let c = document.getElementById(“game”); let ctx = c.getContext(“2d”); // player let x = 130; // falling block let bx = Math.random() * 280; let by = 0; document.addEventListener(“keydown”, e => { if (e.key === “ArrowLeft”) x -= 20; if (e.key === “ArrowRight”) x += 20; }); function draw() { ctx.clearRect(0, 0, 300, 300); // player (white bar) ctx.fillStyle = “white”; ctx.fillRect(x, 270, 40, 10); // falling block ctx.fillRect(bx, by, 20, 20); by += 3; // reset if it falls if (by > 300) { by = 0; bx = Math.random() * 280; } requestAnimationFrame(draw); } draw();