火箭降落 | JavaScript 程式專案

{"id":26637,"student_id":2015,"content":"setBackdrop('bg.jpg');\nvar platform = createSprite(\"platform.png\");\nvar rocket = createSprite([\"rocket.png\",\"bomb.png\"]);\nrocket.direction = 0;\nrocket.x = 0;\nrocket.y = 0;\nvar vx = 0;\nvar vy = 0;\n\nvar fuel = 500;\n\nplatform.x = 518;\nplatform.y = 402;\n\n\nforever(function(){\n\nvy = vy+0.1;\nrocket.y = rocket.y+vy;\nrocket.x = rocket.x+vx;\n\n\n\nif (key.up){\nvy = vy-0.25\nfuel = fuel-1\n};\n\nif (key.left){\nvx = vx-0.05   \nfuel = fuel-1\n};\n\n\nif (key.right){\nvx = vx+0.05\nfuel = fuel-1\n};\nprint(fuel , 30 ,30 , 'blue' , 30\n ) ;\n\n\n});\n\n","created_at":"2018-04-19T20:48:39.211+08:00","updated_at":"2019-08-29T18:26:08.175+08:00","name":"火箭降落","language":"javascript","screenshot":{"url":"https://cdn3.koding.school/uploads/project/screenshot/26637/51f51d644d2b31bd498fbf093e92bf88.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":67,"hashid":"qmds362r","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}