火箭降落 | JavaScript 程式專案

{"id":14115,"student_id":104,"content":"setBackdrop('bg.jpg'); //設定背景\nvar platform = createSprite(\"platform.png\"); //建立角色\nvar rocket = createSprite([\"rocket.png\",\"bomb.png\"]); //建立角色 - 陣列\nvar vy = 0; //重力加速度\nvar vx = 0;\nvar fuel = 500;\n// 1.角色位置初始化\nrocket.x = 50;\nrocket.y = 50;\nrocket.direction = 0;\n\nforever(function() { \n    vy += 0.05; //重力加速度\n    rocket.y += vy;\n    rocket.x += vx;\n    // 使用鍵盤上鑑，火箭往上移動\n    if(fuel \u003e 0){\n        if(key.up){\n            vy -= 0.1;\n            fuel -= 1;\n        }\n        if(key.right){\n            vx += 0.1;\n            fuel -= 1;\n        }\n         if(key.left){\n            vx -= 0.1;\n            fuel -= 1;\n        }\n    }\n    //火箭撞到平台，遊戲結束\n    if(rocket.touched(platform)){\n        stop();\n    }\n\n    print(\"燃料：\" + fuel, 30, 20, \"white\", 25);\n});","created_at":"2017-03-01T20:52:04.729+08:00","updated_at":"2019-11-10T15:26:16.206+08:00","name":"火箭降落","language":"javascript","screenshot":{"url":"https://cdn0.koding.school/uploads/project/screenshot/14115/621314ae1199332098aa46a9948e0331.jpg"},"parent_id":10697,"plugin":"var fire = createSprite(\"fire.png\");\nfire.scale = 0.7;\nforever(function() {\n    if(window.rocket \u0026\u0026 window.platform) {\n        fire.x = rocket.x;\n        fire.y = rocket.y;\n        fire.direction = rocket.direction - 180;\n        fire.stepForward(65);\n        fire.direction = rocket.direction;\n        if(window.rocket \u0026\u0026 (key.up || key.left || key.right) \u0026\u0026 window.fuel\u003e0) {\n            fire.hidden = false;\n        } else {\n            fire.hidden = true;\n        }\n        if(rocket.touched(platform)) {\n            // fire.hidden = true;\n        }\n    }\n});","description":"上、左、右推進火箭\n在料用盡前成功火箭降落在平台上。","note":null,"status":"public","like_student_ids":[],"is_featured":false,"views":86,"hashid":"npms39d4","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}