A little tip for positioning

Hey guys, I have seen this a lot so i thought I would mention it.

How many of you are doing this?

  
local \_W = display.contentWidth   

then using it like:

something.x = \_W \* 0.5/  

There is an api which will position objects at the center of the screen for you without all these extra bits.

display.contentCenterX -- same as display.contentWidth \* 0.5  
display.contentCenterY - same as display.contentHeight \* 0.5  

I don’t know how many of you know of this handy api or how many of you use it. But I thought it was a valuable thing to remind people about.
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