How do I code in layers properly - and should I?

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• Holonist Member

  April 2015

  Altough I didn't find something right away, Google led me to this insightful article http://www.codeproject.com/Articles/36847/Three-Layer-Architecture-in-C-NET
  
  It seems programming in layers is ok, but it's only useful if you store all the logic in the middle layer (between data and presentation).
  
  Is this even possible in Gideros? Most of my logic/action usually happens in Eventlisteners of display objects...

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• ar2rsawseen Maintainer

  April 2015

  I usually have each class for each scene.
  
  And then each class for most of UI, like popup class, scrollview class, etc
  
  And then game logic classes, like super class Enemy and subclasses EnemyFish, EnemyChicken, etc
  
  And in my case Enemy classes would include both visual and logical things.
  
  But i guess you could also do it your way.
  
  In that case most probably you would have Enemy super class which inherits from EventDispatcher and subclasses like EnemyChicke which inherits from Enemy class.
  
  And then EnemySkin super class which inherits from Sprite, and then specific subclasses, like EnemyChickenSkin. And those skin classes can be used by Enemy classes, which will be used by GameScene, or again separating GameScene and Game classes, for one to control UI things and other the logic
  
  So you could either have:
  
  1) GameScene control Enemy which controls EnemySkin
  or
  2) GameScene which controls scene ui and Game class which controls game logic

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• Holonist Member

  April 2015 edited April 2015

  One thing that complicates it for me is that I have to update the text of a textfield manually every time its corresponding value changes (let's say player hp).
  
  Can I add an eventlistener to a textfield that always changes the text when the according value changes?
  
  I.e. can the player object signalize to the textfield that it's hp has changed? (when both are NOT in the same object)

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• ar2rsawseen Maintainer

  April 2015

  @Holonist
  
  The best way is to create a function updatePlayerHP, where you update both hp value and textField.
  
  The worst way is to update it in ENTER_FRAME, set bool as value changed etc and upde
  
  The middle way would be to create your own custom event.
  
  Like if you have Skin class responsible for UI, it could listen to HP_CHANGED event, and player logic class would dispatch it on UI class (or you can find any other common class to dispatch event onto, unfortunately you can't broad cast events that easy)

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• SinisterSoft Maintainer

  April 2015

  I don't do any of that. I have the main game running on the stage enter_frame. I then use scene manager on top of that to do things like the title screen, options, high score, and 'play game' etc - with the game running in the background.
  
  I treat the sprites as fixed objects - I dread adding or deleting them. I don't like using too many events.
  
  I use switches to make the main game do different things - like self play, reset game, set level, etc.
  
  It seems to work well for the type of games I like - it looks a little more how a classic arcade game works rather than a classic computer game.

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  Coder, video game industry veteran (since the '80s, ❤'s assembler), arrested - never convicted hacker (in the '90s), dad of five, he/him (if that even matters!).
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