火箭降落 | JavaScript 程式專案

{"id":7217,"student_id":10,"content":"var vx = 0;\nvar vy = 0;\nvar fuel = 500;\n\nrocket.x = 50;\nrocket.y = 50;\nplatform.x = 500;\nplatform.y = 400;\n\nforever(function(){\n    rocket.y = rocket.y + vy;\n    rocket.x = rocket.x + vx;\n    vy = vy + 0.06;\n\n    if (key.up) {\n        vy = vy - 0.1;\n    }\n    if (key.right) {\n        vx = vx + 0.1;\n    }\n    if (key.left) {\n        vx = vx - 0.1;\n    }\n\n    print(fuel, 10, 10, 'red', 30);\n});","created_at":"2017-03-01T20:52:04.729+08:00","updated_at":"2019-11-09T12:07:02.158+08:00","name":"火箭降落","language":"javascript","screenshot":{"url":"https://cdn8.koding.school/uploads/project/screenshot/7217/fd1ac05835b665cf0d7e3c5532c7c2d7.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;\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\nrocket.direction = 0;","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":512,"hashid":"gk4s4m3","is_content_changed":null,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}