Export the palette of the active sprite to STDOUT as a C array

export-palette.lua

-- Usage: aseprite.exe -b my-sprite.aseprite -script export-palette.lua
--
-- Or from the UI you will see the output in a console that you can copy with Ctrl+C
--

local spr = app.activeSprite
if not spr then return print("No active sprite") end

local pal = spr.palettes[1]
print("const char palette[] = {")
for i = 0,#pal-1 do
  local c = pal:getColor(i)
  print(string.format("  %d, %d, %d, %d,", c.red, c.green, c.blue, c.alpha))
end
print("}")