Need SuperTux Modding help

[Chess007]

From what I read, modding the graphics on SuperTux is as easy as replacing the original pgn files with other pgn files that have the same file name.

I just tested my skin, by replacing an original pgn file with a pgn file of wolverine.

Wolverine shows up in game. But he has a white box around him. I am sure this has something to do with my file needing a transparency mask.

The original file:
http://server3.pictiger.com/img/257716/computer-games-and-screenshots/largetux-standing-facing-right.png

My file:
http://server3.pictiger.com/img/257717/computer-games-and-screenshots/wolverine-to-mod-over-the-image-of-tux.png

Can anyone tell me how to give my file a transparency mask in The Gimp?

Thank you kindly. :)

[ArgPirate]

Don't hold me to it but in gimp 2 try going to layer->transperncy select add alpha chanel, then go back and color to alpha. that should do it.

you might want to also select semi-flaten after that, but hey, who am i to judge?

[bwkaz]

Making Colors in a GIF Transparent (http://aplawrence.com/Linux/crousegif.html)

This also works for PNGs. You will need to add an alpha channel, then select and "clear" the white pixels. Clearing them (edit->clear, not the delete key) will set them to fully transparent when there's an alpha channel.

Then export it as a PNG again, and the transparent stuff should still be transparent. To test, you can stick it on a webpage that has a colored background; the background color should come through the transparent areas of the PNG. (Assuming you don't use IE to view it. ;))

[Chess007]

Thank you kindly. It works fine now. :)

Once this is done, I may increase tuxes speed (its adjustable through the level editor) and try to put Sonic The Hedgehog sprites into the game.

Its a lot of fun and very modable.

Anyone know of a linux clone of Super Double Dragon? The game style is 1 (or 2) players fight all the enemies on the screen. They walk right, (or left - depends on the level) the screen moves and more bad guys pop up etc. Its one of my favorite games and I wondered if there was any game like that for linux. Also, you can walk up and down, not just left and right.

http://doubledragon.classicgaming.gamespy.com/rsdd.htm

[ArgPirate]

You could always try an emulator. there are great snes and nes emulators for linux. In fact they are even in my package manager. I would try zsnes for your snes needs. Once you get your emulator you need to find some roms.

Now roms are of questionable legality so i wont tell you where to get them. The are not that hard to find so i dont think the mfgs of the games care to much. I think its a tolerated sort of thing. Hopefully the mods wont consider this a post about warez.

[Fedoration]

I love supertux too. The moment I saw it, it reminded me of the super mario games that I gained so much pleasure from as a child. I love the way that the game offers a fulfillable challenge, making it satisfying. Is there a fan site where you can download the mods that people make?