基于JS实现简单滑块拼图游戏
本文讲解"基于JS实现简单滑块拼图游戏",用于解决相关问题。
成品效果
<body><div id="game" ></div></body> /*** js配置*/ var config = {width: 300,height: 300,img: "./img/fj.jpg",gameDom: document.getElementById("game"),row: 3, //3行col: 3 //3列 } //经过计算的一些数据 var computed = {num: config.col * config.row, //方块数量w: config.width / config.col, //每个小方块的宽度h: config.height / config.row //每个小方块的高度 } //方块对象的数组,每个对象中记录了方块的正确坐标、当前坐标、dom元素、以及一些实用方法 var blocks; /*** 为全局变量blocks赋值*/ function setBlocks() {blocks = [];var points = getPointsArray(); //该数组用于设置每个方块的正确坐标var shuffledPoints = [...points]; //复制后的数组用于在洗牌后设置方块的当前坐标shuffle(shuffledPoints);//洗牌for (var i = 0; i < points.length; i++) { const point = points[i]; //创建方块对象 var b = { left: point.left, top: point.top, curLeft: shuffledPoints[i].left, curTop: shuffledPoints[i].top, dom: document.createElement("div"), update() { this.dom.style.transition = "all .5s"; this.dom.style.left = this.curLeft + "px"; this.dom.style.top = this.curTop + "px"; }, isCorrect() { return this.curTop === this.top && this.curLeft === this.left; }, isEmpty: i === points.length - 1 //是否应该是空白方块 } b.dom.style.width = computed.w + "px"; b.dom.style.height = computed.h + "px"; b.dom.style.position = "absolute"; b.dom.style.border = "1px solid #fff"; b.dom.style.boxSizing = "border-box"; b.dom.style.background = `url("${config.img}")`; b.dom.style.cursor = "pointer"; b.dom.style.backgroundPosition = `-${b.left}px -${b.top}px`; b.dom.block = b; b.dom.onclick = function () { switchBlock(this.block); } b.update(); blocks.push(b);} } /*** 生成游戏*/ function generateGame() {config.gameDom.style.width = config.width + "px";config.gameDom.style.height = config.height + "px";config.gameDom.style.border = "2px solid #8c8c8c";config.gameDom.innerHTML = ""; //清空区域for (const item of blocks) { if (!item.isEmpty) { config.gameDom.appendChild(item.dom); }} } /*** 获得所有方块的可取到的坐标数组*/ function getPointsArray() {var arr = [];for (var i = 0; i < computed.num; i++) { arr.push({ left: (i % config.col) * computed.w, top: parseInt(i / config.col) * computed.h });}return arr; } /*** 将某个block对象的坐标,与空坐标交换* @param {*} block */ function switchBlock(block) {//找到空坐标var emptyBlock = blocks.find(b=>b.isEmpty);//判断是否相邻if(Math.abs(block.curLeft - emptyBlock.curLeft) + Math.abs(block.curTop - emptyBlock.curTop) !== computed.w){ return;}//交换var bLeft = block.curLeft;var bTop = block.curTop;block.curLeft = emptyBlock.curLeft;block.curTop = emptyBlock.curTop;emptyBlock.curLeft = bLeft;emptyBlock.curTop = bTop;block.update();emptyBlock.update();if(isWin()){ setTimeout(() => { alert("游戏胜利") }, 500);} } /*** 数组洗牌* @param {*} arr */ function shuffle(arr) {for (var i = 0; i < arr.length - 1; i++) { var targetIndex = getRandom(0, arr.length - 1); var temp = arr[i]; arr[i] = arr[targetIndex]; arr[targetIndex] = temp;} } function getRandom(min, max) {var dec = max - min;return Math.floor(Math.random() * dec + min); } /*** 游戏是否胜利*/ function isWin() {for (const b of blocks) { if (!b.isCorrect()) { return false; }}return true; } setBlocks(); generateGame();
总结
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