HTML5小游戏源码是指使用HTML5技术开发的小型游戏源代码。这类游戏通常具有简单的玩法和较低的开发难度，适合初学者学习和实践。HTML5小游戏源码可以包括游戏逻辑、图形界面、音效等元素，开发者可以通过修改源码来创建自己的小游戏。
<!DOCTYPE html><html lang="zh"><head> <meta charset="UTF8"> <title>打砖块游戏</title> <style> canvas { border: 1px solid black; } </style></head><body> <canvas id="gameCanvas" width="480" height="320"></canvas> <ｓｃｒｉｐｔ> var canvas = document.getElementById("gameCanvas"); var ctx = canvas.getContext("2d"); var ballRadius = 10; var x = canvas.width / 2; var y = canvas.height 30; var dx = 2; var dy = 2; var paddleHeight = 10; var paddleWidth = 75; var paddleX = (canvas.width paddleWidth) / 2; var rightPressed = false; var leftPressed = false; var brickRowCount = 3; var brickColumnCount = 5; var brickWidth = 75; var brickHeight = 20; var brickPadding = 10; var brickOffsetTop = 30; var brickOffsetLeft = 30; var bricks = []; for (var c = 0; c < brickColumnCount; c++) { bricks[c] = []; for (var r = 0; r < brickRowCount; r++) { bricks[c][r] = { x: 0, y: 0, status: 1 }; } } document.addEventListener("keydown", keyDownHandler, false); document.addEventListener("keyup", keyUpHandler, false); document.addEventListener("mousemove", mouseMoveHandler, false); function keyDownHandler(e) { if (e.key == "Right" || e.key == "ArrowRight") { rightPressed = true; } else if (e.key == "Left" || e.key == "ArrowLeft") { leftPressed = true; } } function keyUpHandler(e) { if (e.key == "Right" || e.key == "ArrowRight") { rightPressed = false; } else if (e.key == "Left" || e.key == "ArrowLeft") { leftPressed = false; } } function mouseMoveHandler(e) { var 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 drawBricks() { for (var c = 0; c < brickColumnCount; c++) { for (var r = 0; r < brickRowCount; r++) { if (bricks[c][r].status == 1) { var brickX = (c * (brickWidth + brickPadding)) + brickOffsetLeft; var brickY = (r * (brickHeight + brickPadding)) + brickOffsetTop; bricks[c][r].x = brickX; bricks[c][r].y = brickY; ctx.beginPath(); ctx.rect(brickX, brickY, brickWidth, brickHeight); ctx.fillStyle = "#0095DD"; ctx.fill(); ctx.closePath(); } } } } function collisionDetection() { for (var c = 0; c < brickColumnCount; c++) { for (var r = 0; r < brickRowCount; r++) { var b = bricks[c][r]; if (b.status == 1) { if (x > b.x && x < b.x + brickWidth && y > b.y && y < b.y + brickHeight) { dy = dy; b.status = 0; } } } } } function draw() { ctx.clearRect(0, 0, canvas.width, canvas.height); drawBricks(); drawBall(); drawPaddle(); 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 { alert("游戏结束"); document.location.reload(); clearInterval(interval); // Needed for Chrome to end game } } if (rightPressed && paddleX < canvas.width paddleWidth) { paddleX += 7; } else if (leftPressed && paddleX > 0) { paddleX = 7; } x += dx; y += dy; } var interval = setInterval(draw, 10); </ｓｃｒｉｐｔ></body></html>将以上代码复制到一个名为index.html的文件中，然后用浏览器打开该文件即可运行游戏。
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