基于Vue uniapp怎么实现贪吃蛇游戏

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游戏演示

代码结构

详细代码结构如果需要请到GitHub查看

<template><view ref="body" class="content"><view>蛇蛇目前：{{snakes.length}}米长</view><view class="game-field">                <!-- 地面板块 -->  <view class="block"  v-for="(x, i) in blocks" :key="i"></view></view>                    <view v-show="!started || ended" class="game-board-wrap">                        <view v-show="!started" class="game-board">                            <view class="title">选择游戏难度</view>                            <radio-group name="radio" @change="bindLevelChange">                                <label class="label">                                    <radio value="1" :checked="level==1" /><text>简单模式</text>                                </label>                                <label class="label">                                    <radio value="2" :checked="level==2" /><text>正常模式</text>                                </label>                                <label class="label">                                    <radio value="3" :checked="level==3" /><text>困难模式</text>                                </label>                                <label class="label">                                    <radio value="4" :checked="level==4" /><text>地狱模式</text>                                </label>                            </radio-group>                            <button type="primary" @click="start">开始游戏</button>                        </view><view v-show="ended" class="settle-board">                            <view class="title">游戏结束</view>                            <view class="result">您的蛇蛇达到了{{snakes.length}}米</view>                            <view class="btns">                                <button type="primary" @click="reStart">再次挑战</button>                                <button type="primary" plain @click="rePick">重选难度</button>                            </view></view></view></view></template><script>export default {    data() {            return {                blocks: [], // 板块                wORMs: [], // 虫子                snakes: [0, 1, 2, 3], // 蛇身                direction: "right", // 蛇移动方向            };    },    onLoad() {        this.initGame();    },    methods: {        initGame() {            this.blocks = new Array(100).fill(0); // 生成100个地面板块            this.worms = [Math.floor(Math.random() * 96) + 4]; // 随机生成虫子            this.snakes = [0, 1, 2, 3]; // 初始化蛇身位置        }    }}</script>

渲染蛇身

蛇身的渲染根据snakes来匹配地面板块的索引 修改对应的背景图来渲染蛇身

<template>    <view class="game-field">        <view class="block" : v-for="(x, i) in blocks" :key="i">        </view>    </view></template><script>import worm from "worm.png";import snakeBody from "snake_body.png";import snakeHead from "snake_head.png";import snakeTail from "snake_tail.png";import polluteBlock from "pollute.png";import wormBoom from "worm_4.png";export default {    methods: {        bg(type, index) {            let bg = "";            switch (type) {                case 0: // 地板                    bg = "unset";                    break;                case 1: // 虫子                    if (this.boom) {                            bg = `url(${wormBoom})`;                    } else {                            bg = `url(${worm})`;                    }                    break;                case 2: // 蛇                    let head = this.snakes[this.snakes.length - 1];                    let tail = this.snakes[0];                    if (index === head) {                            bg = `url(${snakeHead})`;                    } else if (index === tail) {                            bg = `url(${snakeTail})`;                    } else {                            bg = `url(${snakeBody})`;                    }                    break;                case 3: // 污染的地块                    bg = `url(${polluteBlock})`;                    break;            }            return bg；        },    }}</scipt>

控制蛇的方向

通过监听键盘按键事件和手势来控制蛇的方向

<template><view ref="body" class="content" @keyup.left="bindLeft" @keyup.right="bindRight" @keyup.down="bindDown"@keyup.up="bindUp" @touchstart="handleTouchStart" @touchmove="handleTouchMove">    <view>蛇蛇目前：{{snakes.length}}米长</view>    <view class="game-field">        <view class="block" :(x, i) in blocks" :key="i"></view>    </view></view></template><script>    export default {        data(){            return {                direction: "right",                started: false, // 游戏开始了                ended: false, // 游戏结束了                level: 1, // 游戏难度                lastX: 0,                lastY: 0,            }        },        onLoad() {            this.initGame();        },        methods:{            initGame() {                this.blocks = new Array(100).fill(0); // 生成100个地面板块                this.worms = [Math.floor(Math.random() * 96) + 4]; // 随机生成虫子                this.snakes = [0, 1, 2, 3]; // 初始化蛇身位置                document.onkeydown = (e) => {                    switch (e.keyCode) { // 获取当前按下键盘键的编码                        case 37: // 按下左箭头键                            this.bindLeft();                            break;                        case 39: // 按下右箭头键                            this.bindRight();                            break;                        case 38: // 按下上箭头键                            if (!this.started) {                                    this.level--;                            } else {                                    this.bindUp();                            }                            break;                        case 40: // 按下下箭头键                            if (!this.started) {                                    this.level++;                            } else {                                    this.bindDown();                            }                            break;                    }                }            },            handleTouchStart(e) {                // 手指开始位置                this.lastX = e.touches[0].pageX;                this.lastY = e.touches[0].pageY;            },            handleTouchMove(e) {                let lastX = e.touches[0].pageX; // 移动的x轴坐标                let lastY = e.touches[0].pageY; // 移动的y轴坐标                let touchX = lastX - this.lastX;                let touchY = lastY - this.lastY                if (Math.abs(touchX) > Math.abs(touchY)) {                if (touchX < 0) {                    if(this.direction === "right") return;                    this.direction = 'left'                    } else if (touchX > 0) {                        if(this.direction === "left") return;                        this.direction = 'right'                    }                } else {                    if (touchY < 0) {                        if(this.direction === "down") return;                        this.direction = 'up'                    } else if (touchY > 0) {                        if(this.direction === "up") return;                        this.direction = 'down'                    }                }                this.lastX = lastX;                this.lastY = lastY;            },            bindUp() {                if (this.direction === "down") return;                this.direction = "up";            },            bindDown() {                if (this.direction === "up") return;                this.direction = "down";            },            bindLeft() {                if (this.direction === "right") return;                this.direction = "left";            },            bindRight() {                if (this.direction === "left") return;                this.direction = "right";            },        }    }</script>

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