OthelloAI 副本 | Programming Project | OrangeApple Learning Platform

{"id":294661,"student_id":10,"content":"{\"html\":\"\u003c!DOCTYPE html\u003e\\n\u003chtml lang=\\\"en\\\"\u003e\\n\u003chead\u003e\\n    \u003cmeta charset=\\\"UTF-8\\\"\u003e\\n    \u003cmeta name=\\\"viewport\\\" content=\\\"width=device-width, initial-scale=1.0\\\"\u003e\\n    \u003cmeta http-equiv=\\\"X-UA-Compatible\\\" content=\\\"ie=edge\\\"\u003e\\n    \u003ctitle\u003eDocument\u003c/title\u003e\\n    \u003cscript src=\\\"https://cdn.jsdelivr.net/npm/vue/dist/vue.js\\\"\u003e\u003c/script\u003e\\n    \u003clink rel=\\\"stylesheet\\\" href=\\\"index.css\\\"\u003e\\n\u003c/head\u003e\\n\u003cbody\u003e\\n    \u003cdiv id=\\\"game\\\"\u003e\\n        \u003cdiv class=\\\"grid\\\"\u003e\\n            \u003cdiv v-for=\\\"(_, y) in 8\\\" class=\\\"row\\\"\u003e\\n                \u003cdiv v-for=\\\"(_, x) in 8\\\" class=\\\"col\\\" :class=\\\"getClassOf(x, y)\\\" @click=\\\"place(x, y)\\\"\u003e\\n                \u003c/div\u003e\\n            \u003c/div\u003e\\n        \u003c/div\u003e\\n        \u003cp\u003e{{gameInfo}}\u003c/p\u003e\\n    \u003c/div\u003e\\n    \u003cscript src=\\\"othello.js\\\"\u003e\u003c/script\u003e\\n    \u003cscript src=\\\"ai.js\\\"\u003e\u003c/script\u003e\\n    \u003cscript\u003e\\n        \\n    \u003c/script\u003e\\n\u003c/body\u003e\\n\u003c/html\u003e\",\"css\":\"body {\\n    text-align: center;\\n    background-color: #ffc859;\\n    font-family: monospace;\\n    padding: 30px;\\n}\\n.grid {\\n    display: inline-block;\\n    border: 1px solid black;\\n}\\n.row {\\n    display: flex;\\n}\\n.col {\\n    position: relative;\\n    width: 50px;\\n    height: 50px;\\n    text-align: center;\\n    line-height: 50px;\\n    box-sizing: border-box;\\n    border: 1px solid black;\\n}\\n.col.black::after,\\n.col.white::after,\\n.col.hint::after {\\n    content: '';\\n    position: absolute;\\n    top: 50%;\\n    left: 50%;\\n    width: 35px;\\n    height: 35px;\\n    border: 1px solid black;\\n    border-radius: 50%;\\n    transform: translate(-50%, -50%);\\n    transition: background-color 1s step-end;\\n}\\n.col.black::after {\\n    background-color: black;\\n}\\n.col.white::after {\\n    background-color: white;\\n}\\n.col.hint::after {\\n    border-style: dashed;\\n}\",\"js\":\"class Othello {\\n\\n    constructor() {\\n        this.width = 8\\n        this.height = 8\\n        this.grid = {}\\n        this.turn = 'b'\\n        this.logs = []\\n        this.steps = 0\\n        this.offsets = [{\\n            x: 1, y: 0\\n        }, {\\n            x: -1, y: 0\\n        }, {\\n            x: 0, y: 1\\n        }, {\\n            x: 0, y: -1\\n        }, {\\n            x: 1, y: 1\\n        }, {\\n            x: -1, y: -1\\n        }, {\\n            x: 1, y: -1\\n        }, {\\n            x: -1, y: 1\\n        }]\\n\\n        this.initGrid()\\n    }\\n\\n    initGrid() {\\n        for (let y = -2; y \u003c 10; y++) {\\n            this.grid[y] = {}\\n            for (let x = -2; x \u003c 10; x++) {\\n                this.grid[y][x] = ''\\n            }\\n        }\\n        this.grid[3][3] = 'b'\\n        this.grid[4][4] = 'b'\\n        this.grid[4][3] = 'w'\\n        this.grid[3][4] = 'w'\\n    }\\n\\n    getValidPos() {\\n        const arr = []\\n        for (let x = 0; x \u003c 8; x++) {\\n            for (let y = 0; y \u003c 8; y++) {\\n                if (this.place(x, y)) {\\n                    arr.push({\\n                        x, y\\n                    })\\n                    this.undo()\\n                }\\n            }\\n        }\\n        return arr\\n    }\\n\\n    place(x, y) {\\n        if (this.grid[y][x] !== '') return false\\n\\n        let isValid = false\\n        this.offsets.forEach(o =\u003e {\\n            if (this.grid[y + o.y][x + o.x] === this.turn) return\\n            if (this.fillLine(x, y, o.x, o.y)) isValid = true\\n        })\\n\\n        if (isValid) {\\n            this.logs.unshift({\\n                x, y, status: this.grid[y][x], steps: this.steps\\n            })\\n            this.grid[y][x] = this.turn\\n            this.switch()\\n            this.steps++\\n        }\\n\\n        return isValid\\n    }\\n\\n    fillLine(x, y, vx, vy) {\\n\\n        while (true) {\\n            x += vx\\n            y += vy\\n            const target = this.grid[y][x]\\n            if (target === '') return false\\n            if (target === this.turn) break\\n        }\\n\\n        while (true) {\\n            x -= vx\\n            y -= vy\\n            const target = this.grid[y][x]\\n            if (target === '') return true\\n            if (target === this.turn) return true\\n            if (target !== this.turn) {\\n                this.logs.unshift({\\n                    x, y, status: this.grid[y][x], steps: this.steps\\n                })\\n                this.grid[y][x] = this.turn\\n            }\\n        }\\n    }\\n\\n    switch () {\\n        this.turn = this.turn === 'b' ? 'w': 'b'\\n    }\\n\\n    undo() {\\n        if (this.steps \u003e 0) {\\n            this.steps--\\n            while (this.logs[0] \u0026\u0026 this.logs[0].steps === this.steps) {\\n                const diff = this.logs.shift()\\n                this.grid[diff.y][diff.x] = diff.status\\n            }\\n            this.switch()\\n        }\\n    }\\n\\n    clone() {\\n        const virtual = new Othello()\\n        virtual.grid = JSON.parse(JSON.stringify(this.grid))\\n        virtual.logs = JSON.parse(JSON.stringify(this.logs))\\n        virtual.turn = this.turn\\n        virtual.steps = this.steps\\n        return virtual\\n    }\\n}\\n\\nfunction AI(game) {\\n    const startTime = Date.now()\\n    const result = alphabeta(game.clone(), 4)\\n    console.log(`cost: ${Date.now() - startTime}ms`)\\n    return result\\n}\\n\\nfunction alphabeta(game, deep, alpha = -Infinity, beta = Infinity) {\\n\\n    let best = {\\n        x: undefined,\\n        y: undefined,\\n        score: game.turn === 'w' ? Infinity: -Infinity\\n    }\\n\\n    for (let x = 0; x \u003c 8; x++) {\\n        for (let y = 0; y \u003c 8; y++) {\\n            if (game.place(x, y)) {\\n\\n                let result = deep \u003e 0 ? alphabeta(game, deep - 1, alpha, beta): (\\n                    {\\n                        x, y, score: evaluation(game.grid)\\n                    }\\n                )\\n\\n                if (game.turn === 'w' \u0026\u0026 result.score \u003e best.score) {\\n                    alpha = best.score = result.score\\n                    best.x = x\\n                    best.y = y\\n                }\\n\\n                if (game.turn === 'b' \u0026\u0026 result.score \u003c best.score) {\\n                    beta = best.score = result.score\\n                    best.x = x\\n                    best.y = y\\n                }\\n\\n                game.undo()\\n\\n                if (alpha \u003e beta) return best\\n            }\\n        }\\n    }\\n\\n    return best\\n}\\n\\nfunction evaluation(grid) {\\n    let score = 0\\n    for (let x = 0; x \u003c 8; x++) {\\n        for (let y = 0; y \u003c 8; y++) {\\n            let i = 1\\n            if (x === 0 || x === 7) i *= 10\\n            if (y === 0 || y === 7) i *= 10\\n            if (grid[y][x] === 'b') score += i\\n            if (grid[y][x] === 'w') score -= i\\n        }\\n    }\\n    return score\\n}\\n\\nconst game = new Othello()\\n\\nnew Vue({\\n    el: '#game',\\n    data: {\\n        game,\\n        validPos: game.getValidPos(),\\n    },\\n    methods: {\\n        getClassOf(x, y) {\\n            const s = this.game.grid[y][x]\\n            if (this.validPos.some(pos =\u003e pos.x === x \u0026\u0026 pos.y === y)) return ['hint']\\n            if (s === 'b') return ['black']\\n            if (s === 'w') return ['white']\\n        },\\n        place(x, y) {\\n            if (this.game.place(x, y)) {\\n                this.validPos = this.game.getValidPos()\\n                if (this.validPos.length === 0) {\\n                    this.game.switch()\\n                } else {\\n                    this.runAI()\\n                }\\n            }\\n        },\\n        runAI() {\\n            setTimeout(() =\u003e {\\n                this.validPos = this.game.getValidPos()\\n                if (this.validPos.length === 0) return\\n\\n                const result = AI(this.game)\\n                game.place(result.x, result.y)\\n\\n                this.validPos = this.game.getValidPos()\\n                if (this.validPos.length === 0) {\\n                    this.game.switch()\\n                    this.runAI()\\n                }\\n            }, 3000)\\n        }\\n    },\\n    computed: {\\n        gameInfo() {\\n            let w = 0\\n            let b = 0\\n            for (let y = 0; y \u003c 8; y++) {\\n                for (let x = 0; x \u003c 8; x++) {\\n                    if (this.game.grid[y][x] === 'w') w++\\n                    if (this.game.grid[y][x] === 'b') b++\\n                }\\n            }\\n            return `${b} : ${w}`\\n        }\\n    }\\n})\"}","created_at":"2021-09-03T18:08:21.324+08:00","updated_at":"2021-09-03T18:18:47.389+08:00","name":"OthelloAI 副本","language":"web","screenshot":{"url":null},"parent_id":294656,"plugin":"","description":null,"note":null,"status":"public","like_student_ids":[],"is_featured":false,"views":330,"hashid":"wdks4grwg","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}