貪食蛇_S 副本 | JavaScript 程式專案

{"id":186516,"student_id":3769,"content":"// 將背景設定為黑色\nsetBackdrop(\"#e8e8e8\");\n// 用 \"head.gif\" 創造一個角色\nvar head = createSprite(\"head.gif\");\nhead.x = 320;\nhead.y = 240;\nvar food = createSprite(\"food.gif\");\nfood.x = Math.random()*640;\nfood.y = Math.random()*480;\nvar clock = 0;\nvar score = 0;\nvar bodies = [];\nvar alive = true;\nvar speed = 6;\n\nforever(function() {\n    print(bodies.length)\n    clock = clock + 1;\n    if(head.x \u003c 0){\n        head.x = 640\n    }\n    if(head.x \u003e 640){\n        head.x = 0\n    }\n    if(head.y \u003c 0){\n        head.y = 480\n    }\n    if(head.y \u003e 480){\n        head.y = 0\n    }\n    if (clock % speed == 0 \u0026\u0026 alive == true) {\n        playerControl()\n        eat();\n        move();\n        \n        die();\n    }\n    if (alive == false){\n        print(\"gameover\", 160, 200, 'black', 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\n    }\n    head.stepForward(16);\n}\n\nfunction eat() {\n    if (head.touched(food)) {\n        food.x = Math.random()*640;\n        food.y = Math.random()*480;\n        score = score + 1;\n        var body = createSprite(\"body.gif\");\n        bodies.push(body);\n        \n    }\n}\n\nfunction die(){\n    if(head.touched(bodies)){\n        alive = false;\n    }\n}\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.left \u0026\u0026 head.direction != 90) {\n        head.direction = 270;\n    }\n    if (key.down \u0026\u0026 head.direction != 0) {\n        head.direction = 180;\n    }\n\n}\n\n","created_at":"2020-08-29T10:17:01.066+08:00","updated_at":"2020-08-29T11:46:55.801+08:00","name":"貪食蛇_S 副本","language":"javascript","screenshot":{"url":"https://cdn1.koding.school/uploads/project/screenshot/186516/fe3984dc28be38ef975657104b67a06a.jpg"},"parent_id":54317,"plugin":"","description":null,"note":null,"status":"public","like_student_ids":[],"is_featured":false,"views":50,"hashid":"4y3sjz48","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}