] = $_SESSION["currentplayer"];
+            return [true, $row];
+        }
+    }
+    return false;
+}
+
+function checkwin($row, $col){
+    return $_SESSION["board"][$row][$col] === $_SESSION["currentplayer"]
+    && $_SESSION["board"][$row + 1][$col] === $_SESSION["currentplayer"]
+    && $_SESSION["board"][$row + 2][$col] === $_SESSION["currentplayer"]
+    && $_SESSION["board"][$row + 3][$col] === $_SESSION["currentplayer"] ||
+    $_SESSION["board"][$row][$col] === $_SESSION["currentplayer"]
+    && $_SESSION["board"][$row - 1][$col] === $_SESSION["currentplayer"]
+    && $_SESSION["board"][$row - 2][$col] === $_SESSION["currentplayer"]
+    && $_SESSION["board"][$row - 3][$col] === $_SESSION["currentplayer"] ||
+    $_SESSION["board"][$row][$col] === $_SESSION["currentplayer"]
+    && $_SESSION["board"][$row][$col + 1] === $_SESSION["currentplayer"]
+    && $_SESSION["board"][$row][$col + 2] === $_SESSION["currentplayer"]
+    && $_SESSION["board"][$row][$col + 3] === $_SESSION["currentplayer"] ||
+    $_SESSION["board"][$row][$col] === $_SESSION["currentplayer"]
+    && $_SESSION["board"][$row][$col - 1] === $_SESSION["currentplayer"]
+    && $_SESSION["board"][$row][$col - 2] === $_SESSION["currentplayer"]
+    && $_SESSION["board"][$row][$col - 3] === $_SESSION["currentplayer"] ||
+    $_SESSION["board"][$row][$col] === $_SESSION["currentplayer"]
+    && $_SESSION["board"][$row + 1][$col + 1] === $_SESSION["currentplayer"]
+    && $_SESSION["board"][$row + 2][$col + 2] === $_SESSION["currentplayer"]
+    && $_SESSION["board"][$row + 3][$col + 3] === $_SESSION["currentplayer"] ||
+    $_SESSION["board"][$row][$col] === $_SESSION["currentplayer"]
+    && $_SESSION["board"][$row - 1][$col - 1] === $_SESSION["currentplayer"]
+    && $_SESSION["board"][$row - 2][$col - 2] === $_SESSION["currentplayer"]
+    && $_SESSION["board"][$row - 3][$col - 3] === $_SESSION["currentplayer"] ||
+    $_SESSION["board"][$row][$col] === $_SESSION["currentplayer"]
+    && $_SESSION["board"][$row + 1][$col - 1] === $_SESSION["currentplayer"]
+    && $_SESSION["board"][$row + 2][$col - 2] === $_SESSION["currentplayer"]
+    && $_SESSION["board"][$row + 3][$col - 3] === $_SESSION["currentplayer"] ||
+    $_SESSION["board"][$row][$col] === $_SESSION["currentplayer"]
+    && $_SESSION["board"][$row - 1][$col + 1] === $_SESSION["currentplayer"]
+    && $_SESSION["board"][$row - 2][$col + 2] === $_SESSION["currentplayer"]
+    && $_SESSION["board"][$row - 3][$col + 3] === $_SESSION["currentplayer"] ? true : false;
+
+}
+
+function swapplayer(){
+    $_SESSION["currentplayer"] = $_SESSION["currentplayer"] === "red" ? "yellow" : "red";
+}
+
+function currentplayerger(){
+    return $_SESSION["currentplayer"] === "red" ? "Rot" : "Gelb";
+}
+
+function botturn(){
+    while (true) {
+        $mem = random_int(0, 6);
+        if ($_SESSION["board"][0][$mem] === "white") {
+            return $mem;
+        }
+    }
+}
+
+?>
+
+<!DOCTYPE html>
+<html lang="de">
+
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>4-GEWINNT</title>
+    <style>
+    body {
+        all: initial;
+    }
+
+    h1,
+    p,
+    button {
+        text-align: center;
+        font-family: "Helvetica", sans-serif;
+    }
+
+    #board {
+        display: flex;
+        align-items: center;
+        justify-content: center;
+        background-color: white;
+    }
+
+    form {
+        min-width: 350px;
+        min-height: 100px;
+        background-color: blue;
+        border: solid black 5px;
+    }
+
+    .chips {
+        margin: 10px;
+        height: 50px;
+        width: 50px;
+        border: solid black 3px;
+        border-radius: 100%;
+    }
+
+    #restart {
+        width: 20%;
+        height: 50px;
+        margin-left: 40%;
+        margin-bottom: 2.5%;
+        background-color: white;
+        border: solid black 3px;
+        font-size: 30px;
+    }
+
+    .selection {
+        width: 100px;
+        height: 50px;
+        font-size: 20px;
+        border: solid black 3px;
+        background-color: white;
+        margin-top: 25px;
+        margin-bottom: 20px;
+        margin-left: 50px;
+    }
+
+    #menu {
+        width: 30%;
+        margin-top: 10px;
+        margin-left: 35%;
+    }
+    </style>
+</head>
+
+<body>
+    <h1>4-GEWINNT</h1>
+    <div id="board">
+        <form method="post">
+            <?php
+                if (!isset($_SESSION["gamemode"])) {
+                    echo '<button class="selection" type="submit" name="selection" value="1">1 Spieler</button>'
+                        . '<button class="selection" type="submit" name="selection" value="2">2 Spieler</button>';
+                }
+
+                if (isset($_SESSION["gamemode"])) {
+                    for ($row = 0; $row < 6; $row++) {
+                        for ($col = 0; $col < 7; $col++) {
+                            if ($row === 0 && !(isset($_SESSION["winningchip"]))) {
+                                echo '<button class="chips" type="submit" name="choice" value="'
+                                    . $col
+                                    . '" style="background-color:'
+                                    . $_SESSION['board'][$row][$col]
+                                    . '">'
+                                    . '&#8203</button>';
+                            } else if (isset($_SESSION["winningchip"]) && $_SESSION["winningchip"][0] === $row && $_SESSION["winningchip"][1] === $col) {
+                                echo '<button class="chips" disabled="true" style="background-color:'
+                                    . $_SESSION['board'][$row][$col]
+                                    . '; border: outset black 7px">'
+                                    . '&#8203</button>';
+                            } else {
+                                echo '<button class="chips" disabled="true" style="background-color:'
+                                    . $_SESSION['board'][$row][$col]
+                                    . '">'
+                                    . '&#8203</button>';
+                            }
+
+                        }
+                        echo "<br/>";
+                    }
+                    echo "<br/>"
+                        . $_SESSION["restart"];
+                    echo '<button class="selection" id="menu" type="submit" name="menu">Men&uuml</button>';
+                }
+            ?>
+        </form>
+    </div>
+    <p><?=$_SESSION["message"]?></p>
+</body>
+
+</html>
\ No newline at end of file