Hornpipe2's Blog - Let there be Sprite!

RSS Bot · February 1, 2008

Progress continues slowly. I wrote up a little C application to take BMP files and spit out assembler BYTE codes, so I can draw sprites in MSPaint and not have to punch in hex codes by hand. The colors are off and I end up fixing them manually, but it seems to work okay for the actual pixel on/off data.

Here's the current build showing my fighters standing ready. They're 40 pixels wide, and 21 lines tall shown 3 times each, for an effective 40x63 sprite. Reflected players will probably come next, as well as dynamically building the sprite color table in RAM each frame so I can have two differently colored players. That way I can store sprite colors in a special format as there are only 4 colors used (uniform1, uniform2, skin, hair) and that means 2 ROM bits instead of 8 - I would then unpack it to 8-bit colors before starting the frame.

Maybe I'll even let players pick the uniform color in the final version - we'll see.

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