commit 5c8296fbe31c8d0d88252b9d7b22c42fcec6e683
Author: Marcel <kingofdog@web.de>
Date:   Sat Apr 6 19:19:26 2019 +0200

    Initial commit

diff --git a/assets/game_over.wav b/assets/game_over.wav
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index 0000000..57956ec
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diff --git a/assets/hit_ball.wav b/assets/hit_ball.wav
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index 0000000..c05d2a5
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diff --git a/assets/hit_block.wav b/assets/hit_block.wav
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diff --git a/assets/hit_coin.wav b/assets/hit_coin.wav
new file mode 100644
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diff --git a/assets/round_success.wav b/assets/round_success.wav
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index 0000000..262b970
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diff --git a/ball.js b/ball.js
new file mode 100644
index 0000000..0d14a0d
--- /dev/null
+++ b/ball.js
@@ -0,0 +1,107 @@
+class Ball {
+    constructor(game, cx, cy, v, dir) {
+        this.game = game;
+        this.id = this.game.balls.length;
+        this.cx = cx;
+        this.cy = cy;
+        this.vx = v * Math.cos(dir);
+        this.vy = v * Math.sin(dir);
+        this.collide = true;
+    }
+
+    update(stepCount = 10) {
+        if (!this.game.isMoving)
+            return;
+
+        for (let i = 0; i < stepCount; i++) {
+            this.cx += this.vx / stepCount;
+            this.cy -= this.vy / stepCount;
+
+            if (this.cx - this.game.ballRadius <= 0 || this.cx + this.game.ballRadius >= this.game.canvas.width) {
+                this.vx *= -1;
+            }
+
+            if (this.cy - this.game.ballRadius <= 0) {
+                this.vy *= -1;
+            }
+
+            if (this.cy >= this.game.originY && this.vy < 0) {
+                this.vy = 0;
+                this.cy = this.game.originY;
+
+                if (this.game.newOriginX === null || this.cx === this.game.newOriginX) {
+                    this.game.newOriginX = this.cx;
+                    this.vy = 0;
+                    this.remove();
+                } else {
+                    this.vx = (this.game.newOriginX - this.cx) / 60 * 2;
+                    setTimeout(() => {
+                        this.vx = 0;
+                        this.remove();
+                    }, 500);
+                }
+            }
+
+            if (this.collide) {
+                this.game.rects.forEach(rect => {
+                    this.checkHitRect(rect);
+                });
+
+                this.game.powerUps.forEach(powerUp => {
+                    this.checkHitPowerUp(powerUp);
+                });
+            }
+        }
+    }
+
+    remove() {
+        this.game.balls.splice(this.game.balls.findIndex(ball => ball === this), 1);
+
+        if (this.game.isMoving && this.game.balls.length === 0) {
+            this.game.roundOver();
+        }
+    }
+
+    checkHitRect(rect) {
+        const closestX = Math.clamp(this.cx, rect.x, rect.x + this.game.rectSize);
+        const closestY = Math.clamp(this.cy, rect.y, rect.y + this.game.rectSize);
+
+        const distX = this.cx - closestX;
+        const distY = this.cy - closestY;
+
+        const distSquared = (distX ** 2) + (distY ** 2);
+
+        if (distSquared < this.game.ballRadius ** 2) {
+            const collBottom = rect.y + this.game.rectSize - (this.cy - this.game.ballRadius);
+            const collTop = (this.cy + this.game.ballRadius) - rect.y;
+            const collLeft = (this.cx + this.game.ballRadius) - rect.x;
+            const collRight = rect.x + this.game.rectSize - (this.cx - this.game.ballRadius);
+
+            if ((collTop <= collLeft && collTop <= collRight) || (collBottom <= collLeft && collBottom <= collRight)) {
+                this.vy *= -1;
+            } else {
+                this.vx *= -1;
+            }
+
+            rect.hit(this);
+        }
+    }
+
+    checkHitPowerUp(powerUp) {
+        const distX = this.cx - powerUp.cx;
+        const distY = this.cy - powerUp.cy;
+
+        const distSquared = (distX ** 2) + (distY ** 2);
+
+        if (distSquared < (this.game.ballRadius + this.game.powerUpRadius) ** 2) {
+            powerUp.hit();
+        }
+    }
+
+    draw() {
+        this.game.ctx.fillStyle = '#fff';
+        this.game.ctx.beginPath();
+        this.game.ctx.arc(this.cx, this.cy, this.game.ballRadius, 0, 2 * Math.PI);
+        this.game.ctx.fill();
+    }
+}
diff --git a/game.js b/game.js
new file mode 100644
index 0000000..b7b951e
--- /dev/null
+++ b/game.js
@@ -0,0 +1,298 @@
+class Game {
+    constructor(container) {
+        this.elements = {
+            highscore: container.querySelector('#highscore'),
+            score: container.querySelector('#score'),
+            coinCount: container.querySelector('#coin-count'),
+            pauseBtn: container.querySelector('.play-btn'),
+            pauseMenu: container.querySelector('#pause-menu'),
+            gameOverMenu: container.querySelector('#game-over-menu'),
+        };
+
+        this.canvas = container.querySelector('#canvas');
+        this.ctx = this.canvas.getContext('2d');
+        this.width = this.canvas.width;
+        this.height = this.canvas.height;
+
+        this.colCount = 7;
+        this.rowCount = 7;
+        this.rectSize = this.width / this.colCount;
+
+        this.originX = this.width / 2;
+        this.originY = (this.rowCount + 2) * this.rectSize;
+        this.newOriginX = null;
+
+        this.ballRadius = 12;
+        this.ballVelocity = 15;
+
+        this.powerUpRadius = 15;
+
+        this.rects = [];
+        this.powerUps = [];
+        this.balls = [];
+
+        this.roundNumber = 0;
+        this.ballCount = 1;
+
+        this.remainingBalls = this.ballCount;
+        this.newBalls = 0;
+        this.isMoving = false;
+        this.isPaused = false;
+        this.isGameOver = false;
+
+        this.coinAngle = 0;
+        this.mousePos = null;
+
+        this.addEventListeners();
+    }
+
+    addEventListeners() {
+        this.canvas.addEventListener('mousedown', (e) => {
+            this.mousePos = cbRelMousePos(e);
+        });
+
+        this.canvas.addEventListener('mousemove', (e) => {
+            if (this.mousePos) {
+                this.mousePos = cbRelMousePos(e);
+            }
+        });
+
+        this.canvas.addEventListener('mouseup', (e) => {
+            this.mousePos = cbRelMousePos(e);
+            this.shoot().then(() => {
+                this.mousePos = null;
+            });
+        });
+
+        this.elements.pauseBtn.addEventListener('click', () => {
+            if (this.isPaused) {
+                this.play();
+            } else {
+                this.pause();
+            }
+        });
+    }
+
+    removeEventListeners() {
+
+    }
+
+    draw() {
+        this.ctx.clearRect(0, 0, this.width, this.height);
+        this.drawBase();
+
+        this.rects.forEach(rect => rect.draw());
+        this.powerUps.forEach(powerUp => powerUp.draw());
+        this.balls.forEach(ball => ball.draw());
+
+        this.drawOrigin();
+
+        if (!this.isPaused) {
+            requestAnimationFrame(() => this.draw());
+        }
+    }
+
+    drawBase() {
+        const y = this.originY + this.ballRadius;
+        const height = this.height - this.originY - this.ballRadius;
+
+        this.ctx.fillStyle = 'rgba(0,0,0,.15)';
+        this.ctx.fillRect(0, y, this.width, height);
+    }
+
+    drawOrigin() {
+        if (this.originX !== null) {
+            if (!this.isMoving && this.mousePos !== null) {
+                this.drawShootingLine();
+            }
+
+            this.ctx.fillStyle = '#fff';
+            this.ctx.fillCircle(this.originX, this.originY, this.ballRadius);
+
+            if (this.remainingBalls > 0) {
+                this.ctx.fillText(this.remainingBalls + 'x', this.originX, this.originY + 50);
+            }
+        }
+
+        if (this.newOriginX !== null) {
+            this.ctx.fillStyle = '#fff';
+            this.ctx.fillCircle(this.newOriginX, this.originY, this.ballRadius);
+        }
+    }
+
+    drawShootingLine() {
+        const dir = this.calcMouseAngle();
+        let curX = this.originX;
+        let curY = this.originY;
+
+        for (let i = 0; i < 10; i++) {
+            const alpha = 1 - (i / 20);
+            this.ctx.fillStyle = `rgba(255,255,255,${alpha})`;
+            this.ctx.beginPath();
+            this.ctx.arc(curX, curY, this.ballRadius, 0, 2 * Math.PI);
+            this.ctx.fill();
+
+            curX += Math.cos(dir) * this.ballRadius * 4;
+            curY -= Math.sin(dir) * this.ballRadius * 4;
+        }
+    }
+
+    calcMouseAngle() {
+        const dx = this.mousePos.x - this.originX,
+            dy = this.originY - this.mousePos.y;
+
+        let dir = Math.atan(dy / dx);
+        if (dx < 0)
+            dir += Math.PI;
+
+        dir = Math.min(Math.max(dir, .05), Math.PI - 0.05);
+        return dir;
+    }
+
+    async shoot() {
+        if (this.isMoving || this.mousePos >= this.originY) {
+            return;
+        }
+
+        this.isMoving = true;
+
+        const dir = this.calcMouseAngle();
+        const ballCount = this.ballCount;
+        for (let i = 0; i < ballCount; i++) {
+            const ball = new Ball(this, this.originX, this.originY, this.ballVelocity, dir);
+            this.balls.push(ball);
+            this.remainingBalls--;
+            if (this.remainingBalls === 0) {
+                this.originX = null;
+            }
+            await sleep(100);
+        }
+
+    }
+
+    roundOver() {
+        this.ballCount += this.newBalls;
+        this.newBalls = 0;
+        this.remainingBalls = this.ballCount;
+        this.originX = this.newOriginX;
+        this.newOriginX = null;
+
+        this.increaseRoundNumber();
+        this.addNewObjects();
+        this.shiftObjectsDown();
+
+        sounds.roundOver.play();
+
+        setTimeout(() => {
+            this.isMoving = false;
+        }, 500);
+    }
+
+    gameOver() {
+        this.isGameOver = true;
+        coinCount += Math.floor((this.roundNumber - this.rowCount) / 10);
+
+        this.elements.gameOverMenu.classList.add('shown');
+
+        onGameOver();
+    }
+
+    addNewObjects() {
+        const spawnBall = Math.random() < .5,
+            ballPos = spawnBall ? Math.round(Math.random() * (this.colCount - 1)) : null,
+            spawnCoin = Math.random() < .33,
+            coinPos = spawnCoin ? Math.round(Math.random() * (this.colCount - 1)) : null;
+
+        for (let i = 0; i < this.colCount; i++) {
+            if (spawnBall && ballPos === i) {
+                this.powerUps.push(new PowerUpBall(this, (i + .5) * this.rectSize, .5 * this.rectSize));
+                continue;
+            }
+
+            if (spawnCoin && coinPos === i) {
+                this.powerUps.push(new PowerUpCoin(this, (i + .5) * this.rectSize, .5 * this.rectSize));
+                continue;
+            }
+
+            if (Math.random() < .6) {
+                const number = Math.random() < .6 ? this.roundNumber : 2 * this.roundNumber;
+                this.rects.push(new Rect(this, i * this.rectSize, 0, number));
+            }
+        }
+    }
+
+    shiftObjectsDown() {
+        this.rects.forEach(rect => {
+            moveObject(rect, 0, this.rectSize, 500);
+
+            if (rect.y + 2 * this.rectSize >= this.originY) {
+                this.gameOver();
+            }
+        });
+
+        this.powerUps.forEach(powerUp => {
+            moveObject(powerUp, 0, this.rectSize, 500);
+
+            if (powerUp.cy + this.rectSize >= this.originY) {
+                setTimeout(() => {
+                    powerUp.remove();
+                });
+            }
+        })
+    }
+
+    increaseRoundNumber() {
+        this.roundNumber++;
+
+        this.elements.score.innerText = this.roundNumber;
+    }
+
+    increaseCoinCount() {
+        coinCount++;
+
+        this.elements.coinCount.innerText = coinCount;
+    }
+
+    update() {
+        this.balls.forEach(ball => {
+            ball.update(10);
+        });
+
+        this.coinAngle += .05;
+        if (this.coinAngle >= 2 * Math.PI) {
+            this.coinAngle -= 2 * Math.PI;
+        }
+
+        if (!this.isPaused && !this.isGameOver) {
+            requestAnimationFrame(() => this.update());
+        }
+    }
+
+    start() {
+        this.increaseRoundNumber();
+        this.addNewObjects();
+        this.shiftObjectsDown();
+        this.play()
+    }
+
+    play() {
+        this.isPaused = false;
+        this.update();
+        this.draw();
+
+        this.elements.pauseBtn.classList.add('paused');
+        this.elements.pauseMenu.classList.remove('shown');
+    }
+
+    pause() {
+        this.isPaused = true;
+
+        this.elements.pauseBtn.classList.remove('paused');
+        this.elements.pauseMenu.classList.add('shown');
+    }
+
+    destroy() {
+        this.removeEventListeners();
+    }
+
+}
diff --git a/helper-functions.js b/helper-functions.js
new file mode 100644
index 0000000..0246501
--- /dev/null
+++ b/helper-functions.js
@@ -0,0 +1,120 @@
+function sleep(ms) {
+    return new Promise(resolve => setTimeout(resolve, ms));
+}
+
+function moveObject(object, amountX, amountY, time) {
+    let counter = 0;
+    const step = time / 1000 * 60;
+    const stepX = amountX / step;
+    const stepY = amountY / step;
+
+    let goalX;
+    let goalY;
+    if (object.hasOwnProperty('cx') && object.hasOwnProperty('cy')) {
+        goalX = object.cx + amountX;
+        goalY = object.cy + amountY;
+    } else {
+        goalX = object.x + amountX;
+        goalY = object.y + amountY;
+    }
+
+    const interval = setInterval(() => {
+        if (object.hasOwnProperty('cx') && object.hasOwnProperty('cy')) {
+            object.cx += stepX;
+            object.cy += stepY;
+        } else {
+            object.x += stepX;
+            object.y += stepY;
+        }
+        counter++;
+
+        if (counter >= step) {
+            clearInterval(interval);
+
+            if (object.hasOwnProperty('cx') && object.hasOwnProperty('cy')) {
+                object.cx = goalX;
+                object.cy = goalY;
+            } else {
+                object.x = goalX;
+                object.y = goalY;
+            }
+        }
+    }, 1000 / 60);
+}
+
+function calculateColor(number) {
+    let minHue;
+    let maxHue;
+    let percentage;
+    if (number < 10) {
+        minHue = 25;
+        maxHue = 35;
+        percentage = number / 10;
+    } else if (number < 20) {
+        minHue = 60;
+        maxHue = 80;
+        percentage = (number - 10) / 10;
+    } else if (number < 50) {
+        minHue = 310;
+        maxHue = 340;
+        percentage = (number - 20) / 30;
+    } else if (number < 100) {
+        minHue = 35;
+        maxHue = 65;
+        percentage = (number - 50) / 50;
+    } else if (number < 200) {
+        minHue = 260;
+        maxHue = 280;
+        percentage = (number - 100) / 100;
+    }
+    const hue = (percentage * (maxHue - minHue)) + minHue;
+    return `hsl(${hue}, 100%, 50%)`;
+}
+
+function cbElementPos(event) {
+    event = event || window.event;
+    let obj = event.target || event.srcElement,
+        x = 0,
+        y = 0;
+    while (obj.offsetParent) {
+        x += obj.offsetLeft;
+        y += obj.offsetTop;
+        obj = obj.offsetParent;
+    }
+    return {x, y};
+}
+
+function cbMousePos(event) {
+    event = event || window.event;
+    return {
+        x: event.pageX || event.clientX + document.body.scrollLeft + document.documentElement.scrollLeft,
+        y: event.pageY || event.clientY + document.body.scrollTop + document.documentElement.scrollTop,
+    }
+}
+
+function cbRelMousePos(event) {
+    const elem = cbElementPos(event),
+        mouse = cbMousePos(event);
+    return {
+        x: (mouse.x - elem.x),
+        y: (mouse.y - elem.y),
+    };
+}
+
+window.requestAnimationFrame = window.requestAnimationFrame ||
+    window.webkitRequestAnimationFrame ||
+    window.msRequestAnimationFrame ||
+    window.mozRequestAnimationFrame ||
+    function (callback) {
+        return setTimeout(callback, 1000 / 60);
+    };
+
+Math.clamp = function (a, b, c) {
+    return Math.max(b, Math.min(c, a));
+};
+
+CanvasRenderingContext2D.prototype.fillCircle = function (cx, cy, radius) {
+    this.beginPath();
+    this.arc(cx, cy, radius, 0, 2 * Math.PI);
+    this.fill();
+};
diff --git a/index.html b/index.html
new file mode 100644
index 0000000..578386d
--- /dev/null
+++ b/index.html
@@ -0,0 +1,63 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <title>Ballz.js</title>
+    <link href="style.css" rel="stylesheet">
+</head>
+<body>
+
+<div class="container">
+    <div class="details">
+        <div class="menu-btn-container">
+            <div class="play-btn">
+                <div class="pause-btn"></div>
+            </div>
+        </div>
+
+        <div class="high-score-container">
+            <span class="details-title">Best:</span>
+            <h3 id="highscore">0</h3>
+        </div>
+
+        <div class="score-container">
+            <h1 id="score">0</h1>
+        </div>
+
+        <div class="coin-container">
+            <span class="details-title">Coins:</span>
+            <h3 id="coin-count">0</h3>
+        </div>
+
+        <div></div>
+    </div>
+
+    <div class="game-container">
+        <canvas id="canvas" width="500" height="800"></canvas>
+
+        <div class="game-overlay" id="pause-menu">
+            <h2 class="game-overlay-title">Pausing</h2>
+
+            <div class="game-overlay-btns">
+
+                <button class="btn primary">Resume</button>
+                <button class="btn danger">Main Menu</button>
+
+            </div>
+        </div>
+
+        <div class="game-overlay" id="game-over-menu">
+
+        </div>
+    </div>
+</div>
+
+<script src="helper-functions.js"></script>
+<script src="rect.js"></script>
+<script src="powerup-ball.js"></script>
+<script src="powerup-coin.js"></script>
+<script src="ball.js"></script>
+<script src="game.js"></script>
+<script src="main.js"></script>
+</body>
+</html>
diff --git a/main.js b/main.js
new file mode 100644
index 0000000..2169ceb
--- /dev/null
+++ b/main.js
@@ -0,0 +1,17 @@
+const sounds = {
+    hitBlock: new Audio('assets/hit_block.wav'),
+    hitCoin: new Audio('assets/hit_coin.wav'),
+    hitBall: new Audio('assets/hit_ball.wav'),
+    roundOver: new Audio('assets/round_success.wav'),
+    gameOver: new Audio('assets/game_over.wav')
+};
+
+let coinCount = 0;
+
+const container = document.getElementsByClassName('container')[0];
+const game = new Game(container);
+game.start();
+
+function onGameOver() {
+
+}
diff --git a/powerup-ball.js b/powerup-ball.js
new file mode 100644
index 0000000..3025c28
--- /dev/null
+++ b/powerup-ball.js
@@ -0,0 +1,36 @@
+class PowerUpBall {
+    constructor(game, cx, cy) {
+        this.game = game;
+        this.cx = cx;
+        this.cy = cy;
+        this.anim = 0.1;
+        this.animChange = 0.025;
+    }
+
+    draw() {
+        this.game.ctx.fillStyle = '#fff';
+        this.game.ctx.strokeStyle = '#fff';
+        this.game.ctx.beginPath();
+        this.game.ctx.arc(this.cx, this.cy, this.game.powerUpRadius * .6, 0, 2 * Math.PI);
+        this.game.ctx.fill();
+
+        this.game.ctx.beginPath();
+        this.game.ctx.arc(this.cx, this.cy, this.game.powerUpRadius * (.6 + this.anim), 0, 2 * Math.PI);
+        this.game.ctx.stroke();
+
+        this.anim = this.anim + this.animChange;
+        if (this.anim >= .4 || this.anim <= 0.1) {
+            this.animChange *= -1;
+        }
+    }
+
+    hit() {
+        sounds.hitBall.play();
+        this.game.newBalls++;
+        this.remove();
+    }
+
+    remove() {
+        this.game.powerUps.splice(this.game.powerUps.findIndex(powerUp => powerUp === this), 1);
+    }
+}
diff --git a/powerup-coin.js b/powerup-coin.js
new file mode 100644
index 0000000..e8623b3
--- /dev/null
+++ b/powerup-coin.js
@@ -0,0 +1,24 @@
+class PowerUpCoin {
+    constructor(game, cx, cy) {
+        this.game = game;
+        this.cx = cx;
+        this.cy = cy;
+    }
+
+    draw() {
+        this.game.ctx.fillStyle = '#fa0';
+        this.game.ctx.beginPath();
+        this.game.ctx.ellipse(this.cx, this.cy, Math.abs(this.game.powerUpRadius * Math.cos(this.game.coinAngle)), this.game.powerUpRadius, 0, 0, 2 * Math.PI);
+        this.game.ctx.fill();
+    }
+
+    hit() {
+        sounds.hitCoin.play();
+        this.game.increaseCoinCount();
+        this.remove();
+    }
+
+    remove() {
+        this.game.powerUps.splice(this.game.powerUps.findIndex(powerUp => powerUp === this), 1);
+    }
+}
diff --git a/rect.js b/rect.js
new file mode 100644
index 0000000..394b076
--- /dev/null
+++ b/rect.js
@@ -0,0 +1,37 @@
+class Rect {
+    constructor(game, x, y, number) {
+        this.game = game;
+        this.x = x;
+        this.y = y;
+        this.number = number;
+        this.color = calculateColor(number);
+        this.lastHits = {};
+    }
+
+    draw() {
+        this.game.ctx.fillStyle = this.color;
+        this.game.ctx.fillRect(this.x + 2, this.y + 2, this.game.rectSize - 4, this.game.rectSize - 4);
+
+        this.game.ctx.fillStyle = '#000';
+        this.game.ctx.font = '20px Roboto, Arial, sans-serif';
+        this.game.ctx.textAlign = 'center';
+        this.game.ctx.textBaseline = 'middle';
+        this.game.ctx.fillText(this.number, this.x + this.game.rectSize / 2, this.y + this.game.rectSize / 2);
+    }
+
+    hit(ball) {
+        if (this.lastHits[ball.id] && Date.now() - this.lastHits[ball.id] < 100) {
+            return;
+        }
+
+        this.number--;
+        this.color = calculateColor(this.number);
+        sounds.hitBlock.play();
+
+        if (this.number <= 0) {
+            this.game.rects.splice(this.game.rects.findIndex(rect => rect === this), 1);
+        }
+
+        this.lastHits[ball.id] = Date.now();
+    }
+}
diff --git a/style.css b/style.css
new file mode 100644
index 0000000..dab9793
--- /dev/null
+++ b/style.css
@@ -0,0 +1,171 @@
+body {
+    width: 100%;
+    height: 100%;
+    margin: 0;
+    background: #333;
+}
+
+* {
+    color: #fff;
+    font-family: Roboto, Arial, sans-serif;
+    font-weight: 500;
+}
+
+.btn {
+    padding: 10px 20px;
+    border: none;
+    border-radius: 10px;
+    background: none;
+    color: #fff;
+    box-shadow: none;
+    font-size: 16px;
+    cursor: pointer;
+}
+
+.btn.primary {
+    background: #2272ff;
+}
+
+.btn.danger {
+    background: #F72754;
+}
+
+.container {
+    display: block;
+    width: 100%;
+    max-width: 500px;
+    margin: 10px auto;
+}
+
+.details {
+    display: grid;
+    grid-template-columns: 1fr 2fr 2fr 1fr 1fr;
+}
+
+.details h1, .details h3, .details .details-title {
+    display: block;
+    width: 100%;
+    margin: 0;
+    text-align: center;
+}
+
+.menu-btn-container {
+    display: block;
+}
+
+.menu-btn-container .play-btn {
+    position: relative;
+    display: block;
+    overflow: hidden;
+    width: 20px;
+    height: 20px;
+    margin: 10px auto;
+    cursor: pointer;
+}
+
+.menu-btn-container .play-btn::before, .menu-btn-container .play-btn::after {
+    position: absolute;
+    top: 0;
+    z-index: -1;
+    width: 51%;
+    height: 100%;
+    background: #ffffff;
+    content: "";
+    transition: .3s;
+    will-change: transform;
+}
+
+.menu-btn-container .play-btn::before {
+    left: 0;
+}
+
+.menu-btn-container .play-btn::after {
+    right: 0;
+}
+
+.menu-btn-container .play-btn.paused::before {
+    -moz-transform: translateX(-25%);
+    -ms-transform: translateX(-25%);
+    -o-transform: translateX(-25%);
+    -webkit-transform: translateX(-25%);
+    transform: translateX(-25%);
+}
+
+.menu-btn-container .play-btn.paused::after {
+    transform: translateX(25%)
+}
+
+.menu-btn-container .play-btn.paused .pause-btn::before, .menu-btn-container .play-btn.paused .pause-btn::after {
+    transform: rotate(0);
+}
+
+.menu-btn-container .play-btn .pause-btn::before, .menu-btn-container .play-btn .pause-btn::after {
+    position: absolute;
+    width: 150%;
+    height: 100%;
+    background: #333;
+    outline: 1px solid transparent;
+    content: "";
+    transition: .3s;
+}
+
+.menu-btn-container .play-btn .pause-btn::before {
+    top: -100%;
+    transform: rotate(26.5deg);
+    transform-origin: 0 100%;
+}
+
+.menu-btn-container .play-btn .pause-btn::after {
+    top: 100%;
+    transform: rotate(-26.5deg);
+    transform-origin: 0 0;
+}
+
+.game-container {
+    position: relative;
+}
+
+#canvas {
+    display: block;
+    margin: 20px auto;
+    border-radius: 10px;
+    background: rgba(255, 255, 255, .2);
+}
+
+.game-container .game-overlay {
+    position: absolute;
+    top: 0;
+    left: 0;
+    transform: translateY(100%);
+    width: 100%;
+    height: 100%;
+    border-radius: 10px;
+    background: #555;
+    opacity: 0;
+    pointer-events: none;
+    transition: .3s;
+}
+
+.game-container .game-overlay.shown {
+    transform: none;
+    opacity: 1;
+    pointer-events: all;
+}
+
+.game-container .game-overlay .game-overlay-title {
+    margin: 45% 25px 50px;
+    font-size: 25px;
+    text-align: center;
+}
+
+.game-container .game-overlay .game-overlay-btns {
+    display: block;
+    width: 50%;
+    margin: 25px auto;
+}
+
+.game-container .game-overlay .game-overlay-btns .btn {
+    display: block;
+    width: 100%;
+    margin: 16px 0 0;
+}
diff --git a/temp.js b/temp.js
new file mode 100644
index 0000000..e321116
--- /dev/null
+++ b/temp.js
@@ -0,0 +1,205 @@
+// const canvas = document.getElementById('canvas');
+// const ctx = canvas.getContext('2d');
+//
+// let width = 500,
+//     height = 800;
+//
+// const rectSize = width / 7,
+//     ballRadius = 12,
+//     powerUpRadius = 15,
+//     ballVelocity = 15,
+//     frameRate = 60;
+//
+// const sounds = {
+// };
+//
+// let roundNumber = 0;
+//
+// const rects = [];
+// const powerUps = [];
+// let balls = [];
+// let ballCount = 1;
+// let remainingBalls;
+// let newBalls = 0;
+// let originX;
+// let newOriginX = 250;
+// const originY = 9 * rectSize;
+// let isMoving = false;
+//
+// let coinAngle = 0;
+//
+// let mousePos = null;
+//
+// function drawShootingLine() {
+//     const dx = mousePos.x - originX;
+//     const dy = originY - mousePos.y;
+//     let angle = Math.atan(dy / dx);
+//     let curX = originX;
+//     let curY = originY;
+//
+//     if (dx < 0)
+//         angle += Math.PI;
+//
+//     angle = Math.min(Math.max(angle, 0.05), Math.PI - 0.05);
+//
+//     ctx.fillStyle = 'rgba(255, 255, 255, .5)';
+//     for (let i = 0; i < 10; i++) {
+//         ctx.beginPath();
+//         ctx.arc(curX, curY, ballRadius, 0, 2 * Math.PI);
+//         ctx.fill();
+//
+//         curX += ballRadius * 4 * Math.cos(angle);
+//         curY -= ballRadius * 4 * Math.sin(angle);
+//     }
+// }
+//
+// function update() {
+//     balls.forEach(ball => {
+//         ball.update(10);
+//     });
+//
+//     coinAngle += .05;
+//
+//     requestAnimationFrame(update);
+// }
+//
+// function draw() {
+//     ctx.clearRect(0, 0, canvas.width, canvas.height);
+//
+//     ctx.fillStyle = 'rgba(0,0,0,.15)';
+//     ctx.fillRect(0, originY + ballRadius, width, height - originX - ballRadius);
+//
+//     rects.forEach(rect => rect.draw());
+//
+//     powerUps.forEach(powerUp => powerUp.draw());
+//
+//     if (originX !== null) {
+//         if (!isMoving && mousePos !== null) {
+//             drawShootingLine();
+//         }
+//
+//         ctx.fillStyle = '#fff';
+//         ctx.beginPath();
+//         ctx.arc(originX, originY, ballRadius, 0, 2 * Math.PI);
+//         ctx.fill();
+//
+//         if (remainingBalls > 0) {
+//             ctx.fillText(`${remainingBalls}x`, originX, originY + 50);
+//         } else {
+//             originX = null;
+//         }
+//     }
+//     if(newOriginX !== null) {
+//         ctx.fillStyle = '#fff';
+//         ctx.beginPath();
+//         ctx.arc(newOriginX, originY, ballRadius, 0, 2 * Math.PI);
+//         ctx.fill();
+//     }
+//
+//     balls.forEach(ball => {
+//         ball.draw();
+//     });
+//
+//     requestAnimationFrame(draw);
+// }
+//
+// onRoundEnd();
+// update();
+// draw();
+//
+// canvas.addEventListener('mousemove', (e) => {
+//     mousePos = cbRelMousePos(e);
+// });
+//
+// canvas.addEventListener('click', (e) => {
+//     mousePos = cbRelMousePos(e);
+//     shoot();
+// });
+//
+// async function shoot() {
+//     if (isMoving)
+//         return;
+//
+//     if (mousePos.y >= originY)
+//         return;
+//
+//     isMoving = true;
+//     const dx = mousePos.x - originX,
+//         dy = originY - mousePos.y;
+//     let dir = Math.atan(dy / dx);
+//     if (dx < 0) {
+//         dir += Math.PI;
+//     }
+//
+//     dir = Math.min(Math.max(dir, 0.05), Math.PI - 0.05);
+//
+//     for (let i = 0; i < ballCount; i++) {
+//         balls.push(new Ball(originX, originY, ballVelocity, dir));
+//         remainingBalls--;
+//         await sleep(100);
+//     }
+// }
+//
+// function onRoundEnd() {
+//     isMoving = false;
+//     roundNumber++;
+//     ballCount += newBalls;
+//     newBalls = 0;
+//     remainingBalls = ballCount;
+//     originX = newOriginX;
+//     newOriginX = null;
+//
+//     rects.forEach(rect => {
+//         moveObject(rect, 0, rectSize, 500);
+//
+//         if(rect.y + 2 * rectSize >= originY) {
+//             gameOver();
+//         }
+//     });
+//
+//     powerUps.forEach(powerUp => {
+//         moveObject(powerUp, 0, rectSize, 500);
+//
+//         if(powerUp.cy + rectSize >= originY) {
+//             setTimeout(() => {
+//                 powerUp.remove();
+//             }, 500);
+//         }
+//     });
+//
+//     const cols = width / rectSize;
+//     const spawnBall = Math.random() < .5;
+//     const ballPos = spawnBall ? Math.round(Math.random() * (width / rectSize - 1)) : null;
+//     const spawnCoin = Math.random() < .33;
+//     const coinPos = spawnCoin ? Math.round(Math.random() * (width / rectSize - 1)) : null;
+//     for (let i = 0; i < cols; i++) {
+//         if (spawnBall && i === ballPos) {
+//             const powerUp = new PowerUpBall((i + .5) * rectSize, .5 * rectSize);
+//             powerUps.push(powerUp);
+//
+//             moveObject(powerUp, 0, rectSize, 500);
+//         } else if (spawnCoin && i === coinPos) {
+//             const powerUp = new PowerUpCoin((i + .5) * rectSize, .5 * rectSize);
+//             powerUps.push(powerUp);
+//
+//             moveObject(powerUp, 0, rectSize, 500);
+//         } else {
+//             if (Math.random() < .6) {
+//                 const number = Math.random() < .5 ? roundNumber : 2 * roundNumber;
+//                 const rect = new Rect(i * rectSize, 0, number);
+//                 rects.push(rect);
+//
+//                 moveObject(rect, 0, rectSize, 500);
+//             }
+//         }
+//     }
+//
+//     sounds.roundOver.play();
+// }
+//
+//
+// function gameOver() {
+// }
+//
+//
+