貪食蛇學生版 | JavaScript 程式專案

{"id":18156,"student_id":2591,"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 \u003c 0 || head.x \u003e 640 || head.y \u003c 0 || head.y \u003e 48)){\n            print(\"Game Over\", 160, 200, \"white\", 64);\n            stop();\n        }\n        if(head.touched(food)){\n            score += 1;\n            food.x = Math.random()*640;\n            food.y = Math.random()*480;\n            var body = createSprite(\"body.gif\");\n            body.x = head.x;\n            body.y = head.y;\n            bodies.push(body);\n        }\n    }\n    clock += 1;\n    print(score,20,30,\"white\");\n});\n\n// 當按下鍵盤的「右方向鍵」時\nwhen(\"keydown\", \"right\", function(){\n\thead.direction = 90;\n});\n\nwhen(\"keydown\", \"up\", function(){\n\thead.direction = 0;\n});\n\nwhen(\"keydown\", \"down\", function(){\n\thead.direction = 180;\n});\n\nwhen(\"keydown\", \"left\", function(){\n\thead.direction = 270;\n});","created_at":"2017-05-14T23:09:29.975+08:00","updated_at":"2019-10-06T03:11:28.183+08:00","name":"貪食蛇 學生版","language":"javascript","screenshot":{"url":"https://cdn1.koding.school/uploads/project/screenshot/18156/f39150e1710a764b3296c7e977a69553.jpg"},"parent_id":4697,"plugin":"","description":null,"note":null,"status":"public","like_student_ids":[],"is_featured":false,"views":123,"hashid":"5j3s9gjp","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}