pokered/pokecrystal have gfx.c's --trim-whitespace option, so they're fine with tileset images that have trailing empty tiles at the end. However pokeemerald does not have this feature.
Under the Input and Output filenames should be a checkbox to pick a tileset size that avoids any trailing tiles, 1 tile wide if necessary.
pokered/pokecrystal have gfx.c's
--trim-whitespaceoption, so they're fine with tileset images that have trailing empty tiles at the end. However pokeemerald does not have this feature.Under the Input and Output filenames should be a checkbox to pick a tileset size that avoids any trailing tiles, 1 tile wide if necessary.