inital commitHEADmaster

1 files changed, 118 insertions, 0 deletions

diff --git a/src/game.js b/src/game.js
new file mode 100644
index 0000000..0820f8c
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+++ b/src/game.js
@@ -0,0 +1,118 @@
+import { getInput } from "./utils.js";
+
+let game = {
+  player1: {
+    symbol: "X",
+    name: undefined,
+  },
+  player2: {
+    symbol: "O",
+    name: undefined,
+  },
+  turn: "player1",
+  state: "setup",
+  board: [" ", " ", " ", " ", " ", " ", " ", " ", " "],
+};
+
+const winningPositions = [
+  [0, 1, 2],
+  [0, 3, 6],
+  [0, 4, 8],
+  [1, 4, 7],
+  [2, 5, 8],
+  [2, 4, 6],
+  [3, 4, 5],
+  [6, 7, 8],
+];
+
+function checkForWin() {
+  let winner = "";
+  for (let position of winningPositions) {
+    if (
+      // ignore field empty
+      game.board[position[0]] != " " &&
+      game.board[position[1]] != " " &&
+      game.board[position[2]] != " " &&
+      // check if three in a row
+      game.board[position[0]] == game.board[position[1]] &&
+      game.board[position[1]] == game.board[position[2]]
+    ) {
+      winner =
+        game.player1.symbol == game.board[position[0]]
+          ? game.player1.name
+          : game.player2.name;
+    }
+  }
+  return winner;
+}
+
+async function gameLoop() {
+  while (game.state == "running") {
+    outputBoard();
+
+    let winner = checkForWin();
+    if (winner) {
+      console.log(`${winner} has won!`);
+      game.state = "finish";
+      return;
+    }
+
+    await questionLoop();
+  }
+
+  async function questionLoop() {
+    let playerMove = await getInput(
+      `Where would you want to place (${game[game.turn].name})?: `,
+    );
+
+    while (game.board[playerMove - 1] != " ") {
+      console.log("\nThere is already a Symbol. Try again.");
+      playerMove = await getInput(
+        `Where would you want to place (${game[game.turn].name})?: `,
+      );
+    }
+
+    if (game.turn == "player2") {
+      move(game.player2, playerMove);
+      game.turn = "player1";
+    } else {
+      move(game.player1, playerMove);
+      game.turn = "player2";
+    }
+  }
+}
+
+async function setupGame() {
+  console.log("Let's Start a Game of Tic Tac Toe! \n");
+  game.player1.name = await getInput("Name of Player 1: ");
+  game.player2.name = await getInput("Name of Player 2: ");
+  game.state = "running";
+}
+
+function move(player, position) {
+  game.board[position - 1] = player.symbol;
+}
+
+export default async function start() {
+  if (game.state == "setup") {
+    await setupGame();
+  }
+
+  if (game.state == "running") {
+    await gameLoop();
+  }
+
+  if (game.state == "finish") {
+    process.exit();
+  }
+}
+
+function outputBoard() {
+  console.log("\n");
+  console.log(`${game.board[0]} | ${game.board[1]} | ${game.board[2]}`);
+  console.log("---------");
+  console.log(`${game.board[3]} | ${game.board[4]} | ${game.board[5]}`);
+  console.log("---------");
+  console.log(`${game.board[6]} | ${game.board[7]} | ${game.board[8]}`);
+  console.log("\n");
+}