Java-Gaming.org Hi !
Featured games (90)
games approved by the League of Dukes
Games in Showcase (775)
Games in Android Showcase (230)
games submitted by our members
Games in WIP (856)
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  
  Changing certain colors of an image into other colors  (Read 2568 times)
0 Members and 1 Guest are viewing this topic.
Offline Screem
« Posted 2012-03-10 13:53:27 »

Hello, quite new here, just made an account yesterday. I've been learning game development for a while and made a few games, but I've come to a problem. For this next game I want to make, it's going to have a character creation menu in which you can adjust the colors of the character sprite, sort of like how Terraria allows you to change colors of the character. I'm puzzled by the best way to go about doing this. Each sprite is going to have six different shades of gray, and for each shade I want it to be replaced by a certain color chosen by the user in the character selection screen. How would I go about doing this?

I thought of getting the RGB array of the sprite and reading it in a for loop then depending on the shade of gray the color would be changed to what the user picked, but it seems there would be a faster way of doing that, especially since this would need to be done for each iteration of the game loop.

Any help would be great, thanks in advance!

- Screem
Offline pjt33

« JGO Spiffy Duke »


Medals: 40
Projects: 4
Exp: 7 years



« Reply #1 - Posted 2012-03-10 15:38:22 »

You could do precisely what you suggest as a pre-processing step. Or you could use palette-based images and just change the palette. That involves getting quite deeply into the java.awt.image API, and in particular understanding IndexColorModel.
Offline Screem
« Reply #2 - Posted 2012-03-10 15:50:56 »

Hm, alright. Thanks for the advice!
Games published by our own members! Check 'em out!
Legends of Yore - The Casual Retro Roguelike
Offline sproingie

JGO Kernel


Medals: 202



« Reply #3 - Posted 2012-03-10 17:19:08 »

Indexed color images are going to drive you bonkers, and they're slower on modern hardware.  I would just process the template image and create a new one each time.
Offline Screem
« Reply #4 - Posted 2012-03-10 18:33:10 »

So once they create the character, store the player sprite with the colors they chose in some player data folder or something and use the custom colored image from then on for that character? Seems like a great idea, thanks! Smiley
Pages: [1]
  ignore  |  Print  
 
 

 
hadezbladez (24 views)
2018-11-16 13:46:03

hadezbladez (30 views)
2018-11-16 13:41:33

hadezbladez (15 views)
2018-11-16 13:35:35

hadezbladez (10 views)
2018-11-16 13:32:03

EgonOlsen (1888 views)
2018-06-10 19:43:48

EgonOlsen (1909 views)
2018-06-10 19:43:44

EgonOlsen (1265 views)
2018-06-10 19:43:20

DesertCoockie (1709 views)
2018-05-13 18:23:11

nelsongames (1395 views)
2018-04-24 18:15:36

nelsongames (2010 views)
2018-04-24 18:14:32
Deployment and Packaging
by mudlee
2018-08-22 18:09:50

Java Gaming Resources
by gouessej
2018-08-22 08:19:41

Deployment and Packaging
by gouessej
2018-08-22 08:04:08

Deployment and Packaging
by gouessej
2018-08-22 08:03:45

Deployment and Packaging
by philfrei
2018-08-20 02:33:38

Deployment and Packaging
by philfrei
2018-08-20 02:29:55

Deployment and Packaging
by philfrei
2018-08-19 23:56:20

Deployment and Packaging
by philfrei
2018-08-19 23:54:46
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!