火箭降落 | JavaScript 程式專案

{"id":14059,"student_id":1976,"content":"setBackdrop('bg.jpg');\nvar platform = createSprite(\"platform.png\");\nvar rocket = createSprite([\"rocket.png\",\"bomb.png\"]);\nvar fuel = 500;\n\nrocket.x = 50;\nrocket.y = 50;\nplatform.x = 500;\nplatform.y = 450;\n\nvar vy = 0;\nvar vx = 0;\n\n\nforever(function() {\n    vy += 0.06;\n    rocket.y = rocket.y +vy;\n    rocket.x = rocket.x +vx;\n    if(fuel\u003e0){\n        if(key.up){\n            vy = vy - 0.1;\n            fuel -= 1;\n        }\n\n        if(key.right){\n            vx += 0.1;\n            fuel -= 1;\n        }\n\n        if(key.left){\n            vx -= 0.1;\n            fuel -= 1;\n        }\n    }\n\n    if(rocket.touched(platform)){\n        \n        if(vy \u003e 5){\n            rocket.costumeId = 1;\n        }\n\n        if(vx \u003e 5){\n            rocket.costumeId = 1;\n        }\n        \n        stop();\n    }\n\n    if(rocket.y\u003c0||rocket.y\u003e480||rocket.x\u003c0|| rocket.x\u003e64){\n        rocket.costumeId = 1;\n        stop();\n    }\n    \n    rocket.direction = 50 * vx;\n    print(fuel,30,30,'red',30);\n});","created_at":"2017-03-01T20:52:04.729+08:00","updated_at":"2019-11-10T14:27:18.275+08:00","name":"火箭降落","language":"javascript","screenshot":{"url":"https://cdn2.koding.school/uploads/project/screenshot/14059/3dbe74dcd686f6ce3b0f367a727e6b09.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":384,"hashid":"kdms6dkd","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}