var canvas = document.getElementById('canvas'), c = canvas.getContext('2d'), birdie = document.getElementById('birdie'), socket = io(); var JUMP_SPEED = 7 var bird = { x: 0, y: 0, } WALL_WIDTH = 30 GATE_HEIGHT = 60 var wall = { x: 0, gate: { y: 0, height: GATE_HEIGHT }, width: WALL_WIDTH, } var game = { width: 250, height: 200, lost: false, score: 0, } socket.on('game', function() { }); (function loop() { requestAnimationFrame(function() { loop(); }); }) function draw() { ctx.clearRect(0, 0, canvas.width, canvas.height); ctx.draw }