colors.lua

local expect = require "cc.expect"

local colors = {
    white = 0,
    orange = 1,
    magenta = 2,
    lightBlue = 3,
    yellow = 4,
    lime = 5,
    pink = 6,
    gray = 7,
    lightGray = 8,
    cyan = 9,
    purple = 10,
    blue = 11,
    brown = 12,
    green = 13,
    red = 14,
    black = 15
}

-- These are not intended to work properly, as bundled wire does not use colors in Phoenix.
function colors.combine(...) return math.max(...) end
function colors.subtract(...) return math.min(...) end
function colors.test(a, b) return a == b end

function colors.packRGB(r, g, b)
    expect(1, r, "number")
    expect(2, g, "number")
    expect(3, b, "number")
    return bit32.bor(bit32.lshift(r * 255, 16), bit32.lshift(g * 255, 8), b * 255)
end

function colors.unpackRGB(rgb)
    expect(1, rgb, "number")
    return bit32.band(bit32.rshift(rgb, 16), 0xFF) / 255, bit32.band(bit32.rshift(rgb, 8), 0xFF) / 255, bit32.band(rgb, 0xFF) / 255
end

function colors.toBlit(color)
    expect(1, color, "number")
    return ("%x"):format(color)
end

return colors