{
 "_doc": "챕터 맵 거점 좌표(맵 기준 px = UI 기준 px · 원점 왼쪽 위 · 맵 2160×3840 · 화면 창 1080×1920) · road = 맵에 그려진 큰길 중심선 · safe_len = 맵 가장자리 여백(node_margin) 안 호 길이 구간 · slots_N = 그 구간 N 등분(첫 칸 = 출발 · 마지막 = 보스 추천) · 기획 세션이 N(10~20)을 정하면 slots_N 그대로 또는 road 를 다시 샘플 · landmarks = 맵에 그린 장소(이름판 자리 참고)",
 "id": "ch04",
 "no": 4,
 "ko": "관우 천리행",
 "map_size": [
  2160,
  3840
 ],
 "view_size": [
  1080,
  1920
 ],
 "node_margin": {
  "top": 300,
  "bottom": 300,
  "left": 140,
  "right": 140,
  "_doc": "맵 끝까지 끌었을 때 화면 위·아래 HUD(위 230 · 아래 220)에 노드가 가리지 않게 맵 가장자리에서 띄움"
 },
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   1688.3,
   3439.0
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   1668.5,
   3436.2
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   3435.1
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   1628.6,
   3434.5
  ],
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   1610.5,
   3426.0
  ],
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   1604.9,
   3406.8
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   3386.8
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  ],
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   1569.4,
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   1493.1,
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   3301.3
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   3296.4
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   3292.0
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   3290.7
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   1354.3,
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  ],
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   1254.3,
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  [
   1234.3,
   3291.0
  ],
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   1214.3,
   3291.0
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   1194.3,
   3291.0
  ],
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   1174.3,
   3291.0
  ],
  [
   1154.3,
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   1134.7,
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   3253.8
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   1037.4,
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   3225.3
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   3201.2
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   3181.0
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   2752.1
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   2430.0
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   2424.9
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   776.6,
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   796.3,
   2417.3
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   815.8,
   2413.0
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   2409.3
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   894.8,
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   914.6,
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   2394.4
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   993.2,
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   1012.7,
   2378.6
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   1032.4,
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   2366.2
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   1227.7,
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   1266.7,
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   1400.6,
   2283.2
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   1437.9,
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   2139.0
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   1660.5,
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   1671.4,
   1973.7
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   1671.0,
   1953.7
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   855.8,
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   807.8,
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   990.0
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   979.4
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   966.2
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   952.0
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   934.7
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   915.3
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   895.5
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   877.3
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   866.4
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   862.6
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   854.6
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   840.0
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   823.1
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   808.4
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   800.0
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   797.1
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   788.2
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   772.6
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   1385.5,
   755.1
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   703.5
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   1340.4,
   689.8
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   1321.4,
   683.7
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   1302.2,
   678.0
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   1284.2,
   669.2
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   1267.4,
   658.5
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   1251.3,
   646.6
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   1235.5,
   634.3
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   1220.2,
   621.4
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   610.1
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   590.6
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   1106.5,
   587.3
  ],
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   1086.5,
   585.9
  ],
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   1066.6,
   585.1
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   585.5
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   550.8
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