Printing positions

Comments

• atilim Maintainer

  October 2012 edited October 2012

  It's a Lua thing. For example, if you execute this code

  local function foo1() return "a", "b", "c" end   local function foo2() return 1, 2, 3 end   local function foo3() return "x", "y", "z" end   print(foo1(), foo2(), foo3())

  you'll get first return value of foo1 and first return value of foo2 and all return values of foo3:

  a 1 x y z

  It's described here a little bit more: http://www.lua.org/pil/5.1.html
  When we use a call as an expression, Lua keeps only the first result. We get all results only when the call is the last (or the only) expression in a list of expressions
  
  
  

  Likes: OZApps

  http://en.wikipedia.org/wiki/Cytorus

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• Dikkesnoek Member

  October 2012

  Thanks Atilim.
  
  I found another issue why I've got wierd errors and values. For bodies you'll
  need to use getPosition() instead of getX() and getY(). Why is that? You can
  use getPosition() for sprites and bodies.
  
  Regards,
  
  Marc

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• ar2rsawseen Maintainer

  October 2012

  @Dikkesnoek because there was a method getPosition in box2d library, and there are nothing like getX or getY, theoretically they could have been created, but since its oreianted for box2d users there was no need for that.
  
  But if you've been following Extending Gideros forum thread, then there we've been trying to create abstraction layer for box2d merging concept of sprite and body, where by controlling Sprite you also control body.

  http://appcodingeasy.com/Gideros-Mobile

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