貪食蛇簡易版 | JavaScript 程式專案

{"id":6666,"student_id":1407,"content":"// 將背景設定為黑色\nsetBackdrop(\"white\");\n// 用 \"head.gif\" 創造一個角色\nvar bodies = [];\nvar head = createSprite( \"head.gif\" );\nvar score = 0;\nvar clock = 0;\nvar food = createSprite( \"food.gif\" );\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(food) ){\n            score = 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        if( head.touched(bodies)  || head.x\u003c0 ||head.x\u003e640 ||head.y\u003c0 || head.y\u003e480){\n            print(\"Game over!\",160,200,\"black\",60);\n            stop();\n        }\n    }\n    clock = clock + 1;\n    print(score,20,20,\"black\");\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\", \"left\", function(){\n\thead.direction = 270;\n});\nwhen(\"keydown\", \"down\", function(){\n\thead.direction = 180;\n});","created_at":"2017-05-14T23:09:29.975+08:00","updated_at":"2019-10-22T08:02:13.632+08:00","name":"貪食蛇 簡易版","language":"javascript","screenshot":{"url":"https://cdn4.koding.school/uploads/project/screenshot/6666/316df386a491f0f99a814b3ec0c0a95e.jpg"},"parent_id":4697,"plugin":"","description":null,"note":null,"status":"public","like_student_ids":[1407],"is_featured":false,"views":427,"hashid":"jzmsvkd","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}