starwindz wrote:I would to like add or modify some tile set in order to fix this incompatibility.
Is there any kind of tile graphic editor or techniques for editing tile graphics?
Well, the format of the level graphics is known.
There are two important things that should be distinguished: level tiles
and graphics tiles
The level tiles
are those that you can see in the dropdown lists of the level editor.
The graphics tiles
are 8*8 pixel images that are used to build level tiles. (Or any other graphics.)
Each layer has a limited set of graphics tiles. (256 or 512)
Here's an image that shows what I mean:
There are many other combinations that are not present in the level tiles, for example:
Door with pillar below: the existing graphics tiles are enough.
Torch with door below: the 05 over 07 shown above is needed.
Pillar with door below: the 05 over 07 shown above is needed.
Wall with door below: needs a new graphics tile: 6D over 07.
The created new graphics tiles could be placed into the place of the empty tiles: 3A, 42, 47 or 48. (00 should be left empty.)
The graphics is compressed in the ROM, so the best solution would be making a game-specific graphics editor.