貪食蛇_S 副本 | JavaScript 程式專案

{"id":97364,"student_id":3232,"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;\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;\nforever(function() {\n    print(\"score:\" + score, 20, 10, \"white\", 20)\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});\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.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 += 1;\n        if (score%3 == 0 \u0026\u0026 score != 0) {\n            speed -= 1;\n        }\n        var body = createSprite(\"body.gif\");\n        bodies.push(body);\n    }\n}\nfunction die() {\n    if (head.touched(bodies) || head.x \u003c 0 || head.x \u003e 640 || head.y \u003c 0 || head.y \u003e 480) {\n        alive = false;\n    }\n}\n// 當按下鍵盤的「右方向鍵」時\n//when(\"keydown\", \"right\", function() {\n//head.direction = 90;\n//});","created_at":"2019-09-28T10:03:07.851+08:00","updated_at":"2019-10-19T09:57:53.294+08:00","name":"貪食蛇_S 副本","language":"javascript","screenshot":{"url":"https://cdn8.koding.school/uploads/project/screenshot/97364/3ef3711603d459e7ca4a62e980cb82a0.jpg"},"parent_id":54317,"plugin":"","description":null,"note":null,"status":"public","like_student_ids":[],"is_featured":false,"views":45,"hashid":"jzms448w","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}