240 lines
11 KiB
HTML
240 lines
11 KiB
HTML
<!DOCTYPE html>
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<html lang="en" class="h-100">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>Name All the Cities</title>
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<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-QWTKZyjpPEjISv5WaRU9OFeRpok6YctnYmDr5pNlyT2bRjXh0JMhjY6hW+ALEwIH" crossorigin="anonymous">
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</head>
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<body class="h-100 d-flex flex-column">
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<div class="container vh-100">
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<h1>Name All the Cities</h1>
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<div class="mb-3">
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<label for="state-select" class="form-label">State:</label>
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<div class="input-group">
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<select id="state-select" class="form-select" disabled>
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<option select>Choose a state…</option>
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</select>
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<button class="btn btn-primary" type="button" id="go-button">Play</button>
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</div>
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</div>
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<div id="game" v-scope class="row h-100" style="visibility:hidden;">
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<div class="col-4">
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<div class="mb-3">
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<label for="city-guess" class="form-label">City:</label>
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<div class="input-group">
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<input class="form-control" id="city-guess" v-model="city_guess" @keyup.enter="guess">
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<button class="btn btn-primary" type="button" @click="guess">Guess</button>
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</div>
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</div>
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<div v-if="message != ''" class="alert alert-secondary" role="alert">
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{{ message }}
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</div>
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<h3>{{ state }} cities</h3>
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<div>
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<span
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v-for="(required_cities, name) in achievements"
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:class="{ 'badge': true, 'me-1': true, 'text-bg-secondary': !required_cities(cities).every(c => c.guessed), 'text-bg-warning': required_cities(cities).every(c => c.guessed) }">
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{{ name }}
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({{ required_cities(cities).filter(c => c.guessed).length }}/{{ required_cities(cities).length }})
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</span>
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</div>
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<table class="table">
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<thead>
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<tr>
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<th>Rank</th>
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<th>Name</th>
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<th>Population</th>
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</tr>
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</thead>
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<tbody>
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<template v-for="(city, rank) in cities">
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<tr v-show="city.guessed">
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<td>{{ rank + 1 }}</td>
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<td>{{ city.name }}</td>
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<td>{{ city.pop }}</td>
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</tr>
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</template>
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</tbody>
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</table>
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</div>
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<div class="col-8 h-100">
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<canvas id="canvas" class="mx-3 my-auto" @vue:mounted="draw" width="800" height="600"></canvas>
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<div>
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<input type="checkbox" v-model="show_unguessed_cities" @change="draw"> Show unguessed cities
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</div>
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</div>
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</div>
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</div>
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<footer class="footer mt-auto py-3 text-center text-muted">
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Created by <a href="https://chandlerswift.com">Chandler Swift</a> using 2020 US Census data |
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<a href="https://git.chandlerswift.com/chandlerswift/name-all-cities-by-population-quiz">Source</a>
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(<a href="https://git.chandlerswift.com/chandlerswift/name-all-cities-by-population-quiz/src/branch/main/LICENSE">GPL3</a>)
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</footer>
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<script type="module">
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let state_shape_data;
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let state_shape_data_request;
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(async function init(){
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const response = await fetch("data/states.json");
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const states = await response.json();
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const ss = document.getElementById('state-select');
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ss.disabled = false;
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for (let state of states) {
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ss.options[ss.options.length] = new Option(state);
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}
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document.getElementById('go-button').addEventListener('click', async (e) => {
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e.target.disabled = true;
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ss.disabled = true;
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await selectState(ss.value);
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document.getElementById('game').style.visibility = 'visible';
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});
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// Check if there's a parameter in the URL already
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const state = (new URLSearchParams(window.location.search)).get('state');
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if (state) {
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ss.value = state;
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document.getElementById('go-button').click();
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}
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const shape_response = await fetch("data/states.geojson");
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state_shape_data_request = shape_response.json().then(data => state_shape_data = data);
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})();
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import { createApp } from 'https://unpkg.com/petite-vue?module'
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// https://stackoverflow.com/a/13627586
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function ordinal_suffix_of(i) {
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let j = i % 10,
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k = i % 100;
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if (j === 1 && k !== 11) {
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return i + "st";
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}
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if (j === 2 && k !== 12) {
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return i + "nd";
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}
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if (j === 3 && k !== 13) {
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return i + "rd";
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}
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return i + "th";
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}
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const simplify = s => s.toLowerCase().replace(/[^a-z]/g, '');
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async function selectState(stateName) {
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const response = await fetch(`data/${stateName}.json`);
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const cities = await response.json();
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await state_shape_data_request; // We can't draw until this is in
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const state_shape = state_shape_data.features.find(f => f.properties.NAME.toLowerCase() == stateName.toLowerCase());
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let state_outlines;
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if (state_shape.geometry.type == "MultiPolygon") {
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state_outlines = state_shape.geometry.coordinates.map(a => a.flat());
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} else { // Polygon
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state_outlines = state_shape.geometry.coordinates;
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}
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console.log(state_outlines);
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const state_mercator_adjusted_bounds = find_bounds(state_outlines.flat().map(mercator));
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createApp({
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eventListenerAdded: false,
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state: stateName,
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cities: cities,
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simplified_cities: cities.map(city => simplify(city.name)),
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city_guess: "",
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message: "",
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show_unguessed_cities: true,
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achievements: {
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"Top Five": cities => cities.slice(0, 5),
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"Top Ten": cities => cities.slice(0, 10),
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"Top Twenty": cities => cities.slice(0, 20),
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"Top Fifty": cities => cities.slice(0, 50),
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"Top Hundred": cities => cities.slice(0, 100),
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"Every Single One": cities => cities,
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"All above 100k": cities => cities.filter(city => city.pop >= 100000),
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"All above 50k": cities => cities.filter(city => city.pop >= 50000),
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"All above 25k": cities => cities.filter(city => city.pop >= 25000),
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},
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guess() {
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const rank = this.simplified_cities.indexOf(simplify(this.city_guess))
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if (rank >= 0) {
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const city = this.cities[rank];
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if (!city.guessed) {
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city.guessed = true;
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this.message = `${city.name} (population ${city.pop}) is the ${ordinal_suffix_of(rank + 1)} most populated city in ${this.state}.`;
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this.city_guess = "";
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this.draw();
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} else {
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this.message = `Already guessed ${city.name} (population ${city.pop}, rank ${rank}).`;
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this.city_guess = "";
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}
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}
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},
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draw() {
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const canvas = document.getElementById("canvas");
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const ctx = canvas.getContext("2d");
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ctx.clearRect(0, 0, canvas.width, canvas.height);
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const [minx, maxx, miny, maxy] = state_mercator_adjusted_bounds;
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const height_scale = (canvas.height - 8) / (maxy - miny);
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const width_scale = (canvas.width - 8) / (maxx - minx);
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const scale = Math.min(height_scale, width_scale);
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const y_offset = miny - (canvas.height / scale - (maxy - miny)) / 2;
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const x_offset = minx - (canvas.width / scale - (maxx - minx)) / 2;
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function transform(pt) {
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pt = mercator(pt)
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return [scale * (pt[0] - x_offset), canvas.height - (scale * (pt[1] - y_offset))];
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}
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for (let state_outline_segment of state_outlines) {
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ctx.beginPath();
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ctx.moveTo(...transform(state_outline_segment[0]))
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for (let coord of state_outline_segment.slice(1)) {
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ctx.lineTo(...transform(coord));
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}
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ctx.stroke();
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}
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for (let city of cities) {
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if (city.guessed) {
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ctx.beginPath();
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const c = transform(city.location)
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ctx.fillStyle = "black";
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ctx.arc(c[0], c[1], 2, 0, 2*Math.PI, true);
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ctx.fill();
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} else if (this.show_unguessed_cities) {
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ctx.beginPath();
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const c = transform(city.location)
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ctx.fillStyle = "lightgray";
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ctx.arc(c[0], c[1], 2, 0, 2*Math.PI, true);
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ctx.fill();
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}
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}
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},
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}).mount();
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}
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function mercator(pt) {
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const radians_from_eq = Math.abs(Math.PI/180 * pt[1]);
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// https://en.wikipedia.org/wiki/Mercator_projection#Derivation
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const y_radians = Math.log(Math.tan(Math.PI/4 + radians_from_eq/2));
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const y_degrees = 180/Math.PI * y_radians;
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return [pt[0], y_degrees];
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}
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// returns minx, maxx, miny, maxy
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function find_bounds(coords) {
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return [
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Math.min(...coords.map(c => c[0])),
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Math.max(...coords.map(c => c[0])),
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Math.min(...coords.map(c => c[1])),
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Math.max(...coords.map(c => c[1]))
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];
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}
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</script>
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</body>
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</html>
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