Module:Sprite

Documentation for this module may be created at Module:Sprite/doc

local p = {}

function p.getHighestStack(frame)
    local name = frame.args[1]
    if not name then return '' end
    
    for i = 20, 1, -1 do
        local file = mw.title.new('File:' .. name .. i .. '.png')
        if file and file.exists then
            return tostring(i)
        end
    end
    return ''
end

function p.render(frame)
    local name = frame.args[1]
    local sizeArg = frame.args[2] or frame.args.size or '32'
    local scale = frame.args.scale
    local class = frame.args.class or ''
    if not name then return '' end
    
    local suffix = p.getHighestStack(frame)
    local filename = name .. suffix .. '.png'
    
    -- Determine final size
    local size
    
    -- Check if sizeArg is a multiplier (starts with 'x')
    local multiplier = sizeArg:match('^x(%d+)$')
    if multiplier then
        multiplier = tonumber(multiplier)
    elseif scale then
        multiplier = math.floor(tonumber(scale) or 1)
    end
    
    -- Clamp multiplier to reasonable integer range
    if multiplier then
        multiplier = math.max(1, math.min(multiplier, 10))
        
        -- Get original file dimensions
        local file = mw.title.new('File:' .. filename)
        if file and file.file and file.file.width then
            size = file.file.width * multiplier
        else
            -- Fallback: assume 16px base size
            size = 16 * multiplier
        end
    else
        size = sizeArg
    end
    
    local classAttr = ''
    if class ~= '' then
        classAttr = '|class=' .. class
    end
    
    return string.format(
        '<span class="pixel-sprite">[[File:%s|%spx|link=|alt=%s%s]]</span>',
        filename, size, name, classAttr
    )
end

return p