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tictactoe_widget: Convert square_values from object to Map. 

Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
This commit is contained in:
Anders Kaseorg 2020-02-11 22:51:29 -08:00 committed by Tim Abbott
parent 5383f019be
commit 9d27407731
1 changed files with 9 additions and 9 deletions
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18
static/js/tictactoe_widget.js
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@ -4,7 +4,7 @@ const tictactoe_data_holder = function () {
const self = {};
const me = people.my_current_user_id();
const square_values = {};
const square_values = new Map();
let num_filled = 0;
let waiting = false;
let game_over = false;
@ -22,20 +22,20 @@ const tictactoe_data_holder = function () {
];
function line_won(line) {
const token = square_values[line[0]];
const token = square_values.get(line[0]);
if (!token) {
return false;
}
return (
square_values[line[1]] === token &&
square_values[line[2]] === token);
square_values.get(line[1]) === token &&
square_values.get(line[2]) === token);
}
const board = [1, 2, 3, 4, 5, 6, 7, 8, 9];
function filled(i) {
return square_values[i];
return square_values.get(i);
}
return lines.some(line_won) || board.every(filled);
@ -44,9 +44,9 @@ const tictactoe_data_holder = function () {
self.get_widget_data = function () {
function square(i) {
return {
val: square_values[i],
val: square_values.get(i),
idx: i,
disabled: waiting || square_values[i] || game_over,
disabled: waiting || square_values.get(i) || game_over,
};
}
@ -92,13 +92,13 @@ const tictactoe_data_holder = function () {
const token = num_filled % 2 === 0 ? 'X' : 'O';
if (square_values[idx]) {
if (square_values.has(idx)) {
return;
}
waiting = sender_id === me;
square_values[idx] = token;
square_values.set(idx, token);
num_filled += 1;
game_over = is_game_over();