Hi !
Featured games (84)
games approved by the League of Dukes
Games in Showcase (549)
Games in Android Showcase (137)
games submitted by our members
Games in WIP (594)
games currently in development
News: Read the Java Gaming Resources, or peek at the official Java tutorials
    Home     Help   Search   Login   Register   
Pages: 1 [2]
  ignore  |  Print  
  Coding Standards  (Read 3215 times)
0 Members and 1 Guest are viewing this topic.
Offline erikd

JGO Ninja

Medals: 16
Projects: 4
Exp: 14 years


« Reply #30 - Posted 2013-01-25 01:59:57 »

The field is an implementation details, the getter is the API.
If you let the caller to use directly the field you can't rely on an implementation changes without to refactor all usages.

I take by example, if you want to change your implementation for a precise field that you want to set it lazy. You want only to read and instanciate it only when it is accessed.
If you done a getter at the start point, you can reimplement the getter in order to get your lazy function without any impact of the usage.

If needed, the direct access can be refactored to a getter in a proper interface with about 3 mouse clicks.
Until then, I just access directly.
(In my own personal little game projects, mind you. When working in teams on larger projects I don't work that way and stick to the generally accepted coding standards for obvious reasons.)

Sometimes I'd wish java would just let me define a field in an interface without needing to implement getters and setters that basically do nothing.

Offline actual

JGO Coder

Medals: 24

« Reply #31 - Posted 2013-01-25 02:45:06 »

Sometimes I'd wish java would just let me define a field in an interface without needing to implement getters and setters that basically do nothing.

Scala lets you do this.
class Soldier {

   var facingAngle:Float;

thisSolder.facingAngle = 300f;

// Now let's say you want to clamp the value of facing angle between 0 and 360.
class Soldier {

  private var  _facingAngle:Float;

    // EDIT - The  Getter that sproingie pointed out I was missing.
   // (in scala, you do not need an explicit return statement. the function returns the last value.)
   def facingAngle:Float = _facingAngle

  def facingAngle_=(angle:Float) {
      if (angle < 0) _facingAngle = 0
      else if (angle > 360) _facingAngle = 360
      else _facingAngle = angle

// Using it

myNewSoldier.facingAngle = 400  // you can refer to it just like a plain old field
println(myNewSoldier.facingAngle)    // prints 360
Offline sproingie

JGO Kernel

Medals: 202

« Reply #32 - Posted 2013-01-25 04:58:22 »

You didn't define a getter that accesses _facingAngle, so wouldn't newSoldier.facingAngle actually return the default value of 0?

Having a language follow the Uniform Access Principle is still pretty keen though Smiley
Games published by our own members! Check 'em out!
Legends of Yore - The Casual Retro Roguelike
Offline actual

JGO Coder

Medals: 24

« Reply #33 - Posted 2013-01-25 05:05:08 »

Thank you and getter is added.
Pages: 1 [2]
  ignore  |  Print  
You cannot reply to this message, because it is very, very old.


Add your game by posting it in the WIP section,
or publish it in Showcase.

The first screenshot will be displayed as a thumbnail.

GamerIDGoesHere (17 views)
2015-01-27 01:23:23

GamerIDGoesHere (17 views)
2015-01-27 01:22:15

CopyableCougar4 (23 views)
2015-01-27 00:34:41

CopyableCougar4 (15 views)
2015-01-26 04:47:56

Olo (14 views)
2015-01-25 21:26:00

Olo (16 views)
2015-01-25 18:44:22

Robo11 (29 views)
2015-01-25 06:14:26

basil_ (26 views)
2015-01-17 22:29:32

wxwsk8er (26 views)
2015-01-16 21:42:21

wxwsk8er (21 views)
2015-01-16 20:44:20
2D Dynamic Lighting
by ThePixelPony
2015-01-01 20:25:42

How do I start Java Game Development?
by gouessej
2014-12-27 19:41:21

Resources for WIP games
by kpars
2014-12-18 10:26:14

Understanding relations between setOrigin, setScale and setPosition in libGdx
by mbabuskov
2014-10-09 22:35:00

Definite guide to supporting multiple device resolutions on Android (2014)
by mbabuskov
2014-10-02 22:36:02

List of Learning Resources
by Longor1996
2014-08-16 10:40:00

List of Learning Resources
by SilverTiger
2014-08-05 19:33:27

Resources for WIP games
by CogWheelz
2014-08-01 16:20:17 is not responsible for the content posted by its members, including references to external websites, and other references that may or may not have a relation with our primarily gaming and game production oriented community. inquiries and complaints can be sent via email to the info‑account of the company managing the website of java‑
Powered by MySQL Powered by PHP Powered by SMF 1.1.18 | SMF © 2013, Simple Machines | Managed by Enhanced Four Valid XHTML 1.0! Valid CSS!