Zsolt Tasnadi
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48 lines
1.1 KiB
Lua
48 lines
1.1 KiB
Lua
--- @section RLE
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RLE = {
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data = {}
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}
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--- Registers an RLE-encoded image.
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--- @param rle_data table Table containing 'id', 'values' and 'runs' arrays.
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function RLE.register(rle_data)
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table.insert(RLE.data, rle_data)
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end
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--- Gets the RLE data for a given ID.
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--- @param id string The identifier of the image.
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--- @return table|nil The RLE data or nil if not found.
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function RLE.get(id)
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for _, rle_data in ipairs(RLE.data) do
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if rle_data.id == id then
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return rle_data
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end
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end
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return nil
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end
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--- Draws an RLE-encoded image by its ID.
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--- @param id string The identifier of the image to draw.
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function RLE.draw(id)
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local rle_data = RLE.get(id)
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if not rle_data then return end
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local img_values = rle_data.values
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local img_runs = rle_data.runs
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local SCREEN_WIDTH=240
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local SCREEN_HEIGHT=136
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local val_i=0
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local run=0
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for y=0,SCREEN_HEIGHT-1 do
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for x=0,SCREEN_WIDTH-1 do
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if run==0 then
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val_i=val_i+1
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run=img_runs[val_i]
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end
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run=run-1
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pix(x,y,img_values[val_i])
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end
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end
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end
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