ffs

function loadImage ( filename )
  if ( not images[filename] ) then
    local path = ""
    if ( filename:sub ( 1, 4 ) ~= "img/" and filename:sub ( filename, 1, 1 ) ~= ":" ) then
      path = "img/"
    end
    local ext = string.lower ( filename:sub ( #filename - 2 ) )
    if ( ext == "yuv" ) then
      local file = fileOpen ( path .. filename, true )
      fileSetPos ( file, 4 )
      local contents = string.char ( 137 ) .. "PNG" .. fileRead ( file, fileGetSize ( file ) )
      fileClose ( file )
      images[filename] = dxCreateTexture ( contents )
    elseif ( ext == "tif" ) then
      local file = fileOpen ( path .. filename, true )
      local contents = string.char ( 255, 216, 255, 224 ) .. fileRead ( file, fileGetSize ( file ) )
      fileClose ( file )
      images[filename] = dxCreateTexture ( contents )
    else
      images[filename] = filename
    end
  end
  return images[filename]
end