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4449 :: [help] indirectly imported types not working?

• jorgeer (orginal) [2018-12-09T13:43:21+01:00] view original

  Hello there. I am getting a really confusing error message.

  "Error: attempting to call undeclared routine: 'pos='"

  when doing this (shortened down to relevant bits, code is based on nico examples):

  main.nim

  
  import types
  
  proc newPlayer(x,y: int): Player =
    result = new(Player)
    result.pos = vec2i(x, y)
  Run

  types.nim

  
  import nico/vec
  
  type
    GameObject* = ref object of RootObj
      pos: Vec2i
    
    Player* = ref object of GameObject
      dir: int
  Run

  So, the types are being imported, bit it struggles with the "nested" type imports? If I add the types inside the main file, it works as expected. I have tried to export the Vec2i type in tyes.nim, bit it doesn't help. What am I doing wrong?

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• Stefan_Salewski (orginal) [2018-12-09T14:00:25+01:00] view original

  You have to mark pos field in GameObject with a star also to make it accessible from your main.nim module. Unless you do that, it is considered not public, but private to types.nim module.

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• lscrd (orginal) [2018-12-09T14:02:52+01:00] view original

  Marking the type as exported is not sufficient. You have to mark the field pos as exported (and also for the field dir I guess):

  
  import nico/vec
  
  type
    GameObject* = ref object of RootObj
      pos*: Vec2i
    
    Player* = ref object of GameObject
      dir*: int
  Run

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• jorgeer (orginal) [2018-12-10T09:54:09+01:00] view original

  Ahaaa, so the private nature of the object properties apply to the module they are used in? That makes more sense to me then. Thanks @Stefan_Salewski and @lscrd

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