貪食蛇_S 副本 | JavaScript 程式專案

{"id":93117,"student_id":3325,"content":"// 將背景設定為黑色\nsetBackdrop(\"#174ecf\");\n// 用 \"head.gif\" 創造一個角色\nvar head = createSprite(\"head.gif\");\nvar clock = 0;\nvar score = 0;\nvar bodies = [];\nvar food = createSprite(\"food.gif\");\nvar alive = true;\n//var speed = 6;\nforever(function() {\n    clock = clock+1;\n    if (clock%6 === 0 \u0026\u0026 alive === true) {\n        playercontrol();\n        eat();\n        move();\n        die();\n    }\n    print(score, 20, 20, \"white\");\n    when(\"keydown\", \"right\", function() {\n        head.direction = 90;\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    // playercontrol();\n    head.stepForward(16);\n}\nfunction playercontrol() {\n    if (key.up \u0026\u0026 head.direction != 180) {\n        head.direction = 0;\n    }\n    if (key.down \u0026\u0026 head.direction !== 0) {\n        head.direction = 180;\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}\nfunction eat() {\n    if (head.touched(food)) {\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}\nfunction die() {\n    \n    if (  head.x \u003c 0 ) {\n        head.x=640\n        head.direction=270\n    }   \n    if (  head.x \u003e 640 ) {\n        head.x=0\n        head.direction=90\n    }   \n       \n    if (  head.y \u003c 0 ) {\n        head.y=480\n        head.direction=0\n    }   \n    if (  head.y \u003e 480 ) {\n        head.y=0\n        head.direction=180\n    }   \n}","created_at":"2019-08-31T16:05:12.043+08:00","updated_at":"2020-08-22T16:13:30.007+08:00","name":"貪食蛇_S 副本","language":"javascript","screenshot":{"url":"https://cdn3.koding.school/uploads/project/screenshot/93117/c8aac92f22fc31750f716efe91503041.jpg"},"parent_id":54317,"plugin":"","description":null,"note":null,"status":"public","like_student_ids":[],"is_featured":false,"views":145,"hashid":"d5ms8vnn","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}