火箭降落 | JavaScript 程式專案

{"id":22749,"student_id":46,"content":"setBackdrop('bg.jpg');\nvar platform = createSprite(\"platform.png\");\nvar rocket = createSprite([\"rocket.png\",\"bomb.png\"]);\nrocket.x=50;\nrocket.y=50; \nplatform.x=550;\nplatform.y=450;\nvar  vx=0\nvar  vy=0\nvar  fuel=500\n\n\n\n\nforever(function() {\n    rocket.y=rocket.y+vy; \n    vy=vy+0.06\n    rocket.x=rocket.x+vx;\n    print(fuel,30,30,\"red\",30);  \n    if(fuel){if(key.up){ vy=vy-0.1;fuel=fuel-1;}\n    if(key.right){ vx=vx+0.1;fuel=fuel-1;}\n    if(key.left){ vx=vx-0.1;fuel=fuel-1;}}\n    if(rocket.touched(platform)){stop();\n\n    }\n});\n","created_at":"2018-02-24T13:32:25.178+08:00","updated_at":"2019-10-30T07:12:53.671+08:00","name":"火箭降落","language":"javascript","screenshot":{"url":"https://cdn7.koding.school/uploads/project/screenshot/22749/9edcc11b6e810339fe98dcda25c31e9f.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":116,"hashid":"2pdsrwe3","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}