pacman | JavaScript Programming Project | OrangeApple Learning Platform

{"id":48667,"student_id":10,"content":"var player = Player('yellow.png', 1, 1, 'down', 'player');\n\nforever(function(){\n    if (key.up) player.next = 'up';\n    if (key.down) player.next = 'down';\n    if (key.right) player.next = 'right';\n    if (key.left) player.next = 'left';\n});\n\n// var blinky = Player('red.png', 26, 1, 'down');\n// var pinky = Player('pink.png', 10, 1, 'down');\n// var inky = Player('blue.png', 10, 1, 'down');\n\n// blinky.ai = function () {\n//     blinky.next = searchPath(blinky.target, player.target);\n// }\n\n\n\n// pinky.ai = function () {\n//     let nextTarget = player.target[player.next];\n//     for (let i=0; i\u003c4; i++) {\n//         if (nextTarget[player.next]) {\n//             nextTarget = nextTarget[player.next];\n//         }\n//     }\n//     pinky.next = searchPath(blinky.target, nextTarget);\n// }\n\n// inky.ai = function () {\n//     let tx = player.x - blinky.x + player.x;\n//     let ty = player.y - blinky.y + player.y;\n//     let best;\n//     let bestDistance = 10000000;\n//     for (var x=0; x\u003c28; x++) {\n//         for (var y=0; y\u003c31; y++) {\n//             if (grid[x][y].role === 'food') {\n//                 d = grid[x][y].distanceTo(player);\n//                 if (d \u003c bestDistance) {\n//                     best = grid[x][y];\n//                     bestDistance = d;\n//                 }\n//             }\n//         }   \n//     }\n//     inky.next = searchPath(inky.target, best);\n// }\n\n\n// function searchPath (from, to) {\n//     var tmp = from.direction;\n//     from.toward(to);\n//     var d = from.direction;\n//     from.direction = tmp;\n    \n//     if (d \u003e= 45 \u0026\u0026 d \u003c 135) return 'right';\n//     if (d \u003e= 135 \u0026\u0026 d \u003c 225) return 'down';\n//     if (d \u003e= 225 \u0026\u0026 d \u003c 315) return 'left';\n//     return 'up';\n     \n// }\n\n// function closest (arr, target) {\n    \n//     var best;\n//     var bestDiff;\n    \n//     for (var i=0; i\u003carr.length; i++) {\n//         var a = target;\n//         var b = arr[i];\n        \n//         var diff = Math.floor(a - b);\n//         if (diff \u003e 180) diff = 360 - diff;\n        \n//         if (best == undefined || diff \u003c bestDiff) {\n//             best = arr[i];\n//             bestDiff = diff;\n//         }\n//     }\n//     return best;\n// }\n\n// function bestPath (from, to) {\n//     let arr = [from];\n//     let history = [from];\n    \n//     let count=0;\n//     while (arr.length \u003e 0) {\n//         count++;\n//         let b = arr.shift();\n        \n//         if (b === to) break;\n        \n//         if (b.up \u0026\u0026 history.indexOf(b.up) === -1) {\n//             arr.push(b.up);\n//             b.up.from = b;\n//             history.push(b.up);\n//         }\n//         if (b.right \u0026\u0026 history.indexOf(b.right) === -1) {\n//             arr.push(b.right);\n//             b.right.from = b;\n//             history.push(b.right);\n//         }\n//         if (b.left \u0026\u0026 history.indexOf(b.left) === -1) {\n//             arr.push(b.left);\n//             b.left.from = b;\n//             history.push(b.left);\n//         }\n//         if (b.down \u0026\u0026 history.indexOf(b.down) === -1) {\n//             arr.push(b.down);\n//             b.down.from = b;\n//             history.push(b.down);\n//         }\n//     }\n//     console.log(count);\n    \n//     var end = to;\n//     var last;\n//     while(end.from) {\n//         last = end;\n//         end = end.from;\n//     }\n//     if (last.x \u003e end.x) return 'right';\n//     if (last.x \u003c end.x) return 'left';\n//     if (last.y \u003e end.y) return 'down';\n//     if (last.y \u003c end.y) return 'up';\n// }\n","created_at":"2018-11-12T14:59:03.598+08:00","updated_at":"2019-11-07T16:52:30.980+08:00","name":"pacman","language":"javascript","screenshot":{"url":"/uploads/project/screenshot/48667/76f38e21c50acbcda559768dfdbf1d39.jpg"},"parent_id":2,"plugin":"setBackdrop(\"black\");\n\nlet map = [\n    'xxxxxxxxxxxxxxxxxxxxxxxxxxxx',\n    'x............xx............x',\n    'x.xxxx.xxxxx.xx.xxxxx.xxxx.x',\n    'x.xxxx.xxxxx.xx.xxxxx.xxxx.x',\n    'x.xxxx.xxxxx.xx.xxxxx.xxxx.x',\n    'x..........................x',\n    'x.xxxx.xx.xxxxxxxx.xx.xxxx.x',\n    'x.xxxx.xx.xxxxxxxx.xx.xxxx.x',\n    'x......xx....xx....xx......x',\n    'xxxxxx.xxxxx.xx.xxxxx.xxxxxx',\n    'xxxxxx.xxxxx.xx.xxxxx.xxxxxx',\n    'xxxxxx.xx          xx.xxxxxx',\n    'xxxxxx.xx xxx  xxx xx.xxxxxx',\n    'xxxxxx.xx x      x xx.xxxxxx',\n    '          x      x          ',\n    'xxxxxx.xx x      x xx.xxxxxx',\n    'xxxxxx.xx xxxxxxxx xx.xxxxxx',\n    'xxxxxx.xx          xx.xxxxxx',\n    'xxxxxx.xx xxxxxxxx xx.xxxxxx',\n    'xxxxxx.xx xxxxxxxx xx.xxxxxx',\n    'x............xx............x',\n    'x.xxxx.xxxxx.xx.xxxxx.xxxx.x',\n    'x.xxxx.xxxxx.xx.xxxxx.xxxx.x',\n    'x...xx.......xx.......xx...x',\n    'xxx.xx.xx.xxxxxxxx.xx.xx.xxx',\n    'xxx.xx.xx.xxxxxxxx.xx.xx.xxx',\n    'x......xx....xx....xx......x',\n    'x.xxxxxxxxxx.xx.xxxxxxxxxx.x',\n    'x.xxxxxxxxxx.xx.xxxxxxxxxx.x',\n    'x..........................x',\n    'xxxxxxxxxxxxxxxxxxxxxxxxxxxx',\n]\n\n\nvar grid = {}\nfor (let y=-1; y \u003c 31 + 1; y++) {\n    grid[y] = {}\n}\n\nfor (var y=0; y \u003c 31; y++) {\n    for (var x=0; x \u003c 28; x++) {\n        var s;\n        if (map[y][x] === 'x') {\n            s = createSprite('block.png');\n            s.role = 'block';\n        }\n        if (map[y][x] === '.') {\n            s = createSprite('yellow.png');\n            s.role = 'food';\n            s.scale = 0.1;\n        }\n        if (map[y][x] === ' ') {\n            s = createSprite('yellow.png');\n            s.role = 'food';\n            s.hidden = true;\n        }\n        s.X = x;\n        s.Y = y;\n        s.x = x*15 + 130;\n        s.y = y*15 + 15;\n        grid[x][y] = s;\n    }\n}\n\n// connect\nfor (let x = 0; x \u003c 28; x++) {\n    for (let y = 0; y \u003c 31; y++) {\n        \n        if (grid[x][y].role === 'block') continue;\n        \n        let count = 0;\n        if (grid[x][y + 1] \u0026\u0026 grid[x][y + 1].role !== 'block') {\n            grid[x][y].down = grid[x][y + 1];\n            count++;\n        }\n        if (grid[x][y - 1] \u0026\u0026 grid[x][y - 1].role !== 'block') {\n            grid[x][y].up = grid[x][y - 1];\n            count++;\n        }\n        if (grid[x + 1][y] \u0026\u0026 grid[x + 1][y].role !== 'block') { \n            grid[x][y].right = grid[x + 1][y];\n            count++;\n        }\n        if (grid[x - 1][y] \u0026\u0026 grid[x - 1][y].role !== 'block') {\n            grid[x][y].left = grid[x - 1][y];\n            count++;\n        }\n        grid[x][y].count = count; // 岔路個數\n    }\n}\n\n\nfunction Player (img, x, y, direction, role) {\n    let player = createSprite(img);\n    player.scale = 0.4;\n    player.target = grid[x][y];\n    player.moveTo(grid[x][y]);\n    player.currentDirection = direction;\n    player.next = undefined;\n    player.role = role; // ghost, player\n    \n    player.forever(function(){\n        \n        if (player.distanceTo(player.target) \u003e 1) {\n            player.toward(player.target);\n            player.stepForward(1);\n        } else {\n            player.moveTo(player.target);\n            \n            if (player.target.X === 0 \u0026\u0026 player.target.Y === 14) {\n                player.moveTo(grid[27][14]);\n                player.target = grid[27][14];\n            }\n            else if (player.target.X === 27 \u0026\u0026 player.target.Y === 14) {\n                player.moveTo(grid[0][14]);\n                player.target = grid[0][14];\n            }\n            \n            if (player.role == 'player' \u0026\u0026 player.target.role === 'food') {\n                if (!player.target.hidden) {\n                    player.target.hidden = true;\n                }\n            }\n            \n            // 遇到岔路時進行決策\n            if (player.target.count \u003e= 3 \u0026\u0026 player.ai) player.ai();\n            \n            // 如果可以轉彎\n            if (player.next \u0026\u0026 player.target[player.next]) {\n                player.target = player.target[player.next];\n                player.currentDirection = player.next;\n                player.next = undefined;\n            }\n            // 如果不能轉彎就繼續往前移動\n            else if (player.target[player.currentDirection]) {\n                player.target = player.target[player.currentDirection];\n            }\n            else {\n                // 遇到轉角就自動轉彎\n                if (player.target.count === 2) {\n                    if (player.currentDirection != 'right' \u0026\u0026 player.target.left) {\n                        player.target = player.target.left;\n                        player.currentDirection = 'left';\n                    }\n                    if (player.currentDirection != 'left' \u0026\u0026 player.target.right) {\n                        player.target = player.target.right;\n                        player.currentDirection = 'right';\n                    }\n                    if (player.currentDirection != 'down' \u0026\u0026 player.target.up) {\n                        player.target = player.target.up;\n                        player.currentDirection = 'up';\n                    }\n                    if (player.currentDirection != 'up' \u0026\u0026 player.target.down) {\n                        player.target = player.target.down;\n                        player.currentDirection = 'down';\n                    }\n                }\n            }\n        }\n    });\n    \n    return player;\n}\n\n\n","description":null,"note":null,"status":"public","like_student_ids":[],"is_featured":false,"views":504,"hashid":"wdkspp9g","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}