Yet Another Tilemap and Super Scaler Demo for the Sega 32X
- draws tilemap of arbitrary size, exported from Tiled
- scrolls in any direction, avoiding redraw as much as possible using the dirty rectangles approach
- uses the shift-register for smooth scrolling
- can handle an arbitrary number of sprites, all fully clipped
- adjustable clipping region for sprites: see the draw_setScissor call
- uses both CPUs to draw tiles and sprites
- sprites can be flipped on X and Y axis and/or scaled
- "imprecise" rendering: sprites can be scaled using a cheaper and faster algorithm, the X coordinate is also snapped to the nearest even value
- the code also supports flipping of tiles, although the tilemap format would need to be extended for that
- same for multiple tile layers: it can handle an arbitrary number of layers, albeit without parallax, which would should be easy to add
- the sprites and tiles can be of any size in either dimension, although if you to plan to use scaling, the size should be a power of 2
- sprites can be scaled to an arbitrary size
- works on real hardware
Run python3 palbmp.py >res.h to re-generate the tiles and global palette.
Run python3 partmx.py >tiles.h to re-generate the tilemap.
If a source file does not have a license header stating otherwise, then it is covered by the MIT license.
The demo uses graphical assets from Little Game Engine: https://github.com/mills32/Little-Game-Engine-for-VGA
Original code by Victor Luchitz aka Vic
32X devkit by Joseph Fenton aka Chilly Willy