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No:45689

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Flappy bird
Developer User19659｜Date and time 24/2/21 4:41:39
Build time 13.977 sec｜Game capacity 2.647KB｜

Script

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[PR]現在の欲しいゲームランキング

Click here for free DL of the app version that can save data.

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Flappy Bird Game</title>
<style>
    canvas {
        border: 1px solid black;
    }
</style>
</head>
<body>
<canvas id="gameCanvas" width="400" height="600"></canvas>

let birdX = 50;
    let birdY = 200;
    let birdDY = 0;
    let gravity = 0.5;
    let gap = 100;
    let obstacleWidth = 50;
    let obstacles = [];

function drawBird() {
        ctx.fillStyle = "yellow";
        ctx.fillRect(birdX, birdY, 50, 50);
    }

function drawObstacle() {
        ctx.fillStyle = "green";
        for (let i = 0; i < obstacles.length; i++) {
            ctx.fillRect(obstacles[i].x, 0, obstacleWidth, obstacles[i].topHeight);
            ctx.fillRect(obstacles[i].x, obstacles[i].topHeight + gap, obstacleWidth, canvas.height - obstacles[i].topHeight - gap);
        }
    }

function moveBird() {
        birdY += birdDY;
        birdDY += gravity;
    }

function generateObstacle() {
        let topHeight = Math.floor(Math.random() * (canvas.height - gap));
        obstacles.push({x: canvas.width, topHeight: topHeight});
    }

function gameLoop() {
        ctx.clearRect(0, 0, canvas.width, canvas.height);

moveBird();
        drawBird();

if (frames % 100 === 0) {
            generateObstacle();
        }

moveObstacles();
        drawObstacle();

if (checkCollision()) {
            gameOver();
        }

frames++;
        requestAnimationFrame(gameLoop);
    }

let frames = 0;
    gameLoop();

function flap() {
        birdDY = -8;
    }

function gameOver() {
        alert("Game Over! Your score is: " + frames);
        window.location.reload();
    }

window.addEventListener("keydown", function (event) {
        if (event.key === " ") {
            flap();
        }
    });
</script>
</body>
</html>