貪食蛇_S 副本 | JavaScript 程式專案

{"id":119182,"student_id":3469,"content":"// 將背景設定為黑色\nsetBackdrop(\"#000000\");\n// 用 \"head.gif\" 創造一個角色\nvar head = createSprite(\"head.gif\");\nvar food = createSprite('food.gif');\nfood.x = Math.random() * 640;\nfood.y = Math.random() * 480;\nvar speed = 10;\nvar alive = true;\nvar clock = 0;\nvar score = 0;\nvar bodies = [];\n\n\nforever(function() {\n    // 在這裡的程式碼會不斷執行\n    print(bodies.length, 10, 10, 'white');\n    clock += 1;\n    if (clock % speed === 0 \u0026\u0026 alive) {\n        playerControl();\n        eat();\n        move();\n        die();\n    }\n    if (alive === false) {\n        print('Game over!', 160, 200, 'white', 60);\n    }\n});\n\nfunction move() {\n    if (bodies.length \u003e 0) {\n        var lastbody = bodies.pop();\n        lastbody.x = head.x;\n        lastbody.y = head.y;\n        bodies.unshift(lastbody);\n    }\n    head.stepForward(16);\n}\nfunction playerControl() {\n    if (key.up \u0026\u0026 head.direction != 180) {\n        head.direction = 0;\n    }\n    if (key.right \u0026\u0026 head.direction != 270) {\n        head.direction = 90;\n    }\n    if (key.down \u0026\u0026 head.direction !== 0) {\n        head.direction = 180;\n    }\n    if (key.left \u0026\u0026 head.direction != 90) {\n        head.direction = 270;\n    }\n}\nfunction eat() {\n    if (head.touched(food)) {\n        food.x = Math.random() * 640;\n        food.y = Math.random() * 480;\n        score += 1;\n\n        var body = createSprite('body.gif');\n        bodies.push(body);\n        if (score % 3 === 0 \u0026\u0026 speed \u003e 2) {\n            speed -= 1;\n        }\n    }\n}\nfunction die(){\n    if (head.touched(bodies) || head.x \u003c 0 || head.x \u003e 640 || head.y \u003c 0 || head.y \u003e480) {\n        alive = false;\n    }\n}\n\n\n\n\n\n\n\n// 當按下鍵盤的「右方向鍵」時\nwhen(\"keydown\", \"right\", function() {\n    head.direction = 90;\n});","created_at":"2020-01-05T13:39:35.439+08:00","updated_at":"2020-03-28T00:37:34.578+08:00","name":"貪食蛇_S 副本","language":"javascript","screenshot":{"url":"https://cdn7.koding.school/uploads/project/screenshot/119182/a5d18e5a72b75c27dd137524d4665f09.jpg"},"parent_id":54317,"plugin":"","description":null,"note":null,"status":"public","like_student_ids":[],"is_featured":false,"views":114,"hashid":"wdksnyp9","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}