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avinashboy · Feb 19, 2020 · 04a01eb · 04a01eb
commit 04a01eb
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diff --git a/index.html b/index.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <meta http-equiv="X-UA-Compatible" content="ie=edge" />
+    <link rel="stylesheet" href="style.css" />
+    <title>Breakout!</title>
+  </head>
+  <body>
+    <canvas id="canvas" width="800" height="600"></canvas>
+
+    <script src="script.js"></script>
+  </body>
+</html>
diff --git a/script.js b/script.js
@@ -0,0 +1,223 @@
+const rulesBtn = document.getElementById('rules-btn');
+const closeBtn = document.getElementById('close-btn');
+const rules = document.getElementById('rules');
+const canvas = document.getElementById('canvas');
+const ctx = canvas.getContext('2d');
+
+let score = 0;
+
+const brickRowCount = 9;
+const brickColumnCount = 5;
+
+// Create ball props
+const ball = {
+  x: canvas.width / 2,
+  y: canvas.height / 2,
+  size: 10,
+  speed: 5,
+  dx: 4,
+  dy: -4
+};
+
+// Create paddle props
+const paddle = {
+  x: canvas.width / 2 - 40,
+  y: canvas.height - 20,
+  w: 80,
+  h: 10,
+  speed: 8,
+  dx: 0
+};
+
+// Create brick props
+const brickInfo = {
+  w: 70,
+  h: 20,
+  padding: 10,
+  offsetX: 45,
+  offsetY: 60,
+  visible: true
+};
+
+// Create bricks
+const bricks = [];
+for (let i = 0; i < brickRowCount; i++) {
+  bricks[i] = [];
+  for (let j = 0; j < brickColumnCount; j++) {
+    const x = i * (brickInfo.w + brickInfo.padding) + brickInfo.offsetX;
+    const y = j * (brickInfo.h + brickInfo.padding) + brickInfo.offsetY;
+    bricks[i][j] = { x, y, ...brickInfo };
+  }
+}
+
+// Draw ball on canvas
+function drawBall() {
+  ctx.beginPath();
+  ctx.arc(ball.x, ball.y, ball.size, 0, Math.PI * 2);
+  ctx.fillStyle = '#0095dd';
+  ctx.fill();
+  ctx.closePath();
+}
+
+// Draw paddle on canvas
+function drawPaddle() {
+  ctx.beginPath();
+  ctx.rect(paddle.x, paddle.y, paddle.w, paddle.h);
+  ctx.fillStyle = '#0095dd';
+  ctx.fill();
+  ctx.closePath();
+}
+
+// Draw score oon canvas
+function drawScore() {
+  ctx.font = '20px Arial';
+  ctx.fillText(`Score: ${score}`, canvas.width - 100, 30);
+}
+
+// Draw bricks on canvas
+function drawBricks() {
+  bricks.forEach(column => {
+    column.forEach(brick => {
+      ctx.beginPath();
+      ctx.rect(brick.x, brick.y, brick.w, brick.h);
+      ctx.fillStyle = brick.visible ? '#0095dd' : 'transparent';
+      ctx.fill();
+      ctx.closePath();
+    });
+  });
+}
+
+// Move paddle on canvas
+function movePaddle() {
+  paddle.x += paddle.dx;
+
+  // Wall detection
+  if (paddle.x + paddle.w > canvas.width) {
+    paddle.x = canvas.width - paddle.w;
+  }
+
+  if (paddle.x < 0) {
+    paddle.x = 0;
+  }
+}
+
+// Move ball on canvas
+function moveBall() {
+  ball.x += ball.dx;
+  ball.y += ball.dy;
+
+  // Wall collision (right/left)
+  if (ball.x + ball.size > canvas.width || ball.x - ball.size < 0) {
+    ball.dx *= -1; // ball.dx = ball.dx * -1
+  }
+
+  // Wall collision (top/bottom)
+  if (ball.y + ball.size > canvas.height || ball.y - ball.size < 0) {
+    ball.dy *= -1;
+  }
+
+  // console.log(ball.x, ball.y);
+
+  // Paddle collision
+  if (
+    ball.x - ball.size > paddle.x &&
+    ball.x + ball.size < paddle.x + paddle.w &&
+    ball.y + ball.size > paddle.y
+  ) {
+    ball.dy = -ball.speed;
+  }
+
+  // Brick collision
+  bricks.forEach(column => {
+    column.forEach(brick => {
+      if (brick.visible) {
+        if (
+          ball.x - ball.size > brick.x && // left brick side check
+          ball.x + ball.size < brick.x + brick.w && // right brick side check
+          ball.y + ball.size > brick.y && // top brick side check
+          ball.y - ball.size < brick.y + brick.h // bottom brick side check
+        ) {
+          ball.dy *= -1;
+          brick.visible = false;
+
+          increaseScore();
+        }
+      }
+    });
+  });
+
+  // Hit bottom wall - Lose
+  if (ball.y + ball.size > canvas.height) {
+    showAllBricks();
+    score = 0;
+  }
+}
+
+// Increase score
+function increaseScore() {
+  score++;
+
+  if (score % (brickRowCount * brickRowCount) === 0) {
+    showAllBricks();
+  }
+}
+
+// Make all bricks appear
+function showAllBricks() {
+  bricks.forEach(column => {
+    column.forEach(brick => (brick.visible = true));
+  });
+}
+
+// Draw everything
+function draw() {
+  // clear canvas
+  ctx.clearRect(0, 0, canvas.width, canvas.height);
+
+  drawBall();
+  drawPaddle();
+  drawScore();
+  drawBricks();
+}
+
+// Update canvas drawing and animation
+function update() {
+  movePaddle();
+  moveBall();
+
+  // Draw everything
+  draw();
+
+  requestAnimationFrame(update);
+}
+
+update();
+
+// Keydown event
+function keyDown(e) {
+  if (e.key === 'Right' || e.key === 'ArrowRight') {
+    paddle.dx = paddle.speed;
+  } else if (e.key === 'Left' || e.key === 'ArrowLeft') {
+    paddle.dx = -paddle.speed;
+  }
+}
+
+// Keyup event
+function keyUp(e) {
+  if (
+    e.key === 'Right' ||
+    e.key === 'ArrowRight' ||
+    e.key === 'Left' ||
+    e.key === 'ArrowLeft'
+  ) {
+    paddle.dx = 0;
+  }
+}
+
+// Keyboard event handlers
+document.addEventListener('keydown', keyDown);
+document.addEventListener('keyup', keyUp);
+
+// Rules and close event handlers
+rulesBtn.addEventListener('click', () => rules.classList.add('show'));
+closeBtn.addEventListener('click', () => rules.classList.remove('show'));
diff --git a/style.css b/style.css
@@ -0,0 +1,21 @@
+* {
+  box-sizing: border-box;
+}
+
+body {
+  background-color: #0095dd;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  font-family: Arial, Helvetica, sans-serif;
+  min-height: 100vh;
+  margin: 0;
+}
+
+
+canvas {
+  background: #f0f0f0;
+  display: block;
+  border-radius: 5px;
+}