message_area.insertAdjacentHTML('beforeend', message);
}
+/*********************************************************
+ * Handling server-sent event stream *
+ *********************************************************/
+
const events = new EventSource("events");
events.onerror = function(event) {
}
};
+events.addEventListener("game-info", event => {
+ const info = JSON.parse(event.data);
+
+ window.game.set_game_info(info);
+});
+
+events.addEventListener("player-info", event => {
+ const info = JSON.parse(event.data);
+
+ window.game.set_player_info(info);
+});
+
+events.addEventListener("player-update", event => {
+ const info = JSON.parse(event.data);
+
+ if (info.id === window.game.state.player_info.id)
+ window.game.set_player_info(info);
+});
+
events.addEventListener("move", event => {
const move = JSON.parse(event.data);
- window.game.receiveMove(move);
+ window.game.receive_move(move);
});
events.addEventListener("game-state", event => {
const state = JSON.parse(event.data);
- window.game.resetState();
+ window.game.reset_board();
for (let square of state.moves) {
- window.game.receiveMove(square);
+ window.game.receive_move(square);
}
});
+/*********************************************************
+ * Game and supporting classes *
+ *********************************************************/
+
+function GameInfo(props) {
+ return (
+ <div className="game-info">
+ <h2>{props.id}</h2>
+ Invite a friend to play by sending this URL: {props.url}
+ </div>
+ );
+}
+
+function PlayerInfo(props) {
+ return (
+ <div className="player-info">
+ <h2>Player</h2>
+ {props.name}, ID: {props.id}, on team: {props.team}
+ </div>
+ );
+}
+
function Square(props) {
let className = "square";
}
class Board extends React.Component {
- renderSquare(i) {
+ render_square(i) {
const value = this.props.squares[i];
return (
<Square
value={value}
- active={! this.props.gameOver && ! value}
+ active={! this.props.game_over && ! value}
onClick={() => this.props.onClick(i)}
/>
);
return (
<div>
<div className="board-row">
- {this.renderSquare(0)}
- {this.renderSquare(1)}
- {this.renderSquare(2)}
+ {this.render_square(0)}
+ {this.render_square(1)}
+ {this.render_square(2)}
</div>
<div className="board-row">
- {this.renderSquare(3)}
- {this.renderSquare(4)}
- {this.renderSquare(5)}
+ {this.render_square(3)}
+ {this.render_square(4)}
+ {this.render_square(5)}
</div>
<div className="board-row">
- {this.renderSquare(6)}
- {this.renderSquare(7)}
- {this.renderSquare(8)}
+ {this.render_square(6)}
+ {this.render_square(7)}
+ {this.render_square(8)}
</div>
</div>
);
constructor(props) {
super(props);
this.state = {
+ game_info: {},
+ player_info: {},
history: [
{
squares: Array(9).fill(null)
};
}
- sendMove(i) {
+ set_game_info(info) {
+ this.setState({
+ game_info: info
+ });
+ }
+
+ set_player_info(info) {
+ this.setState({
+ player_info: info
+ });
+ }
+
+ send_move(i) {
return fetch_post_json("move", { move: i });
}
- resetState() {
+ reset_board() {
this.setState({
history: [
{
});
}
- receiveMove(i) {
+ receive_move(i) {
const history = this.state.history.slice(0, this.state.step_number + 1);
const current = history[history.length - 1];
const squares = current.squares.slice();
- if (calculateWinner(squares) || squares[i]) {
+ if (calculate_winner(squares) || squares[i]) {
return;
}
squares[i] = Team.properties[this.state.next_to_play].name;
});
}
- async handleClick(i) {
- const response = await this.sendMove(i);
+ async handle_click(i) {
+ const response = await this.send_move(i);
if (response.status == 200) {
const result = await response.json();
if (! result.legal)
render() {
const history = this.state.history;
const current = history[this.state.step_number];
- const winner = calculateWinner(current.squares);
+ const winner = calculate_winner(current.squares);
let status;
if (winner) {
status = "Next player: " + (Team.properties[this.state.next_to_play].name);
}
- return (
+ return [
+ <GameInfo
+ id={this.state.game_info.id}
+ url={this.state.game_info.url}
+ />,
+ <PlayerInfo
+ id={this.state.player_info.id}
+ name={this.state.player_info.name}
+ team={this.state.player_info.team}
+ />,
<div className="game">
- <div className="game-info">
- <div>{status}</div>
- </div>
+ <div>{status}</div>
<div className="game-board">
<Board
- gameOver={winner}
+ game_over={winner}
squares={current.squares}
- onClick={i => this.handleClick(i)}
+ onClick={i => this.handle_click(i)}
/>
</div>
</div>
- );
+ ];
}
}
-// ========================================
-
ReactDOM.render(<Game
ref={(me) => window.game = me}
/>, document.getElementById("tictactoe"));
-function calculateWinner(squares) {
+function calculate_winner(squares) {
const lines = [
[0, 1, 2],
[3, 4, 5],