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« on: May 14, 2015, 11:17:43 PM »
Too many colors on most of them.
The NES has 4 palettes for sprites, each with 3 colors and one of those three is pretty much always black. Yes, on all 4 palettes. And two of those 4 can't be changed because mega man uses them. And you have to also make any attack animations they have also fit into this limitation.
So here's what you have for palettes:
#1 = (unusable - changes with mega's weapons)
#2 = white, peach, black
#3 = A, B, black
#4 = C, D, black
On top of all of this you have limitation of 8 sprites per scanline (including any attacks flying around, of which mega can easily eat up to 4-5 when spamming uncharged shots) which severely limit the use of multiple overlapping sprites to create more colors. Generally you want to use one main palette for the RM and limit other colors to a highlighted area or two, or projectiles/shields/whatever. Not paying attention to this would produce screen flicker and slowdown.
Your mugshots ALSO have to work with these limitations, though you can make use of 4 background palettes each with 3 colors... but also remember the rest of the screen and any selection indicators will eat into this limit as well. Generally this means your RMs need to have some common colors, and the amount you're using for shading purposes is just not workable.
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