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Flappy bird
Developer User18896｜Date and time 24/3/22 11:25:04
Build time 5.665 sec｜Game capacity 1.054KB｜

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<!DOCTYPE html>
<html>
<head>
  <title>Flappy Bird Game</title>
  <style>
    #gameCanvas {
      border: 2px solid black;
      margin: 0 auto;
      display: block;
    }
  </style>
</head>
<body>
  <canvas id="gameCanvas" width="320" height="480"></canvas>
  
  <script>
    const canvas = document.getElementById('gameCanvas');
    const context = canvas.getContext('2d');
    
    let birdX = 50;
    let birdY = 150;
    let gravity = 2;

function drawBird() {
      context.beginPath();
      context.arc(birdX, birdY, 10, 0, Math.PI * 2);
      context.fillStyle = 'yellow';
      context.fill();
      context.closePath();
    }

function clearCanvas() {
      context.clearRect(0, 0, canvas.width, canvas.height);
    }

function updateGame() {
      birdY += gravity;
      clearCanvas();
      drawBird();
      requestAnimationFrame(updateGame);
    }

document.addEventListener('keydown', function(event) {
      if (event.keyCode === 32) {
        birdY -= 40;
      }
    });

updateGame();
  </script>
</body>
</html>