貪食蛇學生版 | JavaScript 程式專案

{"id":5972,"student_id":13,"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\" );\nvar bodies = [];\nvar score = 0;\nvar clock = 0;\n\nforever(function(){\n    // 在這裡的程式碼會不斷執行\n    if(clock % 8 == 0) {\n        var lastBody = bodies.pop();\n        if(lastBody){\n            lastBody.x = head.x;\n            lastBody.y = head.y;\n            bodies.unshift(lastBody);\n        }\n        head.stepForward(16);\n        if(head.touched(bodies) || head.x \u003e 640 || head.x \u003c 0 || head.y \u003e 480 || head.y \u003c 0) {\n            print(\"GAME OVER\", 120, 200, \"white\", 64);\n            stop();\n        }\n        if(head.touched(food)) {\n            score = score + 1;\n            food.x = Math.random() * 640;\n            food.y = Math.random() * 240;\n            var body = createSprite(\"body.gif\");\n            body.x = head.x;\n            body.y = head.y;\n            bodies.push(body);\n        }\n    }\n    clock = clock + 1;\n    print(score, 20, 20, \"#ffffff\");\n});\n\n// 當按下鍵盤的「右方向鍵」時\nwhen(\"keydown\", \"right\", function(){\n\thead.direction = 90;\n});\nwhen(\"keydown\", \"up\", function(){\n\thead.direction = 0;\n});\nwhen(\"keydown\", \"down\", function(){\n\thead.direction = 180;\n});\nwhen(\"keydown\", \"left\", function(){\n\thead.direction = -90;\n});","created_at":"2017-05-14T23:09:29.975+08:00","updated_at":"2019-11-10T16:58:09.757+08:00","name":"貪食蛇 學生版","language":"javascript","screenshot":{"url":"https://cdn8.koding.school/uploads/project/screenshot/5972/b6047fc7d9c7e4fd385d0de584b44537.jpg"},"parent_id":4697,"plugin":"","description":null,"note":null,"status":"public","like_student_ids":[],"is_featured":false,"views":144,"hashid":"npmsg9k","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}