How to pass a table of vertices to b2.PolygonShape:set()?

Drix

Please, how could I pass a table of vertices, as the following, to b2.PolygonShape:set()?

local vertices = {-100,20, 160,20, 160,34, -160,34}

I tried this:

local objShape = b2.PolygonShape.new() objShape:set(table.concat(vertices, ","))

...but it doesn't work because the return of table.concat is an string.

I really really need that, because I import the arrays of vertices from text files. Please, is there any chance to make the set function to accept a table instead?

Thanks in advance

Drix

I got it:

function MyConvertTableToItensSequence(tb, i) if tb[i] ~= nil then return tb[i], MyConvertTableToItensSequence(tb, i + 1) end end   ...   objShape:set(MyConvertTableToItensSequence(vertices, 1))

But I should say that passing a table to this kind of function would be more comfortable.

zvardin

You can use the unpack lua function

Drix

Thanks @zvardin! I did not know that function. Much simpler.

zaniar

afaik, unpack function is expensive. So, be careful.