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  • Committer: Josh C
  • Date: 2013-12-14 17:35:23 UTC
  • Revision ID: josh@9ix.org-20131214173523-8g4gd5hlk4fix1r6
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util.lua
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util = {
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   dim = function(dir)
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      if dir == 'x' then
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         return 'width'
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      elseif dir == 'y' then
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         return 'height'
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      else
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         if STRICT then error('dir '..dir) end
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      end
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   end,
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   dirToXY = function(dir)
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                if dir == 'up' or dir == 'down' then
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                   return 'y'
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                elseif dir == 'left' or dir == 'right' then
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                   return 'x'
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                else
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                   error('bad direction')
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                end
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             end,
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   dirToPosNeg = function(dir)
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                    if dir == 'up' or dir == 'left' then
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                       return -1
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                    elseif dir == 'down' or dir == 'right' then
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                       return 1
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                    else
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                       error('bad direction')
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                    end
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                 end
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}