celebrate with fireworks if bingo was scored

fireworks.js

@@ -0,0 +1,235 @@
+window.requestAnimFrame = (function () {
+    return window.requestAnimationFrame ||
+        window.webkitRequestAnimationFrame ||
+        window.mozRequestAnimationFrame ||
+        function (callback) {
+            window.setTimeout(callback, 1000 / 60);
+        };
+})();
+
+var canvas = null,
+    ctx = null,
+    cw = window.innerWidth,
+    ch = window.innerHeight,
+    fireworksLimit = 10,
+    fireworksShown = 0,
+    fireworks = [],
+    particles = [],
+    hue = 120,
+    timerTotal = 25,
+    timerTick = 0,
+    animationEnd = true;
+
+function random(min, max) {
+    return Math.random() * (max - min) + min;
+}
+
+/* To sprawdzic... */
+function calculateDistance(p1x, p1y, p2x, p2y) {
+    var xDistance = p1x - p2x,
+        yDistance = p1y - p2y;
+    return Math.sqrt(Math.pow(xDistance, 2) + Math.pow(yDistance, 2));
+}
+
+function Firework(sx, sy, tx, ty) {
+    this.x = sx;
+    this.y = sy;
+
+    this.sx = sx;
+    this.sy = sy;
+
+    this.tx = tx;
+    this.ty = ty;
+
+    this.distanceToTarget = calculateDistance(sx, sy, tx, ty);
+    this.distanceTraveled = 0;
+
+    this.coordinates = [];
+    this.coordinateCount = 3;
+
+    while (this.coordinateCount--) {
+        this.coordinates.push([this.x, this.y]);
+    }
+
+    this.angle = Math.atan2(ty - sy, tx - sx);
+    this.speed = 2;
+    this.acceleration = 1.05;
+    this.brightness = random(50, 70);
+    this.targetRadius = 1;
+}
+
+Firework.prototype.update = function (index) {
+    this.coordinates.pop();
+    this.coordinates.unshift([this.x, this.y]);
+
+    if (this.targetRadius < 8) {
+        this.targetRadius += 0.3;
+    } else {
+        this.targetRadius = 1;
+    }
+
+    // speed up the firework
+    this.speed *= this.acceleration;
+
+    // get the current velocities based on angle and speed
+    var vx = Math.cos(this.angle) * this.speed,
+        vy = Math.sin(this.angle) * this.speed;
+    // how far will the firework have traveled with velocities applied?
+    this.distanceTraveled = calculateDistance(this.sx, this.sy, this.x + vx, this.y + vy);
+
+    if (this.distanceTraveled >= this.distanceToTarget) {
+        createParticles(this.tx, this.ty);
+        // remove the firework, use the index passed into the update function to determine which to remove
+        fireworks.splice(index, 1);
+    } else {
+        // target not reached, keep traveling
+        this.x += vx;
+        this.y += vy;
+    }
+}
+
+// draw firework
+Firework.prototype.draw = function () {
+    ctx.beginPath();
+    // move to the last tracked coordinate in the set, then draw a line to the current x and y
+    ctx.moveTo(this.coordinates[this.coordinates.length - 1][0], this.coordinates[this.coordinates.length - 1][1]);
+    ctx.lineTo(this.x, this.y);
+    ctx.strokeStyle = 'hsl(' + hue + ', 100%, ' + this.brightness + '%)';
+    ctx.stroke();
+}
+
+function Particle(x, y) {
+    this.x = x;
+    this.y = y;
+    // track the past coordinates of each particle to create a trail effect, increase the coordinate count to create more prominent trails
+    this.coordinates = [];
+    this.coordinateCount = 5;
+    while (this.coordinateCount--) {
+        this.coordinates.push([this.x, this.y]);
+    }
+    // set a random angle in all possible directions, in radians
+    this.angle = random(0, Math.PI * 2);
+    this.speed = random(1, 10);
+    // friction will slow the particle down
+    this.friction = 0.98;
+    // gravity will be applied and pull the particle down
+    this.gravity = 1;
+    // set the hue to a random number +-50 of the overall hue variable
+    this.hue = random(hue - 50, hue + 50);
+    this.brightness = random(50, 80);
+    this.alpha = 1;
+    // set how fast the particle fades out
+    this.decay = random(0.015, 0.03);
+}
+
+// update particle
+Particle.prototype.update = function (index) {
+    // remove last item in coordinates array
+    this.coordinates.pop();
+    // add current coordinates to the start of the array
+    this.coordinates.unshift([this.x, this.y]);
+    // slow down the particle
+    this.speed *= this.friction;
+    // apply velocity
+    this.x += Math.cos(this.angle) * this.speed;
+    this.y += Math.sin(this.angle) * this.speed + this.gravity;
+    // fade out the particle
+    this.alpha -= this.decay;
+
+    // remove the particle once the alpha is low enough, based on the passed in index
+    if (this.alpha <= this.decay) {
+        particles.splice(index, 1);
+    }
+
+    if (particles.length === 0) {
+        if (fireworksShown === fireworksLimit) {
+            animationEnd = true;
+        }
+    }
+}
+
+// draw particle
+Particle.prototype.draw = function () {
+    ctx.beginPath();
+    // move to the last tracked coordinates in the set, then draw a line to the current x and y
+    ctx.moveTo(this.coordinates[this.coordinates.length - 1][0], this.coordinates[this.coordinates.length - 1][1]);
+    ctx.lineTo(this.x, this.y);
+    ctx.strokeStyle = 'hsla(' + this.hue + ', 100%, ' + this.brightness + '%, ' + this.alpha + ')';
+    ctx.stroke();
+}
+
+// create particle group/explosion
+function createParticles(x, y) {
+    // increase the particle count for a bigger explosion, beware of the canvas performance hit with the increased particles though
+    var particleCount = 500;
+    while (particleCount--) {
+        particles.push(new Particle(x, y));
+    }
+}
+
+function loop() {
+    if (animationEnd === true) {
+        animationFinish();
+        return true;
+    }
+
+    requestAnimationFrame(loop);
+    hue = random(0, 360);
+
+    ctx.globalCompositeOperation = 'destination-out';
+    ctx.fillStyle = 'rgba(0, 0, 0, 0.5)';
+    ctx.fillRect(0, 0, cw, ch);
+    ctx.globalCompositeOperation = 'lighter';
+
+    var i = fireworks.length;
+    while (i--) {
+        fireworks[i].draw();
+        fireworks[i].update(i);
+    }
+
+    var i = particles.length;
+    while (i--) {
+        particles[i].draw();
+        particles[i].update(i);
+    }
+
+    if (timerTick >= timerTotal) {
+        // start the firework at the bottom middle of the screen, then set the random target coordinates, the random y coordinates will be set within the range of the top half of the screen
+        if (fireworksShown < fireworksLimit) {
+            fireworks.push(new Firework(cw / 2, ch, random(0, cw), random(0, ch / 2)));
+            fireworksShown++;
+            timerTick = 0;
+        }
+    } else {
+        timerTick++;
+    }
+}
+
+//window.onload = loop;
+window.fireworks.start = function () {
+    /* Prevent multiple animations */
+    if (animationEnd === false) {
+        return false;
+    }
+
+    fireworksShown = 0;
+    animationEnd = false;
+    canvas = document.createElement('canvas');
+    document.body.appendChild(canvas);
+    ctx = canvas.getContext('2d');
+    canvas.style.zIndex = 100;
+    canvas.style.top = 0;
+    canvas.style.left = 0;
+    canvas.style.position = 'fixed';
+    canvas.width = cw;
+    canvas.height = ch;
+    //canvas.style.background = "rgba(0,0,0,0.7)";
+
+    loop();
+
+    //setTimeout(function(){animationEnd = true;}, 4500);
+}
+
+animationFinish = function () {
+    document.body.removeChild(canvas);
+};

index.html

@@ -9,11 +9,50 @@
 
     <link rel="stylesheet" href="style.css">
     <script src="script.js" defer></script>
+    <script src="fireworks.js" defer></script>
 </head>
 
 <body>
 <h1>7 vs. Wild Bingo <span id="refresh-bingo">🔄</span></h1>
-<table id="bingo"></table>
+<table id="bingo">
+    <tr>
+        <td data-row="0" data-col="0" class="bingo-field"></td>
+        <td data-row="0" data-col="1" class="bingo-field"></td>
+        <td data-row="0" data-col="2" class="bingo-field"></td>
+        <td data-row="0" data-col="3" class="bingo-field"></td>
+        <td data-row="0" data-col="4" class="bingo-field"></td>
+    </tr>
+    <tr>
+        <td data-row="1" data-col="0" class="bingo-field"></td>
+        <td data-row="1" data-col="1" class="bingo-field"></td>
+        <td data-row="1" data-col="2" class="bingo-field"></td>
+        <td data-row="1" data-col="3" class="bingo-field"></td>
+        <td data-row="1" data-col="4" class="bingo-field"></td>
+    </tr>
+    <tr>
+        <td data-row="2" data-col="0" class="bingo-field"></td>
+        <td data-row="2" data-col="1" class="bingo-field"></td>
+        <td data-row="2" data-col="2" class="center-field drawn">
+            <img id="center-field-image" alt="Image" src="#">
+        </td>
+        <td data-row="2" data-col="3" class="bingo-field"></td>
+        <td data-row="2" data-col="4" class="bingo-field"></td>
+    </tr>
+    <tr>
+        <td data-row="3" data-col="0" class="bingo-field"></td>
+        <td data-row="3" data-col="1" class="bingo-field"></td>
+        <td data-row="3" data-col="2" class="bingo-field"></td>
+        <td data-row="3" data-col="3" class="bingo-field"></td>
+        <td data-row="3" data-col="4" class="bingo-field"></td>
+    </tr>
+    <tr>
+        <td data-row="4" data-col="0" class="bingo-field"></td>
+        <td data-row="4" data-col="1" class="bingo-field"></td>
+        <td data-row="4" data-col="2" class="bingo-field"></td>
+        <td data-row="4" data-col="3" class="bingo-field"></td>
+        <td data-row="4" data-col="4" class="bingo-field"></td>
+    </tr>
+</table>
 <p id="seeed">Seeed: <span id="seeed-value"></span> <span id="copy-permalink">📋</span></p>
 </body>
 </html>

script.js

@@ -1,3 +1,4 @@
+"use strict"
 let fields = [
     // 'MARTINAA/JAAAAA??!!',
     // '"Du bist doch auch so einer, der ..."',
@@ -49,19 +50,28 @@ let fields = [
     'kleine Krebse',
 
 ];
-
+let seed;
-const FREE_FIELD_TEXT = "Freies Parken"
 const urlParams = new URLSearchParams(window.location.search);
 const seed_elem = document.querySelector('#seeed-value');
+const centerFieldImage = document.querySelector('#center-field-image');
+const bingoFields = document.querySelectorAll('#bingo td.bingo-field');
+const refreshBingoButton = document.querySelector('#refresh-bingo');
+const copyPermalinkButton = document.querySelector('#copy-permalink');
+
+centerFieldImage.src = "img/7-vs-wild-logo.svg";
+centerFieldImage.alt = "7 vs. Wild Logo";
+
+/**
+ * Reads the seed from URL Parameter or generates new seed
+ */
 
-let seed;
 if (urlParams.has('seeed')) {
     seed = urlParams.get('seeed');
 } else {
     seed = Date.now().toString();
 }
 
-const copyPermalinkButton = document.querySelector('#copy-permalink');
+
 const copyPermalinkToClipboard = function () {
     const permalink = window.location.href;
     navigator.clipboard.writeText(permalink);
@@ -69,69 +79,75 @@ const copyPermalinkToClipboard = function () {
 copyPermalinkButton.addEventListener('click', copyPermalinkToClipboard);
 
 
-const generateTable = function () {
+const shuffleBoard = () => {
     let prng_hash_seed = cyrb128(seed);
     let rand = sfc32(prng_hash_seed[0], prng_hash_seed[1], prng_hash_seed[2], prng_hash_seed[3]);
 
-    let shuffled = fields
+    return fields
         .map(value => ({value, sort: rand()}))
         .sort((a, b) => a.sort - b.sort)
         .map(({value}) => value)
-
-    shuffled.splice(12, 0, FREE_FIELD_TEXT);
-
-    return shuffled;
 }
 
-const drawTable = function () {
+const checkForBingo = (field) => {
-    let shuffled = generateTable();
+    let bingo = false;
+    let clickedRow = parseInt(field.dataset.row);
+    let clickedCol = parseInt(field.dataset.col);
 
-    const bingoTable = document.querySelector('#bingo');
+    //check horizontal and vertical axis
-    let table = document.createElement('table');
+    if (document.querySelectorAll(`#bingo td.bingo-field.drawn[data-row='${clickedRow}']`).length === 5
-    table.id = 'bingo';
+        || document.querySelectorAll(`#bingo td.bingo-field.drawn[data-col='${clickedCol}']`).length === 5) {
-    let tableBody = document.createElement('tbody');
+        bingo = true
-    let row;
+    }
-    shuffled.forEach((field, index) => {
+
-        if (index % 5 === 0) {
+    //check diagonal axis
-            row = tableBody.insertRow();
+    if (clickedRow === clickedCol) {
+        if (
+            document.querySelector(`#bingo td.bingo-field.drawn[data-row="0"][data-col="0"]`) &&
+            document.querySelector(`#bingo td.bingo-field.drawn[data-row="1"][data-col="1"]`) &&
+            document.querySelector(`#bingo td.bingo-field.drawn[data-row="3"][data-col="3"]`) &&
+            document.querySelector(`#bingo td.bingo-field.drawn[data-row="4"][data-col="4"]`)
+        ) {
+            bingo = true;
         }
-        let cell = row.insertCell();
+    } else if (clickedRow + clickedCol === 4) {
-
+        if (
-        let text = document.createTextNode(field);
+            document.querySelector(`#bingo td.bingo-field.drawn[data-row="0"][data-col="4"]`) &&
-        if (field === FREE_FIELD_TEXT) {
+            document.querySelector(`#bingo td.bingo-field.drawn[data-row="1"][data-col="3"]`) &&
-            cell.className = 'center-field';
+            document.querySelector(`#bingo td.bingo-field.drawn[data-row="3"][data-col="1"]`) &&
+            document.querySelector(`#bingo td.bingo-field.drawn[data-row="4"][data-col="0"]`)
+        ) {
+            bingo = true;
         }
-        cell.appendChild(text);
+    }
-    });
+    if (bingo) {
-    table.appendChild(tableBody);
+        window.fireworks.start();
-    bingoTable.replaceWith(table);
+    }
 
-    table.addEventListener('click', (ev) => {
-        let cell;
-        let target_type = ev.target.tagName.toLowerCase();
 
-        if (target_type === "td") {
+};
-            cell = ev.target;
+const drawBingoFieldEventHandler = (ev) => {
-        } else if (target_type === "img") {
+    let field = ev.target;
-            cell = ev.target.parentNode;
+    if (field) {
-        }
+        if (field.classList.contains('drawn')) {
-
+            field.classList.remove('drawn');
-        if (cell) {
-            if (cell.classList.contains('drawn')) {
-                cell.classList.remove('drawn');
-            } else {
-                cell.classList.add('drawn');
-            }
         } else {
-            console.error('Sum ting wong (* ￣︿￣)');
+            field.classList.add('drawn');
+            checkForBingo(field);
         }
+    } else {
+        console.error('Sum ting wong (* ￣︿￣)');
+    }
+};
+
+const drawTable = () => {
+    shuffleBoard().forEach((field, index) => {
+        bingoFields[index].textContent = field;
+        bingoFields[index].addEventListener('click', drawBingoFieldEventHandler);
     });
 
     seed_elem.innerText = seed;
     window.history.pushState(null, null, '?seeed=' + seed);
-
-    const center_field = document.querySelector('.center-field');
-    center_field.innerHTML = '<img src="img/7-vs-wild-logo.svg" alt="7 vs. Wild Logo">'
 }
 
 // hash function, thx stackoverflow :3
@@ -181,9 +197,10 @@ function mulberry32(a) {
 
 drawTable();
 
-const refreshBingoButton = document.querySelector('#refresh-bingo');
+
 const redrawTable = function () {
+    bingoFields.forEach(elem => elem.classList.remove('drawn'));
     seed = Date.now().toString();
-    drawTable()
+    drawTable();
 }
 refreshBingoButton.addEventListener('click', redrawTable)

style.css

@@ -47,7 +47,7 @@ h1, p {
     margin: 5px;
 }
 
-p#seeed{
+p#seeed {
     user-select: text;
 }