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Implemented indexer and length operators for imagetable #97

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Implemented indexer and length operators for imagetable #97

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17 changes: 13 additions & 4 deletions playdate/imagetable.lua
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Original file line number Diff line number Diff line change
Expand Up @@ -4,11 +4,20 @@ local module = {}
playdate.graphics.imagetable = module

local meta = {}
meta.__index = meta
module.__index = meta

-- TODO: overload the `[]` array index operator to return an image
-- TODO: overload the `#` length operator to return the number of images
meta.__index = function(table, key)
if type(key) == "number" then
return table:getImage(key)
else
return rawget(meta, key)
end
end

meta.__len = function(table)
return table.length
end

module.__index = meta

-- TODO: handle overloaded signature (count, cellsWide, cellSize)
function module.new(path, cellsWide, cellsSize)
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