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No:22670

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Block Breaker
Developer User10166｜Date and time 23/10/23 23:49:33
Build time 94.187 sec｜Game capacity 6.002KB｜

Script

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

<!DOCTYPE html>
<html>
<head>
    <title>Block Breaker</title>
    <style>
        canvas {
            border: 1px solid black;
            background-color: #eee;
            display: block;
            margin: 0 auto;
        }
    </style>
</head>
<body>
    <canvas id="myCanvas" width="480" height="320"></canvas>
    <script>
        const canvas = document.getElementById("myCanvas");
        const ctx = canvas.getContext("2d");
        let x = canvas.width / 2;
        let y = canvas.height - 30;
        let dx = 2;
        let dy = -2;
        const ballRadius = 10;
        const paddleHeight = 10;
        const paddleWidth = 75;
        let paddleX = (canvas.width - paddleWidth) / 2;
        let rightPressed = false;
        let leftPressed = false;
        const brickRowCount = 5;
        const brickColumnCount = 3;
        const brickWidth = 75;
        const brickHeight = 20;
        const brickPadding = 10;
        const brickOffsetTop = 30;
        const brickOffsetLeft = 30;
        let score = 0;
        let lives = 3;

document.addEventListener("keydown", keyDownHandler, false);
        document.addEventListener("keyup", keyUpHandler, false);
        document.addEventListener("mousemove", mouseMoveHandler, 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 mouseMoveHandler(e) {
            const relativeX = e.clientX - canvas.offsetLeft;
            if(relativeX > 0 && relativeX < canvas.width) {
                paddleX = relativeX - paddleWidth/2;
            }
        }

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 drawScore() {
            ctx.font = "16px Arial";
            ctx.fillStyle = "#0095DD";
            ctx.fillText("Pontuação: " + score, 8, 20);
        }

function drawLives() {
            ctx.font = "16px Arial";
            ctx.fillStyle = "#0095DD";
            ctx.fillText("Vidas: " + lives, canvas.width-65, 20);
        }

function draw() {
            ctx.clearRect(0, 0, canvas.width, canvas.height);
            drawBricks();
            drawBall();
            drawPaddle();
            drawScore();
            drawLives();
            collisionDetection();

if(x + dx > canvas.width-ballRadius || x + dx < ballRadius) {
                dx = -dx;
            }
            if(y + dy < ballRadius) {
                dy = -dy;
            }
            else if(y + dy > canvas.height-ballRadius) {
                if(x > paddleX && x < paddleX + paddleWidth) {
                    dy = -dy;
                }
                else {
                    lives--;
                    if(!lives) {
                        alert("Game Over!");
                        document.location.reload();
                    }
                    else {
                        x = canvas.width/2;
                        y = canvas.height-30;
                        dx = 2;
                        dy = -2;
                        paddleX = (canvas.width-paddleWidth)/2;
                    }
                }
            }

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

x += dx;
            y += dy;
            requestAnimationFrame(draw);
        }

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