火箭降落 | JavaScript 程式專案

{"id":11661,"student_id":98,"content":"setBackdrop('bg.jpg');\nvar platform = createSprite(\"platform.png\");\nvar rocket = createSprite([\"rocket.png\", \"bomb.png\"]);\nvar vx = 0;\nvar vy = 0;\nvar fuel = 500;\nplatform.x = 500;\nplatform.y = 450;\nrocket.x = 50;\nrocket.y = 50;\nrocket.direction = 0;\nforever(function() {\n    \n    if(rocket.touched(platform)){\n        stop();\n    }\n    \n    vy += 0.06;\n    rocket.x += vx;\n    rocket.y += vy;\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    print(fuel, 30, 30, 'red', 30);\n})","created_at":"2017-03-01T20:52:04.729+08:00","updated_at":"2019-10-06T03:53:25.376+08:00","name":"火箭降落","language":"javascript","screenshot":{"url":"https://cdn4.koding.school/uploads/project/screenshot/11661/a9a56f4bb380747fc33ae8c0debc7d1d.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":123,"hashid":"gk4sk5qj","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}