--- /dev/null
+# Defer all targets up to the upper-level
+#
+# This requires two recipes. The first to cover the case of no
+# explicit target specifed (so when invoked as "make" we call "make"
+# at the upper-level) and then a .DEFAULT recipe to pass any explicit
+# target up as well, (so that an invocation of "make foo" results in a
+# call to "make foo" above.
+all:
+ $(MAKE) -C ..
+
+.DEFAULT:
+ $(MAKE) -C .. $@
--- /dev/null
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8"/>
+ <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+
+ <title>Tic-tac-toe</title>
+
+ <script src="/react.js"></script>
+ <script src="/react-dom.js"></script>
+ <link rel="stylesheet" href="tictactoe.css" type="text/css" />
+ <script type="module" src="tictactoe.js"></script>
+ </head>
+ <body>
+ <div id="tictactoe"></div>
+ </body>
+</html>
--- /dev/null
+function Square(props) {
+ return (
+ <button className="square" onClick={props.onClick}>
+ {props.value}
+ </button>
+ );
+}
+
+class Board extends React.Component {
+ renderSquare(i) {
+ return (
+ <Square
+ value={this.props.squares[i]}
+ onClick={() => this.props.onClick(i)}
+ />
+ );
+ }
+
+ render() {
+ return (
+ <div>
+ <div className="board-row">
+ {this.renderSquare(0)}
+ {this.renderSquare(1)}
+ {this.renderSquare(2)}
+ </div>
+ <div className="board-row">
+ {this.renderSquare(3)}
+ {this.renderSquare(4)}
+ {this.renderSquare(5)}
+ </div>
+ <div className="board-row">
+ {this.renderSquare(6)}
+ {this.renderSquare(7)}
+ {this.renderSquare(8)}
+ </div>
+ </div>
+ );
+ }
+}
+
+class Game extends React.Component {
+ constructor(props) {
+ super(props);
+ this.state = {
+ history: [
+ {
+ squares: Array(9).fill(null)
+ }
+ ],
+ stepNumber: 0,
+ xIsNext: true
+ };
+ }
+
+ handleClick(i) {
+ const history = this.state.history.slice(0, this.state.stepNumber + 1);
+ const current = history[history.length - 1];
+ const squares = current.squares.slice();
+ if (calculateWinner(squares) || squares[i]) {
+ return;
+ }
+ squares[i] = this.state.xIsNext ? "X" : "O";
+ this.setState({
+ history: history.concat([
+ {
+ squares: squares
+ }
+ ]),
+ stepNumber: history.length,
+ xIsNext: !this.state.xIsNext
+ });
+ }
+
+ jumpTo(step) {
+ this.setState({
+ stepNumber: step,
+ xIsNext: (step % 2) === 0
+ });
+ }
+
+ render() {
+ const history = this.state.history;
+ const current = history[this.state.stepNumber];
+ const winner = calculateWinner(current.squares);
+
+ const moves = history.map((step, move) => {
+ const desc = move ?
+ 'Go to move #' + move :
+ 'Go to game start';
+ return (
+ <li key={move}>
+ <button onClick={() => this.jumpTo(move)}>{desc}</button>
+ </li>
+ );
+ });
+
+ let status;
+ if (winner) {
+ status = "Winner: " + winner;
+ } else {
+ status = "Next player: " + (this.state.xIsNext ? "X" : "O");
+ }
+
+ return (
+ <div className="game">
+ <div className="game-board">
+ <Board
+ squares={current.squares}
+ onClick={i => this.handleClick(i)}
+ />
+ </div>
+ <div className="game-info">
+ <div>{status}</div>
+ <ol>{moves}</ol>
+ </div>
+ </div>
+ );
+ }
+}
+
+// ========================================
+
+ReactDOM.render(<Game />, document.getElementById("tictactoe"));
+
+function calculateWinner(squares) {
+ const lines = [
+ [0, 1, 2],
+ [3, 4, 5],
+ [6, 7, 8],
+ [0, 3, 6],
+ [1, 4, 7],
+ [2, 5, 8],
+ [0, 4, 8],
+ [2, 4, 6]
+ ];
+ for (let i = 0; i < lines.length; i++) {
+ const [a, b, c] = lines[i];
+ if (squares[a] && squares[a] === squares[b] && squares[a] === squares[c]) {
+ return squares[a];
+ }
+ }
+ return null;
+}
projects / lmno.games / commitdiff