Tutorial:Graphics

From SMWiki

First of all, you need a tile editor. Tile editors are used for editing game graphics. Regular image editors like Paint, Photoshop, etc. will NOT work.

I recommend YY-CHR (it's the one I'll talk about in this FAQ).You can download it here(It's at the bottom).

Unlike many games, a SMW ROM can't be edited by opening the ROM in the tile editor. The graphics in Super Mario World are compressed to save space. This means that you have to decompress the graphics, edit them and then recompress them again.

Don't worry. Lunar Magic can do this for you.

Before doing this, it's recommended that you save at least one level in Lunar Magic.

Click on the Options menu and make sure that "Use Joined GFX Files" is checked. This makes editing the graphics a bit easier.

Now, click on the red mushroom button in the toolbar to export the graphics. In case you're color blind, it's the first one of the ones shown below.

This will create a new subfolder called "Graphics". In case you can't find it, it's in the same folder as the ROM you're editing.

In this folder, you should find a file called AllGFX.bin. If it isn't there, check again that "Use Joined GFX Files" in Lunar Magic is checked and try to export again.

Open AllGFX.bin in the tile editor. You should see "Nintendo Presents", powerups, goombas, koopas and some other stuff. Scroll down to see even more graphics. All the graphics in the game can be found inside this file.

If all you see is garbage, you have to make it use 4BPP SNES format. In YY-CHR, this is done by choosing "4BPP SNES" from the drop down menu near the bottom.

Now, you can edit the graphics. Click on the tiles you want to edit. It should appear to the right. This is where you edit it. When you're done, save.

When you've saved, click on the green mushroom button (the second one) in Lunar Magic's toolbar. This will recompress the graphics and save them to the ROM.

Test the game and check if it worked.

And someone add the link to the tool.