學生預設專案 | JavaScript 程式專案

{"id":49509,"student_id":10,"content":"var car = new Car();\ncar.reset(50, 50, 90);\ncar.speed = 0;\ncar.addSensor(-30);\ncar.addSensor(0);\ncar.addSensor(30);\n\nforever(function(){\n    print(car.sensorsData);\n    if (key.right) car.direction += 3;\n    if (key.left) car.direction -= 3;\n    if (key.up) car.speed += 0.05;\n    if (key.space) car.speed -= 0.05;\n});\n\n\nwhen('keyup', 'r', function () {\n   car.reset(50, 50, 90); \n   car.speed = 0;\n});\n\n// 當所有車子都壞掉時，會觸發這個函式\nfunction nextGeneration () {\n    console.log('產生下一代車子...');\n    car.reset(50, 50, 90);\n}\n\n// 產生 dna1 dna2 的下一代基因\nfunction crossover (a, b) {\n    \n}\n\n// length 要產生的 dna 長度\nfunction randomDNA (length) {\n    \n}\n\n// input*5 hidden*4 output*2\nfunction NN (inputs, weights) {\n    var i = inputs;\n    var w = outputs;\n}","created_at":"2018-11-19T15:58:37.620+08:00","updated_at":"2019-10-19T04:10:56.875+08:00","name":"學生預設專案","language":"javascript","screenshot":{"url":"https://cdn0.koding.school/uploads/project/screenshot/49509/89edcce60b8890776f43b51e69f48ea4.jpg"},"parent_id":49205,"plugin":"function Point (x, y) {\n    this.x = x || 0;\n    this.y = y || 0;\n}\n\nfunction Line (p1, p2, size, color) {\n\n    this.p1 = p1;\n    this.p2 = p2;\n    this.size = size || 1;\n    this.color = color || 'black';\n    this.a = 0;\n    this.b = 0;\n    \n    // y = ax + b\n    // a:斜率 b:常數\n    this.update = function () {\n        // 計算斜率\n        this.a = (this.p1.y - this.p2.y) / (this.p1.x - this.p2.x);\n        \n        // 這招真的很無恥，斜率 1000 畫面上分辨不出是否垂直線\n        // 在計算交會點的時候就很方便，不用再判斷是否為垂直線\n        if (Math.abs(this.a) === Infinity) this.a = 1000;\n        \n        // 計算常數項\n        this.b = this.p1.y - this.p1.x*this.a;\n    }\n    this.update(); // 初始化更新\n    \n    \n    // 取得兩線斷相交的座標，如果沒有相交就回傳 undefined\n    this.touched = function (line) {\n\n        if (!this.isCrossWith(line)) return; // undefined\n        \n        let x = (line.b - this.b)/(this.a - line.a);\n        let y = this.a*x + this.b;\n        return {x: x, y: y};\n    }\n    \n    // 兩線斷是否相交\n    this.isCrossWith = function (line) {\n        return line.calc(this.p1.x, this.p1.y) * line.calc(this.p2.x, this.p2.y) \u003c 0 \u0026\u0026\n               this.calc(line.p1.x, line.p1.y) * this.calc(line.p2.x, line.p2.y) \u003c 0\n    }\n\n    this.calc = function (x, y) {\n        if (Math.abs(this.a) == Infinity) return x - this.b;\n        return this.a*x + this.b - y;\n    }\n\n    this.render = function () {\n        pen.size = this.size;\n        pen.color = this.color;\n        pen.drawLine(this.p1.x, this.p1.y, this.p2.x, this.p2.y);\n    }\n    \n    var self = this;\n    forever(function(){\n        self.update();\n        self.render();\n    });\n}\n\n\nvar walls = []; // 存放賽道線條\nvar cars = []; // 存放所有製造出來的車子\n\n\nfunction Car (x, y) {\n    \n    let width = 20; // 車體中心到四個角的距離\n    let sensorLength = 1000; // 感測器的長度距離\n\n    let center = createSprite('dot.jpg');\n    center.x = x || 320;\n    center.y = y || 240;\n    center.speed = 1; // 預設車速\n    center.status = 'running'; // running, broken\n    \n    // 車體的四個點\n    let p1 = new Point();\n    let p2 = new Point();\n    let p3 = new Point();\n    let p4 = new Point();\n    center.corner = [p1, p2, p3, p4];\n    \n    // 感測器的點\n    // let a = center.a = new Point();\n    // let b = center.b = new Point();\n    // let c = center.c = new Point();\n    // let d = center.d = new Point();\n    // let e = center.e = new Point();\n    // center.censorPoints = [a, b, c, d, e];\n    center.censorPoints = [];\n    \n    // 感測器的線段\n    center.sensors = [\n        // new Line(center, a, 0, '#00000000'),\n        // new Line(center, b, 0, '#00000000'),\n        // new Line(center, c, 0, '#00000000'),\n        // new Line(center, d, 0, '#00000000'),\n        // new Line(center, e, 0, '#00000000'),\n    ]\n    \n    // 感測器讀取的資料\n    center.sensorsData = [];\n    \n    // 車體\n    center.border = [\n        new Line(p1, p2, 2),\n        new Line(p2, p3, 2),\n        new Line(p3, p4, 2),\n        new Line(p4, p1, 2),\n    ];\n    \n    center.addSensor = function (direction) {\n        let point = new Point();\n        let line = new Line(center, point, 0, '#00000000');\n        line.direction = direction;\n        center.censorPoints.push(point);\n        center.sensors.push(line);\n    }\n    \n    center.updateLines = function () {\n        for (var i=0; i\u003c4; i++) {\n            this.border[i].update();\n        }\n        for (var i=0; i\u003cthis.sensors.length; i++) {\n            this.sensors[i].update();\n        }\n    }\n    \n    center.update = function () {\n        var self = this;\n        this.border.forEach((line) =\u003e {\n           if (self.status == 'broken') line.color = 'gray';\n           else line.color = 'black';\n        });\n        \n        // 更新車體的四個點座標\n        var offset = [30, 150, -150, -30];\n        for (var i=0; i\u003c4; i++) {\n            this.direction += offset[i];\n            this.stepForward(width);\n            this.corner[i].x = this.x;\n            this.corner[i].y = this.y;\n            this.stepForward(-width);\n            this.direction -= offset[i];\n        }\n        \n        // 更新感測器的線\n        // var offset = [-45, -22.5, 0, 22.5, 45];\n        // var offset = [-60, 0, 60];\n        for (var i=0; i\u003ccenter.sensors.length; i++) {\n            var offset = center.sensors[i].direction;\n            center.direction += offset;\n            center.stepForward(sensorLength);\n            center.censorPoints[i].x = center.x;\n            center.censorPoints[i].y = center.y;\n            center.stepForward(-sensorLength);\n            center.direction -= offset;\n        }\n        \n        this.updateLines();\n    };\n    \n    center.turn = function (direction) {\n        if (this.status == 'broken') return;\n        this.direction += direction;\n    }\n    \n    center.reset = function (x, y, direction) {\n        this.x = x;\n        this.y = y;\n        this.direction = direction;\n        this.update();\n        this.status = 'running';\n    }\n    \n    forever(function () {\n        if (center.speed \u003c 1) center.speed = 1;\n        if (center.speed \u003e 10) center.speed = 10;\n        if (center.status == 'running') {\n            center.stepForward(center.speed); \n        }\n        center.update();\n    });\n    \n    center.update(); // 初始化更新\n    \n    cars.push(center);\n    return center;\n}\n\nforever(function(){\n    \n    // 檢查車子是否碰到賽道邊界，碰到則將車子狀態改成 broken\n    cars.forEach(function (car) {\n        for (var x=0; x\u003ccar.border.length; x++) {\n            for (var y=0; y\u003cwalls.length; y++) {\n                if (car.border[x].touched(walls[y])) {\n                    car.status = 'broken';\n                    return;\n                }\n            }\n        }\n    });\n    \n    // 更新車子感測器的數值\n    cars.forEach(function (car) {\n        if (car.status == 'broken') return;\n        for (var x=0; x\u003ccar.sensors.length; x++) {\n            \n            var shortest = Infinity;\n            var target = {};\n            \n            for (var y=0; y\u003cwalls.length; y++) {\n                let pos = car.sensors[x].touched(walls[y]);\n                if (pos) {\n                    let length = Math.sqrt((pos.x - car.x)**2 + (pos.y - car.y)**2);\n                    if (length \u003c shortest) {\n                        shortest = Math.round(length);\n                        target = pos;\n                    }\n                }\n                \n            }\n            \n            car.sensorsData[x] = shortest;\n            pen.color = '#aaa';\n            pen.size = 1;\n            pen.drawLine(car.x, car.y, target.x, target.y);\n            pen.fillColor = 'red';\n            pen.drawCircle(target.x, target.y, 3);\n        }\n    });\n})\n\n\nforever(function(){\n    for (var i=0; i\u003ccars.length; i++) {\n        if (cars[i].status == 'running') return;\n    }\n    if (window.nextGeneration) nextGeneration();\n});\n\n\n\nlet map = [[{\"x\":21,\"y\":64},{\"x\":21,\"y\":64},{\"x\":21,\"y\":44},{\"x\":36,\"y\":28},{\"x\":54,\"y\":17},{\"x\":79,\"y\":12},{\"x\":206,\"y\":12},{\"x\":324,\"y\":13},{\"x\":456,\"y\":13},{\"x\":548,\"y\":13},{\"x\":569,\"y\":19},{\"x\":588,\"y\":31},{\"x\":601,\"y\":47},{\"x\":611,\"y\":69},{\"x\":612,\"y\":88},{\"x\":612,\"y\":113},{\"x\":613,\"y\":403},{\"x\":609,\"y\":426},{\"x\":598,\"y\":446},{\"x\":581,\"y\":461},{\"x\":559,\"y\":470},{\"x\":524,\"y\":470},{\"x\":342,\"y\":470},{\"x\":272,\"y\":470},{\"x\":257,\"y\":464},{\"x\":247,\"y\":449},{\"x\":243,\"y\":432},{\"x\":243,\"y\":413},{\"x\":244,\"y\":393},{\"x\":253,\"y\":378},{\"x\":262,\"y\":364},{\"x\":275,\"y\":349},{\"x\":394,\"y\":197},{\"x\":397,\"y\":182},{\"x\":393,\"y\":169},{\"x\":376,\"y\":165},{\"x\":362,\"y\":166},{\"x\":214,\"y\":166},{\"x\":206,\"y\":171},{\"x\":203,\"y\":182},{\"x\":202,\"y\":197},{\"x\":204,\"y\":395},{\"x\":202,\"y\":417},{\"x\":194,\"y\":435},{\"x\":180,\"y\":451},{\"x\":161,\"y\":466},{\"x\":134,\"y\":469},{\"x\":107,\"y\":468},{\"x\":55,\"y\":469},{\"x\":37,\"y\":464},{\"x\":27,\"y\":451},{\"x\":19,\"y\":431},{\"x\":20,\"y\":411},{\"x\":19,\"y\":268},{\"x\":19,\"y\":102},{\"x\":21,\"y\":64}],\n[{\"x\":123,\"y\":84},{\"x\":123,\"y\":84},{\"x\":205,\"y\":83},{\"x\":331,\"y\":84},{\"x\":461,\"y\":85},{\"x\":517,\"y\":85},{\"x\":529,\"y\":92},{\"x\":530,\"y\":103},{\"x\":529,\"y\":374},{\"x\":526,\"y\":388},{\"x\":513,\"y\":394},{\"x\":372,\"y\":394},{\"x\":359,\"y\":385},{\"x\":363,\"y\":370},{\"x\":447,\"y\":253},{\"x\":474,\"y\":217},{\"x\":482,\"y\":197},{\"x\":488,\"y\":178},{\"x\":485,\"y\":151},{\"x\":478,\"y\":128},{\"x\":462,\"y\":106},{\"x\":444,\"y\":95},{\"x\":413,\"y\":95},{\"x\":341,\"y\":94},{\"x\":216,\"y\":95},{\"x\":189,\"y\":95},{\"x\":161,\"y\":100},{\"x\":144,\"y\":113},{\"x\":133,\"y\":125},{\"x\":125,\"y\":140},{\"x\":122,\"y\":157},{\"x\":122,\"y\":176},{\"x\":121,\"y\":188},{\"x\":120,\"y\":381},{\"x\":116,\"y\":394},{\"x\":104,\"y\":395},{\"x\":99,\"y\":386},{\"x\":99,\"y\":371},{\"x\":97,\"y\":122},{\"x\":98,\"y\":101},{\"x\":123,\"y\":84}],\n[{\"x\":110,\"y\":82},{\"x\":110,\"y\":82}]]\n\nmap.forEach(function (points) {\n    for (var i=1; i\u003cpoints.length; i++) {\n        let p1 = new Point(points[i - 1].x, points[i - 1].y);\n        let p2 = new Point(points[i].x, points[i].y);\n        let l =new Line(p1, p2, 3);\n        walls.push(l)\n    }\n});\n\n\n\n","description":null,"note":null,"status":"public","like_student_ids":[],"is_featured":false,"views":301,"hashid":"meysg5ge","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}