Java-Gaming.org    
Featured games (81)
games approved by the League of Dukes
Games in Showcase (487)
Games in Android Showcase (110)
games submitted by our members
Games in WIP (552)
games currently in development
News: Read the Java Gaming Resources, or peek at the official Java tutorials
 
    Home     Help   Search   Login   Register   
Pages: [1]
  ignore  |  Print  
  LayerManager and Sprites  (Read 957 times)
0 Members and 1 Guest are viewing this topic.
Offline danielmfreitas

Senior Newbie




Java games rock!


« Posted 2005-03-08 17:55:07 »

The LayerManager in MIDP 2.0 draws layers acording to their z-orden in the LayerManager object. Since a Sprite is a Layer, than it follows the same rules for being rendered.

But the basic theory about tile based games are that each row is drawn one by one, so sprites located lower at the screen are on top of other Sprites upper in the screen. This is usefull for giving life to the isometric view.

Is there a good way to rearrange the sprites so that sprites with greater Y location has a smaller z order? Do I have to manually remove the sprites and inserts them in the LayerManager in the correct order?

Did I make myself clear?
Offline davidaprice

Junior Member





« Reply #1 - Posted 2005-03-09 07:59:45 »

To use the LayerManager for this, yes you'd have to manually remove and add the Sprites.

But the LayerManager actually gives you rather little: I'd suggest you code your own with the behaviour you want. It sounds like you need to sort the list of Sprites each time you paint, but it's easy to choose a sort algorithm that's cheap if the list is already sorted or nearly sorted.
Offline danielmfreitas

Senior Newbie




Java games rock!


« Reply #2 - Posted 2005-03-09 14:39:02 »

That's what I imagined. Thanks. I will have to re-read my academic algorithms book. I just do not remember quick sort, bubble sort... eheh. I thought I would never need to reimplement those again... It's good they are easy to implement...
Pages: [1]
  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.

CopyableCougar4 (22 views)
2014-08-22 19:31:30

atombrot (34 views)
2014-08-19 09:29:53

Tekkerue (30 views)
2014-08-16 06:45:27

Tekkerue (25 views)
2014-08-16 06:22:17

Tekkerue (18 views)
2014-08-16 06:20:21

Tekkerue (26 views)
2014-08-16 06:12:11

Rayexar (65 views)
2014-08-11 02:49:23

BurntPizza (41 views)
2014-08-09 21:09:32

BurntPizza (31 views)
2014-08-08 02:01:56

Norakomi (41 views)
2014-08-06 19:49:38
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

Resources for WIP games
by CogWheelz
2014-08-01 16:19:50

List of Learning Resources
by SilverTiger
2014-07-31 16:29:50

List of Learning Resources
by SilverTiger
2014-07-31 16:26:06

List of Learning Resources
by SilverTiger
2014-07-31 11:54:12

HotSpot Options
by dleskov
2014-07-08 01:59:08
java-gaming.org 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‑gaming.org
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!