火箭降落 | JavaScript 程式專案

{"id":20956,"student_id":34,"content":"setBackdrop('bg.jpg');\n\nvar platform = createSprite(\"platform.png\");\nvar rocket = createSprite([\"rocket.png\",\"bomb.png\"]);\nvar vy=0;\nvar vx=0;\nvar fuel=1000;\n\nrocket.x=81;\nrocket.y=104;\nrocket.direction=0;\nplatform.x=529;\nplatform.y=436;\n\nforever(function() {\n    vy+=0.06;\n    rocket.y+=vy;\n    rocket.x+=vx;\n\n    if(key.up\u0026\u0026fuel\u003e0){\n        vy-=0.1;\n        fuel-=1;\n    };\n    if(key.left\u0026\u0026fuel\u003e0){\n        vx-=0.1;\n        fuel-=1;\n        rocket.direction+=2.5;\n    };\n    if(key.right\u0026\u0026fuel\u003e0){\n        vx+=0.1;\n        fuel-=1;\n        rocket.direction-=2.5;\n    };\n    print(\"油量:\"+fuel,30,30,\"red\",50);\n    if(rocket.touched(platform) ){\n        if(vy\u003c1 || vx\u003c1){\n            rocket.costumeId=1;\n            stop();\n        }\n    };\n});","created_at":"2018-01-26T18:35:56.774+08:00","updated_at":"2019-10-21T10:58:08.941+08:00","name":"火箭降落","language":"javascript","screenshot":{"url":"https://cdn1.koding.school/uploads/project/screenshot/20956/3b67f275969e87980c7177fd36ca0adb.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":151,"hashid":"4y3sz964","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}