火箭降落 | JavaScript 程式專案

{"id":7314,"student_id":1440,"content":"var vx=0;\nvar vy=0;\nvar fuel=500;\nrocket.x=50;\nrocket.y=50;\n\nplatform.x=550;\nplatform.y=440;\n\nforever(function(){\n vy=vy+0.05\n\n rocket.y=rocket.y+vy\n rocket.x=rocket.x+vx\n\n print(fuel,30,30,'red',30)\n\n     if(rocket.touched(platform)){\n         if(vy \u003e 0.5 \u0026\u0026 vx \u003e0.1 \u0026\u0026 vx \u003c 0.1){\n             rocket.costumes=1\n         }\n         stop();\n     }\n\n if(fuel\u003e0){\n\n     if(key.up){\n         vy=vy-0.1\n         fuel=fuel-1\n     }\n     if(key.right){\n         vx=vx+0.1\n         fuel=fuel-1\n     }\n     if(key.left){\n         vx=vx-0.1\n         fuel=fuel-1\n     }\n }\n});","created_at":"2017-03-01T20:52:04.729+08:00","updated_at":"2019-02-24T20:14:10.734+08:00","name":"火箭降落","language":"javascript","screenshot":{"url":"https://cdn8.koding.school/uploads/project/screenshot/7314/bb1fcf15286410f5f837a83ed608717e.jpg"},"parent_id":7216,"plugin":"setBackdrop('bg.jpg');\n\nvar platform = createSprite(\"platform.png\");\nvar rocket = createSprite([\"rocket.png\",\"bomb.png\"]);\nvar fire = createSprite(\"fire.png\");\nfire.scale = 0.7;\nrocket.direction = 0;\n\nforever(function() {\n\tfire.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((key.up || key.left || key.right) \u0026\u0026 fuel\u003e0) {\n    \tfire.hidden = false;\n    } else {\n        fire.hidden = true;\n    }\n    if(rocket.touched(platform)) {\n        fire.hidden = true;\n    }\n});\n\n\n","description":null,"note":null,"status":"public","like_student_ids":[],"is_featured":false,"views":152,"hashid":"jzms836","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}