Metatables

hoan

Hey everyone

I'm trying to write a corona compatibility layer for certain functions like: display.*, system.* etc

So I can add methods to a Sprite object so:

object:setFillColor is translated into object:setColorTransform

However, I've never used metatables before, and want these to be translated:

object.x => object:getX()
object.y => object:getY()

I call this on an object to add extra methods

function __addDisplayMethods(object) local mt = getmetatable(object) local oldIndex = mt.__index   object.setFillColor = function(self,r,g,b,a) object:setColorTransform(r/255,g/255,b/255,a/255) end   object.insert = function(self,thing) object:addChild(thing) end   object.__index = function(self,key) print("I") end   mt.__index = function(t, key) print("Ky = " .. key) if key == 'x' then return object:getX() else oldIndex(t, key) end end end

However old gideros methods don't work any longer. object:setPosition() fails. Is there a way to chain these metatables or not?

Thanks
Hoan

evs

As an aside - If you want to format your code without the nasty yellow
make sure that inside your opening <> you have pre lang="lua" exactly like that.
Then in the closing <> you have /pre - no spaces around any of it!

if not yellow then print("Hallelujah!") end

cheers

evs

hoan

Hey I figured it out. Anyone else working on corona compatibility layer? Lets pool efforts

gorkem

@ozapps has been working on it