Minesweeper/Javascript at master · KMUlee/Minesweeper · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        * { padding: 0; margin: 0;}
        canvas { background: #eee; display: block; margin: 0 auto; }
    </style>
</head>

<body>
<canvas id="canv" width="480" height="320"></canvas>
<script>
    var canvas = document.getElementById("canv");
    var ctx = canvas.getContext("2d");
    //공
    var ballRadius = 10;
    var x = canvas.width/2;
    var y = canvas.height-30;
    var dx = 2;
    var dy = -2;
    //패들
    var paddleHeight = 10;
    var paddleWidth = 75;
    var paddleX = (canvas.width-paddleWidth)/2;
    //AI
    var AipH = 10;
    var AipW = 75;
    var AipX = (canvas.width-AipW)/2;
    //키보드
    var rightPressed = false;
    var leftPressed = false;

    document.addEventListener("keydown", keyDownHandler, false);
    document.addEventListener("keyup", keyUpHandler, false);

    function keyDownHandler(e) {
        if(e.keyCode == 39) {
            rightPressed = true;
        }
        else if(e.keyCode == 37) {
            leftPressed = true;
        }
    }
    function keyUpHandler(e) {
        if(e.keyCode == 39) {
            rightPressed = false;
        }
        else if(e.keyCode == 37) {
            leftPressed = false;
        }
    }

    function drawAip() {
        ctx.beginPath();
        ctx.rect(AipX, 0, AipW, AipH);
        ctx.fillStyle = "red";
        ctx.fill();
        ctx.closePath();
    }

    function drawBall() {
        ctx.beginPath();
        ctx.arc(x, y, ballRadius, 0, Math.PI*2);
        ctx.fillStyle = "#0095DD";
        ctx.fill();
        ctx.closePath();
    }
    function drawPaddle() {
        ctx.beginPath();
        ctx.rect(paddleX, canvas.height-paddleHeight, paddleWidth, paddleHeight);
        ctx.fillStyle = "#0095DD";
        ctx.fill();
        ctx.closePath();
    }

    function draw() {
        ctx.clearRect(0, 0, canvas.width, canvas.height);
        drawBall();
        drawPaddle();
        drawAip();

        if(x + dx > canvas.width-ballRadius || x + dx < ballRadius) {
            dx = -dx;
        }
        if(y + dy < ballRadius) {
            if (x > AipX && x < AipX + AipW){
                dy = -dy;
            }
            else {
                alert("GAME OVER");
                x = canvas.width/2;
                y = canvas.height-30;
                document.location.reload();
            }
        }
        else if(y + dy > canvas.height-ballRadius) {
            if(x > paddleX && x < paddleX + paddleWidth) {
                dy = -dy;
                if (rightPressed){
                    dx = dx+1;
                }
                else if (leftPressed){
                    dx = dx-1;
                }
            }
            else {
                alert("GAME OVER");
                x = canvas.width/2;
                y = canvas.height-30;
                document.location.reload();
            }
        }

        if(rightPressed && paddleX < canvas.width-paddleWidth) {
            paddleX += 7;
        }
        else if(leftPressed && paddleX > 0) {
            paddleX -= 7;
        }

        x += dx;
        y += dy;
        AipX += dx*0.85;
        if (AipX > canvas.width-AipW ){
            AipX = canvas.width-AipW;
        }
        else if (AipX < 0){
            AipX = 0;
        }

        requestAnimationFrame(draw);
    }

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