BestFS 搜尋 | JavaScript Programming Project | OrangeApple Learning Platform

{"id":28905,"student_id":10,"content":"var world = new World(.3); // 初始化地圖\nvar hero = world.setHero(1, 1); // 設定角色位置\nvar end = world.setEnd(30, 21); // 設定寶箱位置\n\nvar explorer = [hero];\n\nforever(function () {\n\n    if (explorer.length \u003e 0) {\n        \n        explorer.sort(function (a, b) {\n          return a.distanceTo(end) - b.distanceTo(end); \n        });\n        \n        var e = explorer.shift();\n        e.color = 'orange';\n        \n        if (e.right \u0026\u0026 e.right.color == undefined) {\n            e.right.color = 'blue';\n            e.right.from = e;\n            explorer.push(e.right);\n        }\n        if (e.top \u0026\u0026 e.top.color == undefined) {\n            e.top.color = 'blue';\n            e.top.from = e;\n            explorer.push(e.top);\n        }\n        if (e.left \u0026\u0026 e.left.color == undefined) {\n            e.left.color = 'blue';\n            e.left.from = e;\n            explorer.push(e.left);\n        }\n        if (e.bottom \u0026\u0026 e.bottom.color == undefined) {\n            e.bottom.color = 'blue';\n            e.bottom.from = e;\n            explorer.push(e.bottom);\n        }\n        \n        if (e == end) {\n            explorer.length = 0;\n        }\n    } else {\n        end.color = 'red';\n        var b = end.from;\n        while(b) {\n            b.color = 'red';\n            b = b.from;\n        }\n    }\n});","created_at":"2018-05-15T22:29:47.239+08:00","updated_at":"2024-01-16T13:11:55.883+08:00","name":"BestFS 搜尋","language":"javascript","screenshot":{"url":"/uploads/project/screenshot/28905/0eac7cb298b6e5a13858213164a012a2.jpg"},"parent_id":2,"plugin":"setBackdrop('#333333');\n\nvar World = function (rate) {\n    \n    var W = 20;\n    var rows = 640/W;\n    var cols = 480/W;\n    var grid = [];\n    \n    for (var x = -1; x \u003c= rows; x++) {\n        grid[x] = [];\n        for (var y = -1; y \u003c= cols; y++) {\n            var s = createSprite([\"grass.png\", \"wall.png\"]);\n                s.scale = 0.333;\n                s.x = x*W + W/2;\n                s.y = y*W + W/2;\n                s.step = Infinity;\n                s.connects = [];\n            \n            if (x == -1 || y == -1 || x == rows || y == rows) {\n                s.costumeId = 1;\n            } else {\n                s.costumeId = Math.random() \u003c rate ? 1 : 0;\n            }\n            grid[x][y] = s;\n        }\n    }\n    \n    connects();\n    \n    forever(function(){\n        for (var x = 0; x \u003c rows; x++) {\n            for (var y = 0; y \u003c cols; y++) {\n                if (grid[x][y].color != undefined) {\n                    grid[x][y].opacity = 0.6;\n                    pen.size = 0;\n                    pen.fillColor = grid[x][y].color;\n                    pen.drawRect(x*W, y*W, W, W);\n                } else {\n                    grid[x][y].opacity = 1;\n                }\n            }\n        }\n    });\n    \n    function connects () {\n        for (var x = 0; x \u003c rows; x++) {\n            for (var y = 0; y \u003ccols; y++) {\n                grid[x][y].left = undefined;\n                grid[x][y].right = undefined;\n                grid[x][y].bottom = undefined;\n                grid[x][y].top = undefined;\n                if (grid[x - 1][y].costumeId == 0)\n                    grid[x][y].left = grid[x - 1][y];\n                if (grid[x][y - 1].costumeId == 0)\n                    grid[x][y].top = grid[x][y - 1];\n                if (grid[x + 1][y].costumeId == 0)\n                    grid[x][y].right = grid[x + 1][y];\n                if (grid[x][y + 1].costumeId == 0)\n                    grid[x][y].bottom = grid[x][y + 1];\n            }\n        }\n    }\n    \n    function setHero (x, y) {\n        if (x \u003c 0 || y \u003c 0 || x \u003e= rows || y \u003e= cols) return;\n        var hero = createSprite('hero.png');\n        hero.scale = 0.7;\n        hero.x = x*W + W/2;\n        hero.y = y*W + W/2 - 15;\n        clearRect(x, y);\n        return grid[x][y];\n    }\n    \n    function setEnd (x, y) {\n        if (x \u003c 0 || y \u003c 0 || x \u003e= rows || y \u003e= cols) return;\n        var end = createSprite('box.png');\n        end.scale = 0.7;\n        end.x = x*W + W/2;\n        end.y = y*W + W/2;\n        clearRect(x, y);\n        return grid[x][y];\n    }\n\n    function clearRect (x, y) {\n        clear(x, y-2);\n        clear(x-1, y-1);\n        clear(x-0, y-1);\n        clear(x+1, y-1);\n        clear(x-2, y);\n        clear(x-1, y);\n        clear(x, y);\n        clear(x+1, y);\n        clear(x+2, y);\n        clear(x-1, y+1);\n        clear(x-0, y+1);\n        clear(x+1, y+1);\n        clear(x, y+2);\n        connects();\n    }\n    \n    function clear (x, y) {\n        if (x \u003e= 0 \u0026\u0026 x \u003c rows \u0026\u0026 y \u003e= 0 \u0026\u0026 y \u003c cols) {\n            grid[x][y].costumeId = 0;\n        }\n    }\n\n    return {\n        grid: grid,\n        setHero: setHero,\n        setEnd: setEnd\n    }\n};\n\n\n\n\n\n\n\n","description":null,"note":null,"status":"public","like_student_ids":[],"is_featured":false,"views":529,"hashid":"meys96zy","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}