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fix #1367: Add colors.fromBlit

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This commit is contained in:
Erlend 2023-05-17 14:02:21 +02:00
parent f099b21f6f
commit 722b870f98
1 changed files with 17 additions and 0 deletions
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17
projects/core/src/main/resources/data/computercraft/lua/rom/apis/colors.lua
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@ -363,3 +363,20 @@ function toBlit(color)
return color_hex_lookup[color] or return color_hex_lookup[color] or
string.format("%x", math.floor(math.log(color) / math.log(2))) string.format("%x", math.floor(math.log(color) / math.log(2)))
end end
--- Converts the given paint/blit hex character (0-9a-f) to a color.
--
-- This is equivalent to converting the hex character to decimal and then 2 ^ decimal
--
-- @tparam string hex The paint/blit hex character to convert
-- @treturn number The color
function fromBlit(hex)
expect(1, hex, "string")
if hex:find("[^0-9a-f]") or hex == "" then
return
end
return math.floor(2 ^ tonumber(hex, 16))
end