用h5写一个俄罗斯方块
时间: 2023-12-31 21:04:43 浏览: 80
俄罗斯方块h5源码下载
好的,以下是一个简单的HTML5俄罗斯方块游戏的代码示例:
```html
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>俄罗斯方块</title>
<style>
canvas {
border: 1px solid #000;
}
</style>
</head>
<body>
<canvas id="canvas" width="300" height="600"></canvas>
<script>
// 获取画布和绘图上下文
var canvas = document.getElementById('canvas');
var ctx = canvas.getContext('2d');
// 定义方块大小和数量
var blockSize = 30;
var blockCountX = canvas.width / blockSize;
var blockCountY = canvas.height / blockSize;
// 定义方块数组并初始化为空
var blocks = [];
for (var i = 0; i < blockCountY; i++) {
blocks[i] = [];
for (var j = 0; j < blockCountX; j++) {
blocks[i][j] = 0;
}
}
// 定义当前方块的位置和形状
var curX = 0;
var curY = 0;
var curShape = [
[1, 1],
[1, 1]
];
// 绘制方块
function drawBlock(x, y, color) {
ctx.fillStyle = color;
ctx.fillRect(x * blockSize, y * blockSize, blockSize, blockSize);
ctx.strokeRect(x * blockSize, y * blockSize, blockSize, blockSize);
}
// 绘制所有方块
function drawBlocks() {
for (var i = 0; i < blockCountY; i++) {
for (var j = 0; j < blockCountX; j++) {
if (blocks[i][j] != 0) {
drawBlock(j, i, 'blue');
}
}
}
}
// 绘制当前方块
function drawCurBlock() {
for (var i = 0; i < curShape.length; i++) {
for (var j = 0; j < curShape[i].length; j++) {
if (curShape[i][j] != 0) {
drawBlock(curX + j, curY + i, 'red');
}
}
}
}
// 清空画布
function clearCanvas() {
ctx.clearRect(0, 0, canvas.width, canvas.height);
}
// 更新方块数组
function updateBlocks() {
for (var i = 0; i < curShape.length; i++) {
for (var j = 0; j < curShape[i].length; j++) {
if (curShape[i][j] != 0) {
blocks[curY + i][curX + j] = 1;
}
}
}
}
// 检查方块是否与其他方块重叠
function checkOverlap() {
for (var i = 0; i < curShape.length; i++) {
for (var j = 0; j < curShape[i].length; j++) {
if (curShape[i][j] != 0 && blocks[curY + i][curX + j] != 0) {
return true;
}
}
}
return false;
}
// 检查方块是否到达底部
function checkBottom() {
for (var i = 0; i < curShape.length; i++) {
for (var j = 0; j < curShape[i].length; j++) {
if (curShape[i][j] != 0 && (curY + i == blockCountY - 1 || blocks[curY + i + 1][curX + j] != 0)) {
return true;
}
}
}
return false;
}
// 消除满行
function clearFullLines() {
for (var i = blockCountY - 1; i >= 0; i--) {
var isFull = true;
for (var j = 0; j < blockCountX; j++) {
if (blocks[i][j] == 0) {
isFull = false;
break;
}
}
if (isFull) {
blocks.splice(i, 1);
blocks.unshift(new Array(blockCountX).fill(0));
}
}
}
// 开始游戏
function startGame() {
curX = Math.floor(blockCountX / 2) - 1;
curY = 0;
curShape = [
[1, 1],
[1, 1]
];
if (checkOverlap()) {
alert('游戏结束!');
return;
}
clearCanvas();
drawBlocks();
drawCurBlock();
setTimeout(function() {
if (checkBottom()) {
updateBlocks();
clearFullLines();
startGame();
} else {
curY++;
clearCanvas();
drawBlocks();
drawCurBlock();
startGame();
}
}, 500);
}
startGame();
</script>
</body>
</html>
```
此代码实现了一个简单的俄罗斯方块游戏,使用 HTML5 的 canvas 元素进行绘图。其中,方块大小、数量和形状都可以自由定义。游戏中包含了方块的绘制、移动、更新、消除等基本功能。该代码仅供参考,具体实现可能会有所不同。
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