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games/Tic-Tac-Toe-YZ.js

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+/*
+@title: Tic-Tac-Toe
+@author: bochk0	
+@tags: ['classic']
+@addedOn: 2024-07-17
+*/
+
+const PLAYER_Y = "Y";
+const PLAYER_Z = "Z";
+const POINTER = "P";
+
+const EMPTY_TILE = "E";
+const END_TILE = "T";
+
+setLegend(
+  [POINTER, bitmap`
+................
+................
+..777777777777..
+..7..........7..
+..7..........7..
+..7..........7..
+..7..........7..
+..7..........7..
+..7..........7..
+..7..........7..
+..7..........7..
+..7..........7..
+..7..........7..
+..777777777777..
+................
+................`],
+  [PLAYER_Y, bitmap`
+................
+................
+................
+................
+....9......9....
+....99....99....
+.....99..99.....
+......9999......
+.......99.......
+......99........
+.....99.........
+....99..........
+....9...........
+................
+................
+................`],
+  [PLAYER_Z, bitmap`
+................
+................
+................
+.....444444.....
+....44444444....
+..........44....
+.........44.....
+........44......
+.......44.......
+......44........
+.....44.........
+....44444444....
+.....444444.....
+................
+................
+................`],
+  [EMPTY_TILE, bitmap`
+3333333333333333
+3FFFFFFFFFFFFFF3
+3FFFFFFFFFFFFFF3
+3FFFFFFFFFFFFFF3
+3FFFFFFFFFFFFFF3
+3FFFFFFFFFFFFFF3
+3FFFFFFFFFFFFFF3
+3FFFFFFFFFFFFFF3
+3FFFFFFFFFFFFFF3
+3FFFFFFFFFFFFFF3
+3FFFFFFFFFFFFFF3
+3FFFFFFFFFFFFFF3
+3FFFFFFFFFFFFFF3
+3FFFFFFFFFFFFFF3
+3FFFFFFFFFFFFFF3
+3333333333333333`],
+  [END_TILE, bitmap`
+CCCCCCCCCCCCCCCC
+CCCCCCCCCCCCCCCC
+CCCCCCCCCCCCCCCC
+CCCCCCCCCCCCCCCC
+CCCCCCCCCCCCCCCC
+CCCCCCCCCCCCCCCC
+CCCCCCCCCCCCCCCC
+CCCCCCCCCCCCCCCC
+CCCCCCCCCCCCCCCC
+CCCCCCCCCCCCCCCC
+CCCCCCCCCCCCCCCC
+CCCCCCCCCCCCCCCC
+CCCCCCCCCCCCCCCC
+CCCCCCCCCCCCCCCC
+CCCCCCCCCCCCCCCC
+CCCCCCCCCCCCCCCC`]
+);
+
+setMap(map`
+EEE
+EEE
+EEE`);
+addSprite(1, 1, POINTER);
+
+let currentPlayer = true;
+let gameBoard = [
+  [" ", " ", " "],
+  [" ", " ", " "],
+  [" ", " ", " "]
+];
+let gameFinished = false;
+
+function hasWinner(board) {
+  const symbol = currentPlayer ? PLAYER_Y : PLAYER_Z;
+  const lines = [
+    [board[0][0], board[0][1], board[0][2]],
+    [board[1][0], board[1][1], board[1][2]],
+    [board[2][0], board[2][1], board[2][2]],
+    [board[0][0], board[1][0], board[2][0]],
+    [board[0][1], board[1][1], board[2][1]],
+    [board[0][2], board[1][2], board[2][2]],
+    [board[0][0], board[1][1], board[2][2]],
+    [board[0][2], board[1][1], board[2][0]]
+  ];
+
+  for (let line of lines) {
+    if (line[0] === symbol && line[1] === symbol && line[2] === symbol) {
+      return true;
+    }
+  }
+  return false;
+}
+
+function isDraw(board) {
+  for (let row of board) {
+    for (let cell of row) {
+      if (cell === " ") return false;
+    }
+  }
+  return true;
+}
+
+function endGame(message) {
+  gameFinished = true;
+  setMap(map`
+TTT
+TTT
+TTT`);
+  addText(message, { y: 7, color: color`2` });
+}
+
+function resetGame() {
+  gameFinished = false;
+  currentPlayer = true;
+  gameBoard = [
+    [" ", " ", " "],
+    [" ", " ", " "],
+    [" ", " ", " "]
+  ];
+  clearText();
+  setMap(map`
+EEE
+EEE
+EEE`);
+  addSprite(1, 1, POINTER);
+}
+
+function aiMove() {
+  const emptyCells = [];
+  for (let y = 0; y < 3; y++) {
+    for (let x = 0; x < 3; x++) {
+      if (gameBoard[y][x] === " ") {
+        emptyCells.push([y, x]);
+      }
+    }
+  }
+
+  // AI's simple strategy: winning move, blocking move, random move
+  for (let cell of emptyCells) {
+    const [y, x] = cell;
+    gameBoard[y][x] = PLAYER_Z;
+    if (hasWinner(gameBoard)) {
+      addSprite(x, y, PLAYER_Z);
+      checkGameEnd();
+      return;
+    }
+    gameBoard[y][x] = " ";
+  }
+
+  for (let cell of emptyCells) {
+    const [y, x] = cell;
+    gameBoard[y][x] = PLAYER_Y;
+    if (hasWinner(gameBoard)) {
+      gameBoard[y][x] = PLAYER_Z;
+      addSprite(x, y, PLAYER_Z);
+      checkGameEnd();
+      return;
+    }
+    gameBoard[y][x] = " ";
+  }
+
+  const [y, x] = emptyCells[Math.floor(Math.random() * emptyCells.length)];
+  gameBoard[y][x] = PLAYER_Z;
+  addSprite(x, y, PLAYER_Z);
+  checkGameEnd();
+}
+
+function checkGameEnd() {
+  if (hasWinner(gameBoard)) {
+    endGame(`${currentPlayer ? PLAYER_Y : PLAYER_Z} wins!`);
+  } else if (isDraw(gameBoard)) {
+    endGame("It's a draw!");
+  } else {
+    currentPlayer = !currentPlayer;
+    if (!currentPlayer) {
+      aiMove();
+    }
+  }
+}
+
+onInput("w", () => {
+  if (!gameFinished) getFirst(POINTER).y -= 1;
+});
+
+onInput("a", () => {
+  if (!gameFinished) getFirst(POINTER).x -= 1;
+});
+
+onInput("s", () => {
+  if (!gameFinished) getFirst(POINTER).y += 1;
+});
+
+onInput("d", () => {
+  if (!gameFinished) getFirst(POINTER).x += 1;
+});
+
+onInput("i", () => {
+  if (gameFinished || gameBoard[getFirst(POINTER).y][getFirst(POINTER).x] !== " ") return;
+
+  const symbol = currentPlayer ? PLAYER_Y : PLAYER_Z;
+  addSprite(getFirst(POINTER).x, getFirst(POINTER).y, symbol);
+  gameBoard[getFirst(POINTER).y][getFirst(POINTER).x] = symbol;
+
+  checkGameEnd();
+});
+
+onInput("k", () => {
+  resetGame();
+});