火箭降落副本 | JavaScript 程式專案

{"id":166238,"student_id":3770,"content":"setBackdrop('bg.jpg');\nvar platform = createSprite(\"platform.png\");\nvar rocket = createSprite([\"rocket.png\", \"bomb.png\"]);\nvar fuel = 500;\nvar vy = 0;\nvar vx = 0;\n\nplatform.x = 500;\nplatform.y = 450;\nrocket.x = 50;\nrocket.y = 50;\nrocket.direction = 0;\n\nforever(function() {\n    rocket. y += vy;\n    rocket. x += vx;\n    rocket.direction = vx*10;\n    \n    if (rocket.touched(platform)) {\n        if (vy \u003e 0.8) {\n            rocket.costumeId = 1;\n        }\n        if (rocket.direction \u003e 6 || rocket.direction \u003c -6) {\n            rocket.costumeId = 1;\n        }\n        stop();\n    }\n    \n    if (rocket.y \u003c 0 || rocket.y \u003e 480 || rocket.x \u003c 0 || rocket.x \u003e 640) {\n            rocket.costumeId = 1;\n            stop();\n        }\n        \n    if(fuel\u003e0){\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    };\n    vy += 0.02;\n    print(\"fuel:\"+ fuel, 10, 10, \"red\", 20);\n    \n    \n    \n\n\n});","created_at":"2020-07-18T10:22:59.536+08:00","updated_at":"2020-07-18T11:55:14.864+08:00","name":"火箭降落 副本","language":"javascript","screenshot":{"url":"https://cdn3.koding.school/uploads/project/screenshot/166238/2bf81f6a161ba4b12e19e27d1e5be400.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":87,"hashid":"zpesn9mr","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}