火箭降落 | JavaScript 程式專案

{"id":23225,"student_id":1639,"content":"setBackdrop('bg.jpg');\nvar platform = createSprite(\"platform.png\");\nvar rocket = createSprite([\"rocket.png\",\"bomb.png\"]);\nvar vx = 0;\nvar vy = 0;\nrocket.x = 50;\nrocket.y = 50;\nplatform.x = 535;\nplatform.y = 400;\nrocket.direction = 0;\nvar fuel = 500;\nforever(function() {\n    rocket.x = rocket.x + vx;\n    rocket.y = rocket.y + vy;\n    vy = vy + 0.06;\n    if(fuel \u003e 0){\n    if (key.up) {\n    vy = vy - 0.1;\n    fuel = fuel - 1;\n    }\n    if (key.left) {\n        vx = vx - 0.1;\n        fuel = fuel - 1;\n    }\n    if (key.right) {\n        vx = vx + 0.1;\n        fuel = fuel - 1;\n    }\n    \n    }\n    if(rocket.touched(platform)){\n        \n    }\n    print(fuel,30, 30, 'red', 30)\n\n    \n    \n});\n","created_at":"2018-03-03T10:07:16.952+08:00","updated_at":"2019-11-01T23:27:40.181+08:00","name":"火箭降落","language":"javascript","screenshot":{"url":"https://cdn4.koding.school/uploads/project/screenshot/23225/9393aacba3963e34803a40155f5aa7de.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":114,"hashid":"d5msy84m","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}