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Script

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<!DOCTYPE html>
<html>
<head>
<title>Runner Game</title>
<style>
body { margin:0; overflow:hidden; background:#222; }
canvas { background:#444; display:block; margin:auto; }
</style>
</head>
<body>

<canvas id="game" width="800" height="400"></canvas>

<script>
let canvas = document.getElementById("game");
let ctx = canvas.getContext("2d");

let player = {
    x:100,
    y:300,
    width:40,
    height:40,
    color:"red"
};

let obstacle = {
    x:800,
    y:300,
    width:40,
    height:40,
    color:"black"
};

let speed = 5;

function drawRect(obj){
    ctx.fillStyle = obj.color;
    ctx.fillRect(obj.x, obj.y, obj.width, obj.height);
}

function update(){
    ctx.clearRect(0,0,800,400);

    obstacle.x -= speed;

    if(obstacle.x < -40){
        obstacle.x = 800;
    }

    if(player.x < obstacle.x + obstacle.width &&
       player.x + player.width > obstacle.x &&
       player.y < obstacle.y + obstacle.height &&
       player.y + player.height > obstacle.y){
        alert("Game Over!");
        obstacle.x = 800;
    }

    drawRect(player);
    drawRect(obstacle);

    requestAnimationFrame(update);
}

document.addEventListener("keydown", function(e){
    if(e.key === "ArrowUp"){
        player.y = 250;
        setTimeout(()=>{ player.y = 300; }, 300);
    }
});

update();
</script>

</body>
</html>

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2KB

Transfer Size

2KB

Content Size

98.0ms

Dom Content Loaded

112.0ms

First Paint

98.0ms

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