貪食蛇_S 副本 | JavaScript 程式專案

{"id":103803,"student_id":3525,"content":"// 將背景設定為黑色\r\nsetBackdrop(\"#000000\");\r\n// 用 \"head.gif\" 創造一個角色\r\nvar head = createSprite( \"head.gif\" );\r\nvar clock = 0;\r\nvar bodies = [];\r\nvar food = createSprite(\"food.gif\");\r\n    food.x = Math.random() * 640;\r\n    food.y = Math.random() * 480;\r\nvar score = 0;\r\nvar alive = true;\r\nvar speed = 6;\r\n\r\nforever(function(){\r\n    // 在這裡的程式碼會不斷執行\r\n    clock += 1;\r\n    if (clock % speed === 0 \u0026\u0026 alive === true) {\r\n        playerControl();\r\n        eat();\r\n        move();\r\n        die();\r\n    }\r\n    \r\n    print(score,20,20,\"white\");\r\n    \r\n    if (alive === false) {\r\n        print(\"Game Over!\", 160, 200, \"white\", 60);\r\n    }\r\n});\r\n\r\n// 當按下鍵盤的「右方向鍵」時\r\n\r\nfunction move(){\r\n    if (bodies.length \u003e 0) {\r\n        var lastBody = bodies.pop();\r\n        lastBody.x = head.x;\r\n        lastBody.y = head.y;\r\n        bodies.unshift(lastBody);\r\n    }\r\n    head.stepForward(16);\r\n}\r\n\r\nfunction playerControl(){\r\n    if (key.up \u0026\u0026 head.direction != 180) {\r\n        head.direction = 0;\r\n    }\r\n    if (key.down \u0026\u0026 head.direction !== 0) {\r\n        head.direction = 180;\r\n    }\r\n    if (key.left \u0026\u0026 head.direction != 90) {\r\n        head.direction = 270;\r\n    }\r\n    if (key.right \u0026\u0026 head.direction != 270) {\r\n        head.direction = 90;\r\n    }\r\n}\r\n\r\nfunction eat() {\r\n    if (head.touched(food)) {\r\n        food.x = Math.random() * 640;\r\n        food.y = Math.random() * 480;\r\n        score += 1;\r\n        \r\n        var body = createSprite(\"body.gif\");\r\n        bodies.push(body);\r\n        \r\n        if (score == 5) {\r\n            speed = 5;\r\n        }\r\n        if (score == 10) {\r\n            speed = 4;\r\n        }\r\n        if (score == 15) {\r\n            speed = 3;\r\n        }\r\n        \r\n    }\r\n}\r\n\r\nfunction die() {\r\n    if (head.touched(bodies) || head.x \u003c 0 || head.x \u003e 640 || head.y \u003c0 || head.y \u003e 480) {\r\n        alive = false;\r\n    }\r\n}","created_at":"2019-11-02T10:07:30.782+08:00","updated_at":"2019-11-02T14:48:23.574+08:00","name":"貪食蛇_S 副本","language":"javascript","screenshot":{"url":"https://cdn6.koding.school/uploads/project/screenshot/103803/6882966347b365880b9e9eede3ddf70f.jpg"},"parent_id":54317,"plugin":"","description":null,"note":null,"status":"public","like_student_ids":[],"is_featured":false,"views":101,"hashid":"npms9wkd","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}