added first game rendering engine

main.cpp

@@ -0,0 +1,70 @@
+#include <iostream>
+#include <windows.h>
+#include <iomanip>
+#include <map>
+#include <vector>
+
+using namespace std;
+
+
+string spielfeld[3][3] = {
+    {" ", " ", " "},
+    {" ", " ", " "},
+    {" ", " ", " "}
+};
+
+struct userInput {
+    bool ok;
+    int spalte;
+    int zeile;
+};
+
+void render() {
+    system("cls");
+
+    cout << "  | 1 | 2 | 3 |" << endl;
+    cout << "---------------" << endl;
+    for (int i = 0; i < 3; i++) {
+        cout << i+1 << " | ";
+        for (int j = 0; j < 3; j++) {
+            cout << spielfeld[i][j] << " | ";
+        }
+        cout << endl;
+        cout << "---------------" << endl;
+    }
+}
+
+userInput getUserInput() {
+    int inputSpalte, inputZeile;
+    cout << "Zeile: ";
+    cin >> inputZeile;
+    cout << "Spalte: ";
+    cin >> inputSpalte;
+    cout << endl;
+    if (spielfeld[inputSpalte-1][inputZeile-1] == " ") {
+        return {true, inputSpalte-1, inputZeile-1};
+    } else {
+        cout << endl << "Input konnte nicht gelesen werden" << endl;
+        return getUserInput();
+    }
+}
+
+void checkforWin() {
+    // TODO: check for win or fail and return a game struct.
+}
+
+int main() {
+    SetConsoleOutputCP(CP_UTF8);
+    cout << fixed << setprecision(2);
+
+    int counter = 1;
+    while (true) {
+        render();
+        string current_player = counter++ % 2 == 1 ? "X" : "O";
+        cout << endl << "Am Zug ist Spieler: " << current_player << endl;
+        if (auto [ok, spalte, zeile] = getUserInput(); ok) {
+            spielfeld[zeile][spalte] = current_player;
+        }
+    }
+    return 0;
+}