貪食蛇_S 副本 | JavaScript 程式專案

{"id":188275,"student_id":3770,"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\");\nhead.x = 320;\nhead.y = 240;\n\nvar food = createSprite(\"food.gif\")\nfood.x = Math.random()*640;\nfood.y = Math.random()*480;\nvar clock = 0;\nvar score = 0;\nvar alive = true;\nvar bodies = [];\n\nfunction eat () {\n    if (head.touched(food)) {\n\n        food.x = Math.random()*640;\n        food.y = Math.random()*480;\n        score = score + 1;\n\n        var body = createSprite(\"body.gif\")\n        bodies.push(body);\n    }\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\n\n    clock = clock + 1;\n    if (clock % 6 == 0 \u0026\u0026 alive == true) {\n        eat();\n        playercontrol();\n        move();\n        die();\n    }\n\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    head.stepForward(16);\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.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}\n\nfunction die() {\n    if (head.touched(bodies) || head.x \u003c 0 || head.x \u003e 640 || head.y \u003e 480 || head.y \u003c 0) {\n        alive = false;\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":"2020-09-05T10:04:38.655+08:00","updated_at":"2020-09-05T12:17:32.341+08:00","name":"貪食蛇_S 副本","language":"javascript","screenshot":{"url":"https://cdn6.koding.school/uploads/project/screenshot/188275/1bac1c78ea246296835f70e694286694.jpg"},"parent_id":54317,"plugin":"","description":null,"note":null,"status":"public","like_student_ids":[],"is_featured":false,"views":63,"hashid":"qmdszgne","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}